CN102902170B - Use Electrophtography photosensor and the image processing system of diphenylacetylene triphenylamine derivative - Google Patents
Use Electrophtography photosensor and the image processing system of diphenylacetylene triphenylamine derivative Download PDFInfo
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- CN102902170B CN102902170B CN201210258141.4A CN201210258141A CN102902170B CN 102902170 B CN102902170 B CN 102902170B CN 201210258141 A CN201210258141 A CN 201210258141A CN 102902170 B CN102902170 B CN 102902170B
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- image
- electrophtography photosensor
- image carrier
- agent
- photoreceptor
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Abstract
The present invention provides the Electrophtography photosensor using diphenylacetylene triphenylamine derivative and the image processing system possessing the electro-mechanical part contacting band DC voltage application type electrically.The Electrophtography photosensor of the present invention is the positively charged single-layer type of the diphenylacetylene triphenylamine derivative using formula (1) to represent.The above-mentioned diphenylacetylene triphenylamine derivative of the application of the invention, it is provided that the Electrophtography photosensor of transfer storage will not be produced.Additionally, the image processing system of the present invention is owing to possessing this Electrophtography photosensor as image carrier, therefore can persistently provide good image.
Description
Technical field
The present invention relates to positively charged mono-layer electronic photographic photoreceptor containing diphenylacetylene triphenylamine derivative and
Possesses the above-mentioned Electrophtography photosensor image processing system as image carrier.
Background technology
The Electrophtography photosensor that the image processing system of electrofax mode is possessed has inorganic photoreceptor and organic sense
Body of light, inorganic photoreceptor possesses the photosensitive layer being made up of the inorganic material such as selenium, amorphous silicon, and Organophotoreceptor possesses main by gluing
The photosensitive layer that the organic materials such as knot agent resin, charge generating, electric charge agent delivery are constituted.And, among these photoreceptors, by
Easily manufacture in Organophotoreceptor compared with inorganic photoreceptor, the material of photosensitive layer can be selected from the material of relative broad range, set
The degree of freedom of meter is high and is used widely.
First, as Organophotoreceptor, it is known that possess and comprise charge generating and the sense of electric charge agent delivery in same layer
The single-layer type Organophotoreceptor of photosphere.Known with at conductive base overlaminate charge generating layer (containing charge generating) and electricity
The laminated-type Organophotoreceptor of lotus transfer layer (containing electric charge agent delivery) is compared, the Rotating fields letter of above-mentioned single-layer type Organophotoreceptor
Singly and easily manufacture, the generation of paint film defect can be suppressed simultaneously.
In the image processing system using this Electrophtography photosensor, implement to comprise following 1)～5) image of operation
Formation process.
1) operation that the surface of Electrophtography photosensor is charged is made
2) make charged Electrophtography photosensor surface expose, thus form the operation of electrostatic latent image
3) when applying developing bias, electrostatic latent image is carried out the operation of toner development
4) by discharged-area development mode, the toner image of formation is transferred to the operation of transfer printing body
5) toner image being transferred on transfer printing body is heated fixing operation
This image formation process finds, uses owing to making Electrophtography photosensor rotate, therefore follow previous
Current potential (bright current potential) residual of the part being exposed in ring, even across the charged operation of subsequent cycle, in above-mentioned part the most not
The phenomenon (transfer storage (writing メ モ リ)) of desired hot-line electrical potential (dark potential) can be obtained.Then, transfer storage is produced
Part changes with the image color of the part not producing transfer storage, there is the problem being difficult to obtain good image.
On the other hand, mono-layer electronic photographic photoreceptor has positively charged type and electronegative type, the band of Electrophtography photosensor
Electrically there is contact band electrically with noncontact band electrically, when the surface making Electrophtography photosensor is charged, from hardly
Can produce from the standpoint of Electrophtography photosensor life-span and office environment are brought the oxidizing gas such as dysgenic ozone,
Preferably contact band is electrically combined with positively charged mono-layer electronic photographic photoreceptor and use.
But, contact band electrically in, owing to region of discharge is narrow, therefore charged with the noncontact using charger etc.
Mode is compared, and chargeability is poor, it is difficult to make Electrophtography photosensor the most charged.Therefore, contact band electrically in,
In order to improve the charging uniformity on Electrophtography photosensor surface, Electrophtography photosensor is applied alternating voltage or alternating voltage
The overlapping voltage overlapping with DC voltage.But, in this case, although the problem that charging uniformity can be eliminated, but
The problem that the hot-line electrical potential on Electrophtography photosensor surface reduces is there is due to the negative composition of alternating voltage.
Therefore, from the viewpoint of making charged to the desired current potential in Electrophtography photosensor surface, contacting charged side
In formula, apply DC voltage more.But, in above-mentioned charged method, although Electrophtography photosensor surface can be made charged extremely
Desired current potential, but owing to the current potential on Electrophtography photosensor surface is the most unstable, exist and easily produce asking of transfer storage
Topic.
Consider from this reason, at the image formation dress possessing the electro-mechanical part electrically being applied DC voltage by contact band
In putting, when using positively charged mono-layer electronic photographic photoreceptor, it is very easy to produce transfer storage, easily produces transfer storage
The images such as the ghost image that generation is brought are bad.
In order to suppress the generation of transfer storage, the electric charge agent delivery using charge delivery capability excellent is effective.As
The concrete example of the electric charge agent delivery that above-mentioned charge delivery capability is excellent, patent documentation 1(Japanese Laid-Open Patent Publication 58-198425) in public
Open diphenylacetylene triphenylamine derivative, even if but using this diphenylacetylene triphenylamine derivative to be also difficult to completely
The generation of suppression transfer storage.
Summary of the invention
It is an object of the invention to, it is provided that can suppress possessing contact band DC voltage application type electro-mechanical part electrically
Image processing system in produce transfer storage, positively charged single-layer type electronics containing diphenylacetylene triphenylamine derivative
Electrophotographic photoconductor.Additionally, the present invention is provided with above-mentioned positively charged mono-layer electronic photographic photoreceptor as image carrier
Image processing system.
The mono-layer electronic photographic photoreceptor that one scheme of the present invention relates to is characterised by, photosensitive layer contains following formula
(1) the diphenylacetylene triphenylamine derivative represented.
[in formula (1), R1～R4Can be identical or different, be carbon number be the alkyl of 1～4, a, b, c and d are respectively 0
～the integer of 3].
By using the mono-layer electronic photographic photoreceptor containing this diphenylacetylene triphenylamine derivative, can suppress
Possesses the generation that the transfer in the image processing system of contact band electro-mechanical part electrically stores.
The image processing system that one scheme of the present invention relates to is characterised by possessing:
Image carrier；
Electro-mechanical part, described electro-mechanical part makes the surface of described image carrier charged；
Exposure portion, described exposure portion makes the surface of charged described image carrier expose, thus carries at described image
Electrostatic latent image is formed on the surface of body；
Development section, described latent electrostatic image developing is toner image by described development section；With
Transfer section, described toner image is transferred to transfer printing body from described image carrier by described transfer section,
Described image carrier is to use the single layer type electrophotograph of described diphenylacetylene triphenylamine derivative photosensitive
Body.
According to this technical scheme, find the stable image processing system that can obtain suppressing the generation of transfer storage.
Other purpose further of the present invention, the concrete advantage obtained according to the present invention can be by the reality of following description
Execute mode and definitely.
Accompanying drawing explanation
Fig. 1 is the figure of the structure of the positively charged mono-layer electronic photographic photoreceptor representing the present invention.
Fig. 2 is the structure diagram of an example of the image processing system representing the present invention.
Fig. 3 is the relation between the dipole moment of the cavity conveying agent representing the present invention and the absolute value of transfer storage current potential
Figure.
Detailed description of the invention
Hereinafter, embodiments of the present invention are illustrated, but the invention is not restricted to these embodiments.
[the first embodiment]
First embodiment relates to photosensitive layer and contains the diphenylacetylene triphenylamine derivative work that following formula (1) represents
Positively charged mono-layer electronic photographic photoreceptor for cavity conveying agent.
(in formula (1), R1～R4Can be identical or different, be carbon number be the alkyl of 1～4, a, b, c and d are respectively 0
～the integer of 3).
As it is shown in figure 1, the positively charged mono-layer electronic photographic photoreceptor of the first embodiment possess conductive base 12 with
And on conductive base 12 formed containing charge generating, cavity conveying agent, electron transporting agent and the list of resin glue
The photosensitive layer 14 of layer.And, if positively charged mono-layer electronic photographic photoreceptor possesses conductive base 12 and photosensitive layer 14, the most not
It is particularly limited to.Specifically, such as the positively charged mono-layer electronic photographic photoreceptor 10 as shown in (a) of Fig. 1, can lead
Electrically it is directly provided with photosensitive layer 14 on matrix 12, it is also possible to the positively charged mono-layer electronic photographic photoreceptor as shown in (b) of Fig. 1
10 ' like that, possess intermediate layer 16 between conductive base 12 and photosensitive layer 14.Additionally, such as (a) or (b) institute of Fig. 1 of Fig. 1
Showing, photosensitive layer 14 can become outermost layer and expose, it is also possible to the positively charged single layer type electrophotograph sense as shown in (c) of Fig. 1
Body of light 10 " like that, also can possess protective layer 18 on photosensitive layer 14.
Hereinafter, for positively charged mono-layer electronic photographic photoreceptor, successively conductive base and photosensitive layer are illustrated.
[conductive base]
For conductive base, if can be used as the conductive base of positively charged mono-layer electronic photographic photoreceptor, the most special
Do not limit.Specifically, the conductive material of apparatus can be enumerated and at least constitute the conductive base etc. of surface element.That is, tool
Say can be such as the conductive base formed by the material with electric conductivity body, or the material plastic covering that apparatus is conductive
The conductive base on the surface of material etc..Additionally, the material with electric conductivity can enumerate such as aluminum, ferrum, copper, stannum, platinum,
Silver, vanadium, molybdenum, chromium, cadmium, titanium, nickel, palladium, indium, rustless steel, pyrite etc..Additionally, as having the material of electric conductivity, one can be used
There is the material of electric conductivity, the two or more combinations of materials with electric conductivity can also be used, such as with alloy etc. in addition
Mode uses.Additionally, as conductive base, in the example above, preferably formed by aluminum or aluminum alloy.Thus, it is possible to provide can
Form the positively charged mono-layer electronic photographic photoreceptor of more preferable image.This is presumably because electric charge from photosensitive layer to conductive base
Migration well caused.
The shape of conductive base suitably can select according to the structure of the image processing system used, such as can be preferred
Use the matrix of lamellar, drum type etc..Additionally, the thickness of conductive base suitably can select according to above-mentioned shape.
[photosensitive layer]
The photosensitive layer possessed as positively charged mono-layer electronic photographic photoreceptor, if including at least charge generating, sky
The photosensitive layer of the single layer structure of cave agent delivery and resin glue, and cavity conveying agent is the diphenyl that following formula (1) represents
Vinyl triphenylamine derivative, then without particular limitation of.
(in formula (1), R1～R4Can be identical or different, be carbon number be the alkyl of 1～4, a, b, c and d are respectively 0
～the integer of 3).
The photosensitive layer of the positively charged mono-layer electronic photographic photoreceptor of the first embodiment, due to excellent in charge delivery capability
The diphenylacetylene triphenylamine derivative represented containing formula (1) in the middle of different cavity conveying agent as cavity conveying agent, because of
This can suppress the transfer storage produced in the transfer printing process of image formation process.
Hereinafter, the transfer storage to producing in image formation process illustrates.
Generally, the image formation process utilizing electrofax mode comprises charged operation, exposure process, developing procedure, turns
Print operation, except electrician's sequence etc..In initial operation, the most charged operation, by making the positively charged list as image carrier surface
Stratotype Electrophtography photosensor the most charged to certain potentials, thus there is positive electric charge.Then, at exposure process
In, the surface of the charged positively charged mono-layer electronic photographic photoreceptor to certain potentials is exposed, and is consequently formed electrostatic latent image.
Further, in developing procedure, by giving toner to the part of above-mentioned exposure, thus can form toner
Image, electrostatic latent image is visualized.And, in transfer printing process, it is formed at the table of positively charged mono-layer electronic photographic photoreceptor
The toner image in face is transferred to middle transfer body.Here, above-mentioned toner image is transferred to above-mentioned middle transfer body
In operation, this middle transfer body is applied negative polarity with the opposite charge polarity of positively charged mono-layer electronic photographic photoreceptor
Bias.
To above-mentioned middle transfer body apply negative polarity bias time, above-mentioned exposure partially due to there is composition on its surface
The toner of toner image, though the polarity (positive polarity) when the bias therefore applying above-mentioned negative polarity also can maintain charged.
But, unexposed partially due to do not have the toner constituting toner image on its surface, therefore inclined due to negative polarity
Pressure can have and the electric charge of charged opposite polarity (negative polarity).Exposure on result positively charged mono-layer electronic photographic photoreceptor
Part and unexposed part have the current potential of opposed polarity, this potential difference become after image when being formed transfer storage produce
Reason.
Therefore, in the present invention, the electric charge of the negative polarity becoming the above-mentioned unexposed portion of the reason of transfer storage passes through
The effect of the cavity conveying agent that the formula (1) that photosensitive layer contains represents, makes above-mentioned potential difference disappear, and produces in suppression transfer printing process
Transfer storage.
Hereinafter, to as constituting the charge generating of composition of photosensitive layer, cavity conveying agent, electron transporting agent, binding agent
Resin and additive and positively charged mono-layer electronic photographic photoreceptor and manufacture method thereof illustrate.
(charge generating)
If charge generating can use the most not as the charge generating of positively charged mono-layer electronic photographic photoreceptor
It is particularly limited to.Specifically, the X-type metal-free phthalocyanine (X-H such as descending formula (I) to represent can be enumerated2Pc), Y-shaped oxygen titanium phthalocyanines
(Y-TiOPc), perylene pigment, disazo pigment, dithione pyrrolopyrrole (dithioketo-pyrrolopyrrole)
Pigment, without metal naphthalene phthalocyanine pigment, metal naphthalene phthalocyanine pigment, side acid color, trisazo pigment, indigo pigments, azulenesFace
Material (azulenium-pigment), phthalocyanine pigments, the inorganic light conductive material such as selenium, selenium-tellurium, selenium-arsenic, cadmium sulfide, non-crystalline silicon
Powder, pyransSalt, anthanthrene quinones pigment, triphenylmethane pigment, intellectual circle's class pigment, toluene amine pigment, pyrazolines
Pigment and quinacridone-type pigments etc..
Additionally, charge generating may be used alone or in combination two or more use, to have in desired region
Absorbing wavelength.Further, especially for the numeral such as laser beam printer or facsimile machine using the light source such as semiconductor laser
The image processing system of optical system, needs the positively charged single-layer type electronics in the wavelength region of more than 700nm with light sensitivitys
Electrophotographic photoconductor, so be preferably used the such as phthalocyanines such as metal-free phthalocyanine, titanyl phthalocyanine face in above-mentioned each charge generating
Material.And, to the crystal formation of above-mentioned phthalocyanine pigment without particular limitation of, it is possible to use the phthalocyanine pigment of various crystal formations.Additionally, it is right
The image processing system of the simulated optical systems such as the electrostatic photocopier in white light sources such as use halide lamps, needs in visual field
Territory has the positively charged mono-layer electronic photographic photoreceptor of light sensitivitys, and such as perylene pigment, bisazo are therefore preferably used
Pigment etc..
(cavity conveying agent)
Cavity conveying agent is the diphenylacetylene triphenylamine derivative that following formula (1) represents.
(in formula (1), R1～R4Can be identical or different, be carbon number be the alkyl of 1～4, a, b, c and d are respectively 0
～the integer of 3).
R in formula (1)1~R4Concrete example be methyl, ethyl, n-pro-pyl, isopropyl, normal-butyl, isobutyl group, Zhong Ding
Base, the tert-butyl group.In formula (1), be equivalent to a, b, c and d of the alkyl groups that diphenylacetylene triphenylamine derivative has
Sum do not hinder in the range of the object of the invention without particular limitation of.Typically, a, b, c and d sum be preferably less than 12 whole
Number, the integer of more preferably less than 4.The diphenylacetylene triphenylamine derivative represented in formula (1) has in above-mentioned scope
Alkyl groups time, by select alkyl number and or kind, be easily adjusted diphenylacetylene triphenylamine described later derive
The value of the dipole moment of thing.During additionally, alkyl groups is too much, the molecule quantitative change of diphenylacetylene triphenylamine derivative is big, in order to
Obtain desired effect, it is sometimes desirable to substantial amounts of diphenylacetylene triphenylamine derivative.
Structural optimization that cavity conveying agent is preferably used PM3 parameter, that utilize semiempirical molecular orbital to calculate calculates to be calculated
The value of the dipole moment gone out is less than 1.30.In the diphenylacetylene triphenylamine derivative that formula (1) represents, use above-mentioned value
During the compound of dipole moment, the easily generation of suppression transfer storage.
Additionally, the cavity conveying agent that value is less than 1.00 of the most above-mentioned dipole moment of cavity conveying agent.Formula (1) represents
Diphenylacetylene triphenylamine derivative in, when using the compound of dipole moment of above-mentioned value, can particularly good suppress
The generation of transfer storage, therefore, easily forms the good image not having the images such as ghost image bad.
Structural optimization that use PM3 parameter, that utilize semiempirical molecular orbital to calculate calculates and such as can pass through
MOPAC97 program etc. is carried out.
In the diphenylacetylene aryl amine derivatives that formula (1) represents, as the concrete example of preferred compound, Ke Yiju
Go out following HTM-1 ~ HTM-7.And, it is attached to the use MOPAC97 that numerical value is each compound of the bottom right of structural formula of compound
The value of calculation of the dipole moment that program obtains.
These compounds are less than 1.00 due to the value of calculation of dipole moment, from can particularly good suppress transfer storage
It it is preferred compound from the standpoint of generation.
The preparation method of the compound that mutual-through type (1) represents without particular limitation of.System as the compound that formula (1) represents
Preparation Method, can enumerate what the diethyl phosphonate that the triphenylamine derivative that such as makes formula (2) represent and formula (3) represent reacted
Method.And, for formula (2) and formula (3), R1~R4, a, b, c identical with formula (1) with d.
If cavity conveying agent is not hindering in the range of the object of the invention, then the diphenylethlene represented except formula (1)
Outside base triphenylamine derivative, it is also possible to containing variousization being used as cavity conveying agent in Electrophtography photosensor all the time
Compound.The cavity conveying agent being used together as the compound that can represent with formula (1), can enumerate such as benzidine and derive
Thing, 2,5-bis-(4-methylamino phenyl)-1,3,4-Diazole etc.Diazoles compound, 9-(4-diethylamino styrene
Base) carbazole compound such as styrene compound, Polyvinyl carbazole, organopolysilane compound, the 1-phenyl-3-such as anthracene
Outside the compound that pyrazoline compounds, hydrazone compounds, the formulas (1) such as (to dimethylaminophenyl) pyrazoline represent
Triphenylamine compound, Benzazole compounds,Azole compounds, differentAzole compounds, thiazole compound, thiadiazole
The nitrogenous ring type compounds such as compound, glyoxaline compound, pyrazole compound, triazole class compounds, fused-polycyclic compounds
Deng.
(electron transporting agent)
If electron transporting agent is not hindering in the range of the object of the invention, then without particular limitation of, can exist from all the time
The electron transporting agent used in the photosensitive layer of positively charged mono-layer electronic photographic photoreceptor suitably selects use.As preferably
The concrete example of electron transporting agent, naphthoquinone derivatives, diphenoquinone, anthraquinone derivative, azo quinone can be enumerated
(azoquinone) quinone derivative such as derivant, nitroanthraquinone derivant, dinitroanthraquinone derivant, Cyanoacetyl-Cyacetazid derivant, thiophene
Mutter derivant, trinitro-thioxanthone derivates, 3,4,5,7-tetranitros-9-Fluorenone derivant, dinitro anthracene derivant, dinitro
Acridine derivatives, 1,1,2,2-tetracyanoethene, 2,4,8-trinitro-thiaxanthones, dinitro benzene, dinitro anthracene, dinitro acridine, succinic anhydrides,
Maleic anhydride and dibromomaleic acid acid anhydride etc..Among them, more preferably quinone derivative.
(resin glue)
If resin glue can serve as the binding agent contained in the photosensitive layer of positively charged mono-layer electronic photographic photoreceptor
Resin then without particular limitation of.As the concrete example of the resin being preferably used as resin glue, polycarbonate resin, benzene can be enumerated
Vinyl resins, SB, SAN, styrene-maleic acid copolymer, benzene second
Alkene-acrylic copolymer, acrylic copolymer, polyvinyl resin, vinyl-vinyl acetate copolymer, chlorinated polyethylene resin,
Corvic, acrylic resin, ionomer, vinyl chloride vinyl acetate copolymer, alkyd resin, polyamide, poly-
Urethane resin, polyarylate resin, polysulfone resin, diallyl phthalate resin, ketone resin, polyvinyl butyral resin tree
The thermoplastic resins such as fat, polyether resin, polyester resin, organic siliconresin, epoxy resin, phenolic resin, carbamide resin, tripolycyanamide
The thermosetting resins such as resin, other bridging property thermosetting resins, Epocryl, polyurethane acrylic emulsion copolymerization tree
The light-cured resins such as fat.These resins can be used alone, it is possible to is used in combination of two or more.
Among these resins, from the sense of the balancing good obtaining processability, mechanical characteristic, optical characteristic, mar proof
From the viewpoint of photosphere, more preferably bisphenol z-polycarbonate resin, bisphenol Z c-type polycarbonate resin, the poly-carbonic acid of bisphenol-c type
The polycarbonate resins such as ester resin and bisphenol A polycarbonate resin.
(additive)
Electrofax characteristic will not brought harmful effect by the photosensitive layer of positively charged mono-layer electronic photographic photoreceptor
In the range of, in addition to charge generating, cavity conveying agent, electron transporting agent and resin glue, also can comprise various adding
Add agent.The additive in photosensitive layer can be coupled to and can enumerate such as antioxidant, radical scavenger, singlet quencher
Anti-deterioration agent, softening agent, plasticizer, surface modifier, extender, the increasing such as (singlet quencher), UV absorbent
Thick dose, dispersion stabilizer, wax, receptor, donor, surfactant and levelling agent etc..
(manufacture method of positively charged mono-layer electronic photographic photoreceptor)
If the manufacture method of positively charged mono-layer electronic photographic photoreceptor is not hindering in the range of the object of the invention, the most not
It is particularly limited to.The preference of the manufacture method of positively charged mono-layer electronic photographic photoreceptor can be enumerated and be coated with on conductive base
The coating fluid of cloth photosensitive layer forms the method for photosensitive layer.Specifically, by charge generating, cavity conveying agent, electron transport
The coating solution that agent, resin glue and the various additives etc. added as required are dissolved or dispersed in solvent
On conductive base, it is dried, thus can manufacture photosensitive layer.To coating process without particular limitation of, can enumerate and such as make
With spin coater, apply the method smearing machine, flush coater, wire rod coating machine, dip coater, scraper etc..Additionally, be formed at electric conductivity
The drying means of the film on matrix can enumerate such as 80～150 DEG C, carry out hot air drying under conditions of 15～120 minutes
Method etc..
In positively charged mono-layer electronic photographic photoreceptor, charge generating, cavity conveying agent, electron transporting agent and bonding
Each content of agent resin can suitably select, without particular limitation of.Specifically, the content of such as charge generating is relative to binding agent
Resin 100 mass parts, preferably 0.1～50 mass parts, more preferably 0.5～30 mass parts.The content of electron transporting agent is relative
In resin glue 100 mass parts, preferably 5～100 mass parts, more preferably 10～80 mass parts.Containing of cavity conveying agent
Amount is relative to resin glue 100 mass parts, preferably 5～500 mass parts, more preferably 25～200 mass parts.Additionally, it is empty
The content of cave agent delivery and the total amount of electron transporting agent, i.e. electric charge agent delivery, relative to resin glue 100 mass parts, is preferably
20～500 mass parts, more preferably 30～200 mass parts.
The photosensitive layer thickness of positively charged mono-layer electronic photographic photoreceptor, as long as the effect of photosensitive layer can fully be played, then
Without particular limitation of.Specifically, the most preferably 5～100 μm, more preferably 10～50 μm.
As long as the solvent solubilized contained by the coating fluid of photosensitive layer or dispersion constitute each composition of photosensitive layer, the most special
Do not limit.Specifically, the alcohols such as methanol, ethanol, isopropanol, butanol can be enumerated；The fat such as normal hexane, octane, hexamethylene
Race's hydrocarbon；The aromatic hydrocarbons such as benzene,toluene,xylene；The halogenated hydrocarbons such as dichloromethane, dichloroethanes, carbon tetrachloride, chlorobenzene；Dimethyl ether,
The ethers such as diethyl ether, oxolane, glycol dimethyl ether, diethylene glycol dimethyl ether；Acetone, butanone, methylisobutylketone, Ketohexamethylene
Deng ketone；The esters such as ethyl acetate, methyl acetate；The aprotic polar such as dimethylformaldehyde, dimethylformamide, dimethyl sulfoxide
Organic solvent.These solvents can be used alone, it is possible to is used in combination of two or more.
Positively charged mono-layer electronic photographic photoreceptor can be used as the DC voltage applying possessing contact band electrically described later
The image carrier of the image processing system of the electro-mechanical part of type.Thus, even if at the belt electrode of mono-layer electronic photographic photoreceptor
Property be positively charged, band electrically for apply the contact band of DC voltage electrically easily produce transfer storage under conditions of, energy
Suppression transfer storage, thus can suppress the generation that image is bad.
[the second embodiment]
Second embodiment relates to image processing system, possesses image carrier；Electro-mechanical part, this electro-mechanical part is to make image hold
The electro-mechanical part that the surface of carrier is charged；Exposure portion, this exposure portion makes the surface of charged image carrier expose, thus at image
Electrostatic latent image is formed on the surface of supporting body；Development section, latent electrostatic image developing is toner image by this development section；And transfer
Portion, toner image is transferred to transfer printing body from image carrier by this transfer section, uses first to implement as image carrier
Band in mode just band mono-layer electronic photographic photoreceptor.
Additionally, the image processing system of the present invention is applicable to monochrome image forms device, color image forming device
Any one, but at this, color image forming device of the series system using multiple color toner is illustrated.
And, in order to be formed toner image by the toner of different colours the most respectively, the tool of following description
The image processing system of standby band just band mono-layer electronic photographic photoreceptor possesses multiple image carrier and multiple development section, and these are many
Individual image carrier in the prescribed direction and sets, and the plurality of development section has oppositely disposed with each image carrier, from the teeth outwards
Carry and transport toner, the toner of transport is supplied respectively to the developer roll on each image carrier surface, each image carrier
Use the just band mono-layer electronic photographic photoreceptor of the band in the first embodiment respectively.
Fig. 2 is the color image forming device knot representing and possessing the band just series system of band mono-layer electronic photographic photoreceptor
The schematic diagram of structure.Here, as image processing system, illustrate as a example by color printer 1.
As in figure 2 it is shown, this color printer 1 has the equipment body 1a of box, in this equipment body 1a, it is provided with confession
To the sheet feed section 2 of paper using P, transport paper using P supplied by this sheet feed section 2 and toner image based on view data etc. is transferred
Image forming part 3 in this paper using P and to the unfixed toner image utilizing this image forming part 3 to be transferred in paper using P
Implement the fixing section 4 of the fixing process being fixed in paper using P.Further, equipment body 1a be provided above with output profit
The paper delivery portion 5 of paper using P of fixing process is implemented by fixing section 4.
Sheet feed section 2 includes paper feeding cassette 121, takes paper bowl 122, paper feed roller 123,124,125 and resistance roller 126.Paper feeding cassette
121 are arranged to dismount from equipment body 1a, store paper using P of various sizes.Take paper bowl 122 and be arranged on the paper supply shown in Fig. 2
The position, upper left side of box 121, takes out one by one and is stored in paper using P in paper feeding cassette 121.Paper feed roller 123,124,125 will be logical
Cross take paper bowl 122 take out paper using P pass out to use paper-delivering path.Resistance roller 126 makes to be sent by paper feed roller 123,124,125
After waiting for by paper using P of paper-delivering path, it is supplied to image forming part 3 with the timing of regulation.
Additionally, sheet feed section 2 farther includes to be arranged on the manual pallet of the left surface of the equipment body 1a shown in Fig. 2 (not
Diagram) and take paper bowl 127.This takes paper bowl 127 and takes out paper using P being positioned on manual pallet.Utilize and take the use that paper bowl 127 takes out
Paper P passes out to, with paper-delivering path, be supplied to image shape by resistance roller 126 with the timing of regulation by paper feed roller 123,125
One-tenth portion 3.
Image forming part 3 includes image formation unit 7；Intermediate transfer belt 31, based on the figure from electric transmission such as computers
As the toner image of data is transferred to its surface (contact surface) by this image formation unit 7；With secondary transfer roller 32,
Toner image on this intermediate transfer belt 31 is secondarily transferred to paper using P sent into from paper feeding cassette 121.
Image formation unit 7 includes from upstream side (for right side in Fig. 2) the black unit that side arranges successively downstream towards
7K, yellow unit 7Y, cyan unit 7C and magenta unit 7M.In each unit 7K, 7Y, 7C and 7M respective central authorities position
Put the positively charged single layer type electrophotograph as image carrier being equipped with rotating along arrow (clockwise) direction photosensitive
Below body 37(is photoreceptor 37).And, around each photoreceptor 37, band it is each configured with successively from rotation direction upstream side
Electricity portion 39, exposure portion 38, development section 71, cleaning section (not shown) and de-power unit (not shown) as required.And, photoreceptor 37
Use the positively charged mono-layer electronic photographic photoreceptor of the Electrophtography photosensor related to as the first embodiment.
Electro-mechanical part 39 makes the side face of photoreceptor 37 rotated in the direction of the arrow the most charged.Concrete as electro-mechanical part 39
Example, can enumerate and make when charged roller or band brush etc. contact with photoreceptor 37 side face (surface) of photoreceptor 37 charged
, the electro-mechanical part of the charged roller possessing the way of contact and band brush etc., the electro-mechanical part that possess charged roller is preferably used.
Possess the electro-mechanical part of the charged roller of the way of contact, when charged roller contacts with photoreceptor 37, turn drivenly
Dynamic, the side face (surface) making photoreceptor 37 is charged.
As this charged roller, the roller etc. that for example, at least surface element is made up of can be enumerated resin.Specifically, Ke Yiju
Go out when contacting with photoreceptor 37, be subordinated to the rotation of photoreceptor 37 and rotate, possess and supported by axle rotationally
Cored bar, the resin bed being formed on cored bar and cored bar is executed the charged roller etc. of alive voltage application portion.Possesses this
The electro-mechanical part of kind charged roller, by cored bar being applied voltage by voltage application portion, can make the photoreceptor 37 contacted by resin bed
Surface charged.
The voltage applied charged roller by voltage application portion is not particularly limited, but with apply alternating voltage or alternating current
Pressure, compared with during the overlapping voltage of DC voltage overlap, is preferably only DC voltage.Charged roller is only applied DC voltage
Time, there is the trend that the wear extent of photosensitive layer reduces, suitable image can be formed.
The DC voltage applying positively charged mono-layer electronic photographic photoreceptor is preferably 1000～2000V, more preferably
1200～1800V, particularly preferably 1400～1600V.
Image processing system includes possessing the electro-mechanical part applying DC voltage of charged roller and as the band of image carrier
During positive electricity mono-layer electronic photographic photoreceptor, there is the trend being particularly easy to produce transfer storage, but use the first embodiment party
When the positively charged mono-layer electronic photographic photoreceptor that formula relates to is as image carrier, transfer storage, suppression image can be suppressed
Bad generation.
Additionally, constitute the resin of resin bed of charged roller, if the side face of photoreceptor 37 can be made the most charged, the most special
Do not limit.The concrete example of the resin used in resin bed can enumerate organic siliconresin, polyurethane resin, Si modification resin etc..
Additionally, resin bed can contain inorganic filling material.
Exposure portion 38 is so-called laser scan unit, shines the side face of the photoreceptor 37 by electro-mechanical part 39 uniform charged
Penetrate laser based on the view data inputted from the personal computer (PC) of epigyny device, based on view data on photoreceptor 37
Form electrostatic latent image.Development section 71 is by the side face supply toner to the photoreceptor 37 being formed with electrostatic latent image, based on image
Data form toner image.Then, this toner image is transferred to intermediate transfer belt 31.Cleaning section is in toning
Agent image is after the primary transfer of intermediate transfer belt 31 terminates, and the toner of the side face remaining in photoreceptor 37 is cleaned.Remove
The side face of photoreceptor 37, after primary transfer terminates, is carried out except electricity by electricity portion.Cleaned by cleaning section and de-power unit
The side face of the photoreceptor 37 processed, in order to implement new on-line treatment, carries out new on-line treatment towards electro-mechanical part.
Intermediate transfer belt 31 is the banding rotor that non junction is ring-type, is erected at driving roller 33, driven voller 34, supports roller
Multiple rollers such as 35 and primary transfer roller 36 are so that surface (contact surface) side side face with each photoreceptor 37 respectively abuts.In additionally,
Between transfer belt 31 when being expressed to photoreceptor 37 by the primary transfer roller 36 oppositely disposed with each photoreceptor 37, by many
Individual roller carries out non junction rotation.
Roller 33 is driven to carry out rotating driving by driving sources such as stepping motors, it is provided that to be used for making intermediate transfer belt 31 without connecing
The driving force that head rotates, driven voller 34, support roller 35 and primary transfer roller 36 are rotated arranging freely, along with by driving roller
The non junction of the intermediate transfer belt 31 that 33 are carried out rotates and driven rotation.The response of these rollers 34,35,36 drives the active of roller 33 to turn
Move and carry out driven rotation by intermediate transfer belt 31, and intermediate transfer belt 31 is supported.
Primary transfer bias (with the charged opposite polarity polarity of toner) is applied to middle turning by primary transfer roller 36
Print band 31.By so processing, it is formed at the toner image on each photoreceptor 37 and transfers successively (once to repeat coating state
Transfer) to intermediate transfer belt 31, this intermediate transfer belt 31 is between each photoreceptor 37 and primary transfer roller 36, by driving roller 33
Driving rotate along arrow (counterclockwise) direction.Then, carry out as required by the surface of each photoreceptor 37 being entered except electric light
Row except electricity de-power unit (not shown) except electricity after, each photoreceptor 37 rotates further, enters next technique.Now, more excellent
Choosing is not carried out except electrically operated.Do not carry out except time electrically operated, owing to color printer 1 can be formed, not there is the composition of de-power unit,
Therefore the manufacturing cost that the miniaturization of color printer 1, the reduction of parts number of packages can be made to bring reduces.Do not possesses de-power unit
Time, although be more prone to transfer storage, but by use photoreceptor that the first embodiment relates to as photoreceptor 37, i.e.
Make the color printer 1 for not possessing de-power unit, it is also possible to suppression transfer storage.
Secondary transfer printing with toner image opposite polarity is biased and is applied to paper using P by secondary transfer roller 32.By so
Processing, the toner image being transferred on intermediate transfer belt 31 is transferred to use between secondary transfer roller 32 and support roller 35
Paper P, thus, colored transferred image (unfixed toner image) is transferred to paper using P.
Fixing section 4 is that the transferred image being transferred in paper using P by image forming part 3 is implemented the parts of fixing process, bag
Including heating roller 41 and backer roll 42, wherein, heating roller 41 is heated by heating power body, backer roll 42 and this heating roller 41 to
Configuration and side face are extruded the side face abutting to heating roller 41.
And, the transferred image utilizing secondary transfer roller 32 to be transferred to paper using P by image forming part 3 is led to by this paper using P
The fixing process that heating when crossing between heating roller 41 and backer roll 42 is carried out, is fixed to paper using P.And, implement fixing
Paper using P processed exports paper delivery portion 5.Additionally, in the color printer 1 of present embodiment, fixing section 4 and paper delivery portion 5 it
Between suitable position be equipped with transport roller 6.
Paper delivery portion 5 is formed, at the end of the recess of this depression by the top of the equipment body 1a of depression color printer 1
Portion is formed with the paper discharging tray 51 of paper using P receiving output.
By above-mentioned image forming operation, color printer 1 forms image, the image of above-mentioned series system in paper using P
Formed device owing to possessing the positively charged mono-layer electronic photographic photoreceptor in the first embodiment as image carrier, even if
Apply DC voltage contact band band electrically electrically, image carrier be positively charged mono-layer electronic photographic photoreceptor
The condition easily producing transfer storage time, be not easy to produce transfer storage, therefore can obtain being formed the figure of suitable images
As forming device.
[embodiment]
By the following examples the present invention is carried out more specific description.And, the present invention is not carried out example and is limited.
In embodiment and comparative example, use following cavity conveying agent (HTM-1 ~ HTM-13) and electron transporting agent
(ETM-1 ~ ETM-4).And, the numerical value of the bottom right of cavity conveying agent is by the calculated dipole moment of MOPAC97 program
Value.
<HTM-1~HTM-13>
<ETM-1~ETM-4>
[embodiment 1]
By metal-free phthalocyanine 5 mass parts, cavity conveying agent (HTM-1) 50 mass parts, electron transporting agent (ETM-1) 35 mass
Part, bisphenol z-polycarbonate resin 100 mass parts of viscosity-average molecular weight 50,000 and oxolane 800 mass parts join ball
In grinding machine, the mixing, the dispersion that carry out 50 hours process, and prepare the coating fluid of photosensitive layer.The coating fluid that will obtain with dip coating
It is coated on conductive substrate, and processes 40 minutes at 100 DEG C, film remove oxolane, thus obtain possessing 30 μm
The positively charged mono-layer electronic photographic photoreceptor of the photosensitive layer of thickness.
[embodiment 2 ~ 10 and comparative example 1 ~ 9]
Cavity conveying agent (HTM) and electron transporting agent (ETM) are changed into the kind that table 1 is recorded, in addition with enforcement
Example 1 is similarly carried out, and obtains positively charged mono-layer electronic photographic photoreceptor.
It is assembled to change electro-mechanical part by the positively charged mono-layer electronic photographic photoreceptor obtained in embodiment and comparative example
Dress is for applying on the printer (FS-5300DN, Kyoji, Meida K.K's system) of the charged roller of DC voltage, by closedown transfer partially
Blank sheet of paper portion current potential during pressure is evaluated as transfer storage with blank sheet of paper portion difference in voltage when opening transfer bias.Additionally, enter
After row durable printing in 1 hour, observe printing image, the generation bad with or without image is evaluated.In the evaluation of image, will not
Observe the bad situation of image as ◎, by the physical control block (ベ タ パ Star チ) of 10mm in halftoning portion with ghost image
The state that mode occurs is as zero, and while being occurred in ghost image mode by above-mentioned physical control block, the letter of 3mm is with ghost image
But there is the state that its word can not be unambiguously read as △ in mode, is occurred in ghost image mode by above-mentioned physical control block
While the letter of on one side 3mm occur in ghost image mode, be unambiguously read the state of its word as ×.Transfer storage and image
Evaluation result as shown in table 1.
[table 1]
According to embodiment 1 ~ embodiment 10, possess, if using, the diphenylacetylene triphen represented containing formula (1)
Amine derivative (HTM-1 ~ HTM-7) as the positively charged mono-layer electronic photographic photoreceptor of the photosensitive layer of cavity conveying agent, even if
For possess apply DC voltage contact band electro-mechanical part electrically, possess positively charged mono-layer electronic photographic photoreceptor as figure
Image processing system as the easily generation transfer storage of supporting body, it is also possible to suppression transfer stores, forms suitable image.
Additionally, the value of calculation of the dipole moment of HTM-1 ~ HTM-7 is all less than 1.00, therefore in embodiment 1 ~ embodiment 10
In, transfer storage current potential can be suppressed well, the good image not observing that image is bad can be formed.
On the other hand, according to comparative example 1 ~ comparative example 9, the diphenylacetylene three represented containing formula (1) is used
When the positively charged mono-layer electronic photographic photoreceptor of the cavity conveying agent outside anil is as image carrier, possessing
Apply the contact band electro-mechanical part electrically of DC voltage, possess positively charged mono-layer electronic photographic photoreceptor and carry as image
In the image processing system of body, it is impossible to suppression transfer storage, easily produce image bad.
For embodiment 1 ~ embodiment 10 and comparative example 1 ~ comparative example 5, the absolute value of dipole moment and transfer storage current potential it
Between relation as shown in Figure 3.Additionally, for embodiment 1 ~ embodiment 10 and the data of comparative example 1 ~ comparative example 5, carry out linearisation
The near linear obtained is as shown in Figure 3.
According to Fig. 3, the value of calculation of the dipole moment of cavity conveying agent is the lowest, and the inhibition of transfer storage is the highest.This
Outward, according to Fig. 3, for diphenylacetylene triphenylamine derivative, the value of calculation of dipole moment more than 1.00 and be 1.30 with
Time lower, transfer storage current potential is about-50 ~-60V.Now, although image can be suppressed bad owing to transfer storage is inhibited
Generation, but due to transfer storage current potential absolute value slightly higher, easily produce ghost image.
Further, according to Fig. 3, for diphenylacetylene triphenylamine derivative, the value of calculation of dipole moment is
When less than 1.00, the absolute value of transfer storage current potential is below 50V.Now, owing to the absolute value of transfer storage current potential is substantially low,
Thus without producing ghost image, the picture appraisal carried out in an embodiment is judged to " ◎ ".
Claims (5)
1. an Electrophtography photosensor, it is characterised in that formed including at least charge generating, electric charge on conductive base
The photosensitive layer of the single-layer type of agent delivery and resin glue, described photosensitive layer only uses following HTM-as cavity conveying agent
4 or HTM-5 and contain following ETM-4 as electron transporting agent,
Electrophtography photosensor the most according to claim 1, use PM3 parameter, utilize semiempirical molecular orbital to calculate
The value of the dipole moment of described cavity conveying agent that is calculated by of structural optimization be more than 0.60 and less than 0.61.
Electrophtography photosensor the most according to claim 2, the value of the described dipole moment of described cavity conveying agent is 0.60.
4. an image processing system, it is characterised in that possess:
Image carrier；
Electro-mechanical part, described electro-mechanical part makes the surface of described image carrier charged；
Exposure portion, described exposure portion makes the surface of charged described image carrier expose, thus at described image carrier
Surface forms electrostatic latent image；
Development section, described latent electrostatic image developing is toner image by described development section；With
Transfer section, described toner image is transferred to transfer printing body from described image carrier by described transfer section,
Described image carrier is the Electrophtography photosensor described in any one in claims 1 to 3.
Image processing system the most according to claim 4, it is characterised in that described image carrier is for possessing single-layer type sense
The positively charged Electrophtography photosensor of photosphere, described electro-mechanical part is contact band DC voltage application type electrically.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2011-166092 | 2011-07-28 | ||
| JP2011166092A JP5622681B2 (en) | 2011-07-28 | 2011-07-28 | Positively charged single layer type electrophotographic photosensitive member and image forming apparatus |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102902170A CN102902170A (en) | 2013-01-30 |
| CN102902170B true CN102902170B (en) | 2016-11-30 |
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