JPS61114275A - Image forming device - Google Patents

Abstract

PURPOSE:To reduce the size of the whole device by storing the residue of a cleaned visual image in an image carrier. CONSTITUTION:The residual developer of a visual image on a cleaned photosensitive body 10 which is deposited in a cleaner box 133 is conveyed, carried, and stored in the image carrier. For example, the residual developer is carried in a toner storage box 117 through the rotation of, for example, conveying auger 116, and conveyed to the side of a photosensitive body 10 by a spiral conveying auger 121 which is driven, and this conveying auger 121 is inserted into the insertion hole 106a of a font flange 106a on an end surface of a photosensitive body 10, so that the developer is carried and stored in the photosensitive body 10 through the hollow drum shaft 142 of a drum shaft flange 141.

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention relates to an image forming apparatus including a cleaning means for cleaning developer remaining on an image bearing member, such as an electronic copying machine.

[Technical background of the invention and its problems]

Conventionally, cleaning devices for this type of electronic copying machine include:
As illustrated in FIG. 30, a cylindrical (drum)-shaped image carrier (hereinafter referred to as photoreceptor) 3 charged by an appropriate means
An electrostatic latent image is formed on the 00, and this electrostatic latent image is visualized by a developing system and transferred to a predetermined image support (hereinafter referred to as transfer material).
The cleaning blade 301 contacts the surface of the photoreceptor 3000 with the residue of the developer image (hereinafter referred to as a visible image) remaining on the photoreceptor 300 after transfer, that is, the developer. The toner toner box 303 has a structure in which the residual developer after cleaning can be carried to the front side of the apparatus main body by an ojf-so2 in the form of a suction roller and stored in the waste toner box 303. ing.

However, in the residual developer storage means in such a conventional apparatus, the waste toner box 303 is installed in a hanging state at the front part of the apparatus main body, so that the waste toner is disposed of in the box 303. Or, during maintenance and inspection, it may be difficult to handle the cleaner section or the cleaner and photoconductor unit, since the waste toner fixture 303 is installed inside the front cover of the main body of the device. This resulted in problems such as the waste toner box being required to be replaced frequently.

Conventionally, as another means, as illustrated in FIG.
04, and the residual developer scraped off by the cleaning blade 301 is directly stored in this waste toner box 304. This requires a large volume, and there are problems in that the cleaner section or the unit section of the cleaner and the photoreceptor becomes large.

[Purpose of the invention]

The present invention has been made based on the above-mentioned circumstances, and it is possible to install the cleaned visible image residue (developer in copying machines, etc.) storage section in a space-saving position, and as a result, the entire device can be cleaned. An object of the present invention is to provide an image forming apparatus which is designed to be downsized.

[Summary of the invention]

In order to achieve the above object, the present invention provides a cleaner section or a unit of a cleaner and an image carrier by configuring the cleaned visible image residue to be stored inside the image carrier. This feature is characterized in that it allows for miniaturization of the unit.

[Embodiments of the invention]

Hereinafter, the present invention will be explained in detail with reference to an embodiment shown in FIGS. 1 to 27.

FIGS. 1 and 2 show the overall internal structure of an image forming apparatus, such as an electronic copying machine, according to the present invention, and numeral 1 in the figures indicates the main body of the copying machine. This copying machine main body 1 includes an image support (hereinafter referred to as a transfer material) (not shown) that is conveyed by a feeding device 4 consisting of a paper feed cassette 2 or a manual feed guide 3 via a drive system 5 and a control system 6. As shown in FIG. 2, the upper half on the document table 8 side with the conveyance path leading to the paper output tray 7 as the boundary can be opened and closed, and an image of a document (not shown) placed on the document table 8 can be opened and closed. When copying, a drum-shaped image bearing member (hereinafter referred to as a photoreceptor) 10 constituting a transfer device 9 is charged by a charger 11)-500.
A document image uniformly charged to V~-900V and uniformly irradiated by an exposure lamp 13 constituting an exposure device 12 is transferred to a focusing transmitter (product name: Self-Hox lens array) 14. An electrostatic latent image is formed on the photoreceptor 10, and this electrostatic latent image is visualized by a developing device 15 and transferred onto the transfer material conveyed from the feeding device 4 by a transfer charger 16. The visible image is transferred via the fixing device 17, and is then ejected to the paper ejection tray 7.
The developer (hereinafter referred to as toner) remaining on the photoreceptor 10 after transfer is cleaned by a cleaning device 18, and the static electricity is removed by a static eliminator 19.

That is, the feeding device 4 can feed out the transfer material P accumulated in the paper feeding cassette 2, for example, by rotating the half-moon-shaped paper feeding roller 21 so as to form the furrows shown in FIGS. 3 to 6. The paper feed roller 21 enables the main drive system and the spring clutch 22 to connect and disconnect the driving force, and connects the claw portion 24a of the operator 24 of the solenoid 23 to the sleeve of the spring clutch 22. While the rotation of the paper feed roller 21 is stopped by engaging the protrusion 22a protruding from the protrusion 22a, the claw portion 24a is detached from the protrusion 22a due to the retraction action of the operator 24 due to the excitation of the solenoid 23. At this time, the paper feed roller 22 is rotated one rotation to feed the transfer material P so that it reaches a pair of feed rollers consisting of a drive roller 25 and a driven roller 26, and the transfer material P is further fed by this pair of feed rollers 25 and 26. is fed to an aligning roller pair consisting of a driving roller 27 attached to the lower unit and a driven roller 28 attached to the upper unit. At this time, the ashining roller pair 27 and 28 are in a stopped state, and are rotated again at a timing when the leading edge of the visible image on the photoreceptor 10 and the leading edge of the transfer material P can coincide with a predetermined position. is conveyed through the front guides 29, 30 so as to come into contact with the photoreceptor 10, thereby enabling transfer. Then, the transfer material P after transfer
is held by a pair of holding rollers 31 and 32 and conveyed to a fixing device 17, which will be described later. A peeling tape 33 is disposed whose other end is fixed by passing it between the nipping rollers 31 and 32, so that the transfer material P can be forcibly peeled off from the photoreceptor 10 by this peeling tape 33. . On the other hand, numeral 34 in the figure indicates the insertion port of the manual feed guide 3, and the transfer paper P inserted from this insertion port 34 is passed between the pair of manual feed rollers 35 and 36 to operate the detection switch 37. By pressing the copy button in this state, the drive rollers 35 of the manual feed roller pair 35 and 36 are rotated to feed the transfer material P to the aligning roller pair 27 and 28, and similar transfer is performed. At this time, the paper feed roller 2
1 is controlled not to rotate. As shown in FIG. 4, the lower drive roller 35, which is one of the twisted pair of manual feed rollers, moves in the traveling direction of the transfer material P (indicated by the solid line arrow).
The other upper driven roller 36 is arranged obliquely with respect to the transfer material P, and the other upper driven roller 36 is formed in a spherical shape, thereby functioning to correct the skew of the transfer material P.

7 and 8 show the driving mechanism of the document table 8. A guide plate 4 is provided at the bottom of the document table 8, and the document table 8 is inserted into the engagement hole 41a formed in the guide plate 41. A guide roller 43 fixed to a chain 742 that moves along the moving direction of
The chain 42 is engaged with the gear 44, and the document table 8 is driven by the movement of the chain 42.
The hook is passed to a Sugerocket 45 formed integrally with the gear 44, and this gear 44 meshes with a gear 47 that is supported by a swing lever 46 that rotates about its central axis as a fulcrum. The chain 42 is moved by releasably engaging a gear 50 which is rotatably supported at one end of the chain 48 via a stud 49 and driving the gear 50 to rotate. A driving force from a drive motor 51 is applied to a gear group 50 which is pivotally supported on the rotary lever 48.
, 53 and 54, and the rotation lever 48 is always urged upward toward the other end by a spring 55, that is, in a direction in which the gear 50 is disengaged from the gear 47, The other end is connected to a solenoid 57 via a connecting rod 56, and the suction action of the solenoid 57 moves the rotary lever 48 in the X direction (counterclockwise) shown in FIG. The gear 50 is rotated to mesh with the gear 47. At this time, the suction force of the solenoid 57 is set to be stronger than the tension of the spring 55, and the gear 50 is constantly lifted upward in the direction of engagement with the toothed gear 47 during rotation due to the force applied to the tooth surface meshing with the gear 47. When the main drive is stopped by stopping the drive motor 51, the rotating lever 48 is rotated clockwise by the biasing force of the spring 55 because there is no rotational force to lift the gear 50. , and the gear 50 is detached from the gear 47. Further, a positioning plate 58 is attached to the chain 42, and this plate 58 operates a microswitch 59 fixed to a fixed frame (not shown), and when the microswitch 59 is pressed during the initial copy operation, the transfer The material P is fed, the chain 42 is rotated once, and then the grate 5
8 presses the micro switch 59, the drive motor 5I is stopped, the gears 47 and 50 are disengaged, and the document table 8 is stopped. In this case, the gear 47 and the gear 50 have guide rollers (not shown) to keep the distance between their axes constant when they mesh and rotate. Further, this drive mechanism is such that the document table 8 is coupled to the main drive system by one operation of the lensoid 57.
The transfer material conveyance path is set so that the previously fed transfer material has already been discharged when the next paper is fed. Furthermore, in continuous copying, it is possible to achieve one copy per rotation of the document table by issuing a paper feed signal.

9 to 11 show an exposure apparatus 12, in which an exposure lamp 13, a focusing transmitter 14,
Each component such as the static eliminator 19 and the reflection plates 62 and 63 are assembled. The fixed frame 61 also serves as a holding member so as to vertically hold the focusing transmitter 14, and a temperature fuse 64 is positioned and fixed at a proper position. That is, the exposure device 12
A pair of upper and lower reflectors 62.6 reflect the light from the exposure lamp 13.
A static eliminator 6 condenses light to illuminate a document placed on a document table 8 and constitutes a static eliminator 19 to be described later.
The upper reflecting section 66 of No. 5 illuminates the original by reflecting the light L1 against the transmitter 14 from the side opposite to the light source of the exposure lamp 13, thereby preventing the formation of shadows even if the original has irregularities. It looks like this. Further, an opening 63h and a reflecting portion 63b are formed in the lower reflecting plate 63 so that the light from the exposure lamp 13 can be guided directly onto the photoreceptor 10, and this direct light can cause the photoreceptor 10 to be charged before being charged. It is possible to eliminate static electricity. Furthermore, the exposure lamp 13 is arranged as shown in FIGS. 10 and 11.
Both ends are held by the power supply terminal 67, and the power supply terminal 67
A screw 69 is screwed into the middle portion of which one end is fixed with a screw 68, and the position of the exposure lamp 13 with respect to the reflector plate 62, 63 can be variably adjusted by rotating the screw 69 so that the exposure lamp 13 can be moved up and down. This function balances the amount of light in the longitudinal direction of the illuminated portion of the document, making it easy to obtain a uniform and even copy image.

A static eliminator 65 constituting the static eliminator 19
opens and closes in accordance with the movement of the document table 8, closes when an electrostatic latent image is being formed on the photoreceptor 10, and opens at other times to direct light from the exposure lamp 13 onto the photoreceptor 10. The opening/closing mechanism is structured as shown in FIGS. 12 and 13 to reduce toner consumption by erasing excess potential of the photoreceptor 10. That is, the static elimination shutter 65 has a light shielding member 65h on the back surface, and is always urged in the closing direction by a spring 71 in conjunction with a cam mechanism that aligns the transfer material and replenishes toner. A kick member 72 is attached to the lower part of the table 8, and the document table 8 moves in the direction A at the start of the copying operation.
With this movement, the kicking member 72 rotates the first actuator 73. This first actuator 73 is
When the document table 8 is rotated in the opposite direction by moving in the direction A, it is returned by the biasing force of the spring 74, and the sleeve 7 is moved by the spring 75.
6 is rotated. One end of a spring 78 is caught in a groove shown in the figure formed at one end of the sleeve 76, and the other end of the spring 78 is hooked to a first cam 79. A protrusion 76a is formed on the sleeve 76, and when the second actuator 77 is caught on this protrusion 76a,
The rotation of the sleeve 760 is suppressed, the biasing force of the spring 78 is released, and the first cam 79 is barely able to rotate, and when the second actuator 77 rotates, the second actuator 77 is removed from the protrusion 76a of the sleeve 76, and the sleeve 76 rotates.At this time, when the drive gear 80 rotates in the direction of arrow B, the first cam 79 also rotates in the same direction due to the biasing force of the spring 78.

The first cam 79 is formed with a large diameter portion 79a and a small diameter portion 79b, and the large diameter portion 79a has a rotation support shaft 81 of the second actuator 77 when the first cam 79 is stopped.
The other end of the first lever 82, one end of which is fixed, comes into contact with the
When the first cam 79 rotates, the first lever 82
The rotation support shaft 81 rotates by the amount of rotation of the first lever 82 and rotates the operating lever 83 fixed to the rotation support shaft 8. make it move. This operating lever 83 moves the static eliminating shutter 5 in the opening direction (in the direction of transition from the solid line state to the dotted line state in FIG. 9) against the biasing force of the spring 71, while its return force is applied to This is due to the biasing force of the spring 71. In addition, 84 in the figure is a cam that is installed in a second way so that the adjustment position can be changed to the first cam 79, and has a large diameter part 84a and a small diameter part 84b, and this large diameter part 84
1L, when the first cam 79 is stopped, one end of the swinging lever 85 is pressed against the biasing force of the spring 86;
When the other end of this swinging lever 85 is brought into contact with the protrusion 87a of the sleeve of the spring clutch 87, the transmission of driving force is blocked, and on the other hand, the swinging lever 85 is rotated by the rotation of the second cam 84. The other end is removed from the protrusion 87m of the sleeve of the spring clutch 87, and the driving force is transmitted by the biasing force of the spring 86 to rotate the shaft 88, thereby feeding the transfer material shown in FIGS. 3 and 4. Feeding device 4
The driving force is transmitted to the aligning roller pair 27 and 28. Furthermore, 89 in the figure is a spring clutch attached to a shaft 90 that transmits driving force to a toner replenishment mechanism of a developing device 15, which will be described later. When the solenoid 92 is energized and the tip of the actuating rod 93 is removed from the protrusion 91, the shaft 9Q of the spring clutch 89 is rotated to drive the toner replenishment mechanism.

By the way, the charger 11 is the ninth
As shown in the figure, a charging wire 101 and a shield 102
The distance between the photoreceptors 10 is set to 7-29, and the inflow current ratio is 7:1.
The electrostatic latent image formed on the photoconductor 10 by image exposure by the exposure device 12 is transferred to the developing device 15 (to be described later), where it is developed with toner. It is becoming more and more popular.

The photoreceptor 10 is made into a cartridge together with a charger 11 and a cleaning device 18, which will be described later.
Its structure is manufactured by applying, for example, an organic photoconductor layer formed on a generation layer, a transport layer, and the like to a thickness of 17 to 23 μm on a double-cut aluminum cylinder 105 with a wall thickness of 0.8+W. The front 7 flange 106 and the rear flange 107 on both end faces are made of a glass material, and especially the rear flange 107 is made of a conductive glass material with a resistance of 10 to 10 Ω (for example, Polyayatal E manufactured by Polyplastic Co., Ltd.).
S-5 or EB-10), and is grounded through this rear flange 107, fulfilling the function of a photoreceptor.

The cleaning device 18 also includes a light shield plate 1 covering the upper part of the cleaning device 18.
11, and is made by cleaning the toner remaining on the photoreceptor 10 after transfer, and is made of polyurethane rubber (55°
The cleaning blade 112 and the recovery blade 113 are arranged such that the ridgeline of the cleaning blade 112 has a contact angle with the tangent of the photoreceptor 10 of 1 to 5 degrees, The pressure is applied at a load of 0.8 to 1.0 17 mg to reduce damage to the surface of the photoreceptor 10. That is, the toner remaining on the photoconductor 10 is removed from the first support plate 114.
The scraped toner is completely scraped off by the cleaning blade 112 attached to the cleaning blade 112, and the scraped toner is attached to the lower second support plate 115 or is received by the cover grade 113 and then removed by the cleaning blade 112 shown in FIG. The toner is temporarily transported into the toner storage box 117 by the unloading auger 116, and the rudder sprocket 118 and the ladder chain 11
9. Rudder sprocket 120 and toner carrying auger 1
The photoreceptor 10 is introduced into the photoreceptor 10 via the photoreceptor 21 and housed therein.

Furthermore, the charge remaining on the photoreceptor 10 after cleaning is
As shown in FIG. 9, the static electricity is eliminated by light (static elimination light) L directly guided from the exposure device 12, and this static elimination action is achieved through the opening 63g of the lower reflector 63.
This is done by reflecting the static eliminating light guided by the reflecting part 63b and irradiating it onto the photoreceptor 10 through the light opening 111a opened in the light shield plate 11. As shown, an air exhaust port 111b is formed adjacent to the lighting port 111a,
The air inside the cartridge, in which a large amount of ozone and other products are generated due to negative charging, can be efficiently discharged to the outside, and each of these components is assembled to a frame 130 constituting the cartridge body. This frame 130 includes a rear frame 131, a front frame 132, a cleaner box 133, and an exposure ring).
The reinforcing frame 134 has a reinforcing frame 134a, the rear frame 1311d, and a pair of upper and lower bottle holes 135°135 for positioning the rear side of the charger 11. A pair of upper and lower bins 103 and 103 are fitted and positioned. Further, one side of the bottle 135 is not made of a conductor capable of conducting to the charging wire 101 of the charging charger 11, but is configured as a trap so that a high voltage is applied from the main body to a conductive elastic member (not shown). Furthermore, the charger 1
A pair of upper and lower positioning holes 104, 10 are provided on the front side of the
4 is formed, and the photoreceptor 1 is inserted into this hole 104.104.
A drum shaft flange 14 having a drum shaft 142 fitted to the front 7 flange 106 of the 0.0 and a bracket 136 which is inserted from the outside through the front frame 132 is fitted with a bin 137 that is integrated with the drum shaft flange 14 and the front frame 132. This is done by positioning. Also,
In this case, the rotational drive of the photoreceptor 10 is performed by coupling a power transmission member (not shown) provided on the rear flange 107 of the photoreceptor 10 with a power transmission member provided on the main body side, and furthermore, the auger 116 A coupling bin (not shown) is provided at the tip of the toner carry-in auger 121, and the driving force of
The toner storage box 117 is used as a handle when the cartridge main body is taken in and out of the apparatus main body 1. This is because the cartridge can be taken in and taken out along the formed guide member.

15 to 19 show a developing device 15 for visualizing the electrostatic latent image formed on the photoreceptor 10, in which a magnet row 2 rotatably supported by a support frame 151 is shown.
152, a doctor 153, a scraping plate 154, a stirring shaft 156 having stirring blades 155, etc., and a handle 157 is rotatably attached to the support frame 15, and both sides thereof to 2
Book guide bins 158 and 159 are provided protrudingly at the same position. As shown in FIG. 16, these bins 1511 and 159 have one bin 168 inserted into the guide groove 161 of the holding plate 160 fixed to the top frame on the main body side, and serve as a pivot point for the entire support frame 151. other bottle 1
59 is engaged with a retaining groove 162 recessed in one side of the holding plate 160 to position the gap between the holding plate 160 and the photoconductor 10. 15 is inserted into the dog frame of the main body, the bin 159 and the back side of the support frame 151 serve as a guide.

In the figure, reference numeral 163 is a toner replenishment roller, and a replenishment roller 16 made of sponge floor material is provided at the opening on the bottom side.
4, and this replenishment roller 164 is fixed to a rotating shaft 165 and supplies the developing powder in the hopper 163 into the main body, and is of a plug-in type with the main body. That is, this hole "-163 has a protrusion piece 166 formed on the front end face that is inserted into a hole 167 that opens on the front side of the device main body 15, and a claw portion 169 of a locking lever 168 provided on the rear side of the device body 15. The toner is fixed by being pushed into a hole 170 opened on the rear side of the main body 15, while a driving force is transmitted from the main body to a gear 171 fixed to the rotating shaft 165 of the replenishing roller 164. Replenishment is carried out.Also, the device main body 1
Rigs 174 and 175 are respectively formed on the top cover 172 and side cover 173 that make up the hopper 163, and these rips 174 and 175 form support guides when the hopper 163 is installed, and also serve as support guides when the hopper 163 is removed. By lifting the locking lever 168 upward, the claw portion 169 is removed from the hole 170 on the side of the apparatus main body 15, and the hopper 163 can be removed and replaced easily. When the hopper e-163 is removed, it is tilted inward around the rotating shaft 176 (in the direction of arrow H in Fig. 15) to seal the upper opening of the device main body 15 into which the hopper 163 is inserted. It is now possible to do so.

By the way, the internal pressure of the main body of the developing device 15 contains a developer which is a mixture of developer powder and a magnetic material (carrier).
By transmitting the driving force from the main body side to the gear 177, the stirring shaft 156 is rotated in the direction of the arrow Y in FIG. 15, and the outer sleeve of the magnet roller 152 is rotated in the direction of the arrow 2. Since a developing pole is arranged in 152 by using a fixed magnet and several types of transport poles are positioned facing the surface of the photoreceptor 10, the developer is attracted and adhered onto the magnetic negative roller 152. , the electrostatic latent image on the photoreceptor 10 can be developed at the position of the development pole after being made to a predetermined thickness by the doctor 153. After development, the developer is directed toward the direction of rotation of the sleeve of the magnet roller 152. Then, the particles are scraped off by the scraping plate 154 and deposited around the stirring shaft 156 again.

Further, as shown in FIG. 19, a developer concentration detection device 178 is incorporated in the scraping plate 154, and an electrical contact 179 of this detection device 178 is protruded from the front frame on the front side of the device main body 15. scraping board 154
It is provided at the lower part of the protruding portion 154IL, and is configured to be brought into contact with the illustrated electrode and connected to the main body circuit when stored in the main body, and this detection device 178 detects developer powder in the developer and A signal is output to control the developer powder concentration to a predetermined amount by detecting a change in the mixing ratio of magnetic powder, and this signal causes the replenishment roller 16 of the toner replenishment mechanism to be activated.
4 is rotationally driven to replenish developer powder.

In this way, the visible image formed on the photoreceptor 10 by the above-described development system is transferred to the transfer material P by the transfer charger 16.
As shown in FIG.
The transfer material is neutralized by a static eliminating member (for example, a zerostat) disposed in series with the transfer charger 16 and guided to the fixing device 17 .

As shown in FIGS. 20 to 23, this fixing device 17 can be separated into upper and lower units, and transfers the transfer material P on which the visible image has been transferred to the heat roller of the upper unit 182 via a guide 181. 183 and lower unit 18
It is sent to the fixing section between the breath roller 185 of No. 4,
It is designed to be fixed by heat of 190℃±20℃ and linear pressure of 400~1000υ cans, and both the upper and lower units are clamshell-shaped for easy maintenance, inspection, and paper jam removal. The locking mechanism 18 of the copying machine main body 1 is attached to the upper and lower frames of the copying machine main body 1 to be opened.
6 is installed, and the locking claw 186a of this locking mechanism 186
is engaged with a retaining hole 188 formed in the frame 187 of the lower unit 184 to lock both the upper and lower units as well as the main body of the copying machine.

The heat roller 183 attached to the frame 189 of the upper unit 182 is made of, for example, a straight I4 aluminum tube (φ23
) is coated with Teflon resin to prevent toner from adhering, and a halodan lamp (900
It has a structure in which a heater rung 190 consisting of a 900W halogen lamp 1 is inserted and arranged at both ends by a front electrode 192 and a rear electrode 193 attached to an insulating member 191.
In order to provide the heat roller 183 with the ability to reach 190° C. within 25 seconds with a lamp heat quantity of 90°C, it is effective to make the wall thickness of the heat roller 183 within 1.5 m, and the W of the lamp number and time to reach 190℃ (
T) and the wall thickness of the heat roller 183 are shown in FIG. (The case of Owa is shown respectively)
. Further, at the end of the heat roller 183, a heat insulating driving gear 194 made of polyphenylene sulfide and a sliding bearing 195 are provided.
is connected to a main body drive unit (not shown) and heat roller 183
In addition, it is attached to the frame 189 via the sliding bearing 195 with a heat insulating function. Furthermore, 196 in the figure is a thermistor,
It is supported by the frame 189 so as to be in constant contact with the heat roller 183 through a plate spring 197 with an optimum pressing force of 80 to 12011/an', and the surface temperature of the heat roller 183 is kept at 190°C ± 20°C. Turn on the heater lamp 190 so as to maintain the temperature.

By turning it off, it can be controlled more effectively.

Reference numeral 198 in the figure denotes a light shielding plate made of stainless steel material with a thickness of 0.1 m, which is elastically attached to both ends of the heater lamp 190, and is used to reduce light leakage when inspecting the heater lamp. , serves as a guide when attaching the heater lamp 190 when assembling the fixing unit to facilitate the assembly, and 199 in the figure is a temperature heater, which is attached to the frame 189 via the holder 2oθ,
The holder 200d is made of a heat-resistant resin such as polyphenylene sulfide, and the temperature fuse 199 is
is accurately positioned relative to the heat roller 183 to ensure stable operation of the temperature fuse 199. Further, in the figure, reference numeral 201 is a cleaning grade made of silicone rubber or the like, and is designed to remove the toner slightly adhered to the heat roller 183 after fixing.

On the other hand, the press roller 185 t/i, M'lk
The core metal is 8 m long, the wall thickness is 8 fins, and the hardness is 20" to 306 (J
IS-A scale) silicone rubber, the line connecting the center with the heat roller 183 is a vertical line') 71
By tilting the transfer material P by 0' to 12 degrees, the rear end of the transfer material P is prevented from jumping up, and is rotatably supported by the support member 202 via a bush 203.
The pressure spring 204 applies pressure to the front heat roller 183 through the support member 202 and contacts the heat roller 183.
83.

In the figure, 205 and 206 indicate the transfer material P to the paper discharge tray 7.
With respect to the common tangent passing through the contact point of the heat roller 183 and press roller 185, the line connecting the contact point of the heat roller 183 and press roller 185 and the contact point of the paper ejection roller 2o5°206 is The angle formed is o″~2
It is located at the bottom with an angle of 0', and depending on this angle, the transfer material, especially the curl of the paper, can be
011/m” paper) can be prevented from crossing (
In this case, if the angle is greater than 30", the
(There is a risk that thick paper, etc. larger than n" paper may curl downward.) The lower paper ejection roller 205 is formed by press-fitting a rubber roller 205b made of, for example, butadiene acrylonitrile rubber onto a stainless steel shaft 205a. The frame 187 is held at both ends via sliding bearings 207, and the ends of the support member 202 that supports the press roller 185 rest on the sliding bearings at both ends; As a result, the support member 202 is supported so as to be able to rotate about the shaft center of the lower paper ejection roller 205. A driving gear 20B is provided at the rear end of the lower paper ejection roller 205. This gear 20g meshes with a gear 209 provided at the end of the press roller 185 via an intermediate gear 210, and is designed to be driven as the press roller 1850 rotates. , the press roller 185 (7) is supported by a support rod 211 that rotates around the axis of the press roller 185, and has its free end also in contact with the axis of the lower paper ejection roller 205. Gear 209 and lower paper ejection roller 2
The distance between the centers of gears 208 and gears 208 of each gear group 208.
209 and 210 are always in good working order. At this time, the lower paper ejection roller 205 is moved from the press roller 185 driven by the heat roller I83 to the gear group 2.
08.209210, its circumferential speed depends on the thermal expansion of the press roller 185. Therefore, the roller diameter is determined by changing the circumference of the press roller 185 when the press roller 185 thermally expands during fixing. By setting the speed to be 2 inches higher than the speed, wrinkles etc. can be prevented and stable paper feeding performance can be obtained.

Furthermore, the upper paper ejection rollers 206 are provided with two rollers on each of the left and right sides. It has a configuration in which a roller made of rear acetal is integrally formed and attached to the upper frame 189, and its center portion is pressed and pressurized by a spring material 212, and the lower paper ejection roller 2
05, and a paper discharge detector 213 is installed near the contact point with the lower paper discharge roller 205.

Furthermore, 214 in the figure is a fixing section consisting of the heat roller 183 and press roller 185, and paper ejection rollers 205, 2.
A peeling claw made of heat-resistant resin such as polyphenylene sulfide is provided between the heat roller 183 and the heat roller 183 with an optimum force of IO to 20F, and is supported via a spring material 215. , is configured to also serve as a guide for the transfer material P.

That is, the heat roller 183 and the press roller 18
The transfer material P that has passed through the fixing section between 5 and 5 is prevented from being wrapped around the roller 183 by the peeling claw 214, and is sent between the paper ejection rollers 205 and 206. The transfer material P that has passed between the
The extension part 1891LK of the upper frame 189 of the fixing unit, which is installed on the common tangent line of 05.206 at an angle of 45 degrees or less with the tangent line, can be brought into contact with the extension part 1891LK to remove excess charge on the transfer material. The frame 189 is grounded, which makes it possible to easily eliminate static electricity after fixing the transfer material without using a separate static elimination means, and prevents curling of the transfer material after it is ejected. It is something that

By the way, the lower paper ejection roller 205 attached to the lower fixing unit 184 described above is supported by a cut-and-raised portion 1878 formed in the lower frame 187.
If this cut-and-raised portion 187a is provided with a margin of 5 m in each direction so that the lower discharge roller 205 can move freely, the support plate 202 that supports the press roller 185 can also be moved freely. The press roller 185 can move back and forth, and in this state, the pressure released when the upper fixing unit 182 of the copying machine main body I is closed causes a part of the upper frame 189 to press against the sliding bearing 207 of the lower paper ejection roller 205. lower sheet ejection roller 205 of the lower fixing unit 184
In order to position the lower paper ejection roller 205 and the upper paper ejection roller 206, the lower paper ejection roller 205 and the upper paper ejection roller 206 can always be maintained in parallel.
Similarly, the heat roller 183 and the press roller 185 are always in parallel contact to obtain an optimal contact state, so even if the fixing section is separated into vertical sections, stable paper feeding performance is always achieved. It is.

By the way, the photoreceptor 10, the charger 11, and the cleaning device (cleaner section) 18 shown in FIGS. 9 and 14 are assembled into the frame 130 and unitized in a cartridge type, as described above. As shown in FIG. 25, the toner storage box 117
The sleeve portion 1 is assembled to the outside of the front frame 132 with a grippable distance d therebetween.
17a faces the inside of the cleaner box 133, and the other sleeve part 117b faces the inside of the photoreceptor 10 to communicate between the cleaner box 133 and the photoreceptor 10. As shown in FIG. 26, the cleaner y3 ?
One end of the spiral conveyance auger 116 disposed in the dust cover 33 is exposed to the toner storage box 117 through the sleeve portion 117a, and residual development of the visible image on the cleaned photoreceptor 10 deposited in the cleaner box 133 is performed. The developer is introduced into the toner storage box 117 by the rotation of the conveyance auger 116, and the residual developer introduced into the toner storage box 117 is driven to rotate via the ladder sprocket 118, the ladder chain 119, and the ladder sprocket 120. The spiral conveyance auger 121 conveys the conveyance auger 121 to the photoreceptor 10 side, and this conveyance auger 121
As shown in FIG. 27, the drum shaft flange 141, which is inserted into the insertion hole 106a of the front 7 flange 106 on the end surface of the photoreceptor 10 and supports the photoreceptor 10, is carried into the inside of the photoreceptor 10 through the hollow drum shaft 142. It is designed so that it can be stored. In addition, the conveyance auger 116
The rotational driving force is applied to the gear 222 of the photoreceptor 10 which is rotationally driven by a driving gear 220 provided at the end of the rear shaft of the conveyance auger 116 meshing with a drive system on the apparatus main body (not shown) via an intermediate gear 221. By this, the drive of the mechanism for conveying/carrying the residual developer from the cleaner section to the photoconductor 10 is interlocked with the drive system on the main body side along with the drive of the photoconductor. It is what it is. Furthermore, the toner storage box 117 also serves as a handle of the unit together with a cover that forms a conveyance path for residual developer from the cleaner box 133 to the photoreceptor 10 side;
This makes it convenient to handle when loading and unloading cartridges.

Further, in the figure, reference numeral 223 denotes a sealing material, which is made of an elastic material such as urethane, and is designed to prevent residual developer stored inside the photoreceptor 10 from clogging the insertion hole 106a into which the shaft 142 is inserted. It has become.

It should be noted that the present invention is not limited to the above-mentioned embodiments. For example, the drum-shaped photoreceptor 10 is formed into an endless belt shape as shown in FIG.
0, and the residual developer in the cleaner box 133 may be stored in the toner storage section 230 by a toner storage box 117 equipped with a transport/carry-in mechanism. Further, as another mechanism for conveying and transporting the residual developer from the cleaner box 133 to the photoreceptor 10, a driving force transmission means consisting of a ladder rocket 118, a ladder chain 119, and a ladder rocket 120 is shown in FIG. As shown, an endless belt-like elastic body (for example, phosphor bronze with a thickness of 0.5 wg or mylar with a thickness of 200μ) 240 is placed between the shafts of -116 and 121 on the guide plate 2.
41 may be configured by passing the hook.

In addition, it goes without saying that the present invention can be modified in various ways without departing from the gist of the invention.

〔Effect of the invention〕

As explained above, the present invention transfers a developer image formed on an image carrier onto an image support, and cleans the residue of the developer image remaining on the image carrier after transfer. In an image forming apparatus equipped with a cleaning device formed by a cleaning device, the residue of a cleaned developer image is conveyed and carried into an image bearing member and stored therein, so compared to conventional devices, , dead space The inside of the image carrier that has been tarred can be effectively used as a storage space for waste residue.
Furthermore, when replacing the image carrier, cleaner section, and other parts as a unit, the residual material conveyance/carrying mechanism section can be used as a handle, making it easy to handle and reducing the size of the unit section and the entire device. It has excellent effects such as being able to

[Brief explanation of drawings]

FIG. 1 is a schematic explanatory diagram of the internal structure of an image forming apparatus according to an embodiment of the present invention, FIG. 2 is an explanatory diagram showing the same in an open state, and FIGS. 3 to 6 are illustrations of transfer material feeding. FIGS. 7 and 8 are schematic explanatory diagrams showing the drive mechanism of the document table; FIGS. 9 to 11 are schematic explanatory diagrams showing the exposure mechanism; FIGS. FIG. 13 is a schematic explanatory diagram showing the drive mechanism of the static eliminating shutter in the static eliminating device, FIG. 14 is a schematic explanatory diagram showing an exploded view of the charging mechanism and cleaning mechanism around the image bearing member (photoreceptor), and FIG. FIG. 19 is a schematic explanatory diagram of the developing mechanism, FIGS. 20 to 23 are schematic explanatory diagrams of the fixing mechanism, and FIG. 24 is the relationship between the thickness of the heat roller of the fixing mechanism, the wattage of the heater runzo, and the heating time. FIGS. 25 to 27 are schematic explanatory views showing a mechanism for transporting and storing the residue of the developer image (residual developer) inside the image carrier after cleaning by the cleaning device;
FIG. 8 is a schematic explanatory diagram showing another embodiment of the image carrier according to the present invention, and FIG. 29 is a schematic explanatory diagram showing another embodiment of the developer image residue conveying/carrying mechanism according to the present invention. Explanatory diagram, No. 30
3 and 31 are schematic explanatory diagrams showing two examples of conventional cleaning devices. DESCRIPTION OF SYMBOLS 1... Copying machine body, 9... Transfer device, 10... Image carrier, 11... Charger, 12... Exposure device, 15°° development device, 16 transfer charger, 18
...Cleaning device, P...Transfer material, 105...Cylinder body,
106a...Insertion hole, 112...Cleaning blade, 116...Toner carry-out auger, 117...Toner storage box, 121...Toner carry-in auger, 133...
...Cleaner? Tsukusu・Patent Attorney Patent Attorney Takeshi Suzue Figure 15 Figure 16 Figure 27 Figure 28 Figure 29

Claims (4)

[Claims] (1) In an image forming apparatus equipped with means for transferring a developer image formed on an image carrier onto an image support and cleaning the residue of the developer image remaining on the image carrier after transfer. 2. An image forming apparatus, further comprising means for transporting and storing the residue of the cleaned developer image inside the image carrier. (2) The image forming apparatus according to claim 1, wherein the residue of the developer image is conveyed into the image carrier using an auger. (3) The image forming apparatus according to claim 1 or 2, wherein the image carrier is formed in a cylindrical shape. (4) The image forming apparatus according to claim 1 or 2, wherein the image carrier is formed in the shape of an endless belt.