JPS61251860A - Organic electrophotographic sensitive body and its manufacture - Google Patents

Organic electrophotographic sensitive body and its manufacture

Info

Publication number
JPS61251860A
JPS61251860A JP9423085A JP9423085A JPS61251860A JP S61251860 A JPS61251860 A JP S61251860A JP 9423085 A JP9423085 A JP 9423085A JP 9423085 A JP9423085 A JP 9423085A JP S61251860 A JPS61251860 A JP S61251860A
Authority
JP
Japan
Prior art keywords
titanium oxide
hydrophobic titanium
fine powder
organic photoreceptor
parts
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP9423085A
Other languages
Japanese (ja)
Inventor
Susumu Nakazawa
中沢　享
Masahiro Tsutsumi
真洋 堤
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Kyocera Mita Industrial Co Ltd
Original Assignee
Mita Industrial Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Mita Industrial Co Ltd filed Critical Mita Industrial Co Ltd
Priority to JP9423085A priority Critical patent/JPS61251860A/en
Publication of JPS61251860A publication Critical patent/JPS61251860A/en
Pending legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G5/00—Recording members for original recording by exposure, e.g. to light, to heat, to electrons; Manufacture thereof; Selection of materials therefor
    • G03G5/02—Charge-receiving layers
    • G03G5/04—Photoconductive layers; Charge-generation layers or charge-transporting layers; Additives therefor; Binders therefor
    • G03G5/05—Organic bonding materials; Methods for coating a substrate with a photoconductive layer; Inert supplements for use in photoconductive layers
    • G03G5/0503—Inert supplements
    • G03G5/0507—Inorganic compounds

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  • Chemical & Material Sciences (AREA)
  • Inorganic Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Photoreceptors In Electrophotography (AREA)

Abstract

PURPOSE:To enhance strength of a photosensitive layer by adding a fine powder of hydrophobic acidic TiO2 to an org. type electrophotographic photosensitive solution. CONSTITUTION:The photosensitive layer is composed essentially of an electrostat ic charge transfer medium and a charge generating pigment and further, it contains as a reinforcing material, the hydrophobic acidic ceramic TiO2 fine powder excellent in mechanical strength in an amt. of 1-30pts.wt. per 100pts.wt. of said medium, and if below the lower limit, satisfactory mechanical strength cannot be obtained, and if over the upper limit, the TiO2 cannot be uniformly dispersed into the photosensitive soln. and the fine particles agglomerates with each other. These fine particles are regulated to <=1mum in diameter, and if over the limit, the particles agglomerate with each other and are liable to form pinholes.

Description

【発明の詳細な説明】 （産業上の利用分野） 本発明は、電子写真用有機感光体、特に、　　成約強度
に優れた電子写真用有機感光体およびその製造方法に関
する。DETAILED DESCRIPTION OF THE INVENTION (Industrial Application Field) The present invention relates to an electrophotographic organic photoreceptor, and particularly to an electrophotographic organic photoreceptor with excellent contract strength and a method for producing the same.

（従来の技術） 鮮明な電子写真を得るためには、電子写真用感光体は均
一に帯電されねばならない。そのためには感光層が導電
性基体表面に平滑でかつ均等厚に形成されていることが
必須の要件である。感光層の形成にあたり無機・有機の
各種の感光材料が知られている。無機系の感光材料を感
光層として用いることはもちろん可能であるが、無機系
の感光材料は表面が硬く耐久性に富むため大型の高速機
に適してはいるが高価であり、また１人体にも有害であ
る。それゆえ、最近の複写機、特に、低速機には、有機
系の感光材料を用いる傾向がある。(Prior Art) In order to obtain clear electrophotography, an electrophotographic photoreceptor must be uniformly charged. For this purpose, it is essential that the photosensitive layer be formed on the surface of the conductive substrate to be smooth and to have a uniform thickness. Various inorganic and organic photosensitive materials are known for forming photosensitive layers. It is of course possible to use inorganic photosensitive materials as the photosensitive layer, but inorganic photosensitive materials have hard surfaces and are highly durable, making them suitable for large, high-speed machines, but they are expensive, and they are difficult to apply to the human body. is also harmful. Therefore, modern copying machines, especially low-speed machines, tend to use organic light-sensitive materials.

有機系の感光材料を用いた感光層は無機系の感光層に比
較して機械的強度に乏しい。そのため。A photosensitive layer using an organic photosensitive material has poor mechanical strength compared to an inorganic photosensitive layer. Therefore.

複写プロセス中のクリーニング工程において、感光層が
削られるなどの現象が生じ、これが主帯電工程における
感光層の表面電位の低下の原因となっている。感光層の
表面電位が低下すると鮮明な電子写真が得られない。In the cleaning process during the copying process, phenomena such as the photosensitive layer being scraped occur, which causes a decrease in the surface potential of the photosensitive layer during the main charging process. If the surface potential of the photosensitive layer decreases, clear electrophotography cannot be obtained.

（発明が解決しようとする問題点） 本発明は上記従来の問題点を解決するものであり、その
目的とするところは２機械的強度に優れた感光層を形成
しうる電子写真用有機感光体を提供することにある。本
発明の他の目的は１組成物が均一に分散された電子写真
用有機感光体を提供することにある。本発明のさらに他
の目的は、上記有機感光体の製造方法を提供することに
ある。(Problems to be Solved by the Invention) The present invention solves the above-mentioned conventional problems, and aims to provide an organic photoreceptor for electrophotography that can form a photosensitive layer with excellent mechanical strength. Our goal is to provide the following. Another object of the present invention is to provide an organic photoreceptor for electrophotography in which a composition is uniformly dispersed. Still another object of the present invention is to provide a method for manufacturing the above-mentioned organic photoreceptor.

（問題点を解決するための手段） 本発明は、有機系の電子写真用感光液に疎水性酸化チタ
ン微粉末を添加することにより、感光層の強度が向上し
ろるとの発明者の知見にもとづいて完成された。(Means for Solving the Problems) The present invention is based on the inventor's knowledge that the strength of the photosensitive layer can be improved by adding hydrophobic titanium oxide fine powder to an organic electrophotographic photosensitive liquid. It was originally completed.

本発明の電子写真用有機感光体は、電荷輸送媒質および
電荷発生顔料を主体とし、さらに、疎水性酸化チタン微
粉末を補強剤として含有し、そのことにより上記目的が
達成される。本発明の電子写真用有機感光体の製造方法
は、疎水性酸化チタンを溶媒に分散し粉砕して疎水性酸
化チタン微粉末の分散液を得る工程および該分散液を感
光液に添加する工程を包含し、そのことにより上記目的
が達成される。The organic photoreceptor for electrophotography of the present invention mainly contains a charge transport medium and a charge generating pigment, and further contains hydrophobic titanium oxide fine powder as a reinforcing agent, thereby achieving the above object. The method for producing an electrophotographic organic photoreceptor of the present invention includes the steps of dispersing hydrophobic titanium oxide in a solvent and pulverizing it to obtain a dispersion of hydrophobic titanium oxide fine powder, and adding the dispersion to a photosensitive liquid. and thereby the above object is achieved.

疎水性酸化チタン微粉末は、セラミック材料であり９機
械的強度に優れており９本発明ではこの酸化チタン微粉
末は補強剤として用いられている。Hydrophobic titanium oxide fine powder is a ceramic material and has excellent mechanical strength9, and in the present invention, this titanium oxide fine powder is used as a reinforcing agent.

疎水性酸化チタン微粉末は、電荷輸送媒質１００重量部
に対し１重量部から３０重量部の範囲で感光体中に含有
される。疎水性酸化チタン微粉末が上記範囲を下まわる
と、得られた感光体が満足すべき機械的強度を有しない
。疎水性酸化チタン微粉末が上記範囲を上まわると、酸
化チタン微粉末が感光液中に均一に分散されず、微粉末
粒子同士が凝集を起こす。疎水性酸化チタン微粉末の粒
子径は。The hydrophobic titanium oxide fine powder is contained in the photoreceptor in an amount of 1 to 30 parts by weight based on 100 parts by weight of the charge transport medium. If the hydrophobic titanium oxide fine powder is below the above range, the resulting photoreceptor will not have satisfactory mechanical strength. If the hydrophobic titanium oxide fine powder exceeds the above range, the titanium oxide fine powder will not be uniformly dispersed in the photosensitive liquid, and the fine powder particles will aggregate with each other. What is the particle size of hydrophobic titanium oxide fine powder?

製造工程において１μｍ以下に調整される。この範囲を
越えて極端に太き（なると、後述のように粒子同士が凝
集し最終的に得られる感光層中の強度にバラツキが生じ
るとともにピンホールの原因ともなる。The thickness is adjusted to 1 μm or less during the manufacturing process. If the thickness exceeds this range and becomes extremely thick (as will be described later), the particles will agglomerate with each other, causing variations in the strength of the final photosensitive layer and also causing pinholes.

電荷輸送媒質としては、ポリビニルカルバゾールのよう
な電荷輸送性樹脂を単独もしくは他のそれ自体光導電性
を有しない樹脂９例えば、ポリエステル樹脂、エポキシ
樹脂、ポリカーボネート樹脂、アクリル樹脂などと組み
合わせたものや、ヒドラゾン系誘導体、ピラゾリン系誘
導体等の低分子電荷輸送媒質を樹脂中に分散させたもの
が使用される。電荷発生顔料としては、ペリレン系顔料
。As the charge transport medium, a charge transport resin such as polyvinyl carbazole may be used alone or in combination with other resins that do not themselves have photoconductivity9, such as polyester resin, epoxy resin, polycarbonate resin, acrylic resin, etc. A resin in which a low-molecular charge transport medium such as a hydrazone derivative or a pyrazoline derivative is dispersed is used. Perylene pigments are used as charge-generating pigments.

キナクリドン系顔料、とラントロン系顔料、フタロシア
ニン系顔料、ジスアゾ系顔料、トリスアゾ系顔料等の光
導電性有機顔料が使用される。Photoconductive organic pigments such as quinacridone pigments, lanthrone pigments, phthalocyanine pigments, disazo pigments, and trisazo pigments are used.

本発明の電子写真用有機感光体は２次のように製造され
る： 酸化チタン粉末は２表面処理により、親水性酸化チタン
と疎水性酸化チタンとに分けられる。親水性酸化チタン
は溶媒に対する分散性が悪いため。The organic photoreceptor for electrophotography of the present invention is manufactured as follows: Titanium oxide powder is divided into hydrophilic titanium oxide and hydrophobic titanium oxide by two surface treatments. Hydrophilic titanium oxide has poor dispersibility in solvents.

本発明では疎水性酸化チタンが用いられる。Hydrophobic titanium oxide is used in the present invention.

疎水性酸化チタンを９通常の超音波分散法、ホモミキサ
ー法などで分散すれば９分散後に樹脂中で再凝集をおこ
し１粒子径１０μｍ以上の疎水性酸化チタンが発生する
。粒子径１０μｍ以上の疎水性酸化チタンは、後工程で
形成される感光層中において、ピンホール発生の原因と
なる。したがって。If hydrophobic titanium oxide is dispersed by a conventional ultrasonic dispersion method, homomixer method, etc., reagglomeration occurs in the resin after dispersion, and hydrophobic titanium oxide with a particle size of 10 μm or more is generated. Hydrophobic titanium oxide with a particle size of 10 μm or more causes pinholes in the photosensitive layer formed in a subsequent process. therefore.

この酸化チタンを溶媒に分散し、セラミック製ボールミ
ルを用いて粉砕して疎水性酸化チタン微粉末にする必要
がある。It is necessary to disperse this titanium oxide in a solvent and grind it using a ceramic ball mill to obtain a hydrophobic titanium oxide fine powder.

疎水性酸化チタンを溶媒に分散し、セラミック製ボール
ミルを用いて２４時間から４８時間粉砕することにより
９通常、１μｍ以下の疎水性酸化チタン微粉末が得られ
る。By dispersing hydrophobic titanium oxide in a solvent and pulverizing it for 24 to 48 hours using a ceramic ball mill, a hydrophobic titanium oxide fine powder of 1 μm or less can usually be obtained.

疎水性酸化チタンの分散に用いられる溶媒には。For the solvent used for dispersing hydrophobic titanium oxide.

例えば、テトラヒドロフラン、シクロヘキサンがある。Examples include tetrahydrofuran and cyclohexane.

疎水性酸化チタンは、上記溶媒１００重量部に対し、５
重量部から５０重量部の範囲で用いられる。疎水性酸化
チタンが上記範囲を下まわると。Hydrophobic titanium oxide was added in an amount of 5 parts by weight per 100 parts by weight of the above solvent.
It is used in a range of 50 parts by weight. When the hydrophobic titanium oxide is below the above range.

酸化チタンの分散および粉砕が効果的になされない。疎
水性酸化チタンが上記範囲を上まわると。Titanium oxide is not effectively dispersed and crushed. When the hydrophobic titanium oxide exceeds the above range.

分散した酸化チタンが再凝集を起こす。Dispersed titanium oxide causes reagglomeration.

ボールミルを用いた粉砕により、疎水性酸化チタン微粉
末の粒子径は１μｍ以下に調整される。The particle size of the hydrophobic titanium oxide fine powder is adjusted to 1 μm or less by pulverization using a ball mill.

粒子径が１μｍ以上になると粒子同士の凝集が起こり、
後工程で形成される感光層の強度にバラツキが生じる。When the particle size becomes 1 μm or more, agglomeration of particles occurs,
Variations occur in the strength of the photosensitive layer formed in the post-process.

粉砕により得られた疎水性酸化チタン微粉末は感光液に
添加される。この感光液は、電荷輸送媒質と電荷発生顔
料を主体としている。感光液に用いられる溶媒は、前記
疎水性酸化チタン分散用溶媒と同一であれば好ましく２
例えば、テトラヒドロフラン、シクロヘキサンがある。The hydrophobic titanium oxide fine powder obtained by pulverization is added to the photosensitive solution. This photosensitive liquid mainly contains a charge transport medium and a charge generating pigment. The solvent used in the photosensitive liquid is preferably the same as the solvent for dispersing hydrophobic titanium oxide.
Examples include tetrahydrofuran and cyclohexane.

この感光液に疎水性酸化チタン微粉末を補強剤として添
加することにより９本発明の電子写真用有機感光体が得
られる。By adding hydrophobic titanium oxide fine powder as a reinforcing agent to this photosensitive solution, the organic photoreceptor for electrophotography of the present invention can be obtained.

このようにして得られた電子写真用有機感光体。The organic photoreceptor for electrophotography thus obtained.

は、導電性基体上に一定の厚みの感光層として塗布され
、電子写真用感光体の形で使用される。is coated as a photosensitive layer of a certain thickness on a conductive substrate and used in the form of an electrophotographic photoreceptor.

（実施例） 以下に本発明を実施例について述べる。(Example) The present invention will be described below with reference to examples.

疎水性酸化チタン３０重量部をテトラヒドロフラン１０
０重量部に分散させた。次に、アルミナ製ミルポット（
内径８・口、内容積４００ｎｊ２）へアルミナボールを
見掛は容積で２００ｎＩｌ入れ、さらに上記の分散液を
１００ｍ７！入れて疎水性酸化チタンの粉砕を行った。30 parts by weight of hydrophobic titanium oxide and 10 parts by weight of tetrahydrofuran
It was dispersed in 0 parts by weight. Next, alumina mill pot (
Put an alumina ball with an apparent volume of 200 nIl into a hole with an inner diameter of 8 mm and an inner volume of 400 nJ2, and then add 100 m7 of the above dispersion! The hydrophobic titanium oxide was crushed.

粉砕は回転数７Ｏｒｐｍで、２４時間行い、疎水性酸化
チタン微粉末の分散液を得た。The pulverization was carried out at a rotational speed of 7 rpm for 24 hours to obtain a dispersion of hydrophobic titanium oxide fine powder.

Ｎ、Ｎ’−ジ（３・５−ジメチルフェニル）ペリレン−
３・４・９・１０−テトラカルボン酸ジイミド　　　　
　　　　　　　　　　　８重量部ポリ−Ｎ−ビニルカル
バゾール　１００重ｉｔ部ポリエステル樹脂　　　　　
　　　１０重量部テトラヒドロフラン　　　　　　２０
０重量部上記処方を混合した。次に、アルミナ製ミルポ
ット（内径３ｃｍ、内容積４００ｍ１）へアルミナボー
ルを見掛は容積で２００ｍ１入れ、さらに上記の混合液
を１００ｍｊ！入れて分散を行った。分散は回転数７Ｏ
ｒｐｍで１２時間行い、これに前記疎水性酸化チタン分
散液を５０ｍＡ添加して、さらに１２時間分散した。こ
のようにして、疎水性酸化チタン微粉末を補強剤として
含む有機感光体を得た。N,N'-di(3,5-dimethylphenyl)perylene-
3,4,9,10-tetracarboxylic acid diimide
8 parts by weight Poly-N-vinylcarbazole 100 parts by weight Polyester resin
10 parts by weight Tetrahydrofuran 20
0 parts by weight of the above formulation was mixed. Next, put the alumina ball into an alumina mill pot (inner diameter 3 cm, internal volume 400 m1) with an apparent volume of 200 m1, and then add 100 mj of the above mixed solution! and dispersed it. Dispersion is at rotational speed 7O
rpm for 12 hours, and the above hydrophobic titanium oxide dispersion was added at 50 mA and further dispersed for 12 hours. In this way, an organic photoreceptor containing hydrophobic titanium oxide fine powder as a reinforcing agent was obtained.

上記感光体をそれぞれ厚さ８０μＩのアルミニウム板上
に乾燥後の厚さが１４μｍになるようにワイヤーバーに
て塗布し、１００℃で１時間の乾燥を行い、感光板を得
た。Each of the above photoreceptors was coated onto an aluminum plate having a thickness of 80 μI using a wire bar so that the thickness after drying would be 14 μm, and dried at 100° C. for 1 hour to obtain a photosensitive plate.

この感光板のエージング回数と表面電位との関係を図に
示す。The relationship between the number of aging times and the surface potential of this photosensitive plate is shown in the figure.

比較■ 疎水性酸化チタン微粉末を用いなかったこと以外は、す
べて実施例と同様にして感光板を作製した。Comparison (2) A photosensitive plate was prepared in the same manner as in Example except that the hydrophobic titanium oxide fine powder was not used.

この感光液のエージング回数と表面電位との関係を図に
示す。The relationship between the number of aging times of this photosensitive liquid and the surface potential is shown in the figure.

図から明らかなように１本発明の感光体は、従来の有機
感光体に比べて、長期間にわたる使用によっても表面電
位の低下がみられない。これは本発明の感光体が機械的
強度に優れていることを示している。As is clear from the figure, the photoreceptor of the present invention shows no decrease in surface potential even after long-term use than conventional organic photoreceptors. This shows that the photoreceptor of the present invention has excellent mechanical strength.

（発明の効果） 本発明によれば、このように電子写真用有機感光体が機
械的強度の優れた感光層を形成し、そのために、複写プ
ロセス中のクリーニング工程において感光層の摩耗が極
小化される。その結果、感光層の表面電位の低下がなく
、鮮明な電子写真が得られる。(Effects of the Invention) According to the present invention, the organic photoreceptor for electrophotography forms a photosensitive layer with excellent mechanical strength, so that wear of the photosensitive layer is minimized in the cleaning step during the copying process. be done. As a result, there is no decrease in the surface potential of the photosensitive layer, and clear electrophotographs can be obtained.

４、　　　　の　　゛な量 図は本発明の実施例および比較例におけるエージング回
数と表面電位との関係を示す図である。4. The quantitative graph shown in FIG. 4 is a graph showing the relationship between the number of aging times and the surface potential in Examples and Comparative Examples of the present invention.

以上that's all

Claims (1)

【特許請求の範囲】 １、電荷輸送媒質および電荷発生顔料を主体とする電子
写真用有機感光体であつて、さらに、疎水性酸化チタン
微粉末を補強剤として含有する電子写真用有機感光体。 ２、前記電荷輸送媒質１００重量部に対し、前記疎水性
酸化チタン微粉末を１重量部から３０重量部含有する特
許請求の範囲第１項に記載の電子写真用有機感光体。 ３、前記疎水性酸化チタン微粉末の粒子径が１μｍ以下
である特許請求の範囲第１項に記載の電子写真用有機感
光体。 ４、疎水性酸化チタンを溶媒に分散し粉砕して疎水性酸
化チタン微粉末の分散液を得る工程および該分散液を感
光液に添加する工程を包含する電子写真用有機感光体の
製造方法。 ５、前記疎水性酸化チタン分散用溶媒が、前記感光液用
溶媒と同一である特許請求の範囲第４項に記載の電子写
真用有機感光体の製造方法。 ６、前記疎水性酸化チタン分散用溶媒１００重量部に対
し、疎水性酸化チタンを５重量部から５０重量部分散さ
せてなる特許請求の範囲第４項に記載の電子写真用有機
感光体の製造方法。 ７、前記分散液中の疎水性酸化チタンがセラミック製ボ
ールミルを用いて粉砕される特許請求の範囲第４項に記
載の電子写真用有機感光体の製造方法。 ８、前記感光液が電荷輸送媒質および電荷発生顔料を含
有し、該電荷輸送媒質１００重量部に対し、前記疎水性
酸化チタン微粉末を１重量部から３０重量部含有する特
許請求の範囲第４項に記載の電子写真用有機感光体の製
造方法。 ９、前記疎水性酸化チタン微粉末が１μｍ以下の粒子径
を有する特許請求の範囲第４項に記載の電子写真用有機
感光体の製造方法。[Scope of Claims] 1. An organic photoreceptor for electrophotography, which mainly contains a charge transport medium and a charge-generating pigment, and further contains fine hydrophobic titanium oxide powder as a reinforcing agent. 2. The organic photoreceptor for electrophotography according to claim 1, wherein the hydrophobic titanium oxide fine powder is contained in an amount of 1 to 30 parts by weight based on 100 parts by weight of the charge transport medium. 3. The organic photoreceptor for electrophotography according to claim 1, wherein the hydrophobic titanium oxide fine powder has a particle size of 1 μm or less. 4. A method for producing an organic photoreceptor for electrophotography, which includes the steps of dispersing hydrophobic titanium oxide in a solvent and pulverizing it to obtain a dispersion of hydrophobic titanium oxide fine powder, and adding the dispersion to a photosensitive liquid. 5. The method for producing an electrophotographic organic photoreceptor according to claim 4, wherein the hydrophobic titanium oxide dispersion solvent is the same as the photosensitive liquid solvent. 6. Production of an organic photoreceptor for electrophotography according to claim 4, wherein 5 to 50 parts by weight of hydrophobic titanium oxide is dispersed in 100 parts by weight of the solvent for dispersing hydrophobic titanium oxide. Method. 7. The method for producing an electrophotographic organic photoreceptor according to claim 4, wherein the hydrophobic titanium oxide in the dispersion is pulverized using a ceramic ball mill. 8. Claim 4, wherein the photosensitive liquid contains a charge transport medium and a charge generating pigment, and the hydrophobic titanium oxide fine powder is contained in 1 to 30 parts by weight based on 100 parts by weight of the charge transport medium. A method for producing an electrophotographic organic photoreceptor as described in 2. 9. The method for manufacturing an organic photoreceptor for electrophotography according to claim 4, wherein the hydrophobic titanium oxide fine powder has a particle size of 1 μm or less.
JP9423085A 1985-04-30 1985-04-30 Organic electrophotographic sensitive body and its manufacture Pending JPS61251860A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9423085A JPS61251860A (en) 1985-04-30 1985-04-30 Organic electrophotographic sensitive body and its manufacture

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9423085A JPS61251860A (en) 1985-04-30 1985-04-30 Organic electrophotographic sensitive body and its manufacture

Publications (1)

Publication Number Publication Date
JPS61251860A true JPS61251860A (en) 1986-11-08

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
JP9423085A Pending JPS61251860A (en) 1985-04-30 1985-04-30 Organic electrophotographic sensitive body and its manufacture

Country Status (1)

Country Link
JP (1) JPS61251860A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0267575A (en) * 1988-09-02 1990-03-07 Canon Inc Contact electrifier
US5244760A (en) * 1992-01-02 1993-09-14 Xerox Corporation High sensitivity electrophotographic imaging members
US7060404B2 (en) 2001-05-01 2006-06-13 Ricoh Company, Ltd. Electrophotographic photoreceptor, method for manufacturing the electrophotographic photoreceptor and image forming apparatus using the electrophotographic photoreceptor

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0267575A (en) * 1988-09-02 1990-03-07 Canon Inc Contact electrifier
US5244760A (en) * 1992-01-02 1993-09-14 Xerox Corporation High sensitivity electrophotographic imaging members
GB2262995B (en) * 1992-01-02 1995-12-13 Xerox Corp Electrophotographic imaging members
US7060404B2 (en) 2001-05-01 2006-06-13 Ricoh Company, Ltd. Electrophotographic photoreceptor, method for manufacturing the electrophotographic photoreceptor and image forming apparatus using the electrophotographic photoreceptor
US7127196B2 (en) 2001-05-01 2006-10-24 Ricoh Company, Ltd. Electrophotographic photoreceptor, method for manufacturing the electrophotographic photoreceptor and image forming apparatus using the electrophotographic photoreceptor

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