JPH04184346A - Organic electrophotographic sensitive body - Google Patents
Organic electrophotographic sensitive bodyInfo
- Publication number
- JPH04184346A JPH04184346A JP31365290A JP31365290A JPH04184346A JP H04184346 A JPH04184346 A JP H04184346A JP 31365290 A JP31365290 A JP 31365290A JP 31365290 A JP31365290 A JP 31365290A JP H04184346 A JPH04184346 A JP H04184346A
- Authority
- JP
- Japan
- Prior art keywords
- layer
- resin
- undercoat layer
- undercoating layer
- conductive fine
- 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
Links
- 229920005989 resin Polymers 0.000 claims abstract description 17
- 239000011347 resin Substances 0.000 claims abstract description 17
- 239000000463 material Substances 0.000 claims abstract description 7
- 239000000758 substrate Substances 0.000 claims description 27
- 108091008695 photoreceptors Proteins 0.000 claims description 16
- 239000000126 substance Substances 0.000 claims description 9
- 239000000843 powder Substances 0.000 abstract description 12
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical group OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 abstract description 10
- 239000011230 binding agent Substances 0.000 abstract description 7
- 238000009499 grossing Methods 0.000 abstract description 6
- 230000007547 defect Effects 0.000 abstract description 4
- 239000004372 Polyvinyl alcohol Substances 0.000 abstract description 3
- 229920000609 methyl cellulose Polymers 0.000 abstract description 3
- 239000001923 methylcellulose Substances 0.000 abstract description 3
- 229920002451 polyvinyl alcohol Polymers 0.000 abstract description 3
- 239000002904 solvent Substances 0.000 abstract description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 abstract 2
- 125000000217 alkyl group Chemical group 0.000 abstract 1
- 230000015572 biosynthetic process Effects 0.000 abstract 1
- 229910052681 coesite Inorganic materials 0.000 abstract 1
- 229910052906 cristobalite Inorganic materials 0.000 abstract 1
- 239000003822 epoxy resin Substances 0.000 abstract 1
- 239000010419 fine particle Substances 0.000 abstract 1
- 235000010981 methylcellulose Nutrition 0.000 abstract 1
- 229920000647 polyepoxide Polymers 0.000 abstract 1
- 239000000377 silicon dioxide Substances 0.000 abstract 1
- 235000012239 silicon dioxide Nutrition 0.000 abstract 1
- 229910052682 stishovite Inorganic materials 0.000 abstract 1
- 229910052905 tridymite Inorganic materials 0.000 abstract 1
- 239000010410 layer Substances 0.000 description 60
- YMWUJEATGCHHMB-UHFFFAOYSA-N Dichloromethane Chemical compound ClCCl YMWUJEATGCHHMB-UHFFFAOYSA-N 0.000 description 6
- 238000000034 method Methods 0.000 description 6
- 239000000969 carrier Substances 0.000 description 5
- 239000011248 coating agent Substances 0.000 description 4
- 238000000576 coating method Methods 0.000 description 4
- 229920006122 polyamide resin Polymers 0.000 description 4
- 238000009825 accumulation Methods 0.000 description 3
- -1 ceratin Polymers 0.000 description 3
- 239000006185 dispersion Substances 0.000 description 3
- 239000007924 injection Substances 0.000 description 3
- 238000002347 injection Methods 0.000 description 3
- 230000014759 maintenance of location Effects 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- 239000004952 Polyamide Substances 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 229920002647 polyamide Polymers 0.000 description 2
- 239000004576 sand Substances 0.000 description 2
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 229920000180 alkyd Polymers 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 239000013256 coordination polymer Substances 0.000 description 1
- 238000007598 dipping method Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 229920001568 phenolic resin Polymers 0.000 description 1
- 239000005011 phenolic resin Substances 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
- 229920005668 polycarbonate resin Polymers 0.000 description 1
- 239000004431 polycarbonate resin Substances 0.000 description 1
- 229920001225 polyester resin Polymers 0.000 description 1
- 239000004645 polyester resin Substances 0.000 description 1
- 229920002635 polyurethane Polymers 0.000 description 1
- 239000004814 polyurethane Substances 0.000 description 1
- 229920005749 polyurethane resin Polymers 0.000 description 1
- 239000011241 protective layer Substances 0.000 description 1
- 229920002050 silicone resin Polymers 0.000 description 1
- 230000000391 smoking effect Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 230000003746 surface roughness Effects 0.000 description 1
- 229920001187 thermosetting polymer Polymers 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Photoreceptors In Electrophotography (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
この発明は、導電性基体と有機感光材料を含んでなる感
光層との間にアンダーコート層を備えてなる有機電子写
真感光体に関する。DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to an organic electrophotographic photoreceptor comprising an undercoat layer between a conductive substrate and a photosensitive layer containing an organic photosensitive material.
有機電子写真感光体は、通常、導電性基体上に有機感光
材料、樹脂バインダーなどを溶剤に分散・溶解した塗布
液を塗布して感光層を形成することにより作製されるが
、その際、塗膜である感光層の塗工性向上、基体上の欠
陥の感光層への悪影響防止、感光層の電気的特性改善を
目的として、基体と感光層との間にアンダーコート層を
設けることが行われている。Organic electrophotographic photoreceptors are usually produced by coating a conductive substrate with a coating solution in which an organic photosensitive material, a resin binder, etc. are dispersed and dissolved in a solvent to form a photosensitive layer. An undercoat layer is provided between the substrate and the photosensitive layer for the purpose of improving the coating properties of the photosensitive layer, which is a film, preventing defects on the substrate from adversely affecting the photosensitive layer, and improving the electrical characteristics of the photosensitive layer. It is being said.
導電性基体の表面は、良好な画像を得るため、表面研磨
1表面切削などの平滑化加工が施されており、通常は表
面粗さが中心線平均粗さで0.5μm以下になるように
仕上げられる。In order to obtain a good image, the surface of the conductive substrate is smoothed by surface polishing 1, surface cutting, etc., and the surface roughness is usually 0.5 μm or less in terms of center line average roughness. It will be finished.
上述のような平滑化加工を均一に行うには高度の技術を
要する。そのために、有機電子写真感光体を製造する上
で、基体の平滑化加工のコストが製造コストのうちで大
きな割合を占め、コスト高の要因となっていた。A sophisticated technique is required to uniformly perform the smoothing process as described above. Therefore, when manufacturing an organic electrophotographic photoreceptor, the cost of smoothing the substrate occupies a large proportion of the manufacturing cost, and has become a factor in high costs.
この発明は、上述の問題点を解消して、基体表面の平滑
化加工を省略することができ、かつ、電気的特性が優れ
、良好な画像を得ることができる有機電子写真感光体を
提供することを解決しようとする課題とする。The present invention solves the above-mentioned problems and provides an organic electrophotographic photoreceptor that can omit smoothing of the substrate surface, has excellent electrical properties, and can obtain good images. make it a problem to be solved.
〔課題を解決するための手段二
上記の課題は、この発明によれば、導電性基体と有機感
光材料を含んでなる感光層との間にアンダーコート層を
備えてなる有機電子写真感光体において、前記アンダー
コート層の膜厚を前記導電性基体表面の中心線平均粗さ
Raの5倍以上とすることにより解決される。[Means for Solving the Problems 2] According to the present invention, the above problems are achieved in an organic electrophotographic photoreceptor comprising an undercoat layer between a conductive substrate and a photosensitive layer comprising an organic photosensitive material. This can be solved by making the thickness of the undercoat layer five times or more the center line average roughness Ra of the surface of the conductive substrate.
前述のような膜厚のアンダーコート層を設けた場合、残
留電荷の蓄積が問題となる場合があるが、この問題はア
ンダーコート層に低抵抗物質を含有させることにより解
決される。When an undercoat layer having the thickness described above is provided, accumulation of residual charges may become a problem, but this problem can be solved by containing a low-resistance substance in the undercoat layer.
また、低抵抗物質の種類によっては、アンダーコート層
に含有させた場合に感光層にフリーキャリアを注入する
性質を有するものがあり、電荷保持率が悪化する。この
ようなフリーキャリアの注入を防ぐた約に、アンダーコ
ート層と感光−との間にさらに樹脂層を設けることか有
効である。Further, depending on the type of low-resistance substance, some substances have the property of injecting free carriers into the photosensitive layer when included in the undercoat layer, which deteriorates the charge retention rate. In order to prevent such injection of free carriers, it is effective to further provide a resin layer between the undercoat layer and the photosensitive layer.
ニイ乍用二
Raは導電性基体表面の凹凸の中心線かろの平均粗さを
示乙でいる。一方、アンダーコート層の膜厚は通常渦電
流式膜軍計で測定され、その基準面(七口点を示す面)
は前述の重心線とほぼ一致する。この点に着目して、R
aとアンダーニート層の膜厚との関係を画像欠陥防止の
観点から鋭意検討をすすtた結果、アンダーコート層の
膜厚をRaの5倍以上とすることによって基体表面形状
に起因する画像欠陥の発生を防止することができること
を見5)出した。このような膜厚のアンダーコート層を
設けることにより、導電性基体表面に表面のRaを0.
5μmとするような平滑化加工を施すことは不要となる
。2Ra indicates the average roughness from the center line of the unevenness on the surface of the conductive substrate. On the other hand, the thickness of the undercoat layer is usually measured using an eddy current film meter, and its reference plane (the plane showing the seven points)
almost coincides with the center of gravity line mentioned above. Focusing on this point, R
After intensive study on the relationship between Ra and the thickness of the underneat layer from the viewpoint of preventing image defects, we found that by making the thickness of the undercoat layer five times or more than Ra, image defects caused by the surface shape of the substrate can be prevented. It was found that the occurrence of 5) can be prevented. By providing an undercoat layer with such a thickness, the surface Ra of the conductive substrate can be set to 0.
It becomes unnecessary to perform smoothing processing such as making the thickness 5 μm.
この発明に係わるアンダーコート層を形成する場合には
樹脂バインダーが使用され、例えば、ポリビニルアルコ
ール、メチルセルロース、セラチン、ポリアミドなど水
あるし)はアルコールに可溶なものが有効である。When forming the undercoat layer according to the present invention, a resin binder is used. For example, polyvinyl alcohol, methylcellulose, ceratin, polyamide, etc., which are soluble in water or alcohol, are effective.
また、アンダーコート層には電気抵抗があまり高くなく
残留電荷が蓄積しないこと、特に低温。In addition, the undercoat layer has a very high electrical resistance and no residual charge accumulates, especially at low temperatures.
低湿環境下でも残留電荷の蓄積が生じないことが要望さ
れるが、このような要望を満たす上で、アンダーコート
層中に低抵抗物質を含有させることが有効である。この
ような低抵抗物質としては、ZnO,5n02. T+
[]2. In、03などの導電性微粉末を用いること
ができる。希望する抵抗を得るためには、導電性微粉末
の種類や樹脂バインダーとの混合比率を適切に選ぶこと
が必要である。導電性微粉末の大きさは05μm以下が
特に好ましい。二のように導電性微粉末を分散含有する
アンダーコート層の場合には、基体との密着性、導電性
微粉末の分散性、耐溶剤性などが良好であることが必須
要件であり、使用される樹脂バインダーとしては、エポ
キン樹脂、アルキド樹脂、ポリウレタン樹脂。It is desired that residual charge does not accumulate even in a low-humidity environment, and it is effective to include a low-resistance substance in the undercoat layer in order to satisfy such a demand. Examples of such low resistance materials include ZnO, 5n02. T+
[]2. Conductive fine powder such as In, 03, etc. can be used. In order to obtain the desired resistance, it is necessary to appropriately select the type of conductive fine powder and the mixing ratio with the resin binder. The size of the conductive fine powder is particularly preferably 0.5 μm or less. In the case of an undercoat layer containing dispersed conductive fine powder as in 2, it is essential that it has good adhesion to the substrate, good dispersibility of the conductive fine powder, and solvent resistance. Examples of resin binders include Epoquine resin, alkyd resin, and polyurethane resin.
シリコーン樹脂、フェノール樹脂などの熱硬化性樹脂が
好適である。Thermosetting resins such as silicone resins and phenolic resins are suitable.
また、導電性微粉末の種類によっては、アンダーコート
層に含有させた場合感光層にフリーキャリアを注入する
性質を有するものがあり、このような場合には感光体の
電荷保持率が悪化する。この現象を防ぐためには、アン
ダーコート層と感光層との間にさらに第2の樹脂のみの
層を薄く形成し、キャリア注入を防止するプロ;ノキン
ク層とすることがを効である。第2の樹脂層は、ポリビ
ニルアルコール、メチルセルロース、セラチン、ポリア
ミド、エポキン、ポリウレタンなどを用いて形成するこ
とができる。Furthermore, depending on the type of conductive fine powder, some have the property of injecting free carriers into the photosensitive layer when included in the undercoat layer, and in such cases, the charge retention rate of the photosensitive member deteriorates. In order to prevent this phenomenon, it is effective to further form a thin second resin-only layer between the undercoat layer and the photosensitive layer to form a protective layer that prevents carrier injection. The second resin layer can be formed using polyvinyl alcohol, methylcellulose, ceratin, polyamide, Epoquin, polyurethane, or the like.
導電性基体として、外径60証、内径58m田、長さ2
46mmのアルミニウムED管を用いる。 この基体外
表面の中心線平均粗さRaは06μmであった。As a conductive substrate, the outer diameter is 60 m, the inner diameter is 58 m, and the length is 2.
A 46 mm aluminum ED tube is used. The center line average roughness Ra of the outer surface of this substrate was 06 μm.
導電性微粉末としての2nO(粒径0.1μm)10重
中部。2nO (particle size: 0.1 μm) 10-weight part as conductive fine powder.
樹脂バインダーとしてのポリアミド樹脂(商品名:CM
8000.東し製)10重量部をメタノール80重量部
にサンドミルてよく分散させた。この分散液を基体外表
面にデイツプ法で塗布し、温度120℃で30分間加凱
処理して膜厚5μmのアンダーコート層を形成した。Polyamide resin as a resin binder (product name: CM
8000. (manufactured by Toshi) was well dispersed in 80 parts by weight of methanol using a sand mill. This dispersion was applied to the outer surface of the substrate by a dip method, and treated at a temperature of 120° C. for 30 minutes to form an undercoat layer with a thickness of 5 μm.
次に、このアンダーコート層上にポリアミド樹脂(商品
名・CM8000 、東し製)の10%メタノール溶液
を塗布して膜厚0.5μmの樹脂層を形成した。Next, a 10% methanol solution of polyamide resin (trade name: CM8000, manufactured by Toshi) was applied onto this undercoat layer to form a resin layer having a thickness of 0.5 μm.
これは導電性微粉末を含まない樹脂層である。This is a resin layer that does not contain conductive fine powder.
この樹脂層上に電荷発生層、電荷輸送層を順次積層して
感光層を形成し感光体とした。電荷発生層は、X型無金
属フタロンアニン1重量部、ポリエステル樹脂(商品名
・バイロン200.東洋紡製)1重量部およびジクロロ
メタン98重量部をペイントシェーカーで3時間分散し
た分散液をデイツプ法で塗布し温度80℃で30分間加
熱乾煙して膜厚02μmの層として形成した。また、電
荷輸送層は下記構造式の電荷輸送物質10重量部とポリ
カーボネート樹脂(商品名: P CZ−300,三菱
ガス化学製)10重量部とをジクロロメタン80重量部
に溶解させた塗布液をデイツプ法で塗布し温度80℃で
2時間加熱乾燥して膜厚20μmの層として形成した。A charge generation layer and a charge transport layer were sequentially laminated on this resin layer to form a photosensitive layer, thereby preparing a photoreceptor. The charge generation layer was prepared by applying a dispersion of 1 part by weight of X-type metal-free phthalonanine, 1 part by weight of polyester resin (trade name: Vylon 200, manufactured by Toyobo) and 98 parts by weight of dichloromethane in a paint shaker for 3 hours using a dip method. A layer having a thickness of 02 μm was formed by drying and smoking at a temperature of 80° C. for 30 minutes. The charge transport layer was prepared by dipping a coating solution in which 10 parts by weight of a charge transport substance having the following structural formula and 10 parts by weight of polycarbonate resin (product name: PCZ-300, manufactured by Mitsubishi Gas Chemical) were dissolved in 80 parts by weight of dichloromethane. The film was coated by a method and dried by heating at a temperature of 80° C. for 2 hours to form a layer with a thickness of 20 μm.
比較例1
実施例1にあ参で、2nO微粉末を含有したアンダーコ
ート層の膜厚を2μm(基体外表面のRaの5倍以下で
ある)に変えたこと以外は実施例1と同様にして感光体
を作製した。Comparative Example 1 Same as Example 1 except that the thickness of the undercoat layer containing 2nO fine powder was changed to 2 μm (less than 5 times the Ra of the outer surface of the substrate). A photoreceptor was prepared.
このようにして得られた感光体を電子写真プリンタ(N
EC製P CP R601)にそれぞれ取り付けて画像
評価を行ったところ、実施例1の感光体では良好な画像
が得られたが、比較例1の感光体では得られた画像は黒
点が目立ち劣悪な画質であった。The photoreceptor thus obtained was printed on an electrophotographic printer (N
When the images were evaluated by attaching them to EC's P CP R601), good images were obtained with the photoconductor of Example 1, but poor images were obtained with the photoconductor of Comparative Example 1 with noticeable black spots. The image quality was good.
実施例2
導電性微粉末としてのTlO2(粒径005μm)とポ
リアミド樹脂(商品名・CM8000 、東し製)とを
1=1の比率で混合し、これにメタノールを適宜加えて
サンドミルで良く分散させ、数種類の固形比(すなわち
粘度)の異なる分散液を調製し、実施例1で用いたのと
同様の基体外表面にデイツプ法で塗布して、膜厚が1μ
m、2μm、 4μm。Example 2 TlO2 (particle size: 005 μm) as conductive fine powder and polyamide resin (trade name: CM8000, manufactured by Toshi) were mixed at a ratio of 1:1, methanol was appropriately added to this, and the mixture was well dispersed using a sand mill. Several kinds of dispersions with different solid ratios (i.e., viscosities) were prepared and applied to the outer surface of the substrate similar to that used in Example 1 by the dip method to obtain a film thickness of 1 μm.
m, 2μm, 4μm.
6μm、 10μmと5通りに異なるアンダーコート層
を設けた5種類の基体を準備した。これろの基体上に実
施例1と同様にしてそれぞれ膜厚05μmのポリアミド
樹脂層、電荷発生層、電荷輸送層を順次形成してアンダ
ーコート層の膜厚のみ異なる5種類の感光体を作製した
。Five types of substrates were prepared with five different undercoat layers of 6 μm and 10 μm. A polyamide resin layer, a charge generation layer, and a charge transport layer each having a thickness of 05 μm were sequentially formed on these substrates in the same manner as in Example 1, thereby producing five types of photoreceptors that differed only in the thickness of the undercoat layer. .
これら実施例2の感光体について、実施例1の場合と同
様にして画像評価を行った。その結果を第1表に示す。Image evaluation was performed on the photoreceptors of Example 2 in the same manner as in Example 1. The results are shown in Table 1.
第 1 表
第1表に見られるとおり、アンダーコート層の膜厚が基
体表面のRaの5倍である3μmを境にして、画質(特
に黒点)に明らかな差異が認められる。Table 1 As shown in Table 1, there is a clear difference in image quality (especially black dots) when the thickness of the undercoat layer reaches 3 μm, which is 5 times the Ra of the substrate surface.
〔発明の効果二・
この発明によれば、有機電子写真感光体において、導電
性基体と感光層との間に設けるアンダーコート層の膜厚
を基体の中心線平均粗さRaの5倍以上とすることによ
り、基体表面の粗さを覆うことができるので、基体表面
の平滑化加工を行わなくても、電気的特性が優れ、良好
な画像が得られる感光体が作製でき製造コストを下げる
ことができる。[Effect of the invention 2- According to the invention, in the organic electrophotographic photoreceptor, the thickness of the undercoat layer provided between the conductive substrate and the photosensitive layer is 5 times or more the center line average roughness Ra of the substrate. By doing so, the roughness of the substrate surface can be covered, so a photoreceptor with excellent electrical properties and good images can be produced without the need for smoothing the substrate surface, and manufacturing costs can be reduced. I can do it.
また、前述のような膜厚のアンダーコート層を設けた場
合、残留電荷の蓄積が問題となる場合があるが、アンダ
ーコート層に低抵抗物質を含有させるとこのような残留
電位の蓄積゛を防ぐことが可能となる。In addition, when an undercoat layer with the thickness described above is provided, accumulation of residual electric charge may become a problem, but if the undercoat layer contains a low-resistance substance, such accumulation of residual electric potential can be prevented. It is possible to prevent this.
また、アンダーコート層に低抵抗物質を含有させた場合
、感光層へのフリーキャリアの注入が問題となる場合が
あるが、アンダーコート層と感光層との間に樹脂層を設
けることによりフリーキャリアの注入を防ぎ、電荷保持
率の低下を防ぐことができる。In addition, when the undercoat layer contains a low-resistance substance, injection of free carriers into the photosensitive layer may become a problem, but by providing a resin layer between the undercoat layer and the photosensitive layer, free carriers can be can be prevented from being injected, and a decrease in charge retention rate can be prevented.
Claims (1)
間にアンダーコート層を備えてなる有機電子写真感光体
において、前記アンダーコート層が前記導電性基体表面
の中心線平均粗さRaの5倍以上の膜厚であることを特
徴とする有機電子写真感光体。 2)アンダーコート層が低抵抗物質を含有していること
を特徴とする請求項1記載の有機電子写真感光体。 3)アンダーコート層と感光層との間に樹脂層を設けた
ことを特徴とする請求項2記載の有機電子写真感光体。[Scope of Claims] 1) An organic electrophotographic photoreceptor comprising an undercoat layer between a conductive substrate and a photosensitive layer containing an organic photosensitive material, wherein the undercoat layer covers the surface of the conductive substrate. An organic electrophotographic photoreceptor characterized in that the film thickness is five times or more the center line average roughness Ra. 2) The organic electrophotographic photoreceptor according to claim 1, wherein the undercoat layer contains a low resistance substance. 3) The organic electrophotographic photoreceptor according to claim 2, characterized in that a resin layer is provided between the undercoat layer and the photosensitive layer.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP31365290A JPH04184346A (en) | 1990-11-19 | 1990-11-19 | Organic electrophotographic sensitive body |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP31365290A JPH04184346A (en) | 1990-11-19 | 1990-11-19 | Organic electrophotographic sensitive body |
Publications (1)
Publication Number | Publication Date |
---|---|
JPH04184346A true JPH04184346A (en) | 1992-07-01 |
Family
ID=18043887
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP31365290A Pending JPH04184346A (en) | 1990-11-19 | 1990-11-19 | Organic electrophotographic sensitive body |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH04184346A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2011112863A (en) * | 2009-11-26 | 2011-06-09 | Canon Inc | Method for manufacturing electrophotographic photoreceptor, electrophotographic photoreceptor, process cartridge, and electrophotographic apparatus |
-
1990
- 1990-11-19 JP JP31365290A patent/JPH04184346A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2011112863A (en) * | 2009-11-26 | 2011-06-09 | Canon Inc | Method for manufacturing electrophotographic photoreceptor, electrophotographic photoreceptor, process cartridge, and electrophotographic apparatus |
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