JPS6162040A - Electrophotografic sensitive body - Google Patents

Electrophotografic sensitive body

Info

Publication number
JPS6162040A
JPS6162040A JP18372184A JP18372184A JPS6162040A JP S6162040 A JPS6162040 A JP S6162040A JP 18372184 A JP18372184 A JP 18372184A JP 18372184 A JP18372184 A JP 18372184A JP S6162040 A JPS6162040 A JP S6162040A
Authority
JP
Japan
Prior art keywords
charge transport
polycarbonate resin
layer
transport layer
group
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.)
Granted
Application number
JP18372184A
Other languages
Japanese (ja)
Other versions
JPH0349426B2 (en
Inventor
Hideko Yamazaki
山崎　秀子
Shiro Kito
鬼頭　司朗
Ichiro Takegawa
一郎 竹川
Yasuo Sakaguchi
泰生 坂口
Kazuyuki Nakamura
和行 中村
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.)
Fujifilm Business Innovation Corp
Original Assignee
Fuji Xerox 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 Fuji Xerox Co Ltd filed Critical Fuji Xerox Co Ltd
Priority to JP18372184A priority Critical patent/JPS6162040A/en
Publication of JPS6162040A publication Critical patent/JPS6162040A/en
Publication of JPH0349426B2 publication Critical patent/JPH0349426B2/ja
Granted legal-status Critical Current

Links

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
    • G03G5/0528—Macromolecular bonding materials
    • G03G5/0557—Macromolecular bonding materials obtained otherwise than by reactions only involving carbon-to-carbon unsatured bonds
    • G03G5/0564—Polycarbonates

Landscapes

  • Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • General Physics & Mathematics (AREA)
  • Photoreceptors In Electrophotography (AREA)

Abstract

PURPOSE:To obtain a copy having stable image quality for along period by using a polymer formed by blending a specific arom. polycarbonate resin with a bisphenol polycarbonate resin as the binder polymer of a charge transfer layer. CONSTITUTION:The polymer formed by blending the arom. polycarbonate resin expressed by the formulas 1, 2 is used as the binder polymer of the charge transfer layer. In the formula 2, X, X' denote a hydrogen atom, halogen atom or methyl group, R denotes a hydrogen atom, halogen atom, hydroxyl group, carboxyl group, acetyl group or alkyl group of 1-5C. The ratio of the resin expressed by the formula 2 in the binder polymer is adequately 10-90wt%, more particularly preferably 40-60wt%. The crystallization resistance of the charge transfer by the solvent used for coating the upper layer is thus improved and the generation of a solvent crack is obviated as well. Such photosensitive body is provided with the electrical characteristic exactly equal to the electrical characteristic of the photosensitive body for which ordinary bisphenol polycarbonate is used alone.

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感光体に関し、さらに詳細には、２
種以上の芳香族ポリカーボネート樹脂をブレンドしたポ
リマーをバインダーとして使用した電荷輸送層を有する
電子写真用感光体に関するものである。[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to an electrophotographic photoreceptor, and more particularly,
The present invention relates to an electrophotographic photoreceptor having a charge transport layer using as a binder a polymer blended with more than one type of aromatic polycarbonate resin.

〔従来技術〕[Prior art]

一般に有機感光体は蒸着等の方法により導電層を形成し
た（ポリエチレンテレフタレート）等のフィルム」二に
、塗布工程により層形成する事により、フレキシブルな
感光体を作製する事が出来る。In general, organic photoreceptors are made of films such as polyethylene terephthalate (polyethylene terephthalate) on which a conductive layer is formed by a method such as vapor deposition.Secondly, a flexible photoreceptor can be produced by forming a layer through a coating process.

この様な感光体は、ベルト」二に加工して電子写真複写
機の中で繰り返し使用出来るため、複写機のハードウェ
アの形状の自由度を広げることができるという利点を有
している。Such a photoreceptor can be processed into a belt and used repeatedly in an electrophotographic copying machine, so it has the advantage of increasing the degree of freedom in the shape of the copying machine hardware.

この積層型有機感光体において、電荷輸送層のバインダ
ーポリマーとしてビスフェノール（Δ）のポリカーボネ
ート樹脂が良く利用されている。In this layered organic photoreceptor, bisphenol (Δ) polycarbonate resin is often used as a binder polymer for the charge transport layer.

ビスフェノール（Δ）ポリカーボネート樹脂は、電荷輸
送材料との相溶性が良いため感光体として作製した場合
に電気特性が良好であり、また比較的機械的強度が強い
という特徴を有している。しかしながら電子写真用感光
体の電荷輸送層のバインダーポリマーとしてビスフェノ
ール（Δ）ポリカーボネート樹脂を用いた場合、いくつ
かの欠点を有することがわかった。第１に感光体作製時
において、上層塗布溶媒の種類によっては、電荷輸送層
中で容易に結晶化を生じる。結晶化を生じた部分では光
減衰がなく、電荷が残留電位となって残り、画質上ディ
フェクトとなって出現する。第２に上層塗布溶媒によっ
てビスフェノール（△）ポリカーボネート樹脂のソルベ
ントクラックという現象が生じる。すなわち一度塗布形
成された電荷輸送層の再び他の溶媒にさらす事によって
電荷輸送層の機械的強度が著しく低下する現象が生じる
。この様な感光体ベルトを用いて複写機中で長時間ベル
トを回転させると、電荷輸送層に亀裂が生じそれがコピ
ー上にひび割れ模様となって現れるようになる。Bisphenol (Δ) polycarbonate resin has good compatibility with charge transport materials, so when it is produced as a photoreceptor, it has good electrical properties and relatively strong mechanical strength. However, it has been found that when bisphenol (Δ) polycarbonate resin is used as a binder polymer for the charge transport layer of an electrophotographic photoreceptor, it has several drawbacks. First, during the production of a photoreceptor, crystallization easily occurs in the charge transport layer depending on the type of upper layer coating solvent. In the area where crystallization has occurred, there is no light attenuation, and the charge remains as a residual potential, which appears as a defect in image quality. Secondly, a phenomenon called solvent cracking occurs in the bisphenol (Δ) polycarbonate resin due to the upper layer coating solvent. That is, when a charge transport layer once formed by coating is exposed to another solvent again, a phenomenon occurs in which the mechanical strength of the charge transport layer is significantly reduced. When such a photoreceptor belt is rotated for a long period of time in a copying machine, cracks occur in the charge transport layer, which appear as a crack pattern on the copy.

〔発明の目的〕[Purpose of the invention]

本発明は、この様なビスフェノール（Δ）ポリカーボネ
ート樹脂を用いた場合に認められる欠点のない電子写真
用感光体を提供することである。The object of the present invention is to provide an electrophotographic photoreceptor free from the drawbacks observed when such a bisphenol (Δ) polycarbonate resin is used.

〔発明の構成〕[Structure of the invention]

本発明者らは、電荷輸送層のバインダーポリマーとして
ビスフェノール（Ａ＞ポリカーボネート樹脂に下記の一
般式〔２〕で示される芳香族ポリカーボネート樹脂をブ
レンドしたポリマーを用いることによりこれらの問題点
を解決出来る事を見い出し、本発明を完成するに至った
。The present inventors have discovered that these problems can be solved by using a polymer obtained by blending bisphenol (A>polycarbonate resin with an aromatic polycarbonate resin represented by the following general formula [2]) as a binder polymer for the charge transport layer. They discovered this and completed the present invention.

本発明は、少なくとも電荷発生層と電荷輸送層を有する
積層型電子写真用感光体において、電荷輸送層のバイン
ダーとして、下記構造式〔１〕及び〔２〕で示される芳
香族ポリカーボネート樹脂をブレンドしたポリマーを用
いた事を特徴とする電子写真用感光体である。The present invention provides a laminated electrophotographic photoreceptor having at least a charge generation layer and a charge transport layer, in which an aromatic polycarbonate resin represented by the following structural formulas [1] and [2] is blended as a binder for the charge transport layer. This is an electrophotographic photoreceptor characterized by using a polymer.

ｌ＜ 〔２〕 ただし構造式〔２〕中ｘ、ｘ’は水素原子、ハロゲン原
子またはメチル基を、Ｒは水素原子、ハロゲン原子、水
酸基、カルボキシル基、アセチル基、または炭素数１〜
５のアルキル基を表わす。l< [2] However, in the structural formula [2], x and x' are hydrogen atoms, halogen atoms, or methyl groups, and R is hydrogen atoms, halogen atoms, hydroxyl groups, carboxyl groups, acetyl groups, or carbon atoms of 1 to
5 represents an alkyl group.

バインダーポリマー中の樹脂〔２〕の割合は１０〜９０
ｗｔ％が適当であり、特に４０〜６０ｗｔ％が好ましい
。The ratio of resin [2] in the binder polymer is 10 to 90
Wt% is appropriate, and 40 to 60 wt% is particularly preferred.

以下に〔２〕で示される化合物の具体例を示すが、本発
明に使用される化合物が、これらの化合物に限られるわ
けではない。Specific examples of the compound represented by [2] are shown below, but the compounds used in the present invention are not limited to these compounds.

三　　　　　芭　　　　　　宛　　　　　　兄　　　　
　色部　　　　　　ｇ　　　　　　　　Ｂ　　　　　　
　　ｇ　　　　　　都〈口　　　　　　　　　〈ロ　　
　　　　　　　　　〈口　　　　　　　　　　　〈口　
　　　　　　　　〈ロミ２　　　　　　　　ギ　　　　
　　　　　　ミ２　　　　　　　　　　ミ２　　　　　
　　　ミ２ヒＪ：：０　　　　　　　　　　　　（Ｊ−
■［Ｆ］さ 超　　　　　　　５ 〈口　　　　　　　　　〈口 （Ｊ：Ｃ）　　　　　　　　　　　ＣＪ：：０　　　　
　　　　　　■ｍ：０　　　　　　　　　Ｃｊ、：：　
口ω　　　　　　　　　　　　　ｏｅ２　　　　　　　
　　　　２も　　　　　　　　釈　　　　　　　毬　　
　　　　　都〈口　　　　　　　　　　〈口　　　　　
　　　　〈口　　　　　　　　　〈口ヒ」＝０　　　　
　　　　　　ヒ」＝０　　　　　　　　　　　　ヒ」＝
０Ｃ都　　　　　　　　曇 〈口　　　　　　　　　〈口　　　　　　　　　　〈口
この様な２種の芳香族ポリカーボネートをブレンドした
ポリマーを用いた場合には、上層塗布溶媒による電荷輸
送層の耐結晶性が向上し、またソルベントクラブクも生
じない事が判明した。さらにこの様なポリマーを電荷輸
送層のバインダーとして用いた感光体は、通常のビスフ
ェノール（Ａ）ポリカーボネートを単独で用いた感光体
と比較して、全く同等の電気的特性が得られることも判
明した。Sanba to brother
Colored part g B
g capital 〈mouth〈ro
〈mouth〈mouth
<Romi 2 Gi
Mi2 Mi2
Mi2hiJ::0 (J-
■[F] Sacho 5 <mouth <mouth (J:C) CJ::0
■m:0 Cj,::
mouth ω oe2
2 also interpretation
capital 〈mouth〈mouth
〈mouth〈mouthhi〉＝0
Hi' = 0 Hi' =
0C metropolitan clouds <mouth <mouth <mouth <If a polymer blended with two such aromatic polycarbonates, the high -layered solvent will improve the crystal resistance of the charge transportation layer, and a solvent club will also occur. It turned out that there was no. Furthermore, it was found that a photoreceptor using such a polymer as a binder in the charge transport layer has exactly the same electrical properties as a photoreceptor using ordinary bisphenol (A) polycarbonate alone. .

本発明の電子写真用感光体は、導電層上に少なくとも電
荷発生層と電荷輸送層を有するものであり、電荷発生層
上に電荷輸送層が積層されていても、その逆の構造であ
ってもよい。また必要に応じて表面層に導電性又は絶縁
性の保護層が形成されていてもよい。The electrophotographic photoreceptor of the present invention has at least a charge generation layer and a charge transport layer on a conductive layer, and may have a structure in which the charge transport layer is laminated on the charge generation layer or vice versa. Good too. Further, a conductive or insulating protective layer may be formed on the surface layer as necessary.

さらに、各層間の接着性を向上させるための接着層ある
いは電荷のブロッキングの役目を果たす中間層等が形成
されていてもよい。この感光体の導電性基板材料として
は、アルミニウム、銅、ニッケルの様な金属板、あるい
は金属シート、さらにプラスチックシート上にアルミニ
ウム、ニッケル、クロム等の導電性物質を蒸着、スパッ
タリング等によりコーティングし導電化処理を施したも
の、あるいはガラス、プラスチック板、布、紙などを導
電性処理したもの等が使用できる。電荷発生層における
電荷発生材料としては、非晶質セレン、三方晶セレン、
酸化亜鉛、フタロシアニン、スクェアリウム顔料、ピリ
リウム塩、シアニン等を用いる事ができる。電荷発生層
におけるバインダーポリマーとじては、ポリスチレン、
ポリ塩化ビニル、ポリ酢酸ビニル、塩ビー酢ビ共重合体
、ポリビニルアセクール、アルキッド樹脂、アクリル樹
脂、ポリアクリロニトリル、ポリカーボネート、ポリア
ミド、ポリケトン、ポリアクリルアミド、ブチラール樹
脂、ポリエステルなどの熱可塑性樹脂、ポリウレタン、
エポキシ樹脂、フェノール樹脂のような熱硬化性樹脂な
ど公知のものが用いられる。Furthermore, an adhesive layer for improving the adhesion between each layer or an intermediate layer for blocking charges may be formed. The conductive substrate material for this photoreceptor is a metal plate or sheet made of aluminum, copper, or nickel, or a plastic sheet coated with a conductive substance such as aluminum, nickel, or chromium by vapor deposition or sputtering. It is possible to use materials that have been subjected to a chemical treatment, or materials that have been treated with conductivity such as glass, plastic plates, cloth, or paper. As the charge generation material in the charge generation layer, amorphous selenium, trigonal selenium,
Zinc oxide, phthalocyanine, squareium pigment, pyrylium salt, cyanine, etc. can be used. Binder polymers in the charge generation layer include polystyrene,
Polyvinyl chloride, polyvinyl acetate, vinyl chloride-vinyl acetate copolymer, polyvinyl acecool, alkyd resin, acrylic resin, polyacrylonitrile, polycarbonate, polyamide, polyketone, polyacrylamide, butyral resin, thermoplastic resin such as polyester, polyurethane,
Known thermosetting resins such as epoxy resins and phenol resins can be used.

電荷発生層は上記の電荷発生材料をバインダーポリマー
とともに溶媒により粉砕もしくは溶解し■１ た塗布液を塗布・乾燥する事により形成する事ができる
。The charge generation layer can be formed by pulverizing or dissolving the above charge generation material together with a binder polymer in a solvent, applying and drying a coating solution.

電荷輸送層における電荷輸送物質としては電子輸送性物
質と正孔輸送性物質があり、電子輸送性物質としては、
クロルアニル、ブロモアニル、テトラシアノエチレン、
テトラシアノキノジメクン、２．４．７−ドリニトロー
９−フルオレノン、２．４，５．７−テトラニトロ−９
−フルオレノン、２，４．７−）リニトロー９−ジシア
ノメチレンフルオレノン、２．４，５．７−チトラニト
ロキサントン、２，４．９−トリニドロチオキサントン
等の電子吸引性物質やこれら電子吸引性物質を高分子化
したもの等がある。Charge transport materials in the charge transport layer include electron transport materials and hole transport materials.
Chloranil, bromoanil, tetracyanoethylene,
Tetracyanoquinodimecun, 2.4.7-dolinitro-9-fluorenone, 2.4,5.7-tetranitro-9
Electron-withdrawing substances such as -fluorenone, 2,4,7-)linitro-9-dicyanomethylenefluorenone, 2,4,5,7-titranitroxanthone, 2,4,9-trinidrothioxanthone, and these electron-withdrawing substances There are also polymerized products.

正孔輸送物質としては、ピレン、Ｎ−エチルカルバゾー
ル、Ｎ−イソプロピルカルバゾール、Ｎ−メチル−Ｎ−
フェニルヒドラジノ−３−メチリデン−９−エチルカル
バゾール、Ｎ、Ｎ−ジフェニルヒドラジノ−３−メチリ
テ゛ンー９−エチルカルバゾール、Ｎ、Ｎ−ジフェニル
ヒドラジノ−３−メチリデン−１０−エチルフェノチア
ジン、Ｎ、Ｎ−ジフェニルヒドラジノ−３−メチリデン
−１０−エチルフェノキサジン、Ｐ−ジエチルアミノベ
ンズアルデヒド−Ｎ、Ｎ−ジフェニルヒドラゾン、Ｐ−
ジエチルアミノベンズアルデヒド−Ｎ−α＝ナフチルー
Ｎ−フェニルヒドラゾン、Ｐ−ピロリジノベンズアルデ
ヒド−Ｎ、Ｎ−ジフェニルヒドラゾン、Ｎ、Ｎ’−ジフ
ェニル−Ｎ、Ｎ’−ビス（メチルフェニル）ベンジジン
、Ｎ、Ｎ’−ジフェニル−Ｎ、Ｎ’−ビス（エチルフェ
ニル）ベンジジン、Ｎ、Ｎ’−ジフェニル−Ｎ、Ｎ’　
−ビス（プロピルフェニル）ベンジジン、Ｎ、Ｎ’−ジ
フェニル−Ｎ、Ｎ“−ビス（ブチルフェニル）−ベンジ
ジン、Ｎ、Ｎ’−ビス（イソプロピルフェニル）−ベン
ジジン、Ｎ、Ｎ’−ジフェニル−Ｎ、Ｎ’−ビス（１２
級ブチルフェニル）−ベンジジン、Ｎ、Ｎ’−ジフェニ
ル−Ｎ、Ｎ’−ビス（第３級ブチルフェニル）−ベンジ
ジンおよびＮ、Ｎ’−ジフェニル−Ｎ、Ｎ’−ビス（ク
ロロフェニル）−ベンジジン等がある。As the hole transport substance, pyrene, N-ethylcarbazole, N-isopropylcarbazole, N-methyl-N-
Phenylhydrazino-3-methylidene-9-ethylcarbazole, N,N-diphenylhydrazino-3-methylidene-9-ethylcarbazole, N,N-diphenylhydrazino-3-methylidene-10-ethylphenothiazine, N,N- Diphenylhydrazino-3-methylidene-10-ethylphenoxazine, P-diethylaminobenzaldehyde-N, N-diphenylhydrazone, P-
Diethylaminobenzaldehyde-N-α=naphthyl-N-phenylhydrazone, P-pyrrolidinobenzaldehyde-N, N-diphenylhydrazone, N,N'-diphenyl-N, N'-bis(methylphenyl)benzidine, N,N'- Diphenyl-N,N'-bis(ethylphenyl)benzidine, N,N'-diphenyl-N,N'
-bis(propylphenyl)benzidine, N,N'-diphenyl-N, N"-bis(butylphenyl)-benzidine, N,N'-bis(isopropylphenyl)-benzidine, N,N'-diphenyl-N, N'-bis(12
butylphenyl)-benzidine, N,N'-diphenyl-N,N'-bis(tertiary butylphenyl)-benzidine and N,N'-diphenyl-N,N'-bis(chlorophenyl)-benzidine, etc. be.

電荷輸送層はこれらの電荷輸送材料をビスフェノール（
Ａ）ポリカーボネート樹脂と構造式〔２〕に示す芳香族
ポリカーボネートをブレンドしたポリマーとともに溶解
した塗布液を塗布、乾燥する事により形成する事が出来
る。電荷発生層、電荷輸送層の塗布液に用いる事が出来
る溶剤としては、ベンゼン、トルエン、キシレン、クロ
ルベンゼンなどの芳香族炭化水素、アセトン、メチルエ
チルケトン、シクロヘキサノンなどのケトン、メタノー
ル、エタノール、イソプロパツールなどのアルコール、
酢酸エチル、メチルセロソルブなどのエステル、四塩化
炭素、四臭化炭素、クロロホルム、ジクロルメタンなど
のハロゲン化炭化水素、テトラヒドロフラン、ジオキサ
ンのようなエーテル、およびジメチルホルムアミド、ジ
メチルスルホキシドなどがある。The charge transport layer uses these charge transport materials as bisphenol (
A) It can be formed by applying a coating liquid in which a polycarbonate resin and an aromatic polycarbonate shown in structural formula [2] are dissolved together with a blended polymer and drying. Solvents that can be used in the coating solution for the charge generation layer and charge transport layer include aromatic hydrocarbons such as benzene, toluene, xylene, and chlorobenzene, ketones such as acetone, methyl ethyl ketone, and cyclohexanone, methanol, ethanol, and isopropanol. alcohol, such as
Examples include esters such as ethyl acetate and methyl cellosolve, halogenated hydrocarbons such as carbon tetrachloride, carbon tetrabromide, chloroform and dichloromethane, ethers such as tetrahydrofuran and dioxane, and dimethylformamide and dimethyl sulfoxide.

各層の塗布は、アプリケーター、スプレーコーター、バ
ーコーター、デツプコーター、ドクターブレード等を用
いて行われる。Each layer is applied using an applicator, spray coater, bar coater, dip coater, doctor blade, or the like.

〔実施例の説明〕[Explanation of Examples]

以下に本発明の実施例を示す。１部」は他に明記しない
限り１重量部」である。Examples of the present invention are shown below. 1 part means 1 part by weight unless otherwise specified.

〈実施例１〉 導電性透明支持体（１００μｍのポリエチレンテレフタ
レートフィルム表面−にに酸化インジウムの蒸着膜を設
けたもの、表面抵抗１０３　Ω）」−に、トリフェニル
メタン２部とビスフェノール（Δ）ポリカーボネートと
化合物（１）の芳香族ポリカーボネートを重量で１：１
の割合でブレンドしたポリマー４部とをジクロロメタン
６０部に溶解した塗布液をワイヤーラウンドロッドを用
いて塗布乾燥し、厚さ８μｍの電荷輸送層を形成した。<Example 1> 2 parts of triphenylmethane and bisphenol (Δ) polycarbonate were added to a conductive transparent support (a 100 μm polyethylene terephthalate film with a vapor-deposited film of indium oxide on the surface, surface resistance 103 Ω). and the aromatic polycarbonate of compound (1) in a ratio of 1:1 by weight.
A coating solution prepared by dissolving 4 parts of a blended polymer in 60 parts of dichloromethane was applied using a wire round rod and dried to form a charge transport layer with a thickness of 8 μm.

この上に下記構造式で示されるスクェアリウム顔料２部
と、ポリエステル樹脂（東洋紡バイロン２００）２部と
をジクロロメタン１３０部、１．Ｉ、２−トリクロロエ
タン１３０部との混合溶媒中に混合し、これをボールミ
ルで粉砕して塗布液とし、ワイヤーラウンドロッドを用
いて塗布乾燥し、厚さ１μｍの電荷発生層を形成した。On top of this, 2 parts of Squarium pigment represented by the following structural formula, 2 parts of polyester resin (Toyobo Vylon 200), 130 parts of dichloromethane, 1. The mixture was mixed in a mixed solvent with 130 parts of I,2-trichloroethane and ground in a ball mill to obtain a coating solution, which was coated and dried using a wire round rod to form a charge generation layer with a thickness of 1 μm.

この場合電荷発生層塗布時に電荷輸送層が結晶化する事
はなかった。またこの感光体をウエルデインクしてベル
ト状感光体を作製し、２インチＲのロール用いたベルト
モジュールでコピーをとりながらベルトを連続回転して
いったところ、３０キロサイクルまで感光体上に亀裂は
認められなかった。またこの間画質も良好なものが碍ら
れた。In this case, the charge transport layer did not crystallize during coating of the charge generation layer. In addition, welded this photoreceptor to produce a belt-shaped photoreceptor, and when the belt was continuously rotated while making copies using a belt module using a 2-inch R roll, there were no cracks on the photoreceptor until 30 kilocycles. I was not able to admit. During this period, the image quality was also improved.

く比較例１〉 実施例１において電荷輸送層中のバインダーポリマーと
してビスフェノール（Δ）ポリカーボネート（マクロロ
ン５７０５分子量１０万）を用い電荷輸送層を形成した
。この」二に実施例１と同じ条件で電荷発生層を形成し
たところ、電荷輸送層中に結晶が発生していることが認
められた。そこで実施例１の電荷発生層形成溶液のジク
ロロメタンの量を２６０部に変更して電荷発生層を塗布
・乾燥した。Comparative Example 1 In Example 1, a charge transport layer was formed using bisphenol (Δ) polycarbonate (Macrolon 5705, molecular weight 100,000) as the binder polymer in the charge transport layer. When a charge generation layer was formed on this layer under the same conditions as in Example 1, it was observed that crystals were generated in the charge transport layer. Therefore, the amount of dichloromethane in the charge generation layer forming solution of Example 1 was changed to 260 parts, and the charge generation layer was coated and dried.

この場合には電荷輸送層の結晶化は認められなかった。In this case, no crystallization of the charge transport layer was observed.

しかし、この感光体を実施例１に示す方法でベルト状に
加工し連続回転したところ、５Ｋｃの時点で感光体」二
に亀裂が生じ、コピー状に亀裂模様が発生した。However, when this photoreceptor was processed into a belt shape by the method shown in Example 1 and continuously rotated, cracks appeared in the photoreceptor at 5Kc, and a crack pattern appeared on the copy.

〈実施例２〉 Ｎ−エチルカルバゾール２部と、ビスフェノール（△）
ポリカーボネートと化合物（２）のポリカーボネートを
重量比１：１の割合でブレンドしたポリマー２部を、ジ
クロロメタン２０部に溶解した塗布液を、ウェットギャ
ップ７μｍのオートマチックアプリケーターを用いてΔ
ｌシート上に塗布・乾燥して２５μｍの電荷輸送層を形
成した。また同様の方法でバインダーとしてビスフェノ
ール（Δ）ポリカーボネートをＣ１ｔ独で用いた電荷輸
送層も作製した。これらの塗膜をΔｐレシートら剥離後
、折り曲げ試験機（東洋゛精機：ＭＩＴ耐揉疲労試験機
）を用いて荷重ＩＫｇＷで耐揉試験を丁１ない、塗布膜
が破壊されるまでの折り曲げ回数を求めた。その結果を
表１に示す。<Example 2> 2 parts of N-ethylcarbazole and bisphenol (△)
A coating solution prepared by dissolving 2 parts of a polymer obtained by blending polycarbonate and polycarbonate of compound (2) at a weight ratio of 1:1 in 20 parts of dichloromethane was applied to Δ using an automatic applicator with a wet gap of 7 μm.
A charge transport layer having a thickness of 25 μm was formed by coating and drying on a 1-sheet. In addition, a charge transport layer using C1t alone and bisphenol (Δ) polycarbonate as a binder was also produced in a similar manner. After peeling off these coating films from the Δp receipt, a bending test was conducted using a bending tester (Toyo Seiki Co., Ltd.: MIT rubbing fatigue tester) at a load of IkgW. I asked for The results are shown in Table 1.

上表から明らかな様にバインダーとしてビスフェノール
（Δ）ポリカーボネートを単独で用いるより、他のポリ
カーボネートとブレンドしたポリマーを用いた場合の方
が、初期強度も強く、溶剤処理による影響も少ない。ま
たこれらの２つの材料系における電荷輸送層」−に実施
例１で示す電荷発生層を塗布形成し、川口電機ＳＰ’−
４２８で電気特性を調べたところほぼ同等の特性を示し
た。As is clear from the table above, using a polymer blended with other polycarbonates has higher initial strength and is less affected by solvent treatment than using bisphenol (Δ) polycarbonate alone as a binder. Furthermore, the charge generation layer shown in Example 1 was coated and formed on the charge transport layer in these two material systems, and Kawaguchi Electric SP'-
When the electrical characteristics of 428 were investigated, they showed almost the same characteristics.

〔発明の効果〕〔Effect of the invention〕

本発明の電子写真用感光体は、その作製時、電荷輸送層
において結晶化を起こすことがなく、またソルベントク
ラックの現象も起こらない。したがって、複写機に装着
し、連続使用した場合にも、長時間、安定な画質のコピ
ーが得られる。When the electrophotographic photoreceptor of the present invention is manufactured, crystallization does not occur in the charge transport layer, and the phenomenon of solvent cracks does not occur. Therefore, even when it is installed in a copying machine and used continuously, copies with stable image quality can be obtained for a long time.

Claims (1)

【特許請求の範囲】 　少なくとも電荷発生層と電荷輸送層を有する積層型電
子写真用感光体において、電荷輸送層のバインダーとし
て、下記構造式〔１〕及び〔２〕で示される芳香族ポリ
カーボネート樹脂をブレンドしたポリマーを用いた事を
特徴とする電子写真用感光体。 ▲数式、化学式、表等があります▼　 〔１〕 （ビスフェノール（Ａ）ポリカーボネート 樹脂） ▲数式、化学式、表等があります▼　 〔２〕 ただし構造式〔２〕中Ｘ、Ｘ’は水素原子、ハロゲン原
子またはメチル基を、Ｒは水素原子、ハロゲン原子、水
酸基、カルボキシル基、アセチル基、または炭素数１〜
５のアルキル基を表わす。[Scope of Claims] In a laminated electrophotographic photoreceptor having at least a charge generation layer and a charge transport layer, an aromatic polycarbonate resin represented by the following structural formulas [1] and [2] is used as a binder for the charge transport layer. An electrophotographic photoreceptor characterized by using a blended polymer. ▲There are mathematical formulas, chemical formulas, tables, etc.▼ [1] (Bisphenol (A) polycarbonate resin) ▲There are mathematical formulas, chemical formulas, tables, etc.▼ [2] However, in the structural formula [2], X and X' are hydrogen atoms, halogens atom or methyl group, R is a hydrogen atom, a halogen atom, a hydroxyl group, a carboxyl group, an acetyl group, or a carbon number of 1 to
5 represents an alkyl group.
JP18372184A 1984-09-04 1984-09-04 Electrophotografic sensitive body Granted JPS6162040A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP18372184A JPS6162040A (en) 1984-09-04 1984-09-04 Electrophotografic sensitive body

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP18372184A JPS6162040A (en) 1984-09-04 1984-09-04 Electrophotografic sensitive body

Publications (2)

Publication Number Publication Date
JPS6162040A true JPS6162040A (en) 1986-03-29
JPH0349426B2 JPH0349426B2 (en) 1991-07-29

Family

ID=16140795

Family Applications (1)

Application Number Title Priority Date Filing Date
JP18372184A Granted JPS6162040A (en) 1984-09-04 1984-09-04 Electrophotografic sensitive body

Country Status (1)

Country Link
JP (1) JPS6162040A (en)

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