JPH0543108B2 - - Google Patents
Info
- Publication number
- JPH0543108B2 JPH0543108B2 JP59246918A JP24691884A JPH0543108B2 JP H0543108 B2 JPH0543108 B2 JP H0543108B2 JP 59246918 A JP59246918 A JP 59246918A JP 24691884 A JP24691884 A JP 24691884A JP H0543108 B2 JPH0543108 B2 JP H0543108B2
- Authority
- JP
- Japan
- Prior art keywords
- formula
- charge
- photoreceptor
- photoreceptors
- 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.)
- Expired - Lifetime
Links
- 108091008695 photoreceptors Proteins 0.000 claims description 39
- -1 benzidine compound Chemical class 0.000 claims description 5
- 229910052801 chlorine Inorganic materials 0.000 claims description 4
- 125000001309 chloro group Chemical group Cl* 0.000 claims description 4
- 125000004435 hydrogen atom Chemical group [H]* 0.000 claims description 4
- 125000003545 alkoxy group Chemical group 0.000 claims description 3
- 125000000217 alkyl group Chemical group 0.000 claims description 3
- 125000000956 methoxy group Chemical group [H]C([H])([H])O* 0.000 claims description 3
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 claims description 3
- 239000000126 substance Substances 0.000 description 15
- 230000032258 transport Effects 0.000 description 15
- 230000035945 sensitivity Effects 0.000 description 10
- 239000000049 pigment Substances 0.000 description 7
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 description 6
- 239000002800 charge carrier Substances 0.000 description 6
- 239000000463 material Substances 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 230000008901 benefit Effects 0.000 description 3
- 239000011230 binding agent Substances 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 229920003227 poly(N-vinyl carbazole) Polymers 0.000 description 3
- 239000011347 resin Substances 0.000 description 3
- 229920005989 resin Polymers 0.000 description 3
- 239000004065 semiconductor Substances 0.000 description 3
- 238000012546 transfer Methods 0.000 description 3
- 239000011787 zinc oxide Substances 0.000 description 3
- BUGBHKTXTAQXES-UHFFFAOYSA-N Selenium Chemical compound [Se] BUGBHKTXTAQXES-UHFFFAOYSA-N 0.000 description 2
- WYURNTSHIVDZCO-UHFFFAOYSA-N Tetrahydrofuran Chemical compound C1CCOC1 WYURNTSHIVDZCO-UHFFFAOYSA-N 0.000 description 2
- 150000001412 amines Chemical class 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 239000006185 dispersion Substances 0.000 description 2
- 150000004866 oxadiazoles Chemical class 0.000 description 2
- 125000002080 perylenyl group Chemical group C1(=CC=C2C=CC=C3C4=CC=CC5=CC=CC(C1=C23)=C45)* 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 150000003219 pyrazolines Chemical class 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 229910052711 selenium Inorganic materials 0.000 description 2
- 239000011669 selenium Substances 0.000 description 2
- 239000002904 solvent Substances 0.000 description 2
- VHQGURIJMFPBKS-UHFFFAOYSA-N 2,4,7-trinitrofluoren-9-one Chemical compound [O-][N+](=O)C1=CC([N+]([O-])=O)=C2C3=CC=C([N+](=O)[O-])C=C3C(=O)C2=C1 VHQGURIJMFPBKS-UHFFFAOYSA-N 0.000 description 1
- UZGVMZRBRRYLIP-UHFFFAOYSA-N 4-[5-[4-(diethylamino)phenyl]-1,3,4-oxadiazol-2-yl]-n,n-diethylaniline Chemical compound C1=CC(N(CC)CC)=CC=C1C1=NN=C(C=2C=CC(=CC=2)N(CC)CC)O1 UZGVMZRBRRYLIP-UHFFFAOYSA-N 0.000 description 1
- PIICEJLVQHRZGT-UHFFFAOYSA-N Ethylenediamine Chemical compound NCCN PIICEJLVQHRZGT-UHFFFAOYSA-N 0.000 description 1
- 230000002745 absorbent Effects 0.000 description 1
- 239000002250 absorbent Substances 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 125000004106 butoxy group Chemical group [*]OC([H])([H])C([H])([H])C(C([H])([H])[H])([H])[H] 0.000 description 1
- 125000000484 butyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 229910001916 chloryl Inorganic materials 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 239000002612 dispersion medium Substances 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 125000001301 ethoxy group Chemical group [H]C([H])([H])C([H])([H])O* 0.000 description 1
- 125000001495 ethyl group Chemical group [H]C([H])([H])C([H])([H])* 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 230000003472 neutralizing effect Effects 0.000 description 1
- 239000012860 organic pigment Substances 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- FILUFGAZMJGNEN-UHFFFAOYSA-N pent-1-en-3-yne Chemical group CC#CC=C FILUFGAZMJGNEN-UHFFFAOYSA-N 0.000 description 1
- 125000002572 propoxy group Chemical group [*]OC([H])([H])C(C([H])([H])[H])([H])[H] 0.000 description 1
- 125000001436 propyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 230000003595 spectral effect Effects 0.000 description 1
- 125000001424 substituent group Chemical group 0.000 description 1
- YLQBMQCUIZJEEH-UHFFFAOYSA-N tetrahydrofuran Natural products C=1C=COC=1 YLQBMQCUIZJEEH-UHFFFAOYSA-N 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
- ODHXBMXNKOYIBV-UHFFFAOYSA-N triphenylamine Chemical compound C1=CC=CC=C1N(C=1C=CC=CC=1)C1=CC=CC=C1 ODHXBMXNKOYIBV-UHFFFAOYSA-N 0.000 description 1
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
- G03G5/06—Photoconductive layers; Charge-generation layers or charge-transporting layers; Additives therefor; Binders therefor characterised by the photoconductive material being organic
- G03G5/0664—Dyes
- G03G5/0675—Azo dyes
- G03G5/0687—Trisazo dyes
- G03G5/0688—Trisazo dyes containing hetero rings
-
- 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
- G03G5/06—Photoconductive layers; Charge-generation layers or charge-transporting layers; Additives therefor; Binders therefor characterised by the photoconductive material being organic
- G03G5/0601—Acyclic or carbocyclic compounds
- G03G5/0612—Acyclic or carbocyclic compounds containing nitrogen
- G03G5/0614—Amines
- G03G5/06142—Amines arylamine
- G03G5/06144—Amines arylamine diamine
- G03G5/061443—Amines arylamine diamine benzidine
Description
技術分野
本発明は電子写真用の感光体に関し、更に詳し
くは、光を照射したとき電荷担体を発生する物質
（以下、電荷発生物質と言う。）を含む層（以下、
電荷発生層と言う。）と電荷発生層が発生した電
荷担体を受け入れ、これを搬送する物質（以下、
電荷搬送物質と言う。）を含む層（以下、電荷搬
送層と言う。）からなる積層型の電子写真感光体
に関する。
従来技術
従来、電子写真用の感光体として、無機物系の
ものではセレン及びその合金を用いたもの、ある
いは色素増感した酸化亜鉛を結着樹脂中に分散し
た感光体などがあり、また有機物系のものでは、
２，４，７−トリニトロ−９−フルオレノン（以
下、TNFと言う。）とポリ−Ｎ−ビニルカルバゾ
ール（以下、PVKと言う。）との電荷移動錯体を
用いたものなどが代表的なものである。しかし、
これらの感光体は多くの長所を持つていると同時
に、そもざまな欠点を持つていることも事実であ
る。例えば、現在広く用いられているセレン感光
体は製造する条件がむずかしく、製造コストが高
かつたり、可撓性がないためにベルト状に加工す
ることがむずかしく、また熱や機械的な衝撃に鋭
敏なため取扱いに注意を要する。また酸化亜鉛感
光体は安価な酸化亜鉛を用いて支持体への塗布で
製造することが出来るためコストは低いが、一般
に感度が低かつたり、表面の平滑性、硬度、引つ
張り強度、耐摩擦性などの機械的な欠点があり、
通常反復して使用する普通複写機用の感光体とし
ては耐久性などに問題が多い。また、TNFと
PVKの電荷移動錯体を用いた感光体は感度が低
く、高速複写機用の感光体としては不適当であ
る。
近年、これらの感光体は欠点を排除するために
広範な研究が進められ、特に有機物系のさまざま
な感光体が提案されている。中でも有機顔料の薄
膜を導電性支持体状に形成し、（電荷発生層）、こ
の上に電荷搬送物質を主体とする層（電荷搬送
層）を形成した積層型の感光体が従来の有機物系
の感光体に比べ、一般に感度が高く帯電性が安定
していることなどの点から普通紙複写機用の感光
体として注目されており、一部実用に供されてい
るものがある。
この種の従来の積層感光体として(1)電荷発生層
にピリレン誘導体を用い、電荷搬送層にオキサジ
アゾール誘導体を用いたもの（米国特許第
38718820号広報参照）、(2)電荷発生層として、有
機アミンを溶媒として用いて、クロルダイアンプ
ルーを塗布したものを用い、電荷搬送層にピラゾ
リン誘導体を用いたもの（特開昭52−55643号公
報及び特開昭52−72231号公報参照）、(3)電荷発生
層として、トリフエニルアミン系トリスアゾ顔料
（特開昭53−132347号公報参照）を例えばテトラ
ヒドロフランなどの分散媒に分散した分散液を塗
布したものを用い、電荷搬送層に２，５−ビス
（４−ジエチルアミノフエニル）−１，３，４−オ
キサジアゾールあるいはTNFを用いたものなど
が公知である。
しかしながら、この種の積層型の感光体におい
ても、従来のものは多くの長所を持つていると同
時に、さまざまな欠点を持つていることも事実で
ある。
例えば先に(1)で示したペリレン誘導体とオキサ
ジアゾール誘導体を用いる感光体は実用上は問題
がないとしても、より高速な複写機等用としては
感度が低い。またこの感光体の分光感度を支配す
る電荷発生物質であるペリレン誘導体は、可視域
全般にわたつては吸収がないためカラー複写機用
の感光体としては不適当であるなどの欠点を有し
ている。
また(2)で示したクロリルダイアンブルーとピラ
ゾリン誘導体を用いた感光体は本発明者らの実験
ではその感度は比較的良いものの、電荷発生層を
形成するための塗布溶剤として、一般的に取扱い
にくい有機アミン（例えばエチレンジアミン）を
用いる必要があり、感光体作成上の欠点が多い。
また(3)に示した感光体は本発明者らが提案した
もので、これらの感光体は電荷発生層を形成する
方法として、顔料の微細粒子を有機溶剤に分散し
た顔料分散液（必要により結着樹脂を加えてもよ
い）を支持体上に塗布することによつて、容易に
形成出来る利点はあるが若干感度が低いため、高
速複写機用の感光体としては不充分である。
一方、近年レーザー・プリンター用感光体の要
求も高まつており、特に半導体レーザーの波長域
における高感度感光体の開発が望まれているが、
上述の感光体はこれら半導体レーザーに対し、極
めて感度が低く、実用に供しえないのが実状であ
る。
この種の積層型の感光体における静電潜像形成
のメカニズムは、感光体を帯電したのち光照射す
ると、光は透明な電荷搬送層を透過し、電荷発生
層中の電荷発生物質により吸収され、光を吸収し
た電荷発生物質は電荷担体を発生し、この電荷担
体は電荷搬送層に注入され、帯電によつて生じて
いる電界に従つて電荷搬送層中を移動し、感光体
表面の電荷を中和することにより静電潜像を形成
すると考えられている。従つて、この種の感光体
に用いられる電荷発生物質としては、画像形成の
ための光の照射に際して、効率よく電荷担体を発
生することが要求される。
一方、電荷搬送物質は用いる光に体して透明で
あり、所望の帯電電位を保つことができ、光照射
した場合、電荷発生物質が発生した電荷担体をす
みやかに搬送する能力を有することが要求され
る。
目 的
本発明者らは以上の点に鑑み高感度で、しかも
可視域全般及び半導体レーザーの波長域にわたつ
てほぼフラツトな感度を示し、またその製造も容
易な積層型感光体を開発することを目的として、
数多くの電荷発生物質と電荷搬送物質について鋭
意研究を重ねた結果、電荷発生物質としては後記
一般式(1)で表わされるトリスアゾ顔料において
も、置換基Ｒの種類及び位置の違いによつて特性
が大きく異なり、Ｒが下記に示したものであるト
リスアゾ顔料が特に優れた特性を有しており、ま
た、電荷発生物質と電荷搬送物質との組合わせに
よつて、その感光体特性が非常に異なることを見
出し、それらの特定の組合わせによつて、優れた
感光特性を有する感光体を得、上記の目的を達成
した。
本発明の目的は極めて電荷担体発生能に優れた
電荷発生物質を減毛む電荷発生層と該電荷発生物
質と共に用いる場合に優れた性能を示す電荷搬送
物質を含む電荷搬送層とを積層することにより、
暗所に於いて十分な帯電電位を与え、露光時、表
面電位が速やかに散逸することにより、帯電、露
光、現像、転写、クリーニングをくり返す複写プ
ロセスにおいて、これらの工程を繰り返しても何
らその特性が変化しない積層型電子写真感光体を
提供することにある。
構 成
本発明の電子写真感光体は導電性支持体上に電
荷発生層及び電荷搬送層を設けた積層型の電子写
真感光体において、電荷発生層が一般式(1)
（但しＲは
TECHNICAL FIELD The present invention relates to a photoreceptor for electrophotography, and more specifically, a layer containing a substance (hereinafter referred to as a charge-generating substance) that generates charge carriers when irradiated with light (hereinafter referred to as a charge-generating substance).
This is called the charge generation layer. ) and the charge generation layer accepts the generated charge carriers and transports them (hereinafter referred to as
It is called a charge transport material. ) (hereinafter referred to as a charge transport layer). Prior Art Conventionally, there have been inorganic photoreceptors for electrophotography, such as those using selenium and its alloys, or photoreceptors with dye-sensitized zinc oxide dispersed in a binder resin, and organic photoreceptors. In the one of
A typical example is one using a charge transfer complex of 2,4,7-trinitro-9-fluorenone (hereinafter referred to as TNF) and poly-N-vinylcarbazole (hereinafter referred to as PVK). be. but,
Although these photoreceptors have many advantages, it is also true that they also have various disadvantages. For example, the currently widely used selenium photoreceptor has difficult manufacturing conditions and high manufacturing costs, is difficult to process into a belt shape due to its lack of flexibility, and is sensitive to heat and mechanical shock. Therefore, care must be taken when handling it. Zinc oxide photoreceptors are low in cost because they can be manufactured by applying inexpensive zinc oxide to a support, but they generally have low sensitivity, poor surface smoothness, hardness, tensile strength, and durability. It has mechanical drawbacks such as friction,
As a photoreceptor for an ordinary copying machine, which is normally used repeatedly, there are many problems such as durability. Also, TNF and
Photoreceptors using PVK charge transfer complexes have low sensitivity and are unsuitable as photoreceptors for high-speed copying machines. In recent years, extensive research has been conducted to eliminate the drawbacks of these photoreceptors, and in particular, various organic photoreceptors have been proposed. Among them, a laminated type photoreceptor in which a thin film of an organic pigment is formed on a conductive support (charge generation layer), and a layer mainly composed of a charge transport substance (charge transport layer) is formed on top of this is the conventional organic-based photoreceptor. Compared to conventional photoconductors, these photoconductors are attracting attention as photoconductors for plain paper copying machines because they generally have higher sensitivity and stable charging properties, and some of them are in practical use. Conventional laminated photoreceptors of this type include (1) one in which a pyrylene derivative is used in the charge generation layer and an oxadiazole derivative is used in the charge transport layer (U.S. Patent No.
38718820), (2) A charge generation layer coated with chlordiane blue using an organic amine as a solvent, and a charge transport layer using a pyrazoline derivative (Japanese Patent Laid-Open No. 52-55643) (3) As a charge generation layer, a dispersion of a triphenylamine trisazo pigment (see Japanese Patent Application Laid-open No. 53-132347) in a dispersion medium such as tetrahydrofuran. It is well known to use a charge transport layer coated with 2,5-bis(4-diethylaminophenyl)-1,3,4-oxadiazole or TNF. However, although conventional photoreceptors of this type have many advantages, they also have various drawbacks. For example, although the photoreceptor using the perylene derivative and oxadiazole derivative shown in (1) above may have no practical problems, it has low sensitivity for use in higher-speed copying machines and the like. Additionally, perylene derivatives, which are the charge-generating substances that control the spectral sensitivity of this photoreceptor, have the disadvantage of not being absorbent over the entire visible range, making them unsuitable as photoreceptors for color copying machines. There is. In addition, although the photoreceptor using chloryl diane blue and pyrazoline derivatives shown in (2) has relatively good sensitivity in our experiments, it is generally not used as a coating solvent for forming a charge generation layer. It is necessary to use organic amines (eg, ethylenediamine) that are difficult to handle, and there are many drawbacks in producing photoreceptors. In addition, the photoreceptor shown in (3) was proposed by the present inventors, and these photoreceptors use a pigment dispersion (if necessary) in which fine pigment particles are dispersed in an organic solvent as a method of forming a charge generation layer. Although it has the advantage of being easily formed by coating a support with a binder resin (a binder resin may be added thereto), the sensitivity is somewhat low, making it unsatisfactory as a photoreceptor for high-speed copying machines. On the other hand, the demand for photoreceptors for laser printers has increased in recent years, and the development of highly sensitive photoreceptors in the wavelength range of semiconductor lasers is particularly desired.
The photoreceptor described above has extremely low sensitivity to these semiconductor lasers and cannot be put to practical use. The mechanism of electrostatic latent image formation in this type of laminated photoreceptor is that when the photoreceptor is charged and then irradiated with light, the light passes through the transparent charge transport layer and is absorbed by the charge generation substance in the charge generation layer. , the charge-generating substance that absorbs light generates charge carriers, and these charge carriers are injected into the charge transport layer and move in the charge transport layer according to the electric field generated by charging, increasing the charge on the surface of the photoreceptor. It is thought that an electrostatic latent image is formed by neutralizing the electrostatic latent image. Therefore, the charge-generating material used in this type of photoreceptor is required to efficiently generate charge carriers when irradiated with light for image formation. On the other hand, the charge transport material is required to be transparent to the light used, to be able to maintain a desired charging potential, and to have the ability to promptly transport the charge carriers generated by the charge generation material when irradiated with light. be done. Purpose In view of the above points, the inventors of the present invention have developed a laminated photoreceptor that has high sensitivity, exhibits almost flat sensitivity over the entire visible range and the wavelength range of semiconductor lasers, and is easy to manufacture. For the purpose of
As a result of intensive research on a large number of charge-generating substances and charge-transporting substances, we have found that even in the trisazo pigment represented by the general formula (1) below, characteristics differ depending on the type and position of the substituent R. Trisazo pigments with R shown below have particularly excellent properties, and their photoreceptor properties vary greatly depending on the combination of charge-generating and charge-transporting substances. By using a specific combination thereof, a photoreceptor having excellent photosensitive properties was obtained, and the above object was achieved. The object of the present invention is to laminate a charge-generating layer containing a charge-generating substance with extremely excellent charge carrier-generating ability and a charge-transporting layer containing a charge-transporting substance that exhibits excellent performance when used together with the charge-generating substance. According to
By applying a sufficient charging potential in a dark place and quickly dissipating the surface potential during exposure, no damage occurs even if these steps are repeated in the copying process that repeats charging, exposure, development, transfer, and cleaning. An object of the present invention is to provide a laminated electrophotographic photoreceptor whose characteristics do not change. Structure The electrophotographic photoreceptor of the present invention is a laminated electrophotographic photoreceptor in which a charge generation layer and a charge transport layer are provided on a conductive support, and the charge generation layer has the general formula (1). (However, R is
【式】【formula】
【式】【formula】
【式】【formula】
【式】【formula】
【式】を表わ
す。）
で示されるトリスアゾ顔料を含み、且つ電荷搬送
層が一般式(2)
（但しR1は水素原子、塩素原子、メチル基又は
メトキシ基を表わし、R2、R3は同一でも異なつ
ていてもよく、水素原子、塩素原子、低級アルキ
ル塩又は低級アルキコキシ基を表わす。で示され
るベンジジン化合物を含むことを特徴とするもの
である。
ここで、一般式(2)のR2及びR3におけるアルキ
ル基の具体例としてはメチル基、エチル基、プロ
ピル基及びブチル基が、またアルコキシ基として
はメトキシ基、エトキシ基、プロポキシ基及びブ
トキシ基が挙げられる。
以上のような一般式(2)で示されるベンジジン化
合物は公知の物質で、例えば特開昭55−79450号
に記載された方法で製造される。
一方、本発明の電荷発生層に用いられる一般式
(1)で示されるトリスアゾ顔料も公知の物質で、例
えば特開昭57−195767号等に記載された方法で製
造される。
次に以上のようにして得られる、一般式(1)で示
されるトリスアゾ顔料の具体例及び一般式(2)で示
されるベンジジン化合物の具体例を夫々表−１及
び表−２に示す。Represents [formula]. ), and the charge transport layer has the general formula (2). (However, R 1 represents a hydrogen atom, a chlorine atom, a methyl group, or a methoxy group, and R 2 and R 3 may be the same or different and represent a hydrogen atom, a chlorine atom, a lower alkyl salt, or a lower alkoxy group. It is characterized by containing a benzidine compound represented by: Here, specific examples of the alkyl group in R 2 and R 3 of general formula (2) include a methyl group, an ethyl group, a propyl group, and a butyl group. , and examples of the alkoxy group include methoxy group, ethoxy group, propoxy group and butoxy group. The benzidine compound represented by the general formula (2) above is a known substance, for example, as described in JP-A-55-79450. The general formula used for the charge generation layer of the present invention is
The trisazo pigment represented by (1) is also a known substance, and is produced, for example, by the method described in JP-A-57-195767. Next, specific examples of the trisazo pigment represented by the general formula (1) and the benzidine compound represented by the general formula (2) obtained as described above are shown in Tables 1 and 2, respectively.
【表】【table】
【表】【table】
【表】【table】
Claims (1)
を設けた積層型の電子写真感光体において、電荷
発生層が一般式(1) （但し、Ｒは【式】 【式】【式】 【式】【式】 【式】【式】 【式】【式】 【式】 を表わす。） で示されるトリスアゾ顔料を含み、且つ電荷搬送
層が一般式(2) （但しR1は水素原子、塩素原子、メチル基又は
メトキシ基を表わし、R2、R3は同一でも異なつ
ていてもよく、水素原子、塩素原子、低級アルキ
ル基又は低級アルコキシ基を表わす。） で示されるベンジジン化合物を含むことを特徴と
する電子写真感光体。[Scope of Claims] 1. In a laminated electrophotographic photoreceptor in which a charge generation layer and a charge transport layer are provided on a conductive support, the charge generation layer is represented by the general formula (1). (However, R represents [Formula] [Formula] [Formula] [Formula] [Formula] [Formula] [Formula] [Formula] [Formula] [Formula]). The layer is general formula (2) (However, R 1 represents a hydrogen atom, a chlorine atom, a methyl group, or a methoxy group, and R 2 and R 3 may be the same or different and represent a hydrogen atom, a chlorine atom, a lower alkyl group, or a lower alkoxy group. ) An electrophotographic photoreceptor comprising a benzidine compound represented by:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59246918A JPS61124949A (en) | 1984-11-21 | 1984-11-21 | Electrophotographic sensitive body |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59246918A JPS61124949A (en) | 1984-11-21 | 1984-11-21 | Electrophotographic sensitive body |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS61124949A JPS61124949A (en) | 1986-06-12 |
| JPH0543108B2 true JPH0543108B2 (en) | 1993-06-30 |
Family
ID=17155686
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP59246918A Granted JPS61124949A (en) | 1984-11-21 | 1984-11-21 | Electrophotographic sensitive body |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS61124949A (en) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01257965A (en) * | 1988-04-08 | 1989-10-16 | Fuji Xerox Co Ltd | Electrophotographic sensitive body |
| JP2518974B2 (en) * | 1991-03-29 | 1996-07-31 | 三田工業株式会社 | Benzidine derivative and photoconductor using the same |
| DE69929067D1 (en) | 1998-07-09 | 2006-01-26 | Chisso Corp | SILOL DERIVATIVES AND ORGANIC ELECTROLUMINESCENE ELEMENT CONTAINING THEM |
| US6902832B2 (en) | 2000-07-07 | 2005-06-07 | Chisso Corporation | Charge-transporting material containing diazapentacene derivative, luminescent material, and organic electroluminescent element employing these |
| US6617053B2 (en) | 2000-08-04 | 2003-09-09 | Chisso Corporation | Organic electroluminescent device containing dithiafulvene derivative |
| DE60100187T2 (en) | 2000-09-07 | 2004-04-01 | Chisso Corp. | Organic electroluminescent device with a dipyridylthiophene derivative |
| JP4175099B2 (en) | 2002-11-29 | 2008-11-05 | 富士ゼロックス株式会社 | Optical writable display medium and display device |
| JP4841271B2 (en) * | 2006-03-08 | 2011-12-21 | 日東工業株式会社 | Joint structure of heater and bimetal |
-
1984
- 1984-11-21 JP JP59246918A patent/JPS61124949A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS61124949A (en) | 1986-06-12 |
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