JPS63116156A - Laminated photosensitive body - Google Patents
Laminated photosensitive bodyInfo
- Publication number
- JPS63116156A JPS63116156A JP26348786A JP26348786A JPS63116156A JP S63116156 A JPS63116156 A JP S63116156A JP 26348786 A JP26348786 A JP 26348786A JP 26348786 A JP26348786 A JP 26348786A JP S63116156 A JPS63116156 A JP S63116156A
- Authority
- JP
- Japan
- Prior art keywords
- resin
- charge generation
- polystyrene
- charge generating
- generation layer
- 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 27
- 239000011347 resin Substances 0.000 claims abstract description 27
- 239000000758 substrate Substances 0.000 claims abstract description 12
- 239000006185 dispersion Substances 0.000 claims abstract description 11
- 239000011230 binding agent Substances 0.000 claims abstract description 10
- 108091008695 photoreceptors Proteins 0.000 claims description 26
- 229920005990 polystyrene resin Polymers 0.000 claims description 10
- 239000012860 organic pigment Substances 0.000 claims description 3
- 239000000049 pigment Substances 0.000 abstract description 15
- 239000011248 coating agent Substances 0.000 abstract description 13
- 238000000576 coating method Methods 0.000 abstract description 13
- 239000004793 Polystyrene Substances 0.000 abstract description 6
- 229920002223 polystyrene Polymers 0.000 abstract description 6
- 239000007788 liquid Substances 0.000 abstract description 5
- 238000009736 wetting Methods 0.000 abstract description 2
- 238000003475 lamination Methods 0.000 abstract 1
- 239000000463 material Substances 0.000 description 10
- WYURNTSHIVDZCO-UHFFFAOYSA-N Tetrahydrofuran Chemical compound C1CCOC1 WYURNTSHIVDZCO-UHFFFAOYSA-N 0.000 description 8
- 230000000052 comparative effect Effects 0.000 description 7
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 4
- 229910052782 aluminium Inorganic materials 0.000 description 4
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 4
- 229910052802 copper Inorganic materials 0.000 description 4
- 239000010949 copper Substances 0.000 description 4
- IEQIEDJGQAUEQZ-UHFFFAOYSA-N phthalocyanine Chemical compound N1C(N=C2C3=CC=CC=C3C(N=C3C4=CC=CC=C4C(=N4)N3)=N2)=C(C=CC=C2)C2=C1N=C1C2=CC=CC=C2C4=N1 IEQIEDJGQAUEQZ-UHFFFAOYSA-N 0.000 description 4
- 229920002037 poly(vinyl butyral) polymer Polymers 0.000 description 4
- 229920005668 polycarbonate resin Polymers 0.000 description 4
- 239000004431 polycarbonate resin Substances 0.000 description 4
- 239000000243 solution Substances 0.000 description 4
- YLQBMQCUIZJEEH-UHFFFAOYSA-N tetrahydrofuran Natural products C=1C=COC=1 YLQBMQCUIZJEEH-UHFFFAOYSA-N 0.000 description 4
- 238000001035 drying Methods 0.000 description 3
- RAXXELZNTBOGNW-UHFFFAOYSA-N imidazole Natural products C1=CNC=N1 RAXXELZNTBOGNW-UHFFFAOYSA-N 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 239000002904 solvent Substances 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- AZQWKYJCGOJGHM-UHFFFAOYSA-N 1,4-benzoquinone Chemical compound O=C1C=CC(=O)C=C1 AZQWKYJCGOJGHM-UHFFFAOYSA-N 0.000 description 2
- UJOBWOGCFQCDNV-UHFFFAOYSA-N 9H-carbazole Chemical compound C1=CC=C2C3=CC=CC=C3NC2=C1 UJOBWOGCFQCDNV-UHFFFAOYSA-N 0.000 description 2
- 230000005971 DNA damage repair Effects 0.000 description 2
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 description 2
- JHIVVAPYMSGYDF-UHFFFAOYSA-N cyclohexanone Chemical compound O=C1CCCCC1 JHIVVAPYMSGYDF-UHFFFAOYSA-N 0.000 description 2
- RBTKNAXYKSUFRK-UHFFFAOYSA-N heliogen blue Chemical compound [Cu].[N-]1C2=C(C=CC=C3)C3=C1N=C([N-]1)C3=CC=CC=C3C1=NC([N-]1)=C(C=CC=C3)C3=C1N=C([N-]1)C3=CC=CC=C3C1=N2 RBTKNAXYKSUFRK-UHFFFAOYSA-N 0.000 description 2
- 230000014759 maintenance of location Effects 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 229920000728 polyester Polymers 0.000 description 2
- 229920001225 polyester resin Polymers 0.000 description 2
- 239000004645 polyester resin Substances 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 239000004576 sand Substances 0.000 description 2
- 230000035945 sensitivity Effects 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- FKNIDKXOANSRCS-UHFFFAOYSA-N 2,3,4-trinitrofluoren-1-one Chemical compound C1=CC=C2C3=C([N+](=O)[O-])C([N+]([O-])=O)=C([N+]([O-])=O)C(=O)C3=CC2=C1 FKNIDKXOANSRCS-UHFFFAOYSA-N 0.000 description 1
- WUPHOULIZUERAE-UHFFFAOYSA-N 3-(oxolan-2-yl)propanoic acid Chemical compound OC(=O)CCC1CCCO1 WUPHOULIZUERAE-UHFFFAOYSA-N 0.000 description 1
- 102000002706 Discoidin Domain Receptors Human genes 0.000 description 1
- 108010043648 Discoidin Domain Receptors Proteins 0.000 description 1
- 239000004640 Melamine resin Substances 0.000 description 1
- 229920000877 Melamine resin Polymers 0.000 description 1
- NRCMAYZCPIVABH-UHFFFAOYSA-N Quinacridone Chemical compound N1C2=CC=CC=C2C(=O)C2=C1C=C1C(=O)C3=CC=CC=C3NC1=C2 NRCMAYZCPIVABH-UHFFFAOYSA-N 0.000 description 1
- BUGBHKTXTAQXES-UHFFFAOYSA-N Selenium Chemical compound [Se] BUGBHKTXTAQXES-UHFFFAOYSA-N 0.000 description 1
- 241000519995 Stachys sylvatica Species 0.000 description 1
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 229910052980 cadmium sulfide Inorganic materials 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 125000000664 diazo group Chemical group [N-]=[N+]=[*] 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 150000007857 hydrazones Chemical class 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- WCPAKWJPBJAGKN-UHFFFAOYSA-N oxadiazole Chemical compound C1=CON=N1 WCPAKWJPBJAGKN-UHFFFAOYSA-N 0.000 description 1
- 125000002080 perylenyl group Chemical group C1(=CC=C2C=CC=C3C4=CC=CC5=CC=CC(C1=C23)=C45)* 0.000 description 1
- CSHWQDPOILHKBI-UHFFFAOYSA-N peryrene Natural products C1=CC(C2=CC=CC=3C2=C2C=CC=3)=C3C2=CC=CC3=C1 CSHWQDPOILHKBI-UHFFFAOYSA-N 0.000 description 1
- 229920000515 polycarbonate Polymers 0.000 description 1
- 239000004417 polycarbonate Substances 0.000 description 1
- 125000003367 polycyclic group Chemical group 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 229920000193 polymethacrylate Polymers 0.000 description 1
- DNXIASIHZYFFRO-UHFFFAOYSA-N pyrazoline Chemical compound C1CN=NC1 DNXIASIHZYFFRO-UHFFFAOYSA-N 0.000 description 1
- 239000011669 selenium Substances 0.000 description 1
- 229910052711 selenium Inorganic materials 0.000 description 1
- 229920002050 silicone resin Polymers 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 125000005504 styryl group Chemical group 0.000 description 1
- QAOWNCQODCNURD-UHFFFAOYSA-N sulfuric acid Substances OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 1
- NLDYACGHTUPAQU-UHFFFAOYSA-N tetracyanoethylene Chemical group N#CC(C#N)=C(C#N)C#N NLDYACGHTUPAQU-UHFFFAOYSA-N 0.000 description 1
- PCCVSPMFGIFTHU-UHFFFAOYSA-N tetracyanoquinodimethane Chemical compound N#CC(C#N)=C1C=CC(=C(C#N)C#N)C=C1 PCCVSPMFGIFTHU-UHFFFAOYSA-N 0.000 description 1
- 229920002803 thermoplastic polyurethane Polymers 0.000 description 1
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
- AAAQKTZKLRYKHR-UHFFFAOYSA-N triphenylmethane Chemical compound C1=CC=CC=C1C(C=1C=CC=CC=1)C1=CC=CC=C1 AAAQKTZKLRYKHR-UHFFFAOYSA-N 0.000 description 1
- 239000011787 zinc oxide Substances 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
- G03G5/05—Organic bonding materials; Methods for coating a substrate with a photoconductive layer; Inert supplements for use in photoconductive layers
- G03G5/0528—Macromolecular bonding materials
- G03G5/0532—Macromolecular bonding materials obtained by reactions only involving carbon-to-carbon unsatured bonds
- G03G5/0535—Polyolefins; Polystyrenes; Waxes
Abstract
Description
【発明の詳細な説明】
汲粟上Δ秤叩分互
本発明は、晧板上に少なくとも電荷発生層と電荷輸送層
を設けた積層型感光体に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a laminated photoreceptor in which at least a charge generation layer and a charge transport layer are provided on a plate.
従来の技術
従来、電子写真法に使用される感光体の感光層を形成す
る感光材料としては、セレン、酸化亜鉛、酸化チタン、
硫化カドミウムなどの無機系光導電性材料が用いられて
きた。しかし、これらは数多くの欠点を有しており、一
般に毒性が強いものが多く、また、耐湿性等にも問題が
あった。Conventional technology Conventionally, photosensitive materials forming the photosensitive layer of photoreceptors used in electrophotography include selenium, zinc oxide, titanium oxide,
Inorganic photoconductive materials such as cadmium sulfide have been used. However, these have many drawbacks, and many of them are generally highly toxic, and there are also problems with moisture resistance.
一方、有機系光導電性材料を感光体に用いた場合、成膜
性、軽量性、価格の点で優れているが、未だ十分な感度
、耐久性および環境変化による安定性の点で問題があっ
た。On the other hand, when organic photoconductive materials are used for photoreceptors, they are excellent in terms of film formability, light weight, and cost, but there are still problems in terms of sufficient sensitivity, durability, and stability due to environmental changes. there were.
近年、電荷の発生と輸送という機能を分離した積層型感
光体が提案され、有機系光導電性材料を使用した従来の
感光体の欠点が大幅に改良された結果、有機感光体が実
用化され、急速な進歩を遂げつつある。In recent years, a laminated photoreceptor that separates the functions of charge generation and transport has been proposed, and as a result, the drawbacks of conventional photoreceptors using organic photoconductive materials have been greatly improved, and as a result, organic photoreceptors have been put into practical use. , is making rapid progress.
積層型感光体は、金属アルミニウム、銅等の導電性基板
上に電荷発生層と電荷輸送層を順次積層した構成を有す
る。A laminated photoreceptor has a structure in which a charge generation layer and a charge transport layer are sequentially laminated on a conductive substrate made of metal aluminum, copper, or the like.
これらの積層型感光体は、電荷保持性、高感度、繰り返
し安定性、耐絶縁破壊性、耐摩耗性、耐久性、耐湿性、
転写性、クリーニング性、保存安定性などの基本的な条
件を満足することが要求される。These laminated photoreceptors have charge retention, high sensitivity, repetition stability, dielectric breakdown resistance, abrasion resistance, durability, moisture resistance,
It is required to satisfy basic conditions such as transferability, cleaning performance, and storage stability.
さらに、積層型感光体はレーザープリンター用としても
使用され、反転現像時での高い画像信頼性、繰り返し安
定性が要求されるようになった。Furthermore, laminated photoreceptors are also used for laser printers, and high image reliability and repeatability during reversal development are now required.
発明が解決しようとする問題点
従来の積層型感光体において、特に電荷発生１腎が樹脂
に顔料を分散させた分散型の場合には、基板との接着性
や塗工性、基板から電荷輸送層への電荷注入など色々な
問題があった。Problems to be Solved by the Invention In conventional laminated type photoreceptors, especially when the charge generation unit is a dispersed type in which pigment is dispersed in resin, there are problems with adhesion with the substrate, coatability, and charge transport from the substrate. There were various problems such as charge injection into the layer.
電荷発生材料の結着剤樹脂に要求される特性としては、
顔料分散安定性、保存安定性、塗工性、導電性基板およ
び電荷輸送層との接着性が良好であることが必要である
。従来、電荷発生材料の結着剤樹脂としてはポリビニル
ブチラールやポリエステル等の樹脂が用いられてきたが
、フタロシアニン等の微粉になると分散安定性か悪かっ
たり、電荷保持能が低くなったりした。The properties required for the binder resin of the charge generating material are as follows:
It is necessary to have good pigment dispersion stability, storage stability, coatability, and adhesion to the conductive substrate and charge transport layer. Conventionally, resins such as polyvinyl butyral and polyester have been used as binder resins for charge-generating materials, but when they become fine powders such as phthalocyanine, they have poor dispersion stability and low charge retention ability.
積層型感光体はレーザープリンタ用としても使用され、
反転現像時での高い画像信頼性、繰り返し安定性が要求
されるようになったが、従来の積層感光体において、特
に電荷発生層が樹脂に顔料を分散させた分散膜の場合に
は、基板との接着性や塗工性、樹脂中における均一分散
性に対して満足のいく材料がなかった。Laminated photoreceptors are also used for laser printers.
High image reliability and repeatability during reversal development are now required, but in conventional laminated photoreceptors, especially when the charge generation layer is a dispersion film in which pigment is dispersed in resin, There was no material that was satisfactory in terms of adhesion with the resin, coatability, and uniform dispersibility in the resin.
問題点を解決するための手段
本発明は、導電性基板上に少なくとも電荷発生層と電荷
輸送層を有する積層型感光体において、電荷発生層が有
機顔料の樹脂分散層であり、結着剤樹脂が分子ｆｆ１１
０，０００〜３００，０００”ｉ？あるポリスチレン樹
脂を有することを特徴とする。Means for Solving the Problems The present invention provides a laminated photoreceptor having at least a charge generation layer and a charge transport layer on a conductive substrate, in which the charge generation layer is a resin dispersion layer of an organic pigment, and a binder resin is used. is the molecule ff11
It is characterized by having a polystyrene resin of 0,000 to 300,000"i?
本発明に従い電荷発生層の結着剤樹脂に分子量１０．０
００〜３００，０００のポリスチレンを使用することに
より、分散安定性、保存安定性が向上し、画像品質が飛
躍的に向上する。According to the present invention, the binder resin of the charge generation layer has a molecular weight of 10.0.
By using polystyrene having a molecular weight of 0.00 to 300,000, dispersion stability and storage stability are improved, and image quality is dramatically improved.
本発明の電荷発生層に使用するポリスチレンの分子量は
、ｔ ｏ、ｏ ｏ ｏ〜３００，０００であり、好まし
くは２０，０００〜２００，０００である。The molecular weight of the polystyrene used in the charge generation layer of the present invention is from to,ooo to 300,000, preferably from 20,000 to 200,000.
分子量が小さいと、塗膜の凝集力が弱く、大きすぎると
基板とのぬれ不良のため付着力が弱くなるし、顔料の分
散性が悪くなり、複写画像に白斑点、たれすし等のノイ
ズが発生しやすい。なお、ポリスチレン樹脂は必要に応
じて、その特性を損なわない範囲内で他の樹脂等をブレ
ンド使用してもよい。その場合、結着剤樹脂の４０重量
％以内の量で使用する。If the molecular weight is small, the cohesive force of the coating film will be weak, and if it is too large, the adhesion will be weak due to poor wetting with the substrate, and the dispersibility of the pigment will be poor, resulting in noise such as white spots and dripping on the copied image. Likely to happen. Note that the polystyrene resin may be blended with other resins, etc., as necessary, within a range that does not impair its properties. In that case, it is used in an amount within 40% by weight of the binder resin.
本発明における結着剤樹脂の含有割合は電荷発生材料に
対して１：１０〜２：１が良く、特にｌ：■近辺が好ま
しい。また、電荷発生層の膜厚は、３μｍ以下が良く、
特に１μｍ以下が好ましい。In the present invention, the content ratio of the binder resin to the charge generating material is preferably 1:10 to 2:1, and particularly preferably around 1:■. Further, the thickness of the charge generation layer is preferably 3 μm or less;
In particular, the thickness is preferably 1 μm or less.
本発明に使用される電荷発生層に用いられる有機顔料と
しては、各種アゾ顔料、ペリレン系顔料、フタロンアニ
ン系顔料、多環キノン系顔料、インジコ系顔料、キナク
リドン系顔料などが挙げられる。Examples of the organic pigments used in the charge generation layer of the present invention include various azo pigments, perylene pigments, phthalonanine pigments, polycyclic quinone pigments, indico pigments, and quinacridone pigments.
電荷発生層は、結着剤樹脂を適切な溶剤を用いて溶解し
、これに上記の顔料を加え、ボールミル、振動ミル、サ
ンドミル、ロールミル等の方法で分散させた溶液を０．
１−１μｍに塗布することにより得られる。The charge generation layer is prepared by dissolving a binder resin using an appropriate solvent, adding the above pigment thereto, and dispersing the solution using a method such as a ball mill, vibration mill, sand mill, or roll mill.
It can be obtained by coating to a thickness of 1-1 μm.
本発明に用いられる溶剤としては、樹脂可溶性のものが
いずれも用いられろが、特に、シクロヘキサノン、Ｔ
ｔｌ Ｆが好適である。また、導電性基板としては、ア
ルミニウム、銅等の金属ドラム、シートあるいはこれら
のラミネート、蒸着物等が使用でき、必要に応じてこれ
らの導電性基板上に中間層、下引き層や表面保護層を設
けてもよい。As the solvent used in the present invention, any resin-soluble solvent can be used, but in particular, cyclohexanone, T
tlF is preferred. In addition, as the conductive substrate, a metal drum or sheet made of aluminum or copper, or a laminate or vapor deposited product of these materials can be used, and if necessary, an intermediate layer, an undercoat layer, or a surface protection layer may be applied on these conductive substrates. may be provided.
電荷発生の上に塗布される電荷輸送層は、ピラゾリン、
トリフェニルメタン、オキサジアゾール、カルバゾール
、ヒドラゾン、スチリル、イミダゾール等の誘導体から
成る電子供与性物質やトリニトロフルオレノン、テトラ
ニトロキサントン、テトラシアノエチレン、テトラシア
ノキノジメタン等の電子受容性など、電荷輸送性のある
物質を成膜性のある樹脂に溶解させて５〜３０μｍに塗
布することにより得られる。The charge transport layer applied over the charge generation is composed of pyrazoline,
Electron-donating substances such as derivatives such as triphenylmethane, oxadiazole, carbazole, hydrazone, styryl, and imidazole, and electron-accepting substances such as trinitrofluorenone, tetranitroxanthone, tetracyanoethylene, and tetracyanoquinodimethane, etc. It is obtained by dissolving a substance with transportability in a resin with film-forming properties and applying the solution to a thickness of 5 to 30 μm.
電荷輸送層に使用される結着剤樹脂としては、ポリエス
テル、ポリカーボネート、ポリメタクリル酸エステル、
ポリビニルブチラール、シリコン樹脂、エポキシ樹脂、
メラミン樹脂、ウレタン樹脂等が挙げられる。Binder resins used in the charge transport layer include polyester, polycarbonate, polymethacrylate,
Polyvinyl butyral, silicone resin, epoxy resin,
Examples include melamine resin and urethane resin.
以下実施例をあげて本発明を説明する。実施例中、特に
記載しない限り、「部」は総て「重量部」を示す。The present invention will be explained below with reference to Examples. In the examples, all "parts" indicate "parts by weight" unless otherwise specified.
実施例１
銅フタロシアニン５０部とテトラニトロ銅フタロシアニ
ン０．２部を９８％濃硫酸５００部に十分撹拌しながら
溶解させて、これを水５０００部にあけ、銅フタロシア
ニンとテトラニトロ銅フタロシアニンの光導電性材料組
成物を析出させた後、濾過、水洗し、減圧下１２０℃で
乾燥させた。Example 1 50 parts of copper phthalocyanine and 0.2 parts of copper tetranitro phthalocyanine were dissolved in 500 parts of 98% concentrated sulfuric acid with thorough stirring, and this was poured into 5000 parts of water to prepare a photoconductive material of copper phthalocyanine and copper tetranitro phthalocyanine. After the composition was precipitated, it was filtered, washed with water, and dried at 120° C. under reduced pressure.
得られた組成物１部を、分子量２００，０００のポリス
チレン樹脂およびテトラヒドロフラン５０部をボールミ
ルポットに入れて２４時間分散させ、感光塗液を得た。One part of the obtained composition was dispersed in a ball mill pot with a polystyrene resin having a molecular weight of 200,000 and 50 parts of tetrahydrofuran for 24 hours to obtain a photosensitive coating liquid.
これをアルミニウム基板上に塗布、乾燥し、厚さ０．５
μｍの電荷発生層を形成させた。この電荷発生層の上に
Ｃｔ＋＋Ｓ
を１０部、ポリカーボネート樹脂（パンライトに−１３
００，奇人化成（株）製）１０部をテトラヒドロフラン
１００部に溶解させた塗布液を乾燥後の膜厚が１５μｍ
になるように塗布して電荷輸送層を形成させ、電子写真
感光体を作製した。This was applied onto an aluminum substrate and dried to a thickness of 0.5
A charge generation layer of .mu.m was formed. On this charge generation layer, 10 parts of Ct++S and polycarbonate resin (-13
00, manufactured by Kijin Kasei Co., Ltd.) dissolved in 100 parts of tetrahydrofuran, the film thickness after drying is 15 μm.
An electrophotographic photoreceptor was prepared by coating the mixture to form a charge transport layer.
実施例２
電荷発生層に使用する樹脂を分子量１００，０００のポ
リスチレン樹脂にかえた以外は、実施例１と同様にして
感光体を作製した。Example 2 A photoreceptor was produced in the same manner as in Example 1, except that the resin used for the charge generation layer was changed to a polystyrene resin with a molecular weight of 100,000.
尖胤族生
無金属フタロシアニン（東洋インキ（株）製）１部、分
子ｆｉ５０，０００のポリスチレン樹脂１部およびシロ
クヘキサノン５０重量部をボールミルボットに入れて２
４時間分散し、感光塗液を得た。これをアルミニウム基
板上に塗布、乾燥し、厚さ０゜５μｍの電荷発生層を形
成させた。この電荷発生層の上に
を１０部、ポリカーボネート樹脂１０部をテトラヒドロ
フラン１００部に溶解させた塗布液を乾燥後の膜厚が１
５μｍになるように塗布して電荷輸送層を形成させ、電
子写真感光体を作製した。1 part of Chitanzoku raw metal-free phthalocyanine (manufactured by Toyo Ink Co., Ltd.), 1 part of polystyrene resin with a molecular fi of 50,000, and 50 parts by weight of siloxhexanone were placed in a ball mill bottle.
Dispersion was carried out for 4 hours to obtain a photosensitive coating liquid. This was applied onto an aluminum substrate and dried to form a charge generation layer with a thickness of 0.5 μm. A coating solution prepared by dissolving 10 parts of polycarbonate resin in 100 parts of tetrahydrofuran was applied on top of this charge generation layer to a film thickness of 1 after drying.
A charge transport layer was formed by coating to a thickness of 5 μm, and an electrophotographic photoreceptor was produced.
実施例４
実施例３において、電荷発生層に使用する樹脂を分子ｆ
ｉ３０，０００のポリスチレン樹脂０．７部、ブチラー
ル樹脂０．３部にすること以外は実施例３と全く同様に
して感光体を作製した。Example 4 In Example 3, the resin used for the charge generation layer was molecule f.
A photoreceptor was prepared in exactly the same manner as in Example 3 except that 0.7 part of polystyrene resin with i30,000 and 0.3 part of butyral resin were used.
実施例５
電荷発生層として下記一般式で表わされるビスアゾ顔料
１部、分子ｆｆ１４０，０００のポリスチレン樹脂０．
８部、ポリエステル樹脂０．２部とシロクヘキザノン９
０部をサンドグラインダーで分散処理した後、厚さ０，
５μｍの電荷発生層を形成させた。Example 5 As a charge generation layer, 1 part of a bisazo pigment represented by the following general formula and 0.0 parts of a polystyrene resin with a molecular ff of 140,000 were used.
8 parts, 0.2 parts of polyester resin and 9 parts of silochexanone
After dispersing 0 part with a sand grinder, the thickness was 0,
A charge generation layer of 5 μm was formed.
この電荷発生層の上に、
を１０部、ポリカーボネート樹脂１０部をテトラヒドロ
フラン１００部に溶解させた塗布液を乾燥後の膜厚が１
５μｍになるように塗布して電荷発生層を形成させ、電
子写真感光体を作製した。A coating solution prepared by dissolving 10 parts of and 10 parts of polycarbonate resin in 100 parts of tetrahydrofuran was applied onto this charge generation layer so that the film thickness after drying was 1.
A charge generation layer was formed by coating to a thickness of 5 μm, and an electrophotographic photoreceptor was produced.
比較例１
実施例１において、電荷発生層に使用する樹脂をブチラ
ール樹脂にかえた以外は、実施例１と同様にして感光体
を作製した。Comparative Example 1 A photoreceptor was produced in the same manner as in Example 1, except that the resin used for the charge generation layer was changed to butyral resin.
比較例２
実施例１において、電荷発生層に使用する樹脂をポリエ
ステル樹脂にかえた以外は、実施例１と同様にして感光
体を作製した。Comparative Example 2 A photoreceptor was produced in the same manner as in Example 1, except that the resin used for the charge generation layer was changed to polyester resin.
比較例３
実施例１において、電荷発生層に使用する樹脂をポリカ
ーボネート樹脂にかえた以外は、実施例１と同様にして
感光体を作製した。Comparative Example 3 A photoreceptor was produced in the same manner as in Example 1, except that the resin used for the charge generation layer was changed to polycarbonate resin.
よ蚊五±
実施例１において、電荷発生層に使用する樹脂を分子量
が２，０００のポリスチレン樹脂に代えた以外は、実施
例１と同様にして感光体を作製した。A photoreceptor was produced in the same manner as in Example 1, except that the resin used for the charge generation layer was replaced with a polystyrene resin having a molecular weight of 2,000.
比較例５
実施例１において、電荷発生層に使用する樹脂を分子量
か４００．ＯＧ Ｏのポリスチレン樹脂に代えた以外は
、実施例１と同様にして感光体を作製した。Comparative Example 5 In Example 1, the resin used for the charge generation layer had a molecular weight of 400. A photoreceptor was produced in the same manner as in Example 1, except that OGO polystyrene resin was used.
得られた感光体を粉像転写型複写機（ミノルタカメラ（
株）製ＥＰ４７０Ｚ）を用い、初期表面電位を一７５０
ｖとした時の、初期電位を１／２にするための露光１３
Ｅ ｌ／ ２（ｌｕｘ−ｓｅａ）、５秒間暗所に放置
した時の初期表面電位の減衰率Ｄ Ｄ Ｒｓ （％）お
よび残留電位Ｖｒを測定した。また、その時の画像品質
についても調べた。その結果を表−１に示す。表１中、
○は良好なことを、△は普通であることを、×は問題が
あることを表す。The obtained photoconductor was transferred to a powder image transfer type copying machine (Minolta camera).
EP470Z) manufactured by Co., Ltd., and the initial surface potential was set to -750.
Exposure 13 to reduce the initial potential to 1/2 when v
El/2 (lux-sea), the decay rate DDRs (%) of the initial surface potential when left in the dark for 5 seconds, and the residual potential Vr were measured. We also investigated the image quality at that time. The results are shown in Table-1. In Table 1,
○ means good, △ means fair, and × means there is a problem.
表−１
比較例１についてはＤＤＲで速く、繰り返しすることに
よって■。がどんどん低下した。また、比較例３につい
ては一部剥離が発生した。比較例５についても、繰り返
し使用に際し、一部剥離が発生した。Table 1 Comparative Example 1 is fast with DDR, and ■ by repeating it. has steadily declined. Furthermore, in Comparative Example 3, some peeling occurred. Regarding Comparative Example 5, some peeling occurred during repeated use.
発明の効果
本発明にかかる積層型感光体によれば、電荷発生層の顔
料分散塗液の塗工性が改善され５、かつ電荷発生層の顔
料分散安定性および保存安定性が向上し、品質のよい画
像が得られ、良好な電子写真特性が得られる。Effects of the Invention According to the laminated photoreceptor of the present invention, the coating properties of the pigment dispersion coating liquid for the charge generation layer are improved5, and the pigment dispersion stability and storage stability of the charge generation layer are improved, resulting in improved quality. A good image can be obtained, and good electrophotographic characteristics can be obtained.
Claims (1)
を有する積層型感光体において、電荷発生層が有機顔料
の樹脂分散層であり、結着剤樹脂が分子量１０，０００
〜３００，０００であるポリスチレン樹脂を含有するこ
とを特徴とする積層型感光体。1. In a laminated photoreceptor having at least a charge generation layer and a charge transport layer on a conductive substrate, the charge generation layer is a resin dispersion layer of an organic pigment, and the binder resin has a molecular weight of 10,000.
A laminated photoreceptor characterized by containing a polystyrene resin having a molecular weight of 300,000 to 300,000.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP26348786A JPS63116156A (en) | 1986-11-04 | 1986-11-04 | Laminated photosensitive body |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP26348786A JPS63116156A (en) | 1986-11-04 | 1986-11-04 | Laminated photosensitive body |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS63116156A true JPS63116156A (en) | 1988-05-20 |
Family
ID=17390196
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP26348786A Pending JPS63116156A (en) | 1986-11-04 | 1986-11-04 | Laminated photosensitive body |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63116156A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009248387A (en) * | 2008-04-03 | 2009-10-29 | Kojima Press Industry Co Ltd | Molded article taking-out apparatus |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59191052A (en) * | 1983-04-14 | 1984-10-30 | Canon Inc | Electrophotographic sensitive body |
| JPS6173960A (en) * | 1984-09-20 | 1986-04-16 | Canon Inc | Photoconductive composition and electrophotographic sensitive body containing its composition |
| JPS62291663A (en) * | 1986-06-11 | 1987-12-18 | Canon Inc | Electrophotographic sensitive body |
-
1986
- 1986-11-04 JP JP26348786A patent/JPS63116156A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59191052A (en) * | 1983-04-14 | 1984-10-30 | Canon Inc | Electrophotographic sensitive body |
| JPS6173960A (en) * | 1984-09-20 | 1986-04-16 | Canon Inc | Photoconductive composition and electrophotographic sensitive body containing its composition |
| JPS62291663A (en) * | 1986-06-11 | 1987-12-18 | Canon Inc | Electrophotographic sensitive body |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009248387A (en) * | 2008-04-03 | 2009-10-29 | Kojima Press Industry Co Ltd | Molded article taking-out apparatus |
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