JPS6377059A - Electrophotographic sensitive body - Google Patents
Electrophotographic sensitive bodyInfo
- Publication number
- JPS6377059A JPS6377059A JP22280686A JP22280686A JPS6377059A JP S6377059 A JPS6377059 A JP S6377059A JP 22280686 A JP22280686 A JP 22280686A JP 22280686 A JP22280686 A JP 22280686A JP S6377059 A JPS6377059 A JP S6377059A
- Authority
- JP
- Japan
- Prior art keywords
- layer
- charge
- conductive substrate
- photoreceptor
- surface roughness
- 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
- 239000002245 particle Substances 0.000 claims abstract description 16
- 230000003746 surface roughness Effects 0.000 claims abstract description 15
- 239000000463 material Substances 0.000 claims abstract description 11
- 239000000126 substance Substances 0.000 claims abstract description 11
- 108091008695 photoreceptors Proteins 0.000 claims description 39
- 239000000758 substrate Substances 0.000 abstract description 19
- 230000035945 sensitivity Effects 0.000 abstract description 11
- 239000000969 carrier Substances 0.000 abstract description 10
- 238000002347 injection Methods 0.000 abstract description 3
- 239000007924 injection Substances 0.000 abstract description 3
- 239000002800 charge carrier Substances 0.000 abstract 1
- 238000010030 laminating Methods 0.000 abstract 1
- 239000000049 pigment Substances 0.000 description 6
- 230000000052 comparative effect Effects 0.000 description 4
- 239000004065 semiconductor Substances 0.000 description 4
- 239000000975 dye Substances 0.000 description 3
- 230000000694 effects Effects 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
- WUPHOULIZUERAE-UHFFFAOYSA-N 3-(oxolan-2-yl)propanoic acid Chemical compound OC(=O)CCC1CCCO1 WUPHOULIZUERAE-UHFFFAOYSA-N 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 239000011230 binding agent Substances 0.000 description 2
- 229910052980 cadmium sulfide Inorganic materials 0.000 description 2
- 239000011368 organic material Substances 0.000 description 2
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- SCYULBFZEHDVBN-UHFFFAOYSA-N 1,1-Dichloroethane Chemical compound CC(Cl)Cl SCYULBFZEHDVBN-UHFFFAOYSA-N 0.000 description 1
- RYHBNJHYFVUHQT-UHFFFAOYSA-N 1,4-Dioxane Chemical compound C1COCCO1 RYHBNJHYFVUHQT-UHFFFAOYSA-N 0.000 description 1
- XJYCALFJFALYAH-UHFFFAOYSA-N 4-[[2-chloro-4-[3-chloro-4-[[2-hydroxy-3-(phenylcarbamoyl)naphthalen-1-yl]diazenyl]phenyl]phenyl]diazenyl]-3-hydroxy-N-phenylnaphthalene-2-carboxamide Chemical compound OC1=C(N=NC2=CC=C(C=C2Cl)C2=CC(Cl)=C(C=C2)N=NC2=C(O)C(=CC3=C2C=CC=C3)C(=O)NC2=CC=CC=C2)C2=C(C=CC=C2)C=C1C(=O)NC1=CC=CC=C1 XJYCALFJFALYAH-UHFFFAOYSA-N 0.000 description 1
- PLAZXGNBGZYJSA-UHFFFAOYSA-N 9-ethylcarbazole Chemical compound C1=CC=C2N(CC)C3=CC=CC=C3C2=C1 PLAZXGNBGZYJSA-UHFFFAOYSA-N 0.000 description 1
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- BUGBHKTXTAQXES-UHFFFAOYSA-N Selenium Chemical compound [Se] BUGBHKTXTAQXES-UHFFFAOYSA-N 0.000 description 1
- 241000607479 Yersinia pestis Species 0.000 description 1
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 1
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 description 1
- 239000000980 acid dye Substances 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000007786 electrostatic charging Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 150000007857 hydrazones Chemical class 0.000 description 1
- 229910010272 inorganic material Inorganic materials 0.000 description 1
- 239000011147 inorganic material Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 125000001434 methanylylidene group Chemical group [H]C#[*] 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000003472 neutralizing effect Effects 0.000 description 1
- 150000004866 oxadiazoles Chemical class 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
- 239000013034 phenoxy resin Substances 0.000 description 1
- 229920006287 phenoxy resin Polymers 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 229910052697 platinum Inorganic materials 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
- 229920003227 poly(N-vinyl carbazole) Polymers 0.000 description 1
- 229920000515 polycarbonate Polymers 0.000 description 1
- 239000004417 polycarbonate Substances 0.000 description 1
- 229920005668 polycarbonate resin Polymers 0.000 description 1
- 239000004431 polycarbonate resin Substances 0.000 description 1
- 125000003367 polycyclic group Chemical group 0.000 description 1
- 229920001225 polyester resin Polymers 0.000 description 1
- 239000004645 polyester resin Substances 0.000 description 1
- 239000011669 selenium Substances 0.000 description 1
- 229910052711 selenium Inorganic materials 0.000 description 1
- PWEBUXCTKOWPCW-UHFFFAOYSA-N squaric acid Chemical compound OC1=C(O)C(=O)C1=O PWEBUXCTKOWPCW-UHFFFAOYSA-N 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- ANRHNWWPFJCPAZ-UHFFFAOYSA-M thionine Chemical compound [Cl-].C1=CC(N)=CC2=[S+]C3=CC(N)=CC=C3N=C21 ANRHNWWPFJCPAZ-UHFFFAOYSA-M 0.000 description 1
- 125000006617 triphenylamine group Chemical group 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
- 239000011701 zinc 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
- G03G5/10—Bases for charge-receiving or other layers
-
- 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
- G03G5/043—Photoconductive layers characterised by having two or more layers or characterised by their composite structure
- G03G5/047—Photoconductive layers characterised by having two or more layers or characterised by their composite structure characterised by the charge-generation layers or charge transport layers
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Photoreceptors In Electrophotography (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、複写機等に供される感光体に係り、特に、電
荷発生層と電荷輸送層との積層構造を有する機能分離型
の電子写真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 a photoreceptor used in copying machines and the like, and in particular to a functionally separated type electronic photoreceptor having a laminated structure of a charge generation layer and a charge transport layer. It relates to photographic photoreceptors.
従来、電子写真感光体の光導電性材料としては、主とし
て、セレン（Ｓｓ）、硫化カドミウム（ＣｄＳ）、或い
は酸化亜鉛（ＺｎＯ）等の無機材料が用いられており、
有機材料は、一般に、悪疫不足、並びに繰り返し使用に
おける応答の遅さのために、その使用が避けられていた
。しかしながら、近年、電荷発生層と電荷輸送層との積
層構造を有する機能分離型の電子写真感光体が提案され
たことに伴い、各種の有機材料が開発され、実用に供さ
れている。このような有機系の電子写真感光体は、アル
ミニウム等の導電性基板上に、有機光導電性の顔料また
は染料の粒子を、樹脂により結着して形成した電荷発生
層を設け、この電荷発生層上に、有機半導体を樹脂によ
り結着して形成した電荷輸送層を積層した構造を有して
いる。そして、電荷発生層にて発生されたキャリアが、
電荷輸送層に注入され、感光体へ輸送されることにより
、感光体としての感度を得るようになっている。Conventionally, inorganic materials such as selenium (Ss), cadmium sulfide (CdS), or zinc oxide (ZnO) have been mainly used as photoconductive materials for electrophotographic photoreceptors.
Organic materials have generally been avoided due to their lack of pest control as well as their slow response upon repeated use. However, in recent years, a functionally separated electrophotographic photoreceptor having a laminated structure of a charge generation layer and a charge transport layer has been proposed, and various organic materials have been developed and put into practical use. Such organic electrophotographic photoreceptors are provided with a charge generation layer formed by binding organic photoconductive pigment or dye particles with resin on a conductive substrate such as aluminum. It has a structure in which a charge transport layer formed by bonding an organic semiconductor with a resin is laminated on top of the layer. Then, the carriers generated in the charge generation layer are
By being injected into the charge transport layer and transported to the photoreceptor, the sensitivity of the photoreceptor is obtained.
ところが、上記従来の有機系の電子写真感光体では、電
荷発生層にて発生されたキャリアの、電荷輸送層への注
入量が少ないため、尚、充分な感度を得ることができな
いという欠点を有していた。However, the conventional organic electrophotographic photoreceptor described above still has the drawback that sufficient sensitivity cannot be obtained because the amount of carriers generated in the charge generation layer injected into the charge transport layer is small. Was.
〔問題点を解決するための手段及び作用〕本発明の電子
写真感光体は、上記の問題点を解決するために、導電性
支持体上に、有機系の光導電性材料からなる電荷発生物
質の粒子を含有する電荷発生層と、有機系の電荷輸送層
との積層構造からなる感光層を設けた電子写真感光体に
おいて、導電性支持体の平均表面粗さを、上記電荷発生
物質の平均粒子径の０．２〜５倍に設定し、電荷輸送層
へのキャリア注入効率を向上し、高い感度を得ることが
ができるように構成したことを特徴とするものである。[Means and effects for solving the problems] In order to solve the above problems, the electrophotographic photoreceptor of the present invention has a charge generating substance made of an organic photoconductive material on a conductive support. In an electrophotographic photoreceptor provided with a photosensitive layer having a laminated structure of a charge generation layer containing particles of The particle size is set to 0.2 to 5 times the particle diameter, thereby improving carrier injection efficiency into the charge transport layer and achieving high sensitivity.
即ち、本発明に係る電子写真感光体は、第１図に示すよ
うに、導電性支持体である導電性基板１上に、有機系の
光導電性材料からなる電荷発生物質の粒子を含有する電
荷発生層２と、有機系の電荷輸送層３とが順次積層され
ている。上記電荷発生層２と電荷輸送層３とは感光Ｎ４
を構成している。そして、導電性基板１の平均表面粗さ
は、上記電荷発生物質における平均粒子径の０．２〜５
倍に設定されている。That is, the electrophotographic photoreceptor according to the present invention, as shown in FIG. 1, contains particles of a charge generating substance made of an organic photoconductive material on a conductive substrate 1 which is a conductive support. A charge generation layer 2 and an organic charge transport layer 3 are sequentially laminated. The charge generation layer 2 and charge transport layer 3 are photosensitive N4
It consists of The average surface roughness of the conductive substrate 1 is 0.2 to 5 of the average particle diameter of the charge generating substance.
It is set to double.
本発明において、上記の電荷発生物質としては、フタロ
シアン顔料、アゾ顔料、シアニン染料、多環キノン顔料
、ペリレン系顔料、若しくはスクエアリック酸メチン染
料等の顔料または染料を用いるのが好ましく、また、こ
の電荷発生物質をポリエステル樹脂等の有機結着剤中に
分散させることにより、電荷発生層２を形成するのが好
ましい。In the present invention, it is preferable to use pigments or dyes such as phthalocyan pigments, azo pigments, cyanine dyes, polycyclic quinone pigments, perylene pigments, or methine squaric acid dyes as the charge generating substance, and It is preferable to form the charge generation layer 2 by dispersing this charge generation substance in an organic binder such as a polyester resin.
また、電荷輸送層３に供される電荷輸送物質としては、
可視光に対して透明であり、ポリビニルカルバゾール若
しくはその誘導体等の高分子有機半導体、または、オキ
サジアゾール誘導体、トリフェニルアミン誘導体、若し
くはヒドラゾン誘導体等の低分子有機半導体を用いるの
が好ましい。そして、電荷輸送層３は、上記の有機半導
体を、ポリカーボネイト樹脂等の有機結着剤中に分散さ
せることにより形成するのが好ましい。また、導電性基
板１は、アルミニウムの他、アルミニウム合金、銅、亜
鉛、ステンレス、金、若しくは白金等、基体自体が導電
性を有するもの、または金属若しくは導電性粒子をプラ
スチ７りや紙に蒸着し、被覆したもの等を用いるのが好
ましい。In addition, the charge transport material used in the charge transport layer 3 is as follows:
It is preferable to use a high-molecular organic semiconductor that is transparent to visible light, such as polyvinylcarbazole or its derivatives, or a low-molecular organic semiconductor such as an oxadiazole derivative, a triphenylamine derivative, or a hydrazone derivative. The charge transport layer 3 is preferably formed by dispersing the organic semiconductor described above in an organic binder such as polycarbonate resin. In addition to aluminum, the conductive substrate 1 may be made of materials whose substrate itself is conductive, such as aluminum alloy, copper, zinc, stainless steel, gold, or platinum, or metal or conductive particles deposited on plastic or paper. It is preferable to use a coated material.
上記の構成において、本感光体における静電潜像形成機
構は、以下のようになっている。即ち、光照射により電
荷発生層２にて生成された励起子は、電荷発生Ｎ２内、
または電荷発生層２と電荷輸送層３との境界において、
電子と正孔とに解離 □され、キャリアとしての正孔が
発生される。このキャリアは電荷輸送層３に注入され、
感光体表面の負電荷を中和することにより静電潜像を形
成することになる。一方、電子は導電性基板１側に移行
する。In the above configuration, the electrostatic latent image forming mechanism in the present photoreceptor is as follows. That is, excitons generated in the charge generation layer 2 by light irradiation are inside the charge generation layer N2,
Or at the boundary between the charge generation layer 2 and the charge transport layer 3,
It is dissociated into electrons and holes, and holes are generated as carriers. These carriers are injected into the charge transport layer 3,
An electrostatic latent image is formed by neutralizing the negative charges on the surface of the photoreceptor. On the other hand, electrons migrate to the conductive substrate 1 side.
ここで、本感光体の如く積層構造をなす感光体の感度を
向上させるには、電荷発生層２内にて発生されるキャリ
ア数を増加させ、発生したキャリアが再結合することな
く、かつ捕獲されることなく電荷輸送層３に注入され、
迅速に感光体表面へ輸送されることが必要である。そこ
で、本感光体では、導電性基板１の平均表面粗さが、電
荷発生層２における電荷発生物質の平均粒子径の０．２
〜５倍に設定され、導電性基Ｖｉ１の表面が粗面にされ
ている。即ち、導電性基板１上に設けられる電荷発生層
２と電荷輸送層３との界面の実質面積が拡大されている
。従って、電荷発生層２にて発生さたキャリアは、再結
合することなくかつ捕獲されることなく電荷輸送層３に
注入され、その結果、電荷輸送層３へのキャリヤ注入量
が増大され、迅速に感光体表面へ輸送される。このよう
な動作により感度が向上されるようになっている。尚、
導電性基板１の表面粗さが大きすぎると、電荷発生層２
を均一な層として形成するのが困難となり、逆に、小さ
すぎると上記の効果が得難くなる。このため、平均表面
粗さを上記の範囲に設定している。In order to improve the sensitivity of a photoreceptor having a laminated structure like the present photoreceptor, the number of carriers generated in the charge generation layer 2 is increased, and the generated carriers are prevented from recombining and captured. is injected into the charge transport layer 3 without being
It is necessary to transport it quickly to the surface of the photoreceptor. Therefore, in this photoreceptor, the average surface roughness of the conductive substrate 1 is 0.2 of the average particle diameter of the charge generating substance in the charge generating layer 2.
5 times, and the surface of the conductive group Vi1 is made rough. That is, the substantial area of the interface between the charge generation layer 2 and the charge transport layer 3 provided on the conductive substrate 1 is expanded. Therefore, the carriers generated in the charge generation layer 2 are injected into the charge transport layer 3 without being recombined or captured, and as a result, the amount of carriers injected into the charge transport layer 3 is increased, and the carriers are rapidly injected into the charge transport layer 3. transported to the photoreceptor surface. Sensitivity is improved by such an operation. still,
If the surface roughness of the conductive substrate 1 is too large, the charge generation layer 2
It becomes difficult to form a uniform layer, and conversely, if it is too small, it becomes difficult to obtain the above effect. For this reason, the average surface roughness is set within the above range.
〔実施例１〕
次に、本発明の第１実施例を本感光体の製造工程に従っ
て説明する。[Example 1] Next, a first example of the present invention will be described according to the manufacturing process of the present photoreceptor.
平均表面粗度０．０４μｍの市販のＡｌ板を２枚、化学
研磨することにより、平均表面粗度が０．０８μｍと０
．４μｍの導電性基板１・１を作製した。By chemically polishing two commercially available Al plates with an average surface roughness of 0.04 μm, the average surface roughness was 0.08 μm.
．． A 4 μm conductive substrate 1.1 was produced.
そして、各導電性基板１上に、クロロダイアンブルー（
以１ｃＤｓと称する）とフェノキシ樹脂とをジオキサン
にて分散混合した溶液を塗布し、乾燥させて電荷発生Ｎ
２を形成した。この電荷発生層２の膜厚は０．８μｍで
あった。また、上記ＣＤＢの平均粒子径はＳＥＭ写真か
ら０．３〜０．４μｍであった。さらに、上記電荷発生
層２上に、Ｎエチルカルバゾールジエチルヒドラゾンと
ポリカーボネートとをジクロルエタンにて溶解した溶液
を塗布し、乾燥させて電荷輸送層３形成した。この電荷
輸送層３の膜厚は２０μｍであった。このようにして、
導電性基板１の平均表面粗度が０．０８μｍと０．４μ
ｍである２枚の積層型電子写真感光体Ａ−Ｂを得た。ま
た、これらの電子写真感光体Ａ−Ｂと性能を比較するた
めに、平均表面粗度が０．０４μｍの未処理のＡｌ板を
用い、同様の工程により比較用感光体Ｃを作製した。そ
して、上記王者について、静電気帯電試験装置（川口電
気■製・５Ｐ−４２８）により、光照射による表面電位
の減衰状態の測定を行った。その結果、感度の指針とな
る半減露光量は、電子写真感光体Ａ−’Ｂでは・それぞ
れ、 ３．４１２ ｕｘ、ｓｅｃと３ 、Ｑ Ｉｔ ｕ
ｘ、ｓｅｃというように小さい値となり、比較用感光体
Ｃでは６．０１ ｕｘ、ｓｅｃとなった。この数値より
、本感光体Ａ−Ｂは、比較用感光体Ｃと比べて、高い感
度を有することが認められた。Then, on each conductive substrate 1, chlorodiane blue (
A solution prepared by dispersing and mixing 1cDs (hereinafter referred to as 1cDs) and phenoxy resin in dioxane is applied and dried to generate charge-generating N.
2 was formed. The thickness of this charge generation layer 2 was 0.8 μm. Moreover, the average particle diameter of the above-mentioned CDB was 0.3 to 0.4 μm from a SEM photograph. Furthermore, a solution of N-ethylcarbazole diethylhydrazone and polycarbonate dissolved in dichloroethane was applied onto the charge generation layer 2 and dried to form the charge transport layer 3. The thickness of this charge transport layer 3 was 20 μm. In this way,
The average surface roughness of the conductive substrate 1 is 0.08μm and 0.4μm.
Two laminated electrophotographic photoreceptors A-B were obtained. In addition, in order to compare the performance with these electrophotographic photoreceptors A-B, a comparison photoreceptor C was prepared in the same process using an untreated Al plate having an average surface roughness of 0.04 μm. Then, for the above-mentioned champion, the attenuation state of the surface potential due to light irradiation was measured using an electrostatic charging tester (manufactured by Kawaguchi Electric ■, 5P-428). As a result, the half-decrease exposure amount, which serves as a guideline for sensitivity, is 3.412 ux, sec and 3.412 ux, sec for electrophotographic photoreceptors A-'B, respectively.
The value was small, such as x, sec, and for comparison photoreceptor C, it was 6.01 ux, sec. From this value, it was confirmed that the present photoreceptor A-B had higher sensitivity than the comparative photoreceptor C.
〔実施例２〕
次に、本発明に係る第２の実施例として、別の電子写真
感光体を作製するために、平均表面粗度０．０２μｍの
市販のＡｌ蒸着ＰＥＴを化学研磨し、今度は平均表面粗
度０．８μｍの１．５μｍの導電性基板１を作製した。[Example 2] Next, as a second example according to the present invention, in order to fabricate another electrophotographic photoreceptor, commercially available Al-deposited PET with an average surface roughness of 0.02 μm was chemically polished. produced a 1.5 μm conductive substrate 1 with an average surface roughness of 0.8 μm.
そして、この導電性基板１上に、前述の実施例と同様の
方法にて、電荷発生層２と電荷輸送Ｎ３とを設け、導電
性基板１の平均表面粗度が０．８μｍと１．５μｍであ
る２枚の積層型電子写真感光体Ｄ−Ｅを得た。又、未処
理のＡｊ２薫着ＰＥＴを用い、同様に比較用感光体Ｆを
作製した。これら各感光体に対して前述例と同様の方法
にて感光特性の測定を行ったところ、半減露光量におい
て、電子写真感光体Ｄ−Ｅは、それぞれ、’ｌ 、１３
Ｉｔ ｕｘ、ｓｅｃと３．５１ ｕｘ、ｓｅｃとなり
、比較用感光体Ｆは６．２１ ｕｘ、ｓｅｃとなった。Then, on this conductive substrate 1, a charge generation layer 2 and a charge transport layer N3 were provided in the same manner as in the above embodiment, and the average surface roughness of the conductive substrate 1 was 0.8 μm and 1.5 μm. Two laminated electrophotographic photoreceptors D-E were obtained. In addition, a comparative photoreceptor F was similarly produced using untreated Aj2 smoked PET. When the photosensitive characteristics of each of these photoconductors were measured in the same manner as in the above example, it was found that at half-decreased exposure, electrophotographic photoconductors DE had 'l' and 13, respectively.
It ux, sec and 3.51 ux, sec, and the comparative photoreceptor F had 6.21 ux, sec.
従って、前述の例と同様、本感光体は良好な感度を有し
ていることが認められた。Therefore, like the above-mentioned example, it was confirmed that this photoreceptor had good sensitivity.
さらに、前記の各感光体Ａ−Ｆを、実際に複写機に搭載
して繰り返しテストしたところ、本発明に係る電子写真
感光体Ａ−Ｂ−Ｄ−Ｅは、積層構造に剥離を生じること
はなかったが、比較用感光体Ｃ−Ｆは剥離を生じがちで
あった。Furthermore, when the photoreceptors A-F described above were actually installed in a copying machine and tested repeatedly, it was found that the electrophotographic photoreceptors A-B-D-E according to the present invention did not cause peeling in the laminated structure. However, comparative photoreceptors C-F tended to peel off.
本発明の積層型電子写真感光体は、以上のように、導電
性支持体上に、有機系の光導電性材料からなる電荷発生
物質の粒子を含有する電荷発生層と、有機系の電荷輸送
層との積層構造からなる怒光層を設けた電子写真感光体
において、導電性支持体の平均表面粗さを、上記電荷発
生物質の平均粒子径の０．２〜５倍に設定した構成であ
るから、電荷発生層と電荷輸送層との界面の面積が実質
的に拡大され、電荷注入効率が向上される。従って、良
好な感度を得ることができる。また、各層間における接
着強度が増し、耐久性を向上することができる等の効果
を奏する。As described above, the laminated electrophotographic photoreceptor of the present invention includes a charge generation layer containing particles of a charge generation substance made of an organic photoconductive material, and an organic charge transport layer on a conductive support. In an electrophotographic photoreceptor provided with a photoreceptor layer having a laminated structure with layers, the average surface roughness of the conductive support is set to 0.2 to 5 times the average particle diameter of the charge generating substance. Therefore, the area of the interface between the charge generation layer and the charge transport layer is substantially expanded, and charge injection efficiency is improved. Therefore, good sensitivity can be obtained. Moreover, the adhesive strength between each layer is increased, and durability can be improved.
第１図は本発明の一実施例を示す縦断面図である。
１は導電性基板、２は電荷発生層、３は電荷輸送層であ
る。FIG. 1 is a longitudinal sectional view showing one embodiment of the present invention. 1 is a conductive substrate, 2 is a charge generation layer, and 3 is a charge transport layer.
Claims (1)
電荷発生物質の粒子を含有する電荷発生層と、有機系の
電荷輸送層との積層構造からなる感光層を設けた電子写
真感光体において、導電性支持体の平均表面粗さを、上
記電荷発生物質の平均粒子径の０．２〜５倍に設定した
ことを特徴とする電子写真感光体。1. Electrophotography in which a photosensitive layer having a laminated structure of a charge generation layer containing particles of a charge generation substance made of an organic photoconductive material and an organic charge transport layer is provided on a conductive support. An electrophotographic photoreceptor, characterized in that the average surface roughness of the conductive support is set to 0.2 to 5 times the average particle diameter of the charge generating substance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP22280686A JPS6377059A (en) | 1986-09-19 | 1986-09-19 | Electrophotographic sensitive body |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP22280686A JPS6377059A (en) | 1986-09-19 | 1986-09-19 | Electrophotographic sensitive body |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6377059A true JPS6377059A (en) | 1988-04-07 |
Family
ID=16788187
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP22280686A Pending JPS6377059A (en) | 1986-09-19 | 1986-09-19 | Electrophotographic sensitive body |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6377059A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1376243A1 (en) * | 2002-06-28 | 2004-01-02 | Ricoh Company | Electrophotographic photoreceptor, method for manufacturing and image forming apparatus using the photoreceptor |
| US7354686B2 (en) | 2003-03-20 | 2008-04-08 | Ricoh Company, Ltd. | Electrophotographic photoconductor and process for manufacturing the same, and image forming apparatus and process cartridge containing the same |
-
1986
- 1986-09-19 JP JP22280686A patent/JPS6377059A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1376243A1 (en) * | 2002-06-28 | 2004-01-02 | Ricoh Company | Electrophotographic photoreceptor, method for manufacturing and image forming apparatus using the photoreceptor |
| US7354686B2 (en) | 2003-03-20 | 2008-04-08 | Ricoh Company, Ltd. | Electrophotographic photoconductor and process for manufacturing the same, and image forming apparatus and process cartridge containing the same |
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