JPH0371146A - Electrophotographic sensitive body - Google Patents
Electrophotographic sensitive bodyInfo
- Publication number
- JPH0371146A JPH0371146A JP20746489A JP20746489A JPH0371146A JP H0371146 A JPH0371146 A JP H0371146A JP 20746489 A JP20746489 A JP 20746489A JP 20746489 A JP20746489 A JP 20746489A JP H0371146 A JPH0371146 A JP H0371146A
- Authority
- JP
- Japan
- Prior art keywords
- protective layer
- sensitive body
- layer
- roughening
- polysiloxane structure
- 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
- 239000011241 protective layer Substances 0.000 claims abstract description 14
- -1 polysiloxane structure Polymers 0.000 claims abstract description 9
- 108091008695 photoreceptors Proteins 0.000 claims description 15
- 230000003746 surface roughness Effects 0.000 claims description 5
- 239000010410 layer Substances 0.000 abstract description 8
- 238000007788 roughening Methods 0.000 abstract description 6
- 239000000758 substrate Substances 0.000 abstract description 4
- 238000005507 spraying Methods 0.000 abstract description 2
- 230000002542 deteriorative effect Effects 0.000 abstract 1
- 230000001681 protective effect Effects 0.000 description 11
- 238000004140 cleaning Methods 0.000 description 7
- 239000011248 coating agent Substances 0.000 description 4
- 238000000576 coating method Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 3
- 150000001875 compounds Chemical class 0.000 description 3
- 238000006460 hydrolysis reaction Methods 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 2
- 238000009833 condensation Methods 0.000 description 2
- 230000005494 condensation Effects 0.000 description 2
- 230000006866 deterioration Effects 0.000 description 2
- BUGBHKTXTAQXES-UHFFFAOYSA-N Selenium Chemical compound [Se] BUGBHKTXTAQXES-UHFFFAOYSA-N 0.000 description 1
- 239000006087 Silane Coupling Agent Substances 0.000 description 1
- 230000003197 catalytic effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- JJQZDUKDJDQPMQ-UHFFFAOYSA-N dimethoxy(dimethyl)silane Chemical compound CO[Si](C)(C)OC JJQZDUKDJDQPMQ-UHFFFAOYSA-N 0.000 description 1
- 238000007610 electrostatic coating method Methods 0.000 description 1
- 230000007062 hydrolysis Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 229920000515 polycarbonate Polymers 0.000 description 1
- 239000004417 polycarbonate Substances 0.000 description 1
- 229910052711 selenium Inorganic materials 0.000 description 1
- 239000011669 selenium Substances 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 239000000454 talc Substances 0.000 description 1
- 229910052623 talc Inorganic materials 0.000 description 1
- LFQCEHFDDXELDD-UHFFFAOYSA-N tetramethyl orthosilicate Chemical compound CO[Si](OC)(OC)OC LFQCEHFDDXELDD-UHFFFAOYSA-N 0.000 description 1
Abstract
Description
【発明の詳細な説明】
（発明の属する技術分野）
本発明は表面保護層を設けた電子写真用感光体に関する
ものである。DETAILED DESCRIPTION OF THE INVENTION (Technical field to which the invention pertains) The present invention relates to an electrophotographic photoreceptor provided with a surface protective layer.
（従来技術とその解決すべき問題点） 電子写真用感光体においては、その表面が帯電。(Prior art and its problems to be solved) The surface of an electrophotographic photoreceptor is electrically charged.
露光、現像、転写、クリーニングなどにより電気的１機
械的なストレスを繰り返し受けるため、摩耗して寿命を
短くする。そこで通常図のように導電性基体（１）上に
底膜された光導電層（２）の表面に、光の入射を妨げる
ことが少ない保護膜（３）、例えばポリシロキサン構造
を有する有機透明膜を設けることにより保護することが
行われている。しかしこの場合形成された保護膜に膜厚
の〔ばらつき〕があると、感光体への入射光に差を生し
て灰地の画像上に膜厚変動に応した〔むら〕を生しるの
を防ぐことができないため画質の低下を生ずる。そこで
保護層の表面を出来得る限り平滑とし膜厚を均一に製造
することが行われている。Because they are repeatedly subjected to electrical and mechanical stress due to exposure, development, transfer, cleaning, etc., they wear out and shorten their lifespan. Therefore, as shown in the figure, a protective film (3) that hardly impedes the incidence of light is usually applied on the surface of a photoconductive layer (2) formed on a conductive substrate (1), such as an organic transparent film having a polysiloxane structure. Protection is provided by providing a membrane. However, in this case, if there are variations in the thickness of the protective film formed, this will cause a difference in the light incident on the photoreceptor, resulting in unevenness on the gray background image corresponding to the variation in film thickness. Since it is not possible to prevent this, image quality deteriorates. Therefore, the surface of the protective layer is made as smooth as possible and the film thickness is made uniform.
このようにすれば膜厚〔むら〕にもとづく画質の低下は
防止されるが、その反面平滑なるが故に紙のタルク付着
が起こり易く、現像時の高温下での画像ぼけ等を生し易
くなる。そこでこれを防くため表面保護層の性質を離型
性と撥水性に飛んだものとすることが行われているが、
この手段にはコスト、製造の点において種々の問題があ
る。また感光体表面のクリーニングにブレードを用いる
複写機などにおいては、表面が平滑である程ブレードと
表面との摩擦が大きくなって、ブレードが局部的に損傷
を受は易くなる。このため画像不良を起こす実用上の問
題がある。This prevents deterioration in image quality due to film thickness (unevenness), but on the other hand, since the paper is smooth, talc tends to adhere to the paper, which may cause image blurring under high temperatures during development. . Therefore, in order to prevent this, the properties of the surface protective layer are made to have superior mold releasability and water repellency.
This method has various problems in terms of cost and manufacturing. Furthermore, in a copying machine or the like that uses a blade to clean the surface of a photoreceptor, the smoother the surface, the greater the friction between the blade and the surface, making it easier for the blade to be locally damaged. This poses a practical problem of causing image defects.
（発明の目的）
本発明は上記の問題点を解決したポリシロキサン構造を
有する有機透明膜を表面保護膜とする電子写真用感光体
の提供を目的とするものである。(Object of the Invention) An object of the present invention is to provide an electrophotographic photoreceptor having a surface protective film that is an organic transparent film having a polysiloxane structure that solves the above-mentioned problems.
（問題点を解決するための本発明の手段）ポリシロキサ
ン構造を有する有機透明膜を表面保護膜とする電子写真
用感光体について、表面粗さと画像品質やクリーニング
性などの関係を種々検討を重ねた。その結果１０点平均
粗さＲｚ（ｐｍ）凹凸の平均間隔をＳｍ（ｊａｎ）とし
たとき、両者の比Ｓ ＬＩｌ／ Ｒｚが１以下の範囲内
においては、表面を粗面化した効果は見られず、２００
以上の範囲では灰地画像上に〔むら〕を発生して画質の
劣化を招く。(Means of the present invention for solving the problems) Regarding electrophotographic photoreceptors whose surface protection film is an organic transparent film having a polysiloxane structure, various studies have been conducted on the relationship between surface roughness, image quality, and cleanability. Ta. As a result, when the 10-point average roughness Rz (pm) and the average spacing of the unevenness are Sm (jan), the effect of roughening the surface is not seen within the range where the ratio S LIl / Rz of both is 1 or less. 200
In the above range, [unevenness] occurs on the gray background image, resulting in deterioration of image quality.
しかしＳ ｍ ／ Ｒｚが１〜２００の範囲においては
画像品質とクリーニング性は共に良好であって、前記の
問題点を一挙に解決しうることか見出された。However, it has been found that when S m /Rz is in the range of 1 to 200, both image quality and cleaning performance are good, and the above problems can be solved at once.
このような表面の粗面化は機械的手段により表面保護膜
を粗す方法のほかに、スプレーコートによっても実現可
能であり、また感光体の表面を予め所要の粗さに粗面化
しておき、ここに表面保護膜・を底膜することによって
も実現可能である。また本発明におけるポリシロキサン
構造を有する有機透明膜は例えば次のようにして製造が
可能である。In addition to the method of roughening the surface protective film by mechanical means, such surface roughening can also be achieved by spray coating. This can also be achieved by applying a surface protective film or bottom film here. Further, the organic transparent film having a polysiloxane structure according to the present invention can be manufactured, for example, as follows.
導電性基体上に形成した光導電層上に、下記Ａ。The following A is applied on the photoconductive layer formed on the conductive substrate.
Ｂ、Ｃ群から選ばれた少なくとも２種以上のシランカッ
プリング剤を無触媒加水分解して生成する。It is produced by non-catalytic hydrolysis of at least two or more silane coupling agents selected from Groups B and C.
［Ａ 群］エポキシシラン化合物
ＯＲ”
〔Ｂ 群〕アルコキシアルキルシラン化合物（Ｒ’）−
５Ｊ（ＯＲ’）４−、ｌ
〔Ｃ群〕ア巣ノシラン化合物
ＯＲ”
Ｈ２Ｎ−Ｒ’−３ｌ−Ｒ’
Ｒｚ
Ｒｚ
１１２Ｎ−Ｒ’−Ｎｌ（−Ｒ５−５ｒ−Ｒ３Ｏｆ？”
次に本発明の実施例について説明する。[Group A] Epoxysilane compound OR'' [Group B] Alkoxyalkylsilane compound (R')-
5J(OR')4-,l [Group C] Asinosilane compound OR"H2N-R'-3l-R' Rz Rz 112N-R'-Nl(-R5-5r-R3Of?" An example will be explained.
（実施例１）
Ｔ−グリシドキシプロビルトリエトキシシラン４．０容
量部、ジメトキシジメチルシラン３．０容量部、Ｎ−（
β−ア壽ノエチル）γ−アミノプロピルトリメキシシラ
ン３．０容量部を室温において混合したものに、水１．
５容量部を加えて撹拌して加水分解反応を行わせたのち
、これにメタノールを５０容量部加えて保護層形成用塗
布液とした。この塗布液をエアーレススプレー法による
静電塗装方式により公知のセレン感光体上に塗布して１
ｐＴＩｌの表面保護膜層を得た。(Example 1) 4.0 parts by volume of T-glycidoxyprobyltriethoxysilane, 3.0 parts by volume of dimethoxydimethylsilane, N-(
To a mixture of 3.0 parts by volume of γ-aminopropyltrimexysilane (β-aminoethyl) at room temperature, 1.0 parts of water was added.
After adding 5 parts by volume and stirring to carry out a hydrolysis reaction, 50 parts by volume of methanol was added thereto to prepare a coating solution for forming a protective layer. This coating solution was applied onto a known selenium photoreceptor using an electrostatic coating method using an airless spray method.
A surface protective film layer of pTIl was obtained.
この表面保護層の表面粗さを触針式の表面粗さ計により
測定した結果１０点平均粗さＲｚとして０、５５ｐ、凹
凸の平均間隔Ｓイとして２３．５ｒｍが得られ、これか
らＳイ／Ｒｚ＋４２．７であった。The surface roughness of this surface protective layer was measured using a stylus-type surface roughness meter, and as a result, the 10-point average roughness Rz was 0.55p, and the average spacing S of the unevenness was 23.5rm. Rz+42.7.
この感光体をブレードクリーニング方式の複写機に用い
て試験した結果１０万枚の複写後もブレードクリーニン
グによる清掃性は良好であり、画像の乱れも認められな
かった。When this photoreceptor was tested using a blade cleaning type copying machine, the cleaning performance by blade cleaning was good even after 100,000 copies were made, and no image disturbance was observed.
また更に１０万枚の複写を行った感光体を３５°Ｃ８０
％ＲＨの環境に入れて結露させ、その直後に画像試験を
実施したが結露による影響は認められず良好な画質を得
ることができた。Furthermore, the photoreceptor after 100,000 copies was heated at 35°C80
% RH to cause dew condensation, and an image test was conducted immediately after that, but no effects of dew condensation were observed and good image quality could be obtained.
（実施例２）
γ−グリシドキシプロビルトリエトキシラン５６０容量
部、テトラメトキシシラン２．５容量部、Ｎ（β−アル
ノエチニ）Ｔ−アミノプロピルトリメトキシシラン２．
５容量部を室温にて混合し、これに水１．５容量部を加
えて加水分解反応を行わせたのち、エタノール１００容
量部を加えて塗布液とした。この塗布液を電荷移動層に
ポリカーボネートを用いた機能分離型感光体上に塗布し
て膜厚が１．２即の表面保護膜を設けた。(Example 2) 560 parts by volume of γ-glycidoxypropyltriethoxylane, 2.5 parts by volume of tetramethoxysilane, 2.
5 parts by volume were mixed at room temperature, 1.5 parts by volume of water was added thereto to carry out a hydrolysis reaction, and then 100 parts by volume of ethanol was added to prepare a coating liquid. This coating solution was applied onto a functionally separated photoreceptor using polycarbonate as a charge transfer layer to provide a surface protective film having a thickness of about 1.2 mm.
この表面保護層の表面粗さを実施例１と同様な方法によ
り測定したところＲｚ＝０．５ｐ、Ｓ、、＝２７．４ｐ
ｍ、 Ｓ、／ Ｒｚ＝５４．８μ＋ｎである。また１
０万枚複写後のＲｚ＝０．４１μｙｎ、 ５ｎ−２６
，９μｍ＋ ｓｎ／Ｒｚ＋６５．６であり、これらを
表面保護層を有しない感光体と比較したところ第１表の
結果が得られた。これから本発明によるときは表面保護
層としての耐久性を保ちながら表面クリーニング性の向
上などを向上しうることか判る。The surface roughness of this surface protective layer was measured using the same method as in Example 1, and found that Rz=0.5p, S, ,=27.4p
m, S, /Rz=54.8μ+n. Also 1
Rz after 00,000 copies = 0.41μyn, 5n-26
, 9 μm+ sn/Rz+65.6, and when these were compared with a photoreceptor without a surface protective layer, the results shown in Table 1 were obtained. This shows that the present invention can improve surface cleaning properties while maintaining durability as a surface protective layer.
第 ｌ 表
（発明の効果）
以上から表面保護膜としてポリシロキサン構造からなる
透明有機膜を備えた電子写真用感光体において、保護膜
の表面をＳ、／Ｒｚ＝１〜２００の範囲で粗面化するこ
とにより、耐久性を保ちながら表面クリーニング性の向
上が可能となるもので、本発明の実用上の効果は極めて
大きい。Table l (Effects of the Invention) From the above, in an electrophotographic photoreceptor equipped with a transparent organic film having a polysiloxane structure as a surface protective film, the surface of the protective film is roughened in the range of S,/Rz=1 to 200. This makes it possible to improve surface cleaning properties while maintaining durability, and the practical effects of the present invention are extremely large.
図は表面保護膜を備えた電子写真用感光体の説明図であ
る。
（１）・・・導電性基体、 （２）・・・光導電層、（
３）・・・表面保護膜。The figure is an explanatory diagram of an electrophotographic photoreceptor provided with a surface protective film. (1)... Conductive substrate, (2)... Photoconductive layer, (
3)...Surface protective film.
Claims (1)
性膜上に保護層として設けた電子写真用感光体において
、前記保護層の表面粗さを、１０点平均粗さＲ＿ｚとで
こぼこの平均間隔Ｓ＿ｍの比で１〜２００の範囲とした
ことを特徴とする電子写真用感光体。(1) In an electrophotographic photoreceptor in which an organic transparent film having a polysiloxane structure is provided as a protective layer on a photoconductive film, the surface roughness of the protective layer is determined by the 10-point average roughness R_z and the average spacing of unevenness. A photoreceptor for electrophotography, characterized in that the ratio of S_m is in the range of 1 to 200.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20746489A JPH0371146A (en) | 1989-08-10 | 1989-08-10 | Electrophotographic sensitive body |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20746489A JPH0371146A (en) | 1989-08-10 | 1989-08-10 | Electrophotographic sensitive body |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0371146A true JPH0371146A (en) | 1991-03-26 |
Family
ID=16540203
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP20746489A Pending JPH0371146A (en) | 1989-08-10 | 1989-08-10 | Electrophotographic sensitive body |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0371146A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5733698A (en) * | 1996-09-30 | 1998-03-31 | Minnesota Mining And Manufacturing Company | Release layer for photoreceptors |
| JP2006301092A (en) * | 2005-04-18 | 2006-11-02 | Canon Inc | Image forming apparatus |
| JP2006330425A (en) * | 2005-05-27 | 2006-12-07 | Canon Inc | Image forming method |
-
1989
- 1989-08-10 JP JP20746489A patent/JPH0371146A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5733698A (en) * | 1996-09-30 | 1998-03-31 | Minnesota Mining And Manufacturing Company | Release layer for photoreceptors |
| JP2006301092A (en) * | 2005-04-18 | 2006-11-02 | Canon Inc | Image forming apparatus |
| JP4498200B2 (en) * | 2005-04-18 | 2010-07-07 | キヤノン株式会社 | Image forming apparatus |
| JP2006330425A (en) * | 2005-05-27 | 2006-12-07 | Canon Inc | Image forming method |
| JP4590308B2 (en) * | 2005-05-27 | 2010-12-01 | キヤノン株式会社 | Image forming method |
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