JP2001188374A - Substrate for electrophotographic photoreceptor, its producing method and electrophotographic photoreceptor - Google Patents
Substrate for electrophotographic photoreceptor, its producing method and electrophotographic photoreceptorInfo
- Publication number
- JP2001188374A JP2001188374A JP37220299A JP37220299A JP2001188374A JP 2001188374 A JP2001188374 A JP 2001188374A JP 37220299 A JP37220299 A JP 37220299A JP 37220299 A JP37220299 A JP 37220299A JP 2001188374 A JP2001188374 A JP 2001188374A
- Authority
- JP
- Japan
- Prior art keywords
- substrate
- electrophotographic photoreceptor
- thickness
- roughness
- nickel electroformed
- Prior art date
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Abstract
Description
【０００１】[0001]
【発明の属する技術分野】この発明は、ベルトタイプの
有機系電子写真感光体用基体とその製造方法およびその
基体を用いた電子写真用感光体に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a belt-type substrate for an organic electrophotographic photosensitive member, a method for producing the same, and an electrophotographic photosensitive member using the substrate.
【０００２】[0002]
【従来の技術】従来、電子写真技術を応用した複写機や
プリンターに用いられる有機系電子写真感光体（以下、
ＯＰＣとも称する）では、基体として通常アルミニウム
合金からなる円筒が用いられてきたが、近年、ニッケル
電鋳管やＰＩ，ＰＥＴなどの樹脂からなるベルトが基体
として用いられるようになり、今後の伸長が見込まれて
いる。2. Description of the Related Art Conventionally, an organic electrophotographic photosensitive member (hereinafter, referred to as an electrophotographic photosensitive member) used in a copying machine or a printer to which the electrophotographic technology is applied.
In OPC, a cylinder made of an aluminum alloy has usually been used as a base, but in recent years, a belt made of a resin such as a nickel electroformed tube or PI or PET has been used as a base, and the future growth is expected. Expected.
【０００３】しかし、例えばニッケル電鋳管の場合、そ
のままの状態では表面が鏡面に近い状態にあり、長波長
単色可干渉光を露光光とする電子写真技術応用装置，例
えばレーザープリンターなどに用いた場合画像に干渉縞
模様が発生するという問題があった。このため、一般的
には基体上に無機化合物微粉を含有する樹脂液を塗布し
てなる下引き層を設け、干渉縞模様の発生を抑制するこ
とが行われてきた。However, in the case of a nickel electroformed tube, for example, the surface is in a state close to a mirror surface as it is, and it is used in an electrophotographic technology application device using long wavelength monochromatic coherent light as exposure light, for example, a laser printer. In this case, there is a problem that an interference fringe pattern occurs in an image. For this reason, generally, an undercoat layer formed by applying a resin liquid containing fine inorganic compound powder on a substrate is provided to suppress the occurrence of interference fringe patterns.
【０００４】[0004]
【発明が解決しようとする課題】上述のように、無機化
合物微粉を含有する樹脂液を塗布してなる下引き層を設
けることにより、長波長単色可干渉光を露光光とする電
子写真技術応用装置に用いても画像に干渉縞模様の発生
しない感光体を得ることができる。しかしながら、装置
の使用環境が高温高湿から低温低湿に及んで大幅に変動
した場合、それに応じてＯＰＣの下引き層の電気特性が
変動し、そのためにＯＰＣの電気特性が大きく変動し、
安定した画像品質の維持が難しいという問題があった。As described above, by providing an undercoat layer formed by applying a resin solution containing fine inorganic compound powder, electrophotographic technology using long wavelength monochromatic coherent light as exposure light is provided. Even when used in an apparatus, a photoreceptor having no interference fringe pattern in an image can be obtained. However, when the use environment of the device fluctuates greatly from high temperature and high humidity to low temperature and low humidity, the electric characteristics of the underlayer of the OPC fluctuate accordingly, and the electric characteristics of the OPC fluctuate greatly,
There is a problem that it is difficult to maintain stable image quality.
【０００５】また、均質な下引き層を塗布形成するため
には、下引き層塗布液中に無機化合物微粉材料を凝集さ
せずに分散した状態で維持することが必要で、そのため
には設備コストも膨大となり、結果として安価なＯＰＣ
を提供することは困難であるという問題もあった。この
発明は、上述の点に鑑みてなされたものであって、長波
長単色可干渉光を露光光とする電子写真技術応用装置に
用いても画像に干渉縞模様が発生せず、かつ、温湿度環
境が大幅に変動しても特性変動が少なくて画像品質の安
定した高品質のベルトタイプの低価格のＯＰＣを提供す
ること、およびそのような優れたＯＰＣ用の基体とその
製造方法を提供することを目的とする。Further, in order to form a uniform undercoat layer by coating, it is necessary to maintain the inorganic compound fine-powder material dispersed in the undercoat layer coating solution without agglomeration. Has become huge, resulting in inexpensive OPC
There is also a problem that it is difficult to provide the information. The present invention has been made in view of the above points, and does not generate an interference fringe pattern in an image even when used in an electrophotographic application apparatus using long-wavelength monochromatic coherent light as exposure light. Provided is a high-quality belt-type low-cost OPC having stable image quality even when the humidity environment fluctuates greatly, and a substrate for such an excellent OPC and a method for manufacturing the same. The purpose is to do.
【０００６】[0006]
【課題を解決するための手段】上記の課題は、この発明
によれば、電子写真感光体用基体として、肉厚３０μｍ
ないし１００μｍのニッケル電鋳管からなり、その表面
粗さが十点平均粗さＲ Z で０．３μｍないし２μｍとな
るように乾式ブラスト加工により粗面化処理が施されて
いる基体を用いることによって解決される。SUMMARY OF THE INVENTION The above-mentioned object is achieved by the present invention.
According to the above, as a substrate for an electrophotographic photosensitive member, a thickness of 30 μm
Consisting of an electroformed nickel tube with a thickness of
Roughness is 10-point average roughness R Z0.3 to 2 μm
The surface is roughened by dry blasting
The problem is solved by using a substrate that is in use.
【０００７】ニッケル電鋳管の肉厚が３０μｍ未満では
変形し易く、乾式ブラスト加工による表面粗面化が困難
である。肉厚が１００μｍを超えると弾性が乏しくな
り、ベルトタイプＯＰＣの基体としては不向きとなり、
電鋳管コストも高くなる。表面が粗面化されていること
により、下引き層を設けなくても半導体レーザー光のよ
うな長波長単色可干渉光多重反射によって出現する画像
上の干渉縞模様の発生を抑制することができる。また、
その表面が粗面化されることによって表面積が増加しそ
の上に形成される電荷発生層や電荷輸送層などの有機機
能材料からなる機能層との密着性も向上する。さらにま
た、粗面化されることにより表面の濡れ性が向上するの
でその上に形成される機能層の成膜が容易かつ均一とな
る。表面粗さは十点平均粗さＲZ で０．４μｍないし２
μｍとすることが望ましい。ＲZ が０．３μｍ未満では
十分な密着性，濡れ性が得られず、ＲZ が２μｍを超え
ると薄膜の機能層膜厚の均一性が損なわれるという不都
合が生じる。If the thickness of the nickel electroformed tube is less than 30 μm, it is easily deformed, and it is difficult to roughen the surface by dry blasting. If the thickness exceeds 100 μm, the elasticity becomes poor, and it is not suitable as a base of the belt type OPC,
The cost of electroformed tubes also increases. Since the surface is roughened, it is possible to suppress the occurrence of interference fringe patterns on an image that appears due to multiple reflection of long-wavelength monochromatic coherent light such as semiconductor laser light without providing an undercoat layer. . Also,
By roughening the surface, the surface area is increased, and the adhesion to a functional layer made of an organic functional material such as a charge generation layer and a charge transport layer formed thereon is also improved. Furthermore, the roughening improves the wettability of the surface, so that the functional layer formed thereon can be easily and uniformly formed. The surface roughness is 0.4 μm to 2 as the ten-point average roughness R Z.
μm is desirable. When R Z is less than 0.3 μm, sufficient adhesion and wettability cannot be obtained, and when R Z exceeds 2 μm, there arises a problem that the uniformity of the functional layer thickness of the thin film is impaired.
【０００８】基体表面の濡れ性は、温度２３℃±２℃に
おいて５００μＮ／ｃｍ以上であることが望ましい。こ
のような基体は、肉厚３０μｍないし１００μｍのニッ
ケル電鋳管外表面に平均粒径５μｍないし５０μｍのア
ルミナ粒子またはジルコニア粒子をメディアとして乾式
ブラスト加工を施して表面粗さが十点平均粗さＲZ で
０．３μｍないし２μｍになるようにあらすことによっ
て製造される。使用するメディアとしてはアルミナ粒子
またはジルコニア粒子が好適で、ガラスビーズや樹脂粒
子ではニッケル電鋳管表面硬度に比してメディアの硬度
が不足し良好な粗面を形成することができない。また、
メディアの平均粒径はＲZ で０．３μｍないし２μｍの
粗面を得るためには５μｍないし５０μｍとすると好適
である。It is desirable that the wettability of the substrate surface is 500 μN / cm or more at a temperature of 23 ° C. ± 2 ° C. Such a substrate is subjected to dry blasting using a medium of alumina or zirconia particles having an average particle size of 5 to 50 μm on the outer surface of a nickel electroformed tube having a thickness of 30 to 100 μm to obtain a ten-point average roughness R. It is manufactured by sizing to 0.3 μm to 2 μm in Z. Alumina particles or zirconia particles are preferable as the medium to be used, and glass beads or resin particles have insufficient hardness of the medium as compared with the surface hardness of the nickel electroformed tube, so that a good rough surface cannot be formed. Also,
The average particle size of the media is preferable to a 50μm to not 5μm in order to obtain a rough surface of 2μm to not 0.3μm in R Z.
【０００９】上述のような、肉厚３０μｍないし１００
μｍのニッケル電鋳管からなり、その表面粗さが十点平
均粗さＲZ で０．３μｍないし２μｍとなるように乾式
ブラスト加工により粗面化処理が施されている基体を用
いることによって、長波長単色可干渉光を露光光とする
電子写真技術応用装置に用いても画像に干渉縞模様が発
生せず、かつ、温湿度環境が大幅に変動しても特性変動
が少なくて画像品質の安定した高品質のベルトタイプの
ＯＰＣを低価格で得ることができる。As described above, the thickness is 30 μm to 100 μm.
By using a substrate which is made of a nickel electroformed pipe having a surface roughness of 0.3 μm to 2 μm with a ten-point average roughness R Z of 10 μm by a dry blasting process, Even when used in electrophotographic technology using long-wavelength monochromatic coherent light as the exposure light, no interference fringe pattern occurs in the image, and even if the temperature and humidity environment fluctuates significantly, the characteristic fluctuation is small and the image quality is low. A stable, high-quality belt-type OPC can be obtained at a low price.
【００１０】[0010]
【発明の実施の形態】肉厚が３０μｍ以上１００μｍ以
下の範囲内のニッケル電鋳管外表面に、アルミナ粒子ま
たはジルコニア粒子をメディアとして乾式ブラスト加工
を施す。加工条件としては、メディアの平均粒径５μｍ
〜５０μｍ，ニッケル電鋳管表面の移動速度１，５００
ｍｍ／分〜７５，０００ｍｍ／分，メディアの吹き付け
圧４ｋｇｆ／ｃｍ2 以下，ニッケル電鋳管外表面とメデ
ィア噴射ノズル先端との距離５０ｍｍ以上，ニッケル電
鋳管表面の移動に対して垂直方向のメディア吹き付け処
理速度は２０ｍｍ／秒以下の条件を適宜組み合わせて加
工することにより、ニッケル電鋳管外表面を十点平均粗
さＲZ で０．３μｍないし２μｍになるように粗面化す
ることができる。BEST MODE FOR CARRYING OUT THE INVENTION The outer surface of a nickel electroformed pipe having a thickness of 30 μm or more and 100 μm or less is subjected to dry blasting using alumina particles or zirconia particles as a medium. The processing conditions were as follows: the average particle size of the media was 5 μm.
５０50 μm, moving speed of nickel electroformed tube surface 1,500
mm / min to 75,000 mm / min, spray pressure of the media is 4 kgf / cm 2 or less, distance between the outer surface of the nickel electroformed tube and the tip of the media injection nozzle is 50 mm or more, perpendicular to the movement of the nickel electroformed tube surface. Media spraying processing speed by processing in appropriate combination the following conditions 20 mm / sec, be roughened to to not 0.3μm nickel electroforming ten-point average roughness extravascular surface R Z becomes 2μm it can.
【００１１】このように外表面が粗面化されたニッケル
電鋳管からなる基体の外表面上に電荷発生層，電荷輸送
層などの機能層を形成することにより、長波長単色可干
渉光を露光光とする電子写真技術応用装置に用いても画
像に干渉縞模様が発生せず、かつ、温湿度環境が大幅に
変動しても特性変動が少なくて画像品質の安定した高品
質のベルトタイプのＯＰＣを低価格で製造することが可
能となる。By forming a functional layer such as a charge generation layer and a charge transport layer on the outer surface of a substrate made of a nickel electroformed tube having a roughened outer surface, long-wavelength monochromatic coherent light can be generated. High quality belt type with stable image quality, with no interference fringe pattern in the image even when used in electrophotographic technology application equipment with exposure light, and with little characteristic fluctuation even if the temperature and humidity environment fluctuates greatly. OPC can be manufactured at a low price.
【００１２】[0012]
【実施例】以下、具体的な実施例について説明する。 実施例 肉厚２０，４０，６０，１２０μｍで直径８０ｍｍのニ
ッケル電鋳管を内面から円筒状の支持体で支持した状態
でニッケル電鋳管の外表面に平均粒径３，１０，３０，
６０μｍのアルミナ粒子を用いて乾式ブラスト加工を施
して基体とする。ブラスト加工条件は、ニッケル電鋳管
回転数２４０ｒｐｍ（約６０．０００ｍｍ／分），メデ
ィア吹き付け圧３ｋｇｆ／ｃｍ2 ，ニッケル電鋳管外表
面とメディア噴射ノズル先端との距離８０ｍｍ，ニッケ
ル電鋳管の回転に対する垂直方向のメディア吹き付け処
理速度１０ｍｍ／秒とした。Embodiments Hereinafter, specific embodiments will be described. EXAMPLE A nickel electroformed tube having a wall thickness of 20, 40, 60, 120 μm and a diameter of 80 mm was supported from the inner surface by a cylindrical support on the outer surface of the nickel electroformed tube.
Dry blasting is performed using 60 μm alumina particles to form a substrate. The blasting conditions were as follows: the rotational speed of the nickel electroformed tube was 240 rpm (approximately 60.000 mm / min), the medium spraying pressure was 3 kgf / cm 2 , the distance between the outer surface of the nickel electroformed tube and the tip of the media injection nozzle was 80 mm, The medium spraying processing speed in the direction perpendicular to the rotation was 10 mm / sec.
【００１３】このようにして得られたニッケル電鋳管か
らなる各基体の表面粗さ，ブラスト加工による変形の程
度，表面の濡れ性を調べた。続いて、各基体上に電荷発
生層，電荷輸送層を塗布形成して感光体を作製し、基体
との密着性を調べた。また、このようにして得られた各
感光体を市販の半導体レーザープリンターに搭載して画
像出しを行い、干渉縞模様の発生状況を調べた。それら
の調査結果を表１に示す。表１において、濡れ性は、温
度２３℃±２℃で７２０μＮ／ｃｍ以上を○印，５００
μＮ／ｃｍ以上を△印，３６０μＮ／ｃｍ以下を×印で
示してある。なお、表１には比較のために、ブラスト加
工を施してないニッケル電鋳管をそのまま基体とした場
合についても同様に評価して非処理として示してある。The surface roughness, the degree of deformation by blasting, and the wettability of the surface of each of the thus obtained nickel electroformed tubes were examined. Subsequently, a charge generation layer and a charge transport layer were applied and formed on each substrate to prepare a photoreceptor, and the adhesion to the substrate was examined. Each of the photoconductors thus obtained was mounted on a commercially available semiconductor laser printer to perform image formation, and the occurrence of interference fringes was examined. Table 1 shows the results of those investigations. In Table 1, the wettability was 720 µN / cm or more at a temperature of 23 ° C ± 2 ° C,
μN / cm or more is indicated by Δ, and 360 μN / cm or less is indicated by X. For comparison, Table 1 also shows that a nickel electroformed tube not subjected to blasting was used as a substrate as it was as a non-processed sample.
【００１４】[0014]
【表１】 [Table 1]
【００１５】表１に見られるように、ブラスト加工非処
理では表面粗さが小さくて光干渉が発生し、濡れ性，密
着性も良くない。肉厚２０μｍの基体ではブラスト加工
による変形が生じて望ましくない。肉厚１２０μｍの基
体ではブラスト加工メディア径を３０μｍ以上とするこ
とにより上記の評価項目では良好な結果が得られるが、
弾性が乏しくなりベルトとして使用するにはあまり適さ
なくなる。また、ニッケル電鋳管コスト，メディアコス
トが高くなるので好ましくない。肉厚３０μｍ〜１００
μｍのニッケル電鋳管を用い、５μｍ〜５０μｍの径の
メディアによりブラスト加工することにより、表面粗さ
がＲz で０．３μｍ〜２μｍと適切な粗さとなり、良好
な濡れ性，密着性を示す基体が得られ、この基体を用い
ることにより、画像干渉縞模様が発生しない優れたＯＰ
Ｃが作製できることが判る。As can be seen from Table 1, when blasting is not performed, the surface roughness is small and light interference occurs, and the wettability and adhesion are not good. A substrate having a thickness of 20 μm is not desirable because deformation due to blasting occurs. With a base having a thickness of 120 μm, good results can be obtained with the above evaluation items by setting the blasting media diameter to 30 μm or more.
Poor elasticity makes it less suitable for use as a belt. Further, it is not preferable because the cost of the nickel electroformed tube and the cost of the media increase. Wall thickness 30 μm-100
a nickel electroformed tube [mu] m, by blasting with media in the diameter of 5 m to 50 m, the surface roughness becomes 0.3μm~2μm and appropriate roughness R z, good wettability, adhesion An excellent OP having no image interference fringe pattern is obtained by using this substrate.
It turns out that C can be manufactured.
【００１６】[0016]
【発明の効果】この発明によれば、感光体の基体とし
て、肉厚３０μｍないし１００μｍのニッケル電鋳管か
らなり、その外表面の表面粗さが十点平均粗さＲZ で
０．３μｍないし２μｍとなるように乾式ブラスト加工
により粗面化処理が施されている基体を用いることによ
り、長波長単色可干渉光を露光光とする電子写真技術応
用装置に用いても画像に干渉縞模様の発生せず、かつ、
温湿度環境が大幅に変動しても特性変動が少なくて画像
品質の安定した高品質のベルトタイプのＯＰＣを、低価
格で作製することが可能となる。Effects of the Invention According to the present invention, as the substrate of the photoreceptor, to no thickness 30μm made of nickel electroformed tube 100 [mu] m, to the surface roughness of the outer surface is not 0.3μm in ten-point mean roughness R Z By using a substrate which has been subjected to a roughening treatment by dry blasting so as to have a thickness of 2 μm, an image having interference fringe patterns can be formed on an image even when used in an electrophotographic technology application device using long wavelength monochromatic coherent light as exposure light. Does not occur, and
Even if the temperature and humidity environment fluctuates greatly, it is possible to produce a high-quality belt-type OPC with stable image quality with little characteristic fluctuation at a low price.
Claims (4)
電鋳管からなり、その外表面の表面粗さが十点平均粗さ
ＲZ で０．３μｍないし２μｍとなるように乾式ブラス
ト加工により粗面化処理が施されていることを特徴とす
る電子写真感光体用基体。1. A to no thickness 30μm made of nickel electroformed tube 100 [mu] m, 0.3 [mu] m to roughened by dry blasting such that the 2μm in its surface roughness of the outer surface ten-point average roughness R Z A substrate for an electrophotographic photosensitive member, which has been subjected to a treatment.
て５００μＮ／ｃｍ以上であることを特徴とする請求項
１記載の電子写真感光体用基体。2. The substrate for an electrophotographic photosensitive member according to claim 1, wherein the wettability of the outer surface is 500 μN / cm or more at a temperature of 23 ° C. ± 2 ° C.
電鋳管外表面に平均粒径５μｍないし５０μｍのアルミ
ナ粒子またはジルコニア粒子を用いて乾式ブラスト加工
を施して表面粗さが十点平均粗さＲZ で０．３μｍない
し２μｍになるようにあらすことを特徴とする電子写真
感光体用基体の製造方法。3. An outer surface of a nickel electroformed pipe having a thickness of 30 to 100 μm is subjected to dry blasting using alumina particles or zirconia particles having an average particle size of 5 to 50 μm to obtain a ten-point average roughness R Z. A method for producing a substrate for an electrophotographic photoreceptor, wherein the thickness of the substrate is reduced to 0.3 μm to 2 μm.
電鋳管からなり、その外表面の表面粗さが十点平均粗さ
ＲZ で０．３μｍないし２μｍとなるように乾式ブラス
ト加工により粗面化処理が施された基体を用いたことを
特徴とする電子写真用感光体。4. to no thickness 30μm made of nickel electroformed tube 100 [mu] m, 0.3 [mu] m to roughened by dry blasting such that the 2μm surface roughness ten-point mean roughness R Z of the outer surface A photoconductor for electrophotography, comprising using a treated substrate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP37220299A JP2001188374A (en) | 1999-12-28 | 1999-12-28 | Substrate for electrophotographic photoreceptor, its producing method and electrophotographic photoreceptor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP37220299A JP2001188374A (en) | 1999-12-28 | 1999-12-28 | Substrate for electrophotographic photoreceptor, its producing method and electrophotographic photoreceptor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2001188374A true JP2001188374A (en) | 2001-07-10 |
Family
ID=18500035
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP37220299A Withdrawn JP2001188374A (en) | 1999-12-28 | 1999-12-28 | Substrate for electrophotographic photoreceptor, its producing method and electrophotographic photoreceptor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2001188374A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7558507B2 (en) | 2002-03-26 | 2009-07-07 | Brother Kogyo Kabushiki Kaisha | Image forming apparatus, and pressure fogging prevention |
-
1999
- 1999-12-28 JP JP37220299A patent/JP2001188374A/en not_active Withdrawn
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7558507B2 (en) | 2002-03-26 | 2009-07-07 | Brother Kogyo Kabushiki Kaisha | Image forming apparatus, and pressure fogging prevention |
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