JPH03235961A - Selenium photosensitive drum for electrophotography - Google Patents
Selenium photosensitive drum for electrophotographyInfo
- Publication number
- JPH03235961A JPH03235961A JP3213690A JP3213690A JPH03235961A JP H03235961 A JPH03235961 A JP H03235961A JP 3213690 A JP3213690 A JP 3213690A JP 3213690 A JP3213690 A JP 3213690A JP H03235961 A JPH03235961 A JP H03235961A
- Authority
- JP
- Japan
- Prior art keywords
- photosensitive drum
- photosensitive
- parts
- roller
- selenium
- 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
- BUGBHKTXTAQXES-UHFFFAOYSA-N Selenium Chemical compound [Se] BUGBHKTXTAQXES-UHFFFAOYSA-N 0.000 title claims abstract description 17
- 229910052711 selenium Inorganic materials 0.000 title claims abstract description 17
- 239000011669 selenium Substances 0.000 title claims abstract description 17
- 239000000463 material Substances 0.000 claims abstract description 6
- 229910000838 Al alloy Inorganic materials 0.000 claims abstract 2
- 229910052782 aluminium Inorganic materials 0.000 claims abstract 2
- 239000000758 substrate Substances 0.000 claims description 5
- 108091008695 photoreceptors Proteins 0.000 claims description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims 1
- 229910017000 As2Se3 Inorganic materials 0.000 abstract description 7
- 239000010410 layer Substances 0.000 description 21
- 239000010408 film Substances 0.000 description 8
- 238000000034 method Methods 0.000 description 7
- 229910045601 alloy Inorganic materials 0.000 description 6
- 239000000956 alloy Substances 0.000 description 6
- 230000000873 masking effect Effects 0.000 description 4
- 238000004140 cleaning Methods 0.000 description 3
- 229920005177 Duracon® POM Polymers 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 238000007740 vapor deposition Methods 0.000 description 2
- 229910001020 Au alloy Inorganic materials 0.000 description 1
- 239000004809 Teflon Substances 0.000 description 1
- 229920006362 Teflon® Polymers 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 239000012670 alkaline solution Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004512 die casting Methods 0.000 description 1
- 210000005069 ears Anatomy 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003353 gold alloy Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 230000036961 partial effect Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000002829 reductive effect Effects 0.000 description 1
- 238000007790 scraping Methods 0.000 description 1
- 239000002356 single layer Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
Landscapes
- Photoreceptors In Electrophotography (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
この発明は、コロ受は現像機仕様の電子写真応用装置に
好適に用いられる電子写真用セレン感光ドラムに関する
。DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a selenium photosensitive drum for electrophotography, which is suitably used in an electrophotographic application device in which the roller receiver is a developing machine.
電子写真応用装置１例えば普通紙複写機にふいては、通
常、円筒状導電性基体の外表面に感光層の形成された電
子写真用感光体、いわゆる感光ドラムを用い、この感光
ドラムの外周に沿って帯電機、露光機、現像機、転写機
構、クリーニング機構、除電機などを配置し、感光ドラ
ムを回転させて、繰り返し画像出しを行う。□得られる
出力画像の画質は使用される感光ドラムの電気特性、ト
ナー特性に大きく左右されるが、現像時の感光ドラムの
感光層表面へのトナー粒子の接触状態１例えば磁気ブラ
シ現像方式の場合には磁気ブラシ゛の穂のあたり方にも
影響される。このような状態を一定とするために、感光
ドラム表面と磁気ブラシとの距離、従って磁気ブラシを
形成し保持している現像機との距離を精度良く一定に保
つことが重要となる。Electrophotographic application device 1 For example, in a plain paper copying machine, an electrophotographic photoreceptor, a so-called photoreceptor drum, having a photosensitive layer formed on the outer surface of a cylindrical conductive substrate is usually used. A charging machine, an exposure machine, a developing machine, a transfer mechanism, a cleaning mechanism, a static eliminator, etc. are arranged along the drum, and the photosensitive drum is rotated to repeatedly produce images. □The quality of the resulting output image largely depends on the electrical characteristics of the photosensitive drum used and the characteristics of the toner, but the contact state of toner particles with the surface of the photosensitive layer of the photosensitive drum during development 1For example, in the case of magnetic brush development method It is also affected by the way the magnetic brush's ears touch. In order to keep this state constant, it is important to keep the distance between the photosensitive drum surface and the magnetic brush, and therefore the distance from the developing device that forms and holds the magnetic brush, constant with high precision.
従来、電子写真応用装置へ感光ドラムを取り付は回転さ
せるには、感光ドラムの両端にへｌダイキャストまたは
樹脂モールドで作製したフランジを圧入、ネジ止めなど
で固定し、装置内で現像機と所要の関係位置に設けられ
ている回転シャフトにフランジを介して感光ドラ五を取
り付け、回転シャフトにより回転させる方法が一般に採
られている。この場合には、回転シャフトの蕊振れを少
なくシ、感光ドラム、フランジの寸法精度を高めること
により、回転時の感光ドラムの蕊振れを防ぎ、感光ドラ
ム表面と現像機との距離を一定に保つようにしていた。Conventionally, in order to install and rotate a photosensitive drum in an electrophotographic application device, flanges made by die-casting or resin molding are press-fitted or screwed onto both ends of the photosensitive drum, and the developing machine and the like are fixed inside the device. Generally, a method is adopted in which a photosensitive drum 5 is attached via a flange to a rotating shaft provided at a required position, and the photosensitive drum 5 is rotated by the rotating shaft. In this case, by reducing the vibration of the rotating shaft and increasing the dimensional accuracy of the photosensitive drum and flange, vibration of the photosensitive drum during rotation can be prevented and the distance between the photosensitive drum surface and the developing machine can be kept constant. That's what I was doing.
また、第１図に示すような磁気ブラシ現像方式のコロ受
は現像機を用いて、感光ドラムの両端部の感光層未形成
部をコロで受け、コロを介して感光ドラムを回転させる
方法も行われている。第１図（ａ）は現像機の概念的な
斜視図で、コロ受は現像機の両端部より延びているコロ
支持部１ａ上にコロ１ｂがコロの回転軸と磁気ブラシの
回転軸とが平行となるように配設されている。第１図ら
）はコロ受は現像機１のコロ１ｂで感光ドラムを受けた
状態を示す側面図で、このような状態でコロ１ｂを矢印
Ａの方向に回転させると（回転機構は図示してない）感
光ドラム２はその表面を衝にして矢印Ｂの方向に回転す
る。第１図（Ｃ）は感光ドラム２をコロｌｌ）で受けた
状態を示す要部部分斜視図で、感光ドラム２はその端部
の感光層未形成部２ｂでコロ１ｂに受けられ、コロ１ｂ
と接触した状態で回転する。この方法においては、感光
ドラムはその表面を衝として現像機に付設されたコロ上
で回転するので、感光ドラム表面と磁気ブラシとの距離
は精度良く一定に保たれる。In addition, as shown in Fig. 1, the magnetic brush development type roller receiver uses a developing machine to receive the areas where no photosensitive layer is formed at both ends of the photosensitive drum, and rotates the photosensitive drum via the rollers. It is being done. FIG. 1(a) is a conceptual perspective view of the developing machine, in which a roller 1b is mounted on a roller supporting portion 1a extending from both ends of the developing machine, and the roller 1b is connected to the roller rotation axis and the magnetic brush rotation axis. They are arranged parallel to each other. Figure 1 and others) are side views showing the state in which the roller receiver receives the photosensitive drum with the roller 1b of the developing machine 1. In this state, when the roller 1b is rotated in the direction of arrow A (the rotation mechanism is not shown). (No) The photosensitive drum 2 rotates in the direction of arrow B with its surface facing up. FIG. 1(C) is a partial perspective view showing a state in which the photosensitive drum 2 is received by the roller 1b.
rotates while in contact with. In this method, since the photosensitive drum rotates on a roller attached to a developing machine with its surface as an opposition, the distance between the photosensitive drum surface and the magnetic brush is kept constant with high precision.
セレン系光導電性材料を用いた感光層を備えたセレン感
光ドラムでは通常導電性基体としてＡ１または／Ｖ金合
金らなる円筒管が用いられる。In a selenium photosensitive drum having a photosensitive layer using a selenium-based photoconductive material, a cylindrical tube made of A1 or /V gold alloy is usually used as the conductive substrate.
上述の前者の方法の場合、基体を寸法精度良く加工し、
かつ、その精度を維持することはかなり難しい。また、
フランジを寸法精度良く作製すること２回転シャフトの
蕊振れを少なくすることも難しく、これらの精度の合わ
さって決まる感光ドラム表面と磁気ブラシとの距離のば
らつきを少なくすることは難しい。さらにフランジを用
いることによるコストアップもある。In the case of the former method mentioned above, the substrate is processed with high dimensional accuracy,
Moreover, maintaining that accuracy is quite difficult. Also,
It is difficult to manufacture the flange with high dimensional accuracy and to reduce the vibration of the two-rotation shaft, and it is also difficult to reduce the variation in the distance between the photosensitive drum surface and the magnetic brush, which is determined by the combination of these precisions. Furthermore, the use of flanges also increases costs.
後者の方法の場合には、感光ドラムの表面を衝としてい
るので、感光ドラム表面と磁気ブラシとの距離のばらつ
きは前者に比べて大幅に低減できる。しかし、この場合
には、ジュラコンなどの強化樹脂およびＳＵＳなどを材
料とするコロに、感光ドラムの感光層未形成部、すなわ
ちＡｆｆまたはＡ１合金からなる円筒管面が接触して回
転するために、硬度的により低い円筒管面が削られてく
るという問題がある。円筒管表面に硬質アルマイトを行
うと耐久性は向上するが、感光層を形成すべき領域に悪
影響を与えることなく円筒管両端部に硬質アルマイト処
理を行うことは煩雑で難しく、洗浄液（アルカリ性溶液
）や円筒管の加熱温度も制約されて品質的にも問題があ
り、さらにアルマイト処理の費用がかかるという問題も
あった。In the case of the latter method, since the surface of the photosensitive drum is used as the opposite, variations in the distance between the photosensitive drum surface and the magnetic brush can be significantly reduced compared to the former method. However, in this case, the portion of the photosensitive drum where the photosensitive layer is not formed, that is, the cylindrical tube surface made of Aff or A1 alloy contacts and rotates the roller made of reinforced resin such as Duracon, SUS, etc. There is a problem that the cylindrical tube surface, which has a lower hardness, is ground away. Hard alumite treatment on the surface of the cylindrical tube improves durability, but hard alumite treatment on both ends of the cylindrical tube without adversely affecting the area where the photosensitive layer is to be formed is complicated and difficult, and cleaning solution (alkaline solution) is required. The heating temperature of the cylindrical tube is also limited, which poses a quality problem, and there is also the problem that the alumite treatment is expensive.
この発明は、上述の点に鑑みてなされたものであって、
コロ受は現像機仕様の電子写真応用装置に好適に用いら
れる、コロと接触する感光層未形成部の損耗がなくて耐
久性の優れたセレン感光ドラムを提供することを解決す
べき課題とする。This invention was made in view of the above points, and
The problem to be solved is to provide a selenium photosensitive drum that is suitable for use in an electrophotographic application device with a developing machine specification, and which has excellent durability and is free from wear and tear on the part where the photosensitive layer is not formed in contact with the roller. .
上記の課題は、この発明によれば、Ａ１またはＡ１合金
からなる円筒状基体の外表面にセレン系光導電性材料か
らなる感光層を備えた電子写真用セレン感光ドラムにお
いて、感光ドラムの両端部に設けられている感光層未形
成部にＡｓ２Ｓｅ３膜が形成された電子写真用セレン感
光ドラムとすることによって解決される。According to the present invention, the above problem can be solved in a selenium photosensitive drum for electrophotography, which has a photosensitive layer made of a selenium-based photoconductive material on the outer surface of a cylindrical substrate made of A1 or an A1 alloy. This problem can be solved by providing a selenium photosensitive drum for electrophotography in which an As2Se3 film is formed on the portion where the photosensitive layer is not formed.
コロ受は現像機のコロの材料として用いられるジュラコ
ンなどのビッカース硬度は９０ｔｌｖ〜１００Ｈｖであ
る。一方、Ａｓ２５ｅｓのビッカース硬度は１０ＱＨｖ
〜１３０Ｈｖである。感光層未形成部にＡｓ２Ｓｅ３膜
を形成したセレン感光ドラムを用い、Ａｓ２Ｓｅ３膜の
部分をコロ受は現像機のコロで受けることにより、セレ
ン感光ドラムがコロと接触して回転しても接触部が削ら
れることはなくなり、セレン感光ドラム表面と磁気ブラ
シとの距離を精度良く一定に保つことが可能となる。The roller receiver is made of Duracon, which is used as a material for the rollers of a developing machine, and has a Vickers hardness of 90 tlv to 100 Hv. On the other hand, the Vickers hardness of As25es is 10QHv
~130Hv. By using a selenium photosensitive drum with an As2Se3 film formed on the part where the photosensitive layer is not formed, the roller receiver receives the As2Se3 film part with the rollers of the developing machine, so that even if the selenium photosensitive drum contacts the roller and rotates, the contact part will not be removed. Scraping is eliminated, and the distance between the selenium photosensitive drum surface and the magnetic brush can be kept constant with high precision.
実施例１
所要の機械加工、洗浄を施したΔβ合金円筒管の両端に
ＳＯ５からなるマスキング部材を装着して円筒管表面を
端部からそれぞれ１０ｍｍマスクし、真空装置の温度制
御可能な回転支持軸に取り付け、円筒管を約６０℃の温
度とし、Ｉ Ｘｌ０−’Ｔｏｒｒの真空中でセレン系材
料を真空蒸着して感光層（単層構造あるいは機能分離型
積層構造いずれでもよい）を形成した。次にマスク部材
を取りはずし、感光層表面を清浄なテフロンシートで覆
った状態で、円筒管両端に露呈している幅１０＋ｎｍの
感光層未形成部に、同様にしてＡｓ２Ｓｅ３３を膜厚５
μｍに蒸着して感光ドラムとした。Example 1 Masking members made of SO5 were attached to both ends of a Δβ alloy cylindrical tube that had undergone the necessary machining and cleaning, and the cylindrical tube surface was masked by 10 mm from each end to form a temperature-controllable rotary support shaft for a vacuum device. The temperature of the cylindrical tube was set at about 60° C., and a selenium-based material was vacuum-deposited in a vacuum of I Xl0-'Torr to form a photosensitive layer (either a single-layer structure or a functionally separated laminated structure). Next, remove the mask member, cover the surface of the photosensitive layer with a clean Teflon sheet, and apply a film of As2Se33 to a thickness of 5 nm on the 10+ nm wide exposed areas at both ends of the cylindrical tube.
A photosensitive drum was prepared by vapor deposition to a thickness of μm.
実施例２
実施例１と同様にＡ１合金円筒管にマスキング部材でマ
スクしたがζマスキング部材として内径が実施例１より
大きいものを用い、マスキング部材内径と円筒管表面と
の間に２ｍｌ１１均一のクリアランスが形成された状態
とし、Ｉ Ｘｌ０−’Ｔｏｒｒの真空内でＡｓ２Ｓｅ３
を円筒管表面に膜厚５５μｍに蒸着して感光層を形成し
感光ドラムとした。この感光ドラムの感光層未形成部を
つくるためにマスキングした両端の領域には膜厚的４μ
ｍのＡｓ２Ｓｅ３薄膜が形成されていた。Example 2 Similar to Example 1, an A1 alloy cylindrical tube was masked with a masking member, but a ζ masking member with an inner diameter larger than that of Example 1 was used, and a uniform clearance of 2ml11 was created between the masking member's inner diameter and the surface of the cylindrical tube. As2Se3 is formed in a vacuum of IXl0-'Torr.
was vapor-deposited on the surface of a cylindrical tube to a thickness of 55 μm to form a photosensitive layer to form a photosensitive drum. The film thickness is 4 μm on both ends of the photosensitive drum, which were masked to create areas where the photosensitive layer is not formed.
An As2Se3 thin film of m was formed.
比較例
実施例１と同様にして感光層を形成し、その後の感光層
未形成部への八５２Ｓｅ３の蒸着を行わず、へ１合金円
筒管表面がそのまま露呈している従来と同様の感光ドラ
ムを作製した。Comparative Example A photosensitive drum similar to the conventional one, in which a photosensitive layer was formed in the same manner as in Example 1, and the surface of the He1 alloy cylindrical tube was exposed as it was without subsequent vapor deposition of 852Se3 on the areas where the photosensitive layer was not formed. was created.
これらの感光ドラムをコロ受は現像機仕様の普通紙複写
機に取り付け、連続１０万枚のコピーを行ったところ、
比較例の感光ドラムでは、コロに接触する感光層未形成
部のＡ１合金面が損耗し深い傷も発生していた。これに
対して、実施例１および２の感光ドラムにおいてはコロ
に接触する感光層未形成部のへｓ、Ｓｅ３膜表面にはほ
とんど損耗が認められず傷も発生してふらず、得られた
コピーの画質も変化は認められなかった。These photosensitive drums were attached to a plain paper copying machine with roller receiver and developer specifications, and 100,000 copies were made continuously.
In the photosensitive drum of the comparative example, the A1 alloy surface of the portion where the photosensitive layer was not formed, which was in contact with the roller, was worn out and deep scratches were also generated. On the other hand, in the photosensitive drums of Examples 1 and 2, there was almost no wear and tear on the surface of the Hes and Se3 films in the areas where the photosensitive layer was not formed and which were in contact with the rollers, and no scratches were generated. No change was observed in the image quality.
この発明によれば、セレン感光ドラムの両端部に設けら
れている感光層未形成部にＡｓ２Ｓｅ、膜を形成する。According to this invention, an As2Se film is formed on the areas where the photosensitive layer is not formed, which are provided at both ends of the selenium photosensitive drum.
このような感光ドラムをコロ受は現像機仕様の電子写真
応用装置に用い、感光ドラムの感光層未形成部のＡｓ２
Ｓｅ３膜をコロで受けるようにすると、感光ドラムが回
転してもコロとの接触でその表面が損耗することはほと
んどなくなり、感光ドラム表面と磁気ブラシとの距離を
精度良く一定に保つことが可能となり、長期間にわたっ
て良好な画質の出力画像が得られることになる。Such a photosensitive drum is used in an electrophotographic application device with a developing machine specification, and the As2
By allowing the Se3 film to be received by the rollers, even when the photosensitive drum rotates, there is almost no wear on the surface due to contact with the rollers, and it is possible to maintain a constant distance between the photosensitive drum surface and the magnetic brush with high precision. Therefore, output images of good quality can be obtained for a long period of time.
第１図は磁気ブラシ現像方式のコロ受は現像機の一例の
概念図で、第１図（ａ）は現像機の斜視図、第１図（ロ
）は現像機のコロに感光ドラムを受けた状態を示す側面
図、第１図（Ｃ）は感光ドラムをコロで受けた状態の要
部部分斜視図である。
１ 磁気ブラシ方式コロ受は現像機、１ａ コロ支持部
、１ｂ コロ、２ 感光ドラム、２ａ悪感光、２ｂ 感
光層未形成部。
感光層
光層未形成部
６７８−Figure 1 is a conceptual diagram of an example of a developing machine in which the roller receiver of the magnetic brush development method is used. Figure 1 (a) is a perspective view of the developing machine, and Figure 1 (b) is a roller holder of the developing machine that supports the photosensitive drum. FIG. 1(C) is a side view showing a state in which the photosensitive drum is supported by a roller, and a perspective view of a main part thereof. 1 Magnetic brush type roller receiver is a developing machine, 1a roller support part, 1b roller, 2 photosensitive drum, 2a bad exposure, 2b area where photosensitive layer is not formed. Photosensitive layer non-formed area 678-
Claims (1)
状基体の外表面にセレン系光導電性材料からなる感光層
を備えた電子写真用セレン感光ドラムにおいて、感光ド
ラムの両端部に設けられている感光層未形成部にＡｓ＿
２Ｓｅ＿３膜が形成されていることを特徴とする電子写
真用セレン感光体。1) In a selenium photosensitive drum for electrophotography, which has a photosensitive layer made of a selenium-based photoconductive material on the outer surface of a cylindrical substrate made of aluminum or an aluminum alloy, the photosensitive layer is not formed on both ends of the photosensitive drum. Part As_
A selenium photoreceptor for electrophotography, characterized in that a 2Se_3 film is formed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3213690A JPH03235961A (en) | 1990-02-13 | 1990-02-13 | Selenium photosensitive drum for electrophotography |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3213690A JPH03235961A (en) | 1990-02-13 | 1990-02-13 | Selenium photosensitive drum for electrophotography |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH03235961A true JPH03235961A (en) | 1991-10-21 |
Family
ID=12350481
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3213690A Pending JPH03235961A (en) | 1990-02-13 | 1990-02-13 | Selenium photosensitive drum for electrophotography |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH03235961A (en) |
-
1990
- 1990-02-13 JP JP3213690A patent/JPH03235961A/en active Pending
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