JP3489301B2 - Manufacturing method of electrophotographic photoreceptor - Google Patents
Manufacturing method of electrophotographic photoreceptorInfo
- Publication number
- JP3489301B2 JP3489301B2 JP31649295A JP31649295A JP3489301B2 JP 3489301 B2 JP3489301 B2 JP 3489301B2 JP 31649295 A JP31649295 A JP 31649295A JP 31649295 A JP31649295 A JP 31649295A JP 3489301 B2 JP3489301 B2 JP 3489301B2
- Authority
- JP
- Japan
- Prior art keywords
- cutting
- substrate
- oil
- photosensitive member
- unevenness
- 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.)
- Expired - Fee Related
Links
- 238000004519 manufacturing process Methods 0.000 title claims description 9
- 108091008695 photoreceptors Proteins 0.000 title description 13
- 239000000758 substrate Substances 0.000 claims description 30
- 238000005520 cutting process Methods 0.000 claims description 27
- 229910052782 aluminium Inorganic materials 0.000 claims description 13
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 13
- 238000007664 blowing Methods 0.000 claims 1
- 239000003921 oil Substances 0.000 description 12
- 239000010730 cutting oil Substances 0.000 description 10
- 238000000576 coating method Methods 0.000 description 8
- 239000011248 coating agent Substances 0.000 description 7
- 239000000428 dust Substances 0.000 description 7
- 238000005406 washing Methods 0.000 description 7
- 230000007547 defect Effects 0.000 description 5
- 229910003460 diamond Inorganic materials 0.000 description 4
- 239000010432 diamond Substances 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 238000001035 drying Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000000052 comparative effect Effects 0.000 description 2
- 239000000835 fiber Substances 0.000 description 2
- 239000010687 lubricating oil Substances 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 230000002411 adverse Effects 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 239000012459 cleaning agent Substances 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000007598 dipping method Methods 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 239000010721 machine oil Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005555 metalworking Methods 0.000 description 1
- 239000003595 mist Substances 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Photoreceptors In Electrophotography (AREA)
Description
【０００１】[0001]
【発明の属する技術分野】本発明は電子写真用感光体の
製造方法に関するものであり、詳しくは電子写真感光体
用基体に塗布する感光層の特に第１層目を均一に塗布で
きるような表面性を基体に持たせ、画像欠陥の発生を低
減させた電子写真感光体の製造方法に関するものであ
る。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for producing an electrophotographic photoconductor, and more particularly, to a surface on which the first layer of the photosensitive layer applied to the electrophotographic photoconductor substrate can be uniformly applied. The present invention relates to a method for manufacturing an electrophotographic photosensitive member in which the substrate is provided with the properties to reduce the occurrence of image defects.
【０００２】[0002]
【従来の技術】電子写真感光体は、一般に、アルミニウ
ム製ドラムの外周面に感光材料を塗布してなるが、斯か
る感光体用の基体としてはアルミニウムの円筒体を旋盤
により一定の粗さに加工された基体を用いる。さらにこ
れに第１層として電荷発生層、第２層として電荷輸送層
が感光層として設けられるのが一般的である。斯かる感
光体を製造する際、電荷発生層を塗布する直前に感光体
用基体を有機溶媒や水系洗浄剤で洗浄して、表面のゴミ
や汚れを落とすほか、表面性を均一にして第一層の塗布
性を向上させ、均一な塗布が可能になるよう工夫されて
いる。2. Description of the Related Art An electrophotographic photosensitive member is generally formed by coating a photosensitive material on the outer peripheral surface of an aluminum drum. As a base member for such an photosensitive member, an aluminum cylinder is made to have a certain roughness by a lathe. A processed substrate is used. Further, a charge generation layer as the first layer and a charge transport layer as the second layer are generally provided thereon as the photosensitive layer. In producing such a photoreceptor, immediately before applying the charge generation layer, the photoreceptor substrate is washed with an organic solvent or a water-based cleaning agent to remove dust and dirt on the surface and to make the surface property uniform. It is devised to improve the coatability of the layer and enable uniform coating.
【０００３】[0003]
【発明が解決しようとする課題】しかしながら、近年の
感光体は高画質化、高感度化が進んでおり、たとえば感
光体用基体の表面の均質性が少しでも失われたりすると
画質への影響が問題となる場合が多くなってきた。特
に、感光体用基体の表面は切削加工後のゴミや油などが
付着しており、これが感光層を塗布する前に洗浄しきれ
ないまま残ると感光体の塗布ムラを生じたり、そうでな
い場合でも電荷のリーク等のもととなり画質に影響を及
ぼす。However, in recent years, photoconductors have been improved in image quality and sensitivity, and for example, if the homogeneity of the surface of the photoconductor substrate is lost, the image quality is adversely affected. There are more and more problems. In particular, the surface of the substrate for the photoconductor has dust and oil attached after cutting, and if it remains unwashed before applying the photoconductor layer, uneven coating of the photoconductor may occur, or otherwise. However, it may cause leakage of electric charge and affect the image quality.
【０００４】また、感光体用基体は一般的にアルミニウ
ム円筒体を旋盤にて切削加工して仕上げる場合が多く、
その旋盤が機械用油や潤滑油などを使用しているため、
切削加工時に基体表面に吹き付ける切削油にミストが混
入し、感光体にムラを生じさせたりし、ひどい場合には
洗浄後にも取れずに残ってしまい、感光体の塗布ムラの
原因となる。In general, the substrate for the photosensitive member is often finished by cutting an aluminum cylinder with a lathe.
Because the lathe uses machine oil and lubricating oil,
Mist is mixed in the cutting oil sprayed on the surface of the substrate during cutting, causing unevenness on the photoconductor, and in severe cases, it remains without being removed even after washing, which causes uneven coating on the photoconductor.
【０００５】斯かる表面の異物などを除去するのは基体
の切削加工後、数日以上経過してから塗布する直前に洗
浄して除去するのが一般的であるが、先に述べた感光体
の高性能化によりゴミの付着した部分や、油の残った部
分の表面の変質が影響することもある。本発明は上記の
実状に鑑みてなされたものであり、その目的は低コスト
で表面の変質のない電子写真感光体用基体を提供するこ
とにある。It is general to remove such foreign matter on the surface by washing and removing a few days or more after cutting the substrate and immediately before coating. Due to the higher performance of, the deterioration of the surface of the part where dust is attached or the part where oil remains may have an effect. The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a substrate for an electrophotographic photoreceptor, which is low in cost and has no surface alteration.
【０００６】[0006]
【課題を解決するための手段】本発明者らは上記の課題
を解決すべく種々検討を重ねた結果、感光体用基体を製
造する際、その直後に油により洗浄することで簡単に表
面の均質性を得ることができることを見出し、本発明に
到達した。すなわち本発明の要旨は、電子写真感光体の
製造方法において、基体用アルミニウム円筒体を切削加
工し、該加工後３０分以内に油で洗浄し、その後感光層
を塗布することを特徴とする電子写真感光体の製造方法
に存する。As a result of various studies to solve the above-mentioned problems, the present inventors have found that when a substrate for a photoreceptor is manufactured, the surface of the substrate can be easily cleaned by washing with oil immediately after that. The inventors have found that homogeneity can be obtained and have reached the present invention. That is, the gist of the present invention is, in the method for producing an electrophotographic photosensitive member, an aluminum cylinder for a substrate is cut, washed with oil within 30 minutes after the processing, and then a photosensitive layer is applied. It exists in the method of manufacturing a photographic photoreceptor.
【０００７】[0007]
【発明の実施の形態】以下、本発明を詳細に説明する。
本発明の電子写真感光体用基体は、アルミニウム円筒体
を旋盤による切削加工により製造されるものである。こ
ういった切削加工では加工時、特に表面の仕上げ加工を
行うときに微細な加工屑（切粉）を伴う。この加工屑は
切削後、周囲から付着する繊維屑などのゴミと一緒に凝
集を起こし、最大直径約０．５〜５ミリくらいの大きさ
の油の乾燥ムラのもとになる。このムラは特に鏡面加工
された基体では光の反射や冷気テストによる表面の結露
状態で簡単に確認できる。こういったムラは油の乾燥痕
として切削屑や繊維屑が付着している場合が殆どであ
る。このムラは通常感光体塗布直前に洗浄により除去さ
れるが、切削加工後ある程度時間の過ぎたムラについて
は表面の塗れ性が変化したり、塗布後電荷に対する性能
が周りとは変化してしまうことで、画像への影響が単に
洗浄だけでは取りきれなくなってしまう。BEST MODE FOR CARRYING OUT THE INVENTION The present invention will be described in detail below.
The electrophotographic photoreceptor substrate of the present invention is manufactured by cutting an aluminum cylinder with a lathe. In such a cutting process, fine processing chips (cutting chips) are involved during processing, particularly when performing surface finishing. After cutting, this processing waste agglomerates together with dust such as fiber waste attached from the surroundings, and causes uneven drying of oil having a maximum diameter of about 0.5 to 5 mm. This unevenness can be easily confirmed by light reflection and dew condensation on the surface by a cold air test, especially on a mirror-finished substrate. In most cases, such unevenness is caused by cutting chips and fiber chips as drying marks of oil. This unevenness is usually removed by washing immediately before coating the photoreceptor, but for unevenness that has passed a certain amount of time after cutting, the wettability of the surface may change, and the performance with respect to charge after application may change from the surroundings. Then, the effect on the image cannot be completely removed by just washing.
【０００８】また、異種の油の混入の問題については、
アルミニウムを加工する旋盤が、必ずしもきれいでない
ということがあり、切削油の吹き付け時に一般的に切削
油に比べ粘度の高い機械用油や潤滑油が基体表面に残っ
てしまい、ひどい場合には時間が経つと洗浄でもとれな
くなってしまったり、ゴミの乾燥ムラと同様塗布後電荷
に対する基体表面の性状が変化してしまうことがある。
加えて、引抜き時に使用する引抜き油についても、切削
加工時に何らかの原因で表面に転移し、付着するような
ことがあれば同様の影響を及ぼすことがわかっている。
本発明者らはこの画像に影響を及ぼすムラの原因を切削
屑や周囲のゴミ、または切削油と異なる油の付着を主原
因とする基体表面の性状変化と考え、ムラの発生メカニ
ズムを観察した。その結果、切削直後の基体上で切削屑
や外周から付着するゴミが凝集し、ムラを形成すること
がわかり、さらにこのムラは周囲の小さな切削屑を凝集
し、約１時間もすると表面に固着したようになることが
わかった。そこで、切削直後に基体を洗浄すると基体表
面のムラが激減し、感光体塗布後の電子写真感光体の画
像のムラもなくなることを発見し、本発明を完成するに
至った。Regarding the problem of mixing different types of oil,
Since the lathe that processes aluminum is not always clean, mechanical oil and lubricating oil, which generally have higher viscosity than cutting oil, remain on the surface of the substrate when the cutting oil is sprayed. After that, it may not be able to be removed by washing, or the property of the surface of the substrate with respect to the charge after application may change, like the uneven drying of dust.
In addition, it has been known that the drawing oil used during drawing also has the same effect if it is transferred to the surface and attached to the surface for some reason during cutting.
The inventors considered that the cause of the unevenness that affects the image was a change in the properties of the substrate surface, which was mainly caused by the adhesion of cutting chips, surrounding dust, or oil different from the cutting oil, and observed the mechanism of occurrence of unevenness. . As a result, it was found that cutting debris and dust adhering from the outer circumference aggregated on the substrate immediately after cutting to form unevenness, and this unevenness also agglomerated small surrounding cutting debris and stuck to the surface after about 1 hour. I knew it would be. Therefore, it was discovered that cleaning the substrate immediately after cutting drastically reduces the unevenness of the surface of the substrate and eliminates the unevenness of the image of the electrophotographic photosensitive member after coating the photosensitive member, thus completing the present invention.
【０００９】本発明では基体用アルミニウム円筒体を切
削加工後３０分以内、好ましくは１５分以内に油にて洗
浄することにより、切削屑によるムラのない表面性状の
安定した感光体用基体を得る。得られた基体上に塗布す
る感光層は、通常、電荷発生層および電荷輸送層からな
り、各々の厚みは通常０．１〜３μｍ、１０〜５０μｍ
である。塗布方法は特に限定されず、浸漬法、スプレー
法等が採用できる。In the present invention, the aluminum base body for a substrate is washed with oil within 30 minutes, preferably within 15 minutes after cutting to obtain a substrate for a photosensitive body having a stable surface property free from cutting chips. . The photosensitive layer coated on the obtained substrate is usually composed of a charge generation layer and a charge transport layer, and the thickness of each is usually 0.1 to 3 μm, 10 to 50 μm.
Is. The coating method is not particularly limited, and a dipping method, a spray method or the like can be adopted.
【００１０】[0010]
【実施例】以下に本発明の製造方法を利用して製造され
た感光体の性能についての実施例を記載する。
実施例１
電子写真感光体用基体として直径５０ｍｍ、長さ２４８
ｍｍ、肉厚１．２５ｍｍのアルミ製引抜管を切削油
（「エクソールＤ−１１０」エクソン化学（株）製）を
用いてダイヤモンドバイトにて鏡面加工し、加工直後そ
のまま旋盤上でドラムを３０００ｒｐｍで回転させなが
ら同じ切削油を吹き付け洗浄した。その１週間した後、
電荷発生層、電荷輸送層をその順に塗布して電子写真感
光体を得た。EXAMPLES Examples of the performance of the photoconductors manufactured by using the manufacturing method of the present invention will be described below. Example 1 As a substrate for an electrophotographic photosensitive member, a diameter of 50 mm and a length of 248
mm, 1.25 mm thick aluminum drawn pipe was mirror-finished with a diamond cutting tool using cutting oil ("Exol D-110" manufactured by Exxon Chemical Co., Ltd.), and the drum was left on the lathe at 3000 rpm immediately after processing. The same cutting oil was sprayed and washed while rotating. After that one week,
A charge generation layer and a charge transport layer were applied in that order to obtain an electrophotographic photoreceptor.
【００１１】実施例２
電子写真感光体用基体として直径５０ｍｍ、長さ２４８
ｍｍ、肉厚１．２５ｍｍのアルミ製引抜管を切削油
（「エクソールＤ−１１０」エクソン化学（株）製）を
用いてダイヤモンドバイトにて鏡面加工し、切削後１５
分経ってからさらに切削油にて洗浄したものを１週間後
に電荷発生層、電荷輸送層をその順に塗布して電子写真
感光体を得た。Example 2 As a substrate for an electrophotographic photosensitive member, a diameter of 50 mm and a length of 248
mm, with a wall thickness of 1.25 mm, made from aluminum with a diamond cutting tool using cutting oil (“EXSOL D-110” manufactured by Exxon Chemical Co., Ltd.), and after cutting 15
After a lapse of time, the product was further washed with cutting oil, and after 1 week, a charge generation layer and a charge transport layer were applied in that order to obtain an electrophotographic photoreceptor.
【００１２】実施例３
電子写真感光体用基体として直径５０ｍｍ、長さ２４８
ｍｍ、肉厚１．２５ｍｍのアルミ製引抜管を切削油
（「エクソールＤ−１１０」エクソン化学（株）製）を
用いてダイヤモンドバイトにて鏡面加工し、切削後１５
分経ってからさらに金属加工用油（「メタルワークＥ
Ｄ」日本石油（株）製）にて洗浄したものを１週間後に
電荷発生層、電荷輸送層をその順に塗布して電子写真感
光体を得た。Example 3 As a substrate for an electrophotographic photosensitive member, a diameter of 50 mm and a length of 248
mm, with a wall thickness of 1.25 mm, made from aluminum with a diamond cutting tool using cutting oil (“EXSOL D-110” manufactured by Exxon Chemical Co., Ltd.), and after cutting 15
After a few minutes, metal working oil (“Metalwork E
D ”After washing with Nippon Oil Co., Ltd., one week later, a charge generation layer and a charge transport layer were applied in that order to obtain an electrophotographic photoreceptor.
【００１３】比較例
電子写真感光体用基体として直径５０ｍｍ、長さ２４８
ｍｍ、肉厚１．２５ｍｍのアルミ製引抜管を切削油
（「エクソールＤ−１１０」エクソン化学（株）製）を
用いてダイヤモンドバイトにて鏡面加工したものを洗浄
せずに１週間放置後に電荷発生層、電荷輸送層をその順
に塗布して電子写真感光体を得た。Comparative Example As a substrate for electrophotographic photosensitive member, diameter 50 mm, length 248
mm, thickness 1.25 mm, aluminum drawn tube mirror-finished with diamond cutting tool using cutting oil (“Exol D-110” manufactured by Exxon Chemical Co., Ltd.) The generation layer and the charge transport layer were applied in that order to obtain an electrophotographic photoreceptor.
【００１４】評価
各実施例および比較例で得た電子写真感光体各１０００
本を市販の複写機に取り付けて画像を評価し、画像欠陥
（ムラ）の生じた本数を表１に示す。これによれば実施
例のサンプルは全て画像欠陥の発生数が激減しており、
本発明が画像欠陥（ムラ）に対して有効であることがわ
かった。Evaluation 1000 electrophotographic photoreceptors obtained in each of the examples and comparative examples
The image was evaluated by mounting the book on a commercially available copying machine, and Table 1 shows the number of books with image defects (unevenness). According to this, the number of occurrence of image defects is drastically reduced in all the samples of the examples,
It has been found that the present invention is effective against image defects (unevenness).
【００１５】[0015]
【表１】 [Table 1]
【００１６】[0016]
【発明の効果】本発明方法によると、使用時に画像欠陥
の少ない電子写真感光体を提供することができる。According to the method of the present invention, it is possible to provide an electrophotographic photosensitive member having few image defects during use.
───────────────────────────────────────────────────── フロントページの続き (56)参考文献 特開 昭61−171798（ＪＰ，Ａ) 特開 平７−234528（ＪＰ，Ａ) 特開 平６−324500（ＪＰ，Ａ) 特開 平４−352168（ＪＰ，Ａ) 特開 平４−114167（ＪＰ，Ａ) 特開 平４−108899（ＪＰ，Ａ) (58)調査した分野(Int.Cl.7，ＤＢ名) G03G 5/00 ─────────────────────────────────────────────────── ─── Continuation of the front page (56) Reference JP 61-171798 (JP, A) JP 7-234528 (JP, A) JP 6-324500 (JP, A) JP 4- 352168 (JP, A) JP-A-4-114167 (JP, A) JP-A-4-108899 (JP, A) (58) Fields investigated (Int.Cl. 7 , DB name) G03G 5/00
Claims (2)
体用アルミニウム円筒体を切削加工し、該加工後３０分
以内に切削加工に使用したものと同種の油で洗浄し、そ
の後感光層を塗布することを特徴とする電子写真感光体
の製造方法。1. A method for producing an electrophotographic photosensitive member, wherein an aluminum cylinder for a substrate is cut, and within 30 minutes after the processing , washed with the same oil as that used for the cutting , and then a photosensitive layer is applied. A method of manufacturing an electrophotographic photosensitive member, comprising:
後、切削加工に使用したものと同種の油を使用して吹き
付け洗浄することを特徴とする請求項１記載の電子写真
感光体の製造方法。2. After cutting an aluminum cylinder for a substrate, blowing with the same oil as that used for the cutting.
2. The method for producing an electrophotographic photosensitive member according to claim 1, wherein the electrophotographic photosensitive member is attached and washed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP31649295A JP3489301B2 (en) | 1995-12-05 | 1995-12-05 | Manufacturing method of electrophotographic photoreceptor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP31649295A JP3489301B2 (en) | 1995-12-05 | 1995-12-05 | Manufacturing method of electrophotographic photoreceptor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH09160273A JPH09160273A (en) | 1997-06-20 |
| JP3489301B2 true JP3489301B2 (en) | 2004-01-19 |
Family
ID=18077706
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP31649295A Expired - Fee Related JP3489301B2 (en) | 1995-12-05 | 1995-12-05 | Manufacturing method of electrophotographic photoreceptor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3489301B2 (en) |
-
1995
- 1995-12-05 JP JP31649295A patent/JP3489301B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH09160273A (en) | 1997-06-20 |
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