JP2001125293A - Method of manufacturing photosensitive drum made of aluminum alloy - Google Patents
Method of manufacturing photosensitive drum made of aluminum alloyInfo
- Publication number
- JP2001125293A JP2001125293A JP30290899A JP30290899A JP2001125293A JP 2001125293 A JP2001125293 A JP 2001125293A JP 30290899 A JP30290899 A JP 30290899A JP 30290899 A JP30290899 A JP 30290899A JP 2001125293 A JP2001125293 A JP 2001125293A
- Authority
- JP
- Japan
- Prior art keywords
- polishing
- aluminum alloy
- grindstone
- mpa
- particle size
- 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.)
- Granted
Links
Landscapes
- Photoreceptors In Electrophotography (AREA)
- Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
- Polishing Bodies And Polishing Tools (AREA)
Abstract
Description
【0001】[0001]
【発明の属する技術分野】本発明は、複写機等に用いら
れるアルミ合金製感光ドラムの製造方法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for manufacturing an aluminum alloy photosensitive drum used for a copying machine or the like.
【0002】[0002]
【従来の技術】一般に複写機やプリンター等印刷機の感
光ドラムは、所定径を有するアルミ合金製円筒管の外周
面を鏡面加工して形成される。この鏡面加工の方法とし
ては、従来例えばダイヤモンド切削加工、センタレス研
磨加工、バニシング加工、電解複合研磨加工、又はそれ
らを適宜組み合わせた加工等が知られている。2. Description of the Related Art Generally, a photosensitive drum of a printing machine such as a copying machine or a printer is formed by mirror-finishing the outer peripheral surface of an aluminum alloy cylindrical tube having a predetermined diameter. As a method of the mirror surface processing, conventionally, for example, diamond cutting, centerless polishing, burnishing, electrolytic composite polishing, or a process in which these are appropriately combined are known.
【0003】[0003]
【発明が解決しようとする課題】上記従来の鏡面加工方
法のうち、ダイヤモンド切削加工の場合は、加工コスト
が高く、生産性が悪く、製品歩留まりも悪いこと、表面
にむしれ、かぶさり等の表面欠陥が発生し易く、又真円
度の低下や曲がり等が発生して寸法精度が悪いこと、更
に仕上げ面は反射特性により干渉縞等が生じるため印刷
面が縞状になり易いこと等の問題があった。センタレス
研磨加工の場合は、砥石から脱落した砥粒等により局部
的に深いスクラッチ傷が発生する恐れがあり、研磨加工
の後にバニシング加工を施してもスクラッチ傷は容易に
解消しないという問題があった。バニシング加工の場合
は、円筒管の引き抜き時にしわ、むしれ等が巻き込まれ
て表面に欠陥を含むため、感光ドラムとして使用した際
に印刷欠陥の原因になる等の問題があった。一方、電解
複合研磨加工の場合は、電解作用を行う電極と研磨作用
を行う砥石とが個別に作用し、円筒管に対する複数の砥
石の配置も一部に偏ってむしれ、かぶさり等の表面不良
が生じ易く、真円度等の寸法精度が悪くなり、製品歩留
まりも低下する等の問題があった。このような従来の加
工技術では、円筒管がアルミ合金製であるため軟質であ
り、このためアルミ材特有の加工現象として切削時又は
研磨時にむしれ、かぶさり等による表面不良が発生し易
く、感光ドラムとして要求される品質を到底確保できな
い。Among the above-mentioned conventional mirror finishing methods, in the case of diamond cutting, the processing cost is high, the productivity is low, the product yield is low, and the surface such as the surface is scratched or covered. Defects are easy to occur, dimensional accuracy is poor due to loss of roundness or bending, and the printed surface is likely to be striped due to interference fringes on the finished surface due to reflection characteristics. was there. In the case of the centerless polishing, there is a possibility that deep scratches may locally occur due to abrasive grains falling off from the grindstone, and there is a problem that even if a burnishing is performed after the polishing, the scratch is not easily eliminated. . In the case of burnishing, wrinkles and tears are involved when the cylindrical tube is pulled out, and the surface contains a defect, which causes a problem of causing a printing defect when used as a photosensitive drum. On the other hand, in the case of electrolytic combined polishing, the electrode performing the electrolytic action and the grindstone performing the polishing action act individually, and the arrangement of the plurality of grindstones with respect to the cylindrical tube may be partially biased, and surface defects such as overcasting may occur. Are likely to occur, the dimensional accuracy such as roundness is deteriorated, and the product yield is lowered. In such a conventional processing technique, the cylindrical pipe is made of an aluminum alloy and is therefore soft. Therefore, as a processing phenomenon peculiar to the aluminum material, surface defects such as peeling during covering or polishing, and surface defects such as covering are liable to occur. The quality required for drums cannot be secured at all.
【0004】ところで、電解複合研磨加工で使用される
従来の砥石は、一般的にレジノイド、ビトリファイド砥
石であって、圧縮弾性率Eが相当大きい(E≧5000
MPa)ため目詰まりし易く、連続研磨は不可能であ
る。又、仕上げ用砥石については、圧縮弾性率が比較的
大きい(E=1000MPa)弾性砥石では、スクラッ
チ傷の発生頻度が高く、良好な表面品質が得られず、か
といって圧縮弾性率が小さい(E=5MPa)弾性砥石
では、真円度不良を起こし、研磨面にむらが出るため感
光ドラムとして要求される品質を確保できない。The conventional grindstone used in the electrolytic combined polishing is generally a resinoid or vitrified grindstone, and has a considerably large compression modulus E (E ≧ 5000).
(MPa), it is easily clogged and continuous polishing is impossible. Further, with respect to the finishing whetstone, the elastic whetstone having a relatively large compression elastic modulus (E = 1000 MPa) has a high frequency of occurrence of scratches, does not provide good surface quality, and has a relatively low compression elasticity ( E = 5 MPa) With an elastic grindstone, the roundness is poor and the polished surface is uneven, so that the quality required for the photosensitive drum cannot be secured.
【0005】本発明は、このような従来技術の事態に鑑
みなされたもので、特に電解複合研磨加工に注目し、ア
ルミ合金製円筒管の外周面を、真円度等寸法精度を向上
させる形状加工を行い、且つ表面不良が発生しないよう
に高精度に鏡面加工を行うことにより、OPC感光ドラ
ムとして要求される品質を充分確保すると共に、製品歩
留まりの向上が図れるようにした、感光ドラムの製造方
法を提供することを目的とする。The present invention has been made in view of such a situation in the prior art. In particular, attention is paid to electrolytic composite polishing, and the outer peripheral surface of an aluminum alloy cylindrical tube is shaped to improve dimensional accuracy such as roundness. Manufacturing of photosensitive drums that ensures the quality required for OPC photosensitive drums and improves product yield by performing mirror finishing with high precision so as to prevent surface defects from occurring. The aim is to provide a method.
【0006】[0006]
【課題を解決するための手段】この目的を達成するため
の具体的手段として、本発明は、粒度が♯80〜♯22
0(粒子径180〜53μm)の砥粒を樹脂結合剤で固
着させ、圧縮弾性率が200〜1200MPa、引っ張
り破壊伸びが1.0〜6.0%の砥石を用いてアルミ合
金製円筒管を電解複合研磨により加工する工程を含むこ
と、粒度が♯320〜♯6000(粒子径40〜2.0
μm)の砥粒を樹脂結合剤で固着させ、圧縮弾性率が5
0〜300MPa、引っ張り破壊伸びが1.0〜4.0
%の砥石を用いてアルミ合金製円筒管を電解複合研磨に
より加工する工程を含むこと、アルミ合金製円筒管に前
段の加工工程により粗又は中間研磨をした後、後段の加
工工程により表面粗さが0.1〜2.0μmRy、真円
度が25μm以下に仕上げ研磨すること、を要旨とする
ものである。Means for Solving the Problems As a specific means for achieving this object, the present invention has a particle size of from $ 80 to $ 22.
0 (particle diameter: 180 to 53 μm) is fixed with a resin binder, and a cylindrical tube made of aluminum alloy is formed using a grindstone having a compression elastic modulus of 200 to 1200 MPa and a tensile breaking elongation of 1.0 to 6.0%. Including a step of processing by electrolytic combined polishing, the particle size is from $ 320 to $ 6000 (particle size 40 to 2.0
μm) abrasive grains are fixed with a resin binder and the compression modulus is 5
0-300 MPa, tensile elongation at break is 1.0-4.0.
% Grinding process of aluminum alloy cylindrical tube by electrolytic composite polishing using a grinding wheel. After roughening or intermediate polishing of the aluminum alloy cylindrical tube by the preceding processing step, surface roughness by the subsequent processing step Is 0.1-2.0 μmRy and the final roundness is 25 μm or less.
【0007】即ち、本発明は、従来のダイヤモンド切削
等機械加工が抱えていた問題を解決し、上記のように所
定の粒度、圧縮弾性率、引っ張り破壊伸びを備えた砥石
を用いて電解複合研磨加工することにより、アルミ合金
製感光ドラムとして必要な真円度等寸法精度の向上した
形状加工を行うと共に、表面欠陥のない高精度の鏡面加
工を行うことができる。That is, the present invention solves the problems encountered in conventional machining such as diamond cutting, and performs electrolytic composite polishing using a grindstone having a predetermined grain size, compression modulus and tensile breaking elongation as described above. By processing, it is possible to perform shape processing with improved dimensional accuracy such as roundness required for an aluminum alloy photosensitive drum and high-precision mirror processing without surface defects.
【0008】前記電解複合研磨加工に使用する砥石は、
被研磨材であるアルミ合金製円筒管の径、表面に付いて
いる傷や凹凸等の表面状態により粗又は中間研磨加工、
仕上げ研磨加工を一連の電解複合研磨装置で行うこと
も、粗又は中間研磨加工と仕上げ研磨加工とを別個の電
解複合研磨装置で行うことも可能である。又、砥石の粒
度は、アルミ合金製感光ドラムとして要求される表面粗
さに応じて前記の数値範囲内で適宜選択することができ
る。[0008] The grindstone used in the electrolytic combined polishing is as follows:
Depending on the diameter of the aluminum alloy cylindrical tube to be polished, the surface condition such as scratches and irregularities on the surface, rough or intermediate polishing processing,
The final polishing can be performed by a series of electrolytic composite polishing apparatuses, or the rough or intermediate polishing processing and the final polishing processing can be performed by separate electrolytic composite polishing apparatuses. The grain size of the grindstone can be appropriately selected within the above-mentioned numerical range according to the surface roughness required for the photosensitive drum made of an aluminum alloy.
【0009】[0009]
【発明の実施の形態】次に、本発明に係るアルミ合金製
感光ドラムの製造方法についての実施形態を添付図面に
基づいて説明する。図1及び図2は揺動方式の電解複合
研磨装置の一例を示すもので、これは縦型形式であるが
横型形式のものであってもかまわない。図中、1は被研
磨材であるアルミ合金製円筒管であり、その上下端部は
支持部材5によってそれぞれ支持され、陽極に帯電され
て軸線周りに高速回転する。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, an embodiment of a method for manufacturing an aluminum alloy photosensitive drum according to the present invention will be described with reference to the accompanying drawings. FIGS. 1 and 2 show an example of a swing type electrolytic composite polishing apparatus, which is a vertical type but may be a horizontal type. In the drawing, reference numeral 1 denotes a cylindrical tube made of an aluminum alloy which is a material to be polished, and upper and lower ends thereof are respectively supported by a support member 5, charged by an anode, and rotated at high speed around an axis.
【0010】この円筒管1に対して、図2のように外面
の円周方向に沿って三方向から中心に向けて砥石2が放
射状に配置され、これらの砥石2は砥石ホルダー7にそ
れぞれ着脱可能に取り付けられ、ハウジング6の側部に
設けられたアクチュエータ8により円筒管1の外周面に
一定の圧力で押し付けられている。この場合、砥石ホル
ダー7は、前記ハウジング6に固定された保持枠9に進
退可能に保持されている。As shown in FIG. 2, the grindstones 2 are radially arranged on the cylindrical tube 1 from three directions along the circumferential direction of the outer surface toward the center, and these grindstones 2 are attached to and detached from the grindstone holders 7, respectively. It is attached so as to be capable of being pressed against the outer peripheral surface of the cylindrical tube 1 with a constant pressure by an actuator 8 provided on a side portion of the housing 6. In this case, the grindstone holder 7 is held by a holding frame 9 fixed to the housing 6 so as to be able to advance and retreat.
【0011】前記保持枠9内には、砥石2の進退可能な
開口部を有する円筒枠10が円筒管1と同心状に所要の
隙間をあけて配設され、この円筒枠10と円筒管1との
間に電解液通路Aが形成され、図1のように電解液通路
Aの上端はハウジング6の電解液供給口6aに連通し、
下端は電解液排出口6bに連通している。更に、図2の
ように円筒枠10の開口部の上端部(円筒管1と砥石2
との接触部分に隣接)には陰極電極3がそれぞれ取り付
けられている。In the holding frame 9, a cylindrical frame 10 having an opening through which the grindstone 2 can advance and retreat is disposed concentrically with the cylindrical tube 1 with a required gap. And an upper end of the electrolyte passage A communicates with an electrolyte supply port 6a of the housing 6 as shown in FIG.
The lower end communicates with the electrolyte outlet 6b. Further, as shown in FIG. 2, the upper end of the opening of the cylindrical frame 10 (the cylindrical tube 1 and the grindstone 2).
(Adjacent to the contact portion) are attached with cathode electrodes 3 respectively.
【0012】11は前記砥石ホルダー7を挟むようにし
てその両側に配設されたガラス板であり、研磨時に発生
する摩擦力を少なくするためであって滑性に優れている
ならば他の材質のものでも良い。Numeral 11 is a glass plate disposed on both sides of the grinding wheel holder 7 so as to sandwich the grinding wheel holder 7, and is made of another material if it is excellent in lubricity and is excellent in lubrication. But it is good.
【0013】このように構成された電解複合研磨装置に
おいて、前記ハウジング6は適宜の揺動機構(図略)に
より揺動可能に形成され、高速で軸回転する円筒管1に
対してその軸線方向(上下方向)に揺動させ、前記電解
液供給口6aから電解液4を供給して電解液通路A内を
通過させ、且つ前記砥石2で研磨することにより円筒管
1の外周面を電解複合研磨する。In the electrolytic composite polishing apparatus thus constructed, the housing 6 is formed so as to be able to swing by an appropriate swinging mechanism (not shown), and the axial direction of the cylindrical tube 1 with respect to the cylindrical tube 1 which rotates at a high speed. (Up and down direction), the electrolytic solution 4 is supplied from the electrolytic solution supply port 6a, passes through the electrolytic solution passage A, and is polished by the whetstone 2. Grind.
【0014】前記砥石2は粗又は中間研磨用と仕上げ研
磨用とが用意され、これらの砥石を用いて円筒管1は粗
研磨−中間研磨−仕上げ研磨の3工程を経て、或いは粗
研磨−仕上げ研磨の2工程を経て鏡面加工される。アル
ミ合金製感光ドラムの製造条件に合わせて選択される。The grindstone 2 is prepared for rough or intermediate polishing and for finish polishing. The cylindrical tube 1 is subjected to three steps of rough polishing-intermediate polishing-finish polishing or rough polishing-finish using these grindstones. It is mirror-finished through two polishing steps. The selection is made according to the manufacturing conditions of the photosensitive drum made of an aluminum alloy.
【0015】粗又は中間研磨用砥石は、JIS−R60
01により規定された粒度♯46〜♯320(粒子径3
55〜40μm)好ましくは♯80〜♯220(粒子径
180〜53μm)の砥粒を樹脂結合剤で固着させ、圧
縮弾性率Eが100〜2000MPa好ましくは200
〜1200MPa、引っ張り破壊伸びが0.7〜8.0
%好ましくは1.0〜6.0%に形成された砥石を用い
る。The grinding stone for rough or intermediate polishing is JIS-R60
Particle size # 46 to # 320 (particle size 3
55 to 40 μm), preferably # 80 to # 220 (particle diameter 180 to 53 μm) abrasive grains are fixed with a resin binder, and the compression modulus E is 100 to 2000 MPa, preferably 200
11200 MPa, tensile elongation at break is 0.788.0.
%, Preferably 1.0 to 6.0%.
【0016】砥粒としては、JIS−R6111で規定
される人造研磨材を用いることができ、即ちアルミナ研
削材、炭化珪素研削材である。アルミニウム自体は非鉄
金属であるため、通常の機械研削加工においては炭化珪
素研削材が良く用いられるが、電解複合研磨においては
炭化珪素研削材が特に好ましいわけではない。As the abrasive grains, artificial abrasives specified in JIS-R6111 can be used, that is, alumina abrasives and silicon carbide abrasives. Since aluminum itself is a non-ferrous metal, silicon carbide abrasives are often used in ordinary mechanical grinding, but silicon carbide abrasives are not particularly preferred in electrolytic combined polishing.
【0017】砥粒の粒度範囲を♯46〜♯320(粒子
径355〜40μm)としたのは、アルミ合金製感光ド
ラムの電解複合研磨加工における生産性、及び仕上げ研
磨に影響を及ぼさないスクラッチ等表面傷の残存を極力
抑え、且つ加工後得られる表面粗さを5〜15μmRy
にするためである。The reason why the grain size range of the abrasive grains is set to # 46 to # 320 (particle diameter: 355 to 40 μm) is that the productivity in electrolytic composite polishing of an aluminum alloy photosensitive drum and scratches which do not affect the finish polishing are considered. Minimize residual surface flaws and reduce surface roughness after processing to 5 to 15 μmRy
In order to
【0018】粒度が♯46より小さい場合は、粒子径が
大きくなるため所定の表面粗さが得られず、仕上げ研磨
に影響を及ぼす恐れのあるスクラッチ等表面傷が残存し
てしまう。一方、粒度が♯320より大きい場合は、粒
子径が小さくなるため電解複合研磨における単位時間当
たりの研削量が低下し、所定の研削量を得るには多くの
時間を要することとなり、生産性の低下を引き起こして
しまう。好ましくは♯80〜♯220の粒度が良い。If the particle size is smaller than # 46, the particle size becomes large and a predetermined surface roughness cannot be obtained, leaving surface scratches and the like which may affect the finish polishing. On the other hand, when the particle size is larger than $ 320, the particle size becomes smaller, so the amount of grinding per unit time in electrolytic combined polishing decreases, and it takes much time to obtain a predetermined amount of grinding. Cause a drop. Preferably, the particle size is between $ 80 and $ 220.
【0019】前記樹脂結合剤としては、例えばフェノー
ル樹脂、エポキシ樹脂、ウレタン樹脂等の一般のレジノ
イド系砥石で使用される樹脂を使用することができる。
又、砥石の製法としては、これらの樹脂結合剤の単独又
は複数を用いて砥粒及び気孔形成材と混合し、プレス及
び樹脂結合剤の熱硬化により固める方法が採用できる。As the resin binder, for example, resins used in general resinoid grindstones such as phenol resin, epoxy resin and urethane resin can be used.
In addition, as a method for producing a grindstone, a method in which one or more of these resin binders are used, mixed with abrasive grains and a pore-forming material, and then solidified by pressing and thermosetting of the resin binder can be adopted.
【0020】しかしながら、上記のいわゆるレジノイド
系砥石の製法では、所定の圧縮弾性率及び引っ張り破壊
伸びを制御することが難しく、圧縮弾性率Eが2000
MPa以上の砥石の製造に向いているといえる。従っ
て、所定の圧縮弾性率及び引っ張り破壊伸びを容易に得
るためには、圧縮弾性率の小さい弾性砥石であるポリビ
ニルアルコールボンド砥石(以下、PVA砥石)の改良
品、或いは砥粒を含有したポリビニルアルコール繊維を
素材として、適当な長さに加工したポリビニルアルコー
ル繊維を上述の樹脂結合剤で固着させた砥石等の特殊弾
性砥石が好適である。However, in the above-mentioned method of manufacturing a so-called resinoid grindstone, it is difficult to control a predetermined compressive modulus and tensile elongation at break.
It can be said that it is suitable for manufacturing a grinding wheel of MPa or more. Therefore, in order to easily obtain a predetermined compression modulus and tensile elongation at break, an improved product of a polyvinyl alcohol bond grindstone (hereinafter referred to as PVA grindstone), which is an elastic grindstone having a small compression modulus, or polyvinyl alcohol containing abrasive grains A special elastic grindstone such as a grindstone in which a polyvinyl alcohol fiber processed to an appropriate length using a fiber as a material and fixed with the above-mentioned resin binder is suitable.
【0021】前記PVA砥石の場合、フェノール樹脂、
メラミン樹脂等の熱硬化性樹脂をPVA砥石に含浸、固
化し、必要な耐水性及び水中での強度を確保することが
可能である。又、PVA砥石を製造する際、予めポリビ
ニルアルコールとフェノール樹脂とを混合して結合剤と
し、この結合剤を用いて製造した樹脂変性PVA砥石も
同様の作用を有する砥石となる。砥粒含有ポリビニルア
ルコール繊維を素材として用いる砥石の場合、砥粒はポ
リビニルアルコール繊維中に強固に保持されている。そ
して、ポリビニルアルコール繊維という一種のクッショ
ン材を用いることにより、フェノール樹脂、エポキシ樹
脂等樹脂結合剤自体としては、圧縮弾性率が大きい樹脂
を用いても、圧縮弾性率を5000MPa以下のレベル
で自由に制御することが可能となる。砥粒含有繊維とし
ては、ポリビニルアルコールの他に砥粒含有ナイロン系
繊維等の合成繊維も使用できる。更に、砥粒を繊維の外
側に付着させた砥粒付着合成繊維も使用可能である。In the case of the PVA grinding stone, a phenol resin,
It is possible to impregnate and solidify a PVA grindstone with a thermosetting resin such as a melamine resin to secure necessary water resistance and strength in water. When a PVA grindstone is manufactured, polyvinyl alcohol and a phenol resin are mixed in advance to form a binder, and a resin-modified PVA grindstone manufactured using the binder also has a similar effect. In the case of a grindstone using abrasive grains-containing polyvinyl alcohol fibers as a material, the abrasive grains are firmly held in the polyvinyl alcohol fibers. And, by using a kind of cushion material such as polyvinyl alcohol fiber, even if a resin having a large compression modulus is used as the resin binder itself such as phenol resin and epoxy resin, the compression modulus can be freely set at a level of 5000 MPa or less. It becomes possible to control. As the abrasive-containing fibers, synthetic fibers such as abrasive-containing nylon fibers can be used in addition to polyvinyl alcohol. Further, synthetic fibers having abrasive grains attached to the outside of the fibers can also be used.
【0022】圧縮弾性率の範囲を100〜2000MP
aとしたのは、圧縮弾性率が100MPa未満の砥石で
は、砥粒が有する研削作用を充分発揮できないからであ
り、圧縮弾性率が2000MPaを超える砥石では、目
詰まりのため連続加工が不可能となり、又加工時に発生
するスクラッチ傷の発生頻度も高くなるからである。The range of the compression modulus is 100 to 2000MP
The reason for setting a is that a grinding stone having a compression elastic modulus of less than 100 MPa cannot sufficiently exhibit the grinding action of the abrasive grains, and a grinding stone having a compression elastic modulus of more than 2000 MPa makes continuous processing impossible due to clogging. In addition, the frequency of occurrence of scratches generated during processing also increases.
【0023】引っ張り破壊伸びの範囲を0.7〜8.0
%としたのは、引っ張り破壊伸びが0.7%未満では、
砥石の磨耗が大きくなり、加工コストが増大するからで
あり、引っ張り破壊伸びが8.0%を超える場合では、
砥石の研削性が低下し、目詰まりが発生し易いからであ
る。The tensile elongation at break ranges from 0.7 to 8.0.
The reason is that when the tensile elongation at break is less than 0.7%,
This is because the abrasion of the grindstone increases and the processing cost increases. When the tensile elongation at break exceeds 8.0%,
This is because the grindability of the grindstone decreases and clogging is likely to occur.
【0024】一方、仕上げ研磨用砥石に付いて説明する
と、これはJIS−R6001により規定された粒度♯
220〜♯8000(粒子径53〜1.2μm)好まし
くは♯320〜♯6000(粒子径40〜2.0μm)
の砥粒を樹脂結合剤で固着させ、圧縮弾性率が10〜5
00MPa好ましくは50〜300MPa、引っ張り破
壊伸びが0.5〜5.0%好ましくは1.0〜4.0%
の砥石を用いる。On the other hand, the finish polishing grindstone will be described. This is based on the particle size defined by JIS-R6001.
220 to $ 8000 (particle size 53 to 1.2 m), preferably $ 320 to $ 6000 (particle size 40 to 2.0 m)
Is fixed with a resin binder, and the compression modulus is 10 to 5
00 MPa, preferably 50 to 300 MPa, and tensile elongation at break of 0.5 to 5.0%, preferably 1.0 to 4.0%
Use a whetstone.
【0025】この場合も砥粒としては、JIS−R61
11で規定される人造研削材、即ちアルミナ研削材、炭
化珪素研削材を用いることができる。その他の研削材と
しては、例えば酸化セリウム、酸化クロム等も使用可能
である。電解複合研磨における仕上げ研磨加工として
は、特に炭化珪素研削材が好ましい。この炭化珪素研削
材は、電解複合研磨の仕上げ研磨加工で砥粒としての研
削性と仕上げ面粗さとのバランスにおいて酸化アルミニ
ウム等のアルミナ研削材より優れている。In this case, the abrasive grains are also JIS-R61.
Artificial abrasives specified in 11, that is, alumina abrasives and silicon carbide abrasives can be used. As other abrasives, for example, cerium oxide, chromium oxide and the like can be used. As the finish polishing in the electrolytic combined polishing, a silicon carbide abrasive is particularly preferable. This silicon carbide abrasive is superior to an alumina abrasive such as aluminum oxide in the balance between the grindability as abrasive grains and the finished surface roughness in the finish polishing of electrolytic combined polishing.
【0026】砥粒の粒度範囲を♯220〜♯8000と
したのは、アルミ合金製感光ドラムの電解複合研摩加工
における生産性、及び加工後得られる表面粗さを0.1
〜2.0μmRyにするためである。The reason why the grain size range of the abrasive grains is set to be from 220 to 8000 is that the productivity and the surface roughness of the aluminum alloy photosensitive drum in the electrolytic combined polishing are 0.1%.
This is for setting the thickness to 2.0 μmRy.
【0027】粒度が♯220より小さい場合は、粒子径
が大きくなるため安定して2.0μmRy以下の表面粗
さが得られない。一方、粒度が♯8000より大きい場
合は、粒子径が小さくなるため電解複合研磨における単
位時間当たりの研削量が低下し、前工程での加工面の粗
さを除去する研削量を得るために多くの時間を要するこ
ととなり、生産性の低下となるからである。好ましくは
♯320〜♯6000の粒度が良い。When the particle size is smaller than # 220, the particle size becomes large, so that a surface roughness of 2.0 μmRy or less cannot be obtained stably. On the other hand, when the particle size is larger than $ 8000, the particle size is reduced, so that the grinding amount per unit time in electrolytic combined polishing is reduced, and it is often necessary to obtain the grinding amount for removing the roughness of the processed surface in the previous process. This time is required, and the productivity is reduced. Preferably, the particle size is from $ 320 to $ 6000.
【0028】砥石の所定の圧縮弾性率及び引っ張り破壊
伸びを容易に得るためには、圧縮弾性率の小さい弾性砥
石であるPVA砥石又はその改良品が好適である。PV
A砥石の場合、フェノール樹脂、メラミン樹脂等の熱硬
化性樹脂を単独または複数を用いてPVA砥石に含浸、
固化し、必要な圧縮弾性率、引っ張り破壊伸びを確保す
ることが可能である。又、PVA砥石を製造する際、予
めポリビニールアルコールとフェノール樹脂とを混合し
て製造した樹脂変成PVA砥石も同様の作用を有する砥
石となる。In order to easily obtain a predetermined compression elastic modulus and a tensile elongation at break of the grinding wheel, a PVA grinding stone, which is an elastic grinding stone having a small compression elastic modulus, or an improved product thereof is preferable. PV
In the case of A grinding wheel, phenol resin, impregnating the PVA grinding wheel using a thermosetting resin such as melamine resin alone or in combination,
It is possible to solidify and secure necessary compression modulus and tensile elongation at break. When a PVA grindstone is manufactured, a resin-modified PVA grindstone manufactured by previously mixing polyvinyl alcohol and a phenol resin is also a grindstone having the same function.
【0029】粒度が♯220より大きい(粒子径は♯2
20の場合より小さい)PVA砥石においては、砥粒の
種類、粒度、結合剤の他に砥石中の気孔率、即ち砥石体
積中の空気の割合も重要な要因である。微細な砥粒を用
いて目詰まりの少ない連続研磨加工をするには、気孔率
は70%以上が望ましい。The particle size is larger than # 220 (particle size is # 2
In PVA wheels (smaller than 20), the porosity in the wheel, ie the proportion of air in the wheel volume, is also an important factor in addition to the type, grain size and binder of the abrasive grains. In order to perform continuous polishing with less clogging using fine abrasive grains, the porosity is desirably 70% or more.
【0030】圧縮弾性率の範囲を10〜500MPaと
したのは、圧縮弾性率が10MPa未満の砥石では、ア
ルミ合金製感光ドラムの真円度不良を起こして研磨面に
むらが発生するからであり、圧縮弾性率が500MPa
を超える砥石では、スクラッチ傷の発生頻度が高くなり
良好な表面品質が得られないからである。The reason for setting the range of the compression elastic modulus to 10 to 500 MPa is that, if the grinding stone has a compression elastic modulus of less than 10 MPa, the roundness of the photosensitive drum made of aluminum alloy is deteriorated and the polishing surface becomes uneven. , Compression modulus is 500MPa
This is because with a grindstone exceeding the above, the frequency of occurrence of scratches increases, and good surface quality cannot be obtained.
【0031】引っ張り破壊伸びの範囲を0.5〜5.0
%としたのは、引っ張り破壊伸びが0.5%未満では、
砥石の磨耗が大きく、加工コストが増大するからであ
り、引っ張り破壊伸びが5.0%を超えると、砥石の研
削性が低下して目詰まりが発生し易くなり、真円度等の
寸法精度が低下するからである。The range of the tensile breaking elongation is 0.5 to 5.0.
The reason is that when the tensile elongation at break is less than 0.5%,
This is because the abrasion of the grindstone is large and the processing cost increases. If the tensile elongation at break exceeds 5.0%, the grindability of the grindstone decreases and clogging easily occurs, and dimensional accuracy such as roundness and the like is increased. Is reduced.
【0032】[実施例]本発明に係るアルミ合金製感光
ドラムの製造方法について、前記電解複合研磨装置によ
る研磨加工実験を行った。この時の被研磨材、研磨条
件、測定装置等は次の通りである。 被研磨材: 6000系アルミ合金製円筒管(直径30
mm) 研磨装置: 揺動式電解複合研磨機 印加電圧: 粗研磨、仕上げ研磨ともそれぞれ一定 砥石押圧力:粗研磨、仕上げ研磨ともそれぞれ一定 電解液: 粗研磨、仕上げ研磨とも硝酸ナトリウム水
溶液 表面粗さ計:SURFCOM(130A型)東京精密製 砥石物性測定機(圧縮試験、引っ張り試験):テンシロ
ン(UCT−5T型)株式会社A&D製 砥石物性試料片調整条件:試料を48時間25℃の水に
浸漬後測定[Embodiment] With respect to the method of manufacturing the aluminum alloy photosensitive drum according to the present invention, a polishing experiment was carried out using the electrolytic combined polishing apparatus. At this time, the material to be polished, the polishing conditions, the measuring device and the like are as follows. Material to be polished: 6000 series aluminum alloy cylindrical tube (diameter 30)
mm) Polishing device: Oscillating electrolytic composite polishing machine Applied voltage: Both rough polishing and finish polishing are constant. Grinding stone pressing force: Both rough polishing and finish polishing are constant. Electrolyte solution: Sodium nitrate aqueous solution for both rough polishing and finish polishing. Total: SURFCOM (130A) Tokyo Seimitsu whetstone physical property measuring machine (compression test, tensile test): Tensilon (UCT-5T) A & D Co., Ltd. A & D Co., Ltd. Whetstone physical properties Sample adjustment condition: immerse sample in water at 25 ° C for 48 hours After measurement
【0033】使用した砥石の種類は次の通りである。 (1)耐水PVA砥石A ポリビニルアルコール水溶液中に砥粒・デンプン等の気
孔生成材、ホルムアルデヒド及び塩酸等の触媒を加えて
混合・攪拌した後所定の型に入れ、一定時間反応(例え
ば45℃、48時間)させ、ポリビニルアルコールのア
セタール反応によりポリビニルアルコールを固化させ
る。この過程でできた砥石は通常PVA砥石と呼び、結
合剤はポリビニルアルコールのアセタール化物となって
いる。耐水PVA砥石Aは、このPVA砥石にメラミン
樹脂、フェノール樹脂等の熱硬化性樹脂を含浸、硬化さ
せ、水中においてもPVA砥石が極度に軟化しないよう
品質改良したもの。 (2)耐水PVA砥石B PVA砥石製造過程において、結合剤にポリビニルアル
コール及びフェノール樹脂等の耐水樹脂を併用した砥
石。併用する耐水樹脂の濃度が高い場合は、後工程でメ
ラミン樹脂等の含浸工程を不要とすることが可能であ
る。 (3)砥粒入り繊維固化砥石 砥粒を含有したポリビニルアルコール繊維を、5〜15
mm程度の適当な長さに切断し、エポキシ樹脂、ポリウ
レタン樹脂等を混合、攪拌後、型に入れ、プレス及び熱
硬化処理を施した砥石。従って、砥石の結合剤は、ポリ
ビニルアルコールと熱硬化性樹脂の混合物である。切断
繊維と樹脂を混合する際、必要により砥粒を追加混合し
ても良い。又、使用する樹脂の種類においては、切断繊
維を型に入れた後、水又は溶剤で希釈した樹脂を型に注
入し、固化反応させても良い。The types of grindstones used are as follows. (1) Water-resistant PVA grindstone A A pore-forming material such as abrasive grains and starch, a catalyst such as formaldehyde and hydrochloric acid are added to an aqueous solution of polyvinyl alcohol, mixed and stirred, then put into a predetermined mold, and then reacted for a predetermined time (for example, 45 ° C., 48 hours), and the polyvinyl alcohol is solidified by the acetal reaction of the polyvinyl alcohol. The grindstone formed in this process is usually called a PVA grindstone, and the binder is acetalized polyvinyl alcohol. The water-resistant PVA grindstone A is obtained by impregnating a thermosetting resin such as a melamine resin or a phenol resin into the PVA grindstone and curing the PVA grindstone so that the PVA grindstone does not extremely soften even in water. (2) Water-resistant PVA grinding stone B A grinding stone in which a water-resistant resin such as polyvinyl alcohol and phenol resin is used in combination in a PVA grinding stone manufacturing process. When the concentration of the water-resistant resin used in combination is high, the step of impregnating the melamine resin or the like in the subsequent step can be omitted. (3) A fiber-solidifying grindstone containing abrasive grains A polyvinyl alcohol fiber containing abrasive grains is used for 5 to 15
A grindstone cut to an appropriate length of about mm, mixed with an epoxy resin, polyurethane resin, etc., stirred, placed in a mold, and subjected to press and heat curing treatment. Thus, the binder of the grindstone is a mixture of polyvinyl alcohol and a thermosetting resin. When mixing the cut fibers and the resin, abrasive grains may be additionally mixed as necessary. In addition, depending on the type of resin to be used, after the cut fibers are put in a mold, a resin diluted with water or a solvent may be poured into the mold to cause a solidification reaction.
【0034】電解複合研磨の試験結果を表1〜表2に示
す。表1は粗研磨の場合であり、表2は仕上げ研磨の場
合である。Tables 1 and 2 show the test results of the electrolytic combined polishing. Table 1 shows the case of rough polishing, and Table 2 shows the case of finish polishing.
【0035】[0035]
【表1】 [Table 1]
【0036】[0036]
【表2】 [Table 2]
【0037】この試験結果から、表1の粗研磨の場合を
検討すると、実施例1、4,6,8等が好成績であっ
た。これらに共通している点は、砥石の粒度が♯80〜
♯220の範囲内にあること、弾性圧縮率が200〜1
200MPaの範囲内にあること、引っ張り破壊伸びが
1.0〜6.0%の範囲内にあることである。From the test results, when the case of rough polishing shown in Table 1 was examined, Examples 1, 4, 6, 8 and the like showed good results. What is common to these is that the grain size of the grindstone is
♯ 220, elastic compressibility is 200-1
It is within the range of 200 MPa, and the tensile elongation at break is within the range of 1.0 to 6.0%.
【0038】従って、砥石の粒度に関しては♯80〜♯
220の範囲が良好であり、他の要因が複雑に絡んでく
るから一概には言えないが、この粒度範囲を外れると不
都合が生じているのが分かる。例えば実施例3の♯46
の場合であると、砥石表面にやや目詰まりが見られ、研
削力不足を呈しており、実施例2の♯36の場合である
と、粒子径が大きくなるため面粗度がやや粗くなり、実
施例9の♯600の場合であると、粒子径が小さくなる
ため加工能率が劣る状態を呈している。Therefore, regarding the grain size of the grinding wheel, {80-}
Although the range of 220 is good and other factors are complicatedly involved, it cannot be said unconditionally. However, if it is out of this particle size range, it can be seen that a problem occurs. For example, $ 46 in the third embodiment
In the case of, the surface of the grindstone is slightly clogged, and the grinding power is insufficient. In the case of # 36 in Example 2, the surface roughness becomes slightly coarse because the particle diameter increases, In the case of # 600 of Example 9, the processing efficiency is poor because the particle diameter is small.
【0039】圧縮弾性率に関しては、200〜1200
MPaの範囲が良好であり、実施例3の80MPaの場
合であると、砥粒が有する研削作用を充分発揮できない
ため加工能率が劣り、実施例5の2300MPaの場合
であると、砥石目詰まりのため連続加工が不可能となる
ことが判明した。実施例2の1200MPaの場合は、
面粗度はやや粗い状態であったが、目詰まりは生じず研
削作用は良好であった。With respect to the compression modulus, 200 to 1200
When the range of MPa is good, and in the case of 80 MPa in Example 3, the grinding efficiency of the abrasive grains cannot be sufficiently exhibited, so that the processing efficiency is inferior. In the case of 2300 MPa in Example 5, the grinding wheel clogging may occur. Therefore, it was found that continuous processing was impossible. In the case of 1200 MPa in the second embodiment,
Although the surface roughness was slightly rough, no clogging occurred and the grinding action was good.
【0040】引っ張り破壊伸びに関しては、1.0〜
6.0%の範囲が良好であり、1.0%未満の場合であ
ると、砥石の磨耗が大きくなり、加工コストが増大する
ことが予想され、6.0%を超えると例えば実施例7の
9.8%の場合であると、砥石の研削性が低下して目詰
まりが発生し易くなる。実施例5の1.8%の場合に目
詰まりが発生したのは、高い圧縮弾性率(2300MP
a)の影響を受けたものと考えられる。The tensile elongation at break is 1.0 to
If the range of 6.0% is good, and if it is less than 1.0%, it is expected that the wear of the grindstone will increase and the processing cost will increase. If it exceeds 6.0%, for example, Example 7 In the case of 9.8%, the grindability of the grindstone is reduced and clogging is likely to occur. Clogging occurred at 1.8% in Example 5 because of a high compression modulus (2300MP).
It is considered that this was affected by a).
【0041】次に、表2の仕上げ研磨の場合を検討する
と、実施例5,7,12等が好成績であり、実施例9は
やや研磨むらはあったが概ね良好であった。いずれも、
加工後の表面粗さは目的とする0.1〜2.0μmRy
の範囲内に収まり、真円度は25μm以下に仕上がっ
た。これらに共通している点は、砥石の粒度が♯320
〜♯6000の範囲内にあること、圧縮弾性率が50〜
300MPaの範囲内にあること、引っ張り破壊伸びが
1.0〜4.0%の範囲内にあることである。Next, when examining the case of finish polishing shown in Table 2, Examples 5, 7, and 12 showed good results, and Example 9 showed generally good polishing, although there was some unevenness in polishing. In each case,
Surface roughness after processing is 0.1 to 2.0 μmRy
And the roundness was finished to 25 μm or less. The common feature of these is that the grain size of the grinding stone is $ 320.
~ 6000, compression modulus is 50 ~
It is within the range of 300 MPa, and the tensile elongation at break is within the range of 1.0 to 4.0%.
【0042】従って、砥石の粒度に関しては、♯320
〜♯6000の範囲が好ましい。実施例1と実施例3の
♯220の場合であると、軌跡や研磨むらが多少有り、
実施例2と実施例4の♯120の場合であると、軌跡や
研磨むらが目立ち、面粗さも不良であった。前記のよう
に加工後の表面粗さは0.1〜2.0μmRyの範囲内
が好ましいが、粒度が小さい場合は、粒子径が大きくな
るため安定して2.0μmRy以下の表面粗さが得られ
ない。粒度が実施例6の♯12000のように大きい場
合は、粒子径が小さくなるため電解複合研磨における単
位時間当たりの研削量が低下し、且つ前加工面の粗さを
除去する研削量を得るには多くの時間を要することとな
り、生産性の低下を引き起こすことになる。Therefore, regarding the grain size of the grinding wheel, $ 320
A range of ~ $ 6000 is preferred. In the case of # 220 of Example 1 and Example 3, there are some traces and uneven polishing,
In the case of # 120 of Example 2 and Example 4, the locus and polishing unevenness were conspicuous, and the surface roughness was poor. As described above, the surface roughness after processing is preferably in the range of 0.1 to 2.0 μmRy. However, when the particle size is small, the particle size increases, so that a surface roughness of 2.0 μmRy or less is obtained. I can't. When the particle size is large, such as $ 12000 in Example 6, the particle size is small, so the grinding amount per unit time in electrolytic combined polishing is reduced, and the grinding amount for removing the roughness of the pre-processed surface is required. Takes a lot of time, and causes a decrease in productivity.
【0043】圧縮弾性率に関しては、50〜300MP
aが好ましく、実施例10のように圧縮弾性率が40M
Paの場合であると、真円度不良を起こし、研磨面にむ
らが発生し、実施例1,2のように圧縮弾性率が300
MPaを超えると、軌跡やむら等の表面不良の発生頻度
が高くなり、良好な表面品質が得られない。又、実施例
6の50MPaの場合に、研削力不足が発生し、前加工
面除去が不可となったのは粒度♯12000で、粒子径
が小さい(1μm)ことに起因すると考えられる。Regarding the compression modulus, 50 to 300MP
a is preferable, and the compression modulus is 40 M as in Example 10.
In the case of Pa, roundness failure occurs, unevenness occurs on the polished surface, and the compression elastic modulus is 300 as in Examples 1 and 2.
If it exceeds MPa, the frequency of occurrence of surface defects such as locus and unevenness increases, and good surface quality cannot be obtained. In addition, in the case of 50 MPa in Example 6, the reason why the grinding force was insufficient and the pre-processed surface could not be removed was considered to be due to the particle size of 12000 and the small particle size (1 μm).
【0044】引っ張り破壊伸びに関しては、1.0〜
4.0%の範囲が好ましく、実施例8の0.2%の場合
であると、砥石の磨耗量が大きくなり、加工コストが増
大し、実施例10の7.5%の場合であると、砥石の研
削力が低下し、目詰まりが発生し易くなり、真円度等寸
法精度も低下することが判明した。尚、以上の実施例に
おいて、砥石の種類に関しては格別な差異は認められな
かった。The tensile elongation at break is 1.0 to
The range of 4.0% is preferable. In the case of 0.2% in Example 8, the amount of wear of the grindstone increases, the processing cost increases, and in the case of 7.5% of Example 10, It was also found that the grinding power of the grindstone was reduced, clogging was likely to occur, and dimensional accuracy such as roundness was also reduced. Note that, in the above examples, no particular difference was recognized regarding the type of the grindstone.
【0045】[0045]
【発明の効果】以上説明したように、本発明方法によれ
ば、粒度、圧縮弾性率、引っ張り破壊伸びをそれぞれ特
定範囲に定めた砥石を用いてアルミ合金製円筒管の外周
面を電解複合研磨加工することにより、表面にむしれ、
かぶさり等の表面欠陥を生じることなく、感光ドラムと
して要求される表面粗さ及び真円度を満足する高精度の
加工品が得られ、しかも製品歩留まりを向上させること
ができる等の優れた効果を奏する。As described above, according to the method of the present invention, the outer peripheral surface of an aluminum alloy cylindrical tube is electrolytically polished using a grindstone in which the grain size, compression modulus and tensile elongation at break are respectively specified. By processing, the surface is peeled,
It is possible to obtain a highly accurate processed product that satisfies the surface roughness and roundness required for the photosensitive drum without causing surface defects such as overcasting, and has the excellent effects of improving the product yield. Play.
【図1】本発明に係るアルミ合金製感光ドラムの製造方
法を実施する電解複合研磨装置の一例を示す概略縦断面
図FIG. 1 is a schematic longitudinal sectional view showing an example of an electrolytic combined polishing apparatus for implementing a method for manufacturing an aluminum alloy photosensitive drum according to the present invention.
【図2】図1のX−X線断面図FIG. 2 is a sectional view taken along line XX of FIG.
1…アルミ合金製円筒管 2…砥石 3…陰極電極 4…電解液 5…支持部材 6…ハウジング 7…砥石ホルダー 8…アクチュエータ 9…保持枠 10…円筒枠 11…ガラス板 DESCRIPTION OF SYMBOLS 1 ... Aluminum alloy cylindrical tube 2 ... Grinding stone 3 ... Cathode electrode 4 ... Electrolyte 5 ... Support member 6 ... Housing 7 ... Grinding stone holder 8 ... Actuator 9 ... Holding frame 10 ... Cylindrical frame 11 ... Glass plate
───────────────────────────────────────────────────── フロントページの続き (72)発明者 冨田 雅史 山口県下関市長府港町14番1号 日新運輸 工業株式会社内 Fターム(参考) 2H068 AA52 AA54 AA58 AA59 CA32 EA07 FA25 3C059 AA02 AB01 GB01 GC01 HA17 3C063 AA02 AB07 BA05 BA08 BB01 BB03 BB04 BB07 BB25 BC03 BD09 BH01 BH09 CC19 DD02 EE01 EE40 FF23 ────────────────────────────────────────────────── ─── Continuing on the front page (72) Inventor Masafumi Tomita 14-1 Nagafuminatocho, Shimonoseki City, Yamaguchi Prefecture F-term (reference) 2N068 AA52 AA54 AA58 AA59 CA32 EA07 FA25 3C059 AA02 AB01 GB01 GC01 HA17 3C063 AA02 AB07 BA05 BA08 BB01 BB03 BB04 BB07 BB25 BC03 BD09 BH01 BH09 CC19 DD02 EE01 EE40 FF23
Claims (3)
53μm)の砥粒を樹脂結合剤で固着させ、圧縮弾性率
が200〜1200MPa、引っ張り破壊伸びが1.0
〜6.0%の砥石を用いてアルミ合金製円筒管を電解複
合研磨により加工する工程を含むことを特徴とする、ア
ルミ合金製感光ドラムの製造方法。(1) a particle size of # 80 to # 220 (particle size of 180 to
53 μm) abrasive grains are fixed with a resin binder, the compression elastic modulus is 200 to 1200 MPa, and the tensile breaking elongation is 1.0.
A method for manufacturing an aluminum alloy photosensitive drum, comprising a step of processing an aluminum alloy cylindrical tube by electrolytic combined polishing using a grinding stone of up to 6.0%.
〜2.0μm)の砥粒を樹脂結合剤で固着させ、圧縮弾
性率が50〜300MPa、引っ張り破壊伸びが1.0
〜4.0%の砥石を用いてアルミ合金製円筒管を電解複
合研磨により加工する工程を含むことを特徴とする、ア
ルミ合金製感光ドラムの製造方法。2. A particle size of from # 320 to # 6000 (particle size of 40
2.02.0 μm) are fixed with a resin binder, the compression modulus is 50 to 300 MPa, and the tensile breaking elongation is 1.0.
A method for manufacturing an aluminum alloy photosensitive drum, comprising a step of processing an aluminum alloy cylindrical tube by electrolytic combined polishing using a grinding stone of up to 4.0%.
工程により粗又は中間研磨をした後、請求項2記載の加
工工程により表面粗さが0.1〜2.0μmRy、真円
度が25μm以下に仕上げ研磨することを特徴とする、
アルミ合金製感光ドラムの製造方法。3. An aluminum alloy cylindrical tube is roughened or intermediately polished by the processing step described in claim 1, and then has a surface roughness of 0.1 to 2.0 μmRy and roundness by the processing step described in claim 2. Is characterized by being finish-polished to 25 μm or less,
Manufacturing method of aluminum alloy photosensitive drum.
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JP30290899A JP3856419B2 (en) | 1999-10-25 | 1999-10-25 | Manufacturing method of aluminum alloy photosensitive drum |
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Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS531391A (en) * | 1976-06-25 | 1978-01-09 | Nippon Tokushu Kento Kk | Method of manufacturing microohole polyvinyl acetal grindstone |
JPS58139153A (en) * | 1982-02-12 | 1983-08-18 | Shindengen Electric Mfg Co Ltd | Electrophotographic receptor |
JPH0531628A (en) * | 1991-07-26 | 1993-02-09 | Hitachi Zosen Corp | Electrolytic combined grinding method for cylindrical workpiece |
JPH0565941A (en) * | 1991-09-06 | 1993-03-19 | Fuji Xerox Co Ltd | Vibration absorber for cylindrical body surface machining |
JPH11347843A (en) * | 1998-06-05 | 1999-12-21 | Nissin Unyu Kogyo Kk | Electrolytic composite polishing method for metal pipe peripheral face and photosensitive drum substrate formed by this method |
JP2000122310A (en) * | 1998-10-14 | 2000-04-28 | Nisshin Unyu Kogyo Kk | Production of mirror surface pipe for photorecertive drum of copying machine or the like |
-
1999
- 1999-10-25 JP JP30290899A patent/JP3856419B2/en not_active Expired - Lifetime
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS531391A (en) * | 1976-06-25 | 1978-01-09 | Nippon Tokushu Kento Kk | Method of manufacturing microohole polyvinyl acetal grindstone |
JPS58139153A (en) * | 1982-02-12 | 1983-08-18 | Shindengen Electric Mfg Co Ltd | Electrophotographic receptor |
JPH0531628A (en) * | 1991-07-26 | 1993-02-09 | Hitachi Zosen Corp | Electrolytic combined grinding method for cylindrical workpiece |
JPH0565941A (en) * | 1991-09-06 | 1993-03-19 | Fuji Xerox Co Ltd | Vibration absorber for cylindrical body surface machining |
JPH11347843A (en) * | 1998-06-05 | 1999-12-21 | Nissin Unyu Kogyo Kk | Electrolytic composite polishing method for metal pipe peripheral face and photosensitive drum substrate formed by this method |
JP2000122310A (en) * | 1998-10-14 | 2000-04-28 | Nisshin Unyu Kogyo Kk | Production of mirror surface pipe for photorecertive drum of copying machine or the like |
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