JPH063947A - Development sleeve - Google Patents
Development sleeveInfo
- Publication number
- JPH063947A JPH063947A JP4186063A JP18606392A JPH063947A JP H063947 A JPH063947 A JP H063947A JP 4186063 A JP4186063 A JP 4186063A JP 18606392 A JP18606392 A JP 18606392A JP H063947 A JPH063947 A JP H063947A
- Authority
- JP
- Japan
- Prior art keywords
- developing sleeve
- base material
- outer peripheral
- peripheral surface
- roughness
- 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
Landscapes
- Magnetic Brush Developing In Electrophotography (AREA)
- Dry Development In Electrophotography (AREA)
- Grinding Of Cylindrical And Plane Surfaces (AREA)
- Rolls And Other Rotary Bodies (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、電子写真複写機やレー
ザプリンタ等の画像形成装置の現像装置に用いられる現
像スリーブに関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a developing sleeve used in a developing device of an image forming apparatus such as an electrophotographic copying machine or a laser printer.
【０００２】[0002]
【従来の技術】従来、例えば電子写真方を利用した画像
形成装置においては、電子写真感光体に形成された静電
潜像を現像装置により現像剤で現像して、トナー像とし
て可視化することを行なっており、現像装置は、その現
像容器内に収容された現像剤を担持して、静電潜像が形
成された感光体と対向した現像部へ搬送するための現像
剤担持体、即ち、通常円筒状とされる現像スリーブを備
えている。2. Description of the Related Art Conventionally, in an image forming apparatus utilizing electrophotography, for example, an electrostatic latent image formed on an electrophotographic photosensitive member is developed with a developer by a developing device to be visualized as a toner image. The developing device carries a developer contained in the developing container and conveys the developer to a developing section facing the photoconductor on which the electrostatic latent image is formed, that is, The developing sleeve normally has a cylindrical shape.
【０００３】現像スリーブは、一成分現像剤、二成分現
像剤、或いは磁性現像剤、非磁性現像剤、更には絶縁性
現像剤、誘電性現像剤を問わず、現像剤をその外周表面
に均一に塗布してムラのない現像剤薄層を形成し得るよ
うに、表面に微細凹凸を付けることが必須な技術とされ
て来た。The developing sleeve is a one-component developer, a two-component developer, a magnetic developer, a non-magnetic developer, an insulating developer or a dielectric developer, and the developer is uniformly distributed on the outer peripheral surface thereof. It has been considered an essential technique to form fine unevenness on the surface so that a uniform developer thin layer can be formed by applying to the surface.
【０００４】現像スリーブの表面に微細凹凸をつける方
法としては、（１）サンドペーパで現像スリーブ表面を
擦るサンドペーパ法（特開昭５５−１４０８５８）、
（２）球形粒子によるサンドブラスト法（特開昭５５−
１４０８５８）、（３）鋭い突起を有する不定型粒子に
よるサンドブラスト法（特開昭５７−６６４７５）、
（４）上記の（２）と（３）の方法を組合せた方法（特
開昭５８−１１９７４）などが提案され、実施されてい
る。As a method for forming fine irregularities on the surface of the developing sleeve, (1) sand paper method of rubbing the surface of the developing sleeve with sand paper (Japanese Patent Laid-Open No. 55-140858),
(2) Sandblast method using spherical particles (Japanese Patent Laid-Open No. 55-
140858), (3) sand blasting method using amorphous particles having sharp protrusions (JP-A-57-66475),
(4) A method in which the methods (2) and (3) are combined (Japanese Patent Laid-Open No. 58-11974) has been proposed and implemented.
【０００５】[0005]
【発明が解決しようとする課題】上記の方法によれば、
いずれも、現像スリーブ上に現像剤の均一な薄層を形成
可能なように、現像スリーブの表面に微細凹凸を付ける
ことができるが、上記（１）のサンドぺーパーで擦る方
法では、微細凹凸は擦り方向に連続した凹凸になり易
く、微細凹凸の形状、精度等を正確に制御することがで
きない。（２）、（３）及び（４）のサンドブラスト法
はバッチ処理に適するが、クローズド系のために連続処
理には向かない。According to the above method,
In either case, the surface of the developing sleeve can be provided with fine irregularities so that a uniform thin layer of the developer can be formed on the developing sleeve. However, in the method (1) of rubbing with a sandpaper, fine irregularities can be obtained. Is liable to form continuous irregularities in the rubbing direction, and the shape and accuracy of the fine irregularities cannot be accurately controlled. The sandblasting methods (2), (3) and (4) are suitable for batch processing, but are not suitable for continuous processing due to the closed system.
【０００６】又従来の方法では、現像スリーブ基材を得
た後、その表面の粗度をコントロールする別の工程を付
加するために、コストが高く、精度や現像スリーブの傷
等による製品歩留りが低下する問題もあった。Further, in the conventional method, after the developing sleeve base material is obtained, another step for controlling the roughness of the surface is added, so that the cost is high and the product yield due to the accuracy and scratches on the developing sleeve is high. There was also a problem of decline.
【０００７】又ゴースト改良等の画質向上のための導電
コート層を表面に塗布する現像スリーブでは、ブラスト
等を行なわずに、塗工で表面状態をコントロールする方
法が提案されているが、精度良く表面の状態をコントロ
ールすることが困難であるという問題も生じていた。For a developing sleeve in which a conductive coating layer for improving image quality such as ghost improvement is applied on the surface, a method of controlling the surface condition by coating without blasting has been proposed, but with high accuracy. There has also been a problem that it is difficult to control the surface condition.
【０００８】従って本発明の目的は、微細凹凸の形状、
精度等を正確に制御することができ、然も連続処理する
こともできる、品質が向上し、コストを低下することが
できる現像スリーブを提供することである。Therefore, an object of the present invention is to form the shape of fine unevenness,
It is an object of the present invention to provide a developing sleeve which can be accurately controlled in accuracy and the like, can be continuously processed, can be improved in quality, and can be reduced in cost.
【０００９】[0009]
【課題を解決するための手段】上記目的は本発明に係る
現像スリーブにて達成される。要約すれば本発明は、像
担持体上に形成された静電潜像を現像する現像剤をその
外周面上に担持して、前記像担持体と対向した現像部に
搬送するのに使用される現像スリーブであって、円筒状
金属基材の外周面に、センタレス研削加工により粗さＲ
ａ０．５〜４．０の微細凹凸を形成してなることを特徴
とする現像スリーブである。The above object can be achieved by the developing sleeve according to the present invention. In summary, the present invention is used to carry a developer for developing an electrostatic latent image formed on an image bearing member on its outer peripheral surface and convey it to a developing section facing the image bearing member. A developing sleeve which has a roughness R by centerless grinding on the outer peripheral surface of a cylindrical metal substrate.
and a developing sleeve having fine irregularities of 0.5 to 4.0.
【００１０】本発明の他の態様によれば、センタレス研
削加工の代わりに電解砥粒研摩加工により、円筒状金属
基材の外周面に粗さＲａ０．５〜４．０の微細凹凸を形
成することができる。According to another aspect of the present invention, fine irregularities having a roughness Ra of 0.5 to 4.0 are formed on the outer peripheral surface of the cylindrical metal base material by electrolytic abrasive grain polishing processing instead of centerless grinding processing. be able to.
【００１１】いずれも、前記微細凹凸形成後の金属基材
の外周面上にカーボン１〜１０重量部／グラファイト０
〜６０重量部／フェノール樹脂１００重量部の組成から
なる３〜２０μｍ厚の塗工層を形成することができる。In each case, 1 to 10 parts by weight of carbon / graphite 0 is formed on the outer peripheral surface of the metal base material after the fine irregularities are formed.
A coating layer having a thickness of 3 to 20 μm and having a composition of ˜60 parts by weight / phenol resin 100 parts by weight can be formed.
【００１２】[0012]
【実施例】図１は、本発明の一実施例に係る現像スリー
ブを示す断面図である。本実施例の現像スリーブ３Ａ
は、円筒状アルミニウム基材の外周面に、センタレス研
削加工により粗さＲａ０．５〜４．０の微細凹凸を形成
したことが特徴である。FIG. 1 is a sectional view showing a developing sleeve according to an embodiment of the present invention. Developing sleeve 3A of this embodiment
Is characterized in that fine irregularities having a roughness Ra of 0.5 to 4.0 were formed on the outer peripheral surface of a cylindrical aluminum base material by centerless grinding.
【００１３】図２に、本実施例の現像スリーブ３Ａの製
造に使用するセンタレス研削機の主要部の断面図を示
す。図２に示すように、センタレス研削機は、研削砥石
車１と、これと間隔を開けた調整車２と、研削砥石車１
と調整車２との間に送り込まれる、現像スリーブ３Ａ用
の円筒状アルミニウム基材３を支持するブレード４とを
備えてなっている。FIG. 2 is a sectional view of the main part of the centerless grinding machine used for manufacturing the developing sleeve 3A of this embodiment. As shown in FIG. 2, the centerless grinding machine includes a grinding wheel 1, an adjusting wheel 2 spaced apart from the wheel 1, and a grinding wheel 1.
And a blade 4 supporting the cylindrical aluminum base material 3 for the developing sleeve 3A, which is fed between the adjusting wheel 2 and the adjusting wheel 2.
【００１４】予め距離調整の済んだ砥石車１と調整車２
との間に、ワークである円筒状アルミニウム基材３をブ
レード４で支持して研削水溶液を流しながら送り込む
と、調整車２の回転によりアルミニウム基材３に回転が
与えられ、基材３の回転に従動して回転する砥石車１に
より、基材３の外周面が研削されて行く。Grinding wheel 1 and adjusting wheel 2 whose distances have been adjusted in advance
In between, the cylindrical aluminum base material 3 as a work is supported by the blade 4 and is fed while flowing the grinding aqueous solution, whereby the aluminum base material 3 is rotated by the rotation of the adjusting wheel 2 and the base material 3 is rotated. The outer peripheral surface of the base material 3 is ground by the grinding wheel 1 that is driven and rotated.
【００１５】本実施例では、このような研削砥石車１を
用いた研削加工により、アルミニウム基材３の外周面に
所定の粗度の粗面を形成し、これを現像スリーブ３Ａと
するのである。これによれば、アルミニウム基材３の外
周面に微細凹凸の形状、精度等を正確に制御して形成で
き、得られた現像スリーブ３Ａの品質が向上する。又連
続処理することができるので、コストを低下することも
できる。In this embodiment, a rough surface having a predetermined roughness is formed on the outer peripheral surface of the aluminum base material 3 by the grinding process using the grinding wheel 1 as described above, and this is used as the developing sleeve 3A. . According to this, it is possible to form the fine irregularities on the outer peripheral surface of the aluminum base material 3 by controlling the shape, accuracy, etc. of the fine irregularities accurately, and the quality of the obtained developing sleeve 3A is improved. Further, since the continuous treatment can be performed, the cost can be reduced.
【００１６】本発明によれば、アルミニウム基材３の外
周面に形成する粗さは、Ｒａが０．５〜４．０、好まし
くは２．０〜３．０とされる。According to the present invention, the roughness formed on the outer peripheral surface of the aluminum base material 3 has Ra of 0.5 to 4.0, preferably 2.0 to 3.0.
【００１７】研削加工に研削砥石車１を用いた場合、ア
ルミニウム基材３の外周面に付与される粗さは、大別す
れば、研削砥石車１の砥粒の粒度、周速度、アルミニウ
ム基材３の周速度に依存するが、そのうちの砥石車１の
砥粒粒度が支配的要因であると言ってよい。When the grinding wheel 1 is used for grinding, the roughness imparted to the outer peripheral surface of the aluminum base material 3 is roughly classified into the grain size of the abrasive grains of the grinding wheel 1, the peripheral speed and the aluminum base. Although it depends on the peripheral speed of the material 3, it can be said that the abrasive grain size of the grinding wheel 1 is the dominant factor.
【００１８】そこで、アルミニウム基材３の外周面に所
定の粗さの粗面を得るには、砥石車１の砥粒粒度を選択
することになり、粗さＲａを０．５〜４．０、好ましく
は２．０〜３．０を得るためには、研削砥石車１の砥粒
粒度を＃４６〜＃２２０の範囲から選定すればよい。Therefore, in order to obtain a rough surface having a predetermined roughness on the outer peripheral surface of the aluminum base material 3, the abrasive grain size of the grinding wheel 1 is selected, and the roughness Ra is 0.5 to 4.0. In order to obtain preferably 2.0 to 3.0, the abrasive grain size of the grinding wheel 1 may be selected from the range of # 46 to # 220.
【００１９】上記のＲａ＝０．５〜４．０の粗さは、通
常感覚で言えばかなり粗い感じになるが、研削に使用す
る砥石車１の砥粒粒度が粗ければ粗いほど、アルミニウ
ム基材３の切削抵抗が減少するので、研削によって得ら
れた現像スリーブ３Ａは、円筒体の真直度、外径寸法の
精度が向上する。The above-mentioned roughness of Ra = 0.5 to 4.0 is rather coarse in a normal sense, but the coarser the abrasive grain size of the grinding wheel 1 used for grinding, the more the aluminum becomes. Since the cutting resistance of the base material 3 is reduced, the developing sleeve 3A obtained by grinding improves the straightness of the cylindrical body and the accuracy of the outer diameter dimension.
【００２０】以上のように、本実施例によれば、アルミ
ニウム基材３の外周面をセンタレス研削して所定の範囲
の粗度の粗面を形成したので、得られる現像スリーブ３
Ａは、外周面に形状、精度等が正確に制御された微細凹
凸を有し、且つ寸法精度等も高く、品質が向上する。又
アルミニウム基材３の外周面の研削により、所定外径と
所定粗さの外周面を有する現像スリーブ３Ａが得られ、
つまり連続処理することができるので、コストを低下す
ることもできる。As described above, according to the present embodiment, the outer peripheral surface of the aluminum base material 3 is centerless ground to form a rough surface having a roughness within a predetermined range.
A has fine irregularities whose shape, accuracy, etc. are accurately controlled on the outer peripheral surface, and has high dimensional accuracy, etc., which improves quality. Further, by grinding the outer peripheral surface of the aluminum base material 3, a developing sleeve 3A having an outer peripheral surface having a predetermined outer diameter and a predetermined roughness is obtained.
That is, since the continuous processing can be performed, the cost can be reduced.
【００２１】実施例２ 図３は、本発明の実施例２に係る現像スリーブを示す断
面図である。本実施例の現像スリーブ３Ｂは、実施例１
のセンタレス研削加工後のアルミニウム基材３の外周面
上に更に塗工層５を設けたことが特徴である。この塗工
層５の組成は、カーボン５重量部／グラファイト４５重
量部／フェノール樹脂１００重量部からなり、導電塗工
層となっている。Embodiment 2 FIG. 3 is a sectional view showing a developing sleeve according to Embodiment 2 of the present invention. The developing sleeve 3B of this embodiment is the same as that of the first embodiment.
The feature is that the coating layer 5 is further provided on the outer peripheral surface of the aluminum base material 3 after the centerless grinding. The composition of the coating layer 5 is 5 parts by weight of carbon / 45 parts by weight of graphite / 100 parts by weight of phenol resin, and is a conductive coating layer.
【００２２】本実施例では、上記の組成を有する組成物
を３２ｗｔ％イソプロピルアルコール溶液に調製した塗
工液を得、これを研削加工後のアルミニウム基材３の外
周面上にスプレー塗装し、１５０℃、２０分の加熱によ
り架橋させて硬化させ、これにより外周表面に厚さ５〜
１０μｍの塗工層５を有する現像スリーブ３Ｂを得た。
このようにして得られた現像スリーブ３Ｂの外周面は、
センターレス研削面に得た粗さよりＲａが０．２〜０．
４程度減少するだけで、研削による微細凹凸は維持され
ている。In this example, a coating solution prepared by preparing a 32 wt% isopropyl alcohol solution containing the above composition was spray-coated on the outer peripheral surface of the aluminum base material 3 after grinding, By heating for 20 minutes at ℃, it is cross-linked and hardened.
A developing sleeve 3B having a coating layer 5 of 10 μm was obtained.
The outer peripheral surface of the developing sleeve 3B thus obtained is
Ra was 0.2 to 0. 0 based on the roughness obtained on the centerless ground surface.
The fine irregularities due to the grinding are maintained only by reducing by about 4.
【００２３】本実施例の現像スリーブ３Ｂによれば、実
施例１のときと同様、品質が向上する等だけでなく、外
周面上に導電性の塗工層５を設けたので、これを現像に
使用して得られた画像のゴースト等の改良、画質向上を
更に高めることができる。According to the developing sleeve 3B of this embodiment, as in the case of the first embodiment, not only the quality is improved, but also the conductive coating layer 5 is provided on the outer peripheral surface. It is possible to further improve the ghost and the like of the image obtained by using the above and further improve the image quality.
【００２４】実施例３ 本実施例では、円筒状アルミニウム基材の外周面に、電
解砥粒研摩法によって粗さＲａ０．５〜４．０の微細凹
凸を形成したことが特徴である。Example 3 This example is characterized in that fine irregularities having a roughness Ra of 0.5 to 4.0 were formed on the outer peripheral surface of a cylindrical aluminum base material by electrolytic grain polishing.
【００２５】図４は、本実施例で使用する電解砥粒研摩
法を示す説明図である。円筒状アルミニウム基材３の外
周面に保持具７の先端に保持された研削材６を当て、保
持具７及び研削材６内を通ってその先端表面に開口する
溶液通路８内に電解液を下降する向きに流しながら、基
材３を陽極とし保持具７を陰極として、１Ａ／ｃｍ2未
満の低電流密度で基材３表面を砥粒研磨する。FIG. 4 is an explanatory view showing the electrolytic abrasive grain polishing method used in this embodiment. The abrasive 6 held at the tip of the holder 7 is applied to the outer peripheral surface of the cylindrical aluminum base material 3, and the electrolytic solution is passed through the inside of the holder 7 and the abrasive 6 and into the solution passage 8 opening at the tip surface. While flowing in the descending direction, the surface of the base material 3 is abraded with the base material 3 as an anode and the holder 7 as a cathode at a low current density of less than 1 A / cm 2 .
【００２６】本実施例では、電解液としては、通常用い
られる２０ｗｔ％程度の硝酸ソーダ水溶液を使用した。
研削材６は樹脂含浸研削材で、アルミニウム基材３の外
周面に得る粗さＲａ０．５〜４．０に相当する＃１００
〜＃４００程度の粗度の砥粒を分散して、樹脂で接着し
たナイロン系の不織布等からなっているものを使用し
た。In this embodiment, as the electrolytic solution, a commonly used sodium nitrate aqueous solution of about 20 wt% was used.
The abrasive 6 is a resin-impregnated abrasive, and is # 100 corresponding to a roughness Ra of 0.5 to 4.0 obtained on the outer peripheral surface of the aluminum base material 3.
Approximately # 400 abrasive grains having a roughness of about # 400 were dispersed, and a non-woven fabric made of nylon or the like bonded with a resin was used.
【００２７】本実施例の電解で使用する低い電流密度の
範囲では、基材３が例えばアルミニウムやステンレス鋼
の材質の場合、陽極電流の殆どが不働態被膜の形成やＮ
Ｏｘ、Ｏ2 などのガス発生に費やされ、陽極の基材３の
金属のイオン化による電解溶出には寄与しないため、電
流効率はゼロに近い。In the low current density range used in the electrolysis of this embodiment, when the substrate 3 is made of, for example, aluminum or stainless steel, most of the anode current forms a passive film or N.
The current efficiency is close to zero because it is consumed to generate gas such as Ox and O 2 and does not contribute to electrolytic elution due to ionization of the metal of the base material 3 of the anode.
【００２８】それが、砥粒の擦過により基材３から被膜
が除去されて下地の金属が露出すると、その部分の電解
溶出量が急増し、電流効率は瞬間的に１００％近くにな
る。そして時間の経過と共に再形成される不働態被膜の
厚さが増大し、電流効率は対数的に低下する非定常過程
をたどるが、何秒か毎に砥粒による被膜除去が繰り返さ
れ、凸部の電流効率の時間平均値は数１０％以上の高レ
ベルになる。However, when the coating film is removed from the base material 3 by the abrasion of the abrasive grains and the underlying metal is exposed, the amount of electrolytic elution at that portion suddenly increases, and the current efficiency instantaneously approaches 100%. Then, the thickness of the passive film that is reformed over time increases and the current efficiency follows a non-steady process that decreases logarithmically, but the film removal by abrasive grains is repeated every few seconds, and The time average value of the current efficiency of is a high level of several 10% or more.
【００２９】図５はその様子を模式的に示した図で、基
材３の外周面からの砥粒による不働態被膜３ａの除去と
電解による基材金属３ｂの除去が繰り返される。FIG. 5 is a diagram schematically showing this state, in which the removal of the passivation film 3a from the outer peripheral surface of the base material 3 by abrasive grains and the removal of the base metal 3b by electrolysis are repeated.
【００３０】本実施例では、以上のような電解砥粒研摩
により、円筒状アルミニウム基材３の外周面に粗さＲａ
０．５〜４．０、好ましくは２．０〜３．０の微細凹凸
を形成して、これを現像スリーブとした。In this embodiment, the roughness Ra is formed on the outer peripheral surface of the cylindrical aluminum base material 3 by the electrolytic grain polishing as described above.
Fine irregularities of 0.5 to 4.0, preferably 2.0 to 3.0 were formed to obtain a developing sleeve.
【００３１】電解砥粒研摩にかける前のアルミニウム基
材３の外周面の粗度は、Ｒａ０．５〜４．０の範囲に近
い方がよいが、Ｒａ１．０未満でも、４．０超であって
も構わない。基材３の粗度がＲａ１．０未満での場合に
は、電解砥粒研摩により粗す結果になるが、勿論、問題
ない。The roughness of the outer peripheral surface of the aluminum base material 3 before being subjected to electrolytic abrasive grain polishing should be close to the range of Ra 0.5 to 4.0, but even if it is less than Ra 1.0, it is more than 4.0. It doesn't matter. When the roughness of the base material 3 is less than Ra 1.0, the result is roughened by electrolytic abrasive grain polishing, but of course, there is no problem.
【００３２】本実施例によっても、得られる現像スリー
ブは、外周面に形状、精度等が正確に制御された微細凹
凸を有し、且つ寸法精度等も高く、品質が向上し、連続
処理によりコストを低下することもできる。Also in this embodiment, the developing sleeve obtained has fine irregularities on the outer peripheral surface whose shape, precision, etc. are precisely controlled, has high dimensional precision, etc. Can also be reduced.
【００３３】実施例４ 本実施例の現像スリーブでは、実施例３の電解砥粒研摩
加工後のアルミニウム基材３の外周面上に、実施例２の
ときの塗工層５と同様な組成の塗工層を設けたことが特
徴である。Example 4 In the developing sleeve of this example, the composition similar to that of the coating layer 5 in Example 2 was applied to the outer peripheral surface of the aluminum base material 3 after electrolytic abrasive grain polishing in Example 3. The feature is that a coating layer is provided.
【００３４】本実施例によれば、実施例２のときと同
様、現像スリーブの品質等が向上し、現像画像のゴース
ト等の改良、画質向上を更に高めることができる。According to this embodiment, as in the case of the second embodiment, the quality of the developing sleeve is improved, the ghost of the developed image is improved, and the image quality is further improved.
【００３５】[0035]
【発明の効果】以上説明したように、本発明によれば、
円筒状金属基材の外周面にセンタレス研削加工又は電解
砥粒研摩加工により微細凹凸を形成して現像スリーブを
作成したので、その形状、精度等を正確に制御した微細
凹凸を有する現像スリーブが得られ、品質が向上するば
かりでなく、連続処理することもできるのでコストも低
下することができる。As described above, according to the present invention,
Since the development sleeve was created by forming fine irregularities on the outer peripheral surface of a cylindrical metal base material by centerless grinding or electrolytic abrasive grain polishing, a development sleeve with fine irregularities in which the shape, accuracy, etc. are accurately controlled is obtained. Therefore, not only the quality is improved, but also continuous processing can be performed, so that the cost can be reduced.
【図１】本発明の一実施例に係る現像スリーブを示す断
面図である。FIG. 1 is a cross-sectional view showing a developing sleeve according to an embodiment of the present invention.
【図２】図１の現像スリーブの製造に使用するセンタレ
ス研削機の主要部を示す断面図である。FIG. 2 is a cross-sectional view showing a main part of a centerless grinding machine used for manufacturing the developing sleeve of FIG.
【図３】本発明の他の実施例に係る現像スリーブを示す
断面図である。FIG. 3 is a sectional view showing a developing sleeve according to another embodiment of the present invention.
【図４】本発明の更に他の実施例に係る現像スリーブを
製造するのに使用する電解砥粒研摩法を示す説明図であ
る。FIG. 4 is an explanatory view showing an electrolytic abrasive grain polishing method used for manufacturing a developing sleeve according to still another embodiment of the present invention.
【図５】図４の電解砥粒研摩法によるアルミニウム基材
外周面の研摩の様子を示す模式図である。5 is a schematic diagram showing a state of polishing an outer peripheral surface of an aluminum base material by the electrolytic abrasive grain polishing method of FIG.
１ 砥石車 ３ アルミニウム基材 ３Ａ 現像スリーブ ３Ｂ 現像スリーブ ５ 塗工層 ６ 研摩材 1 Grinding Wheel 3 Aluminum Base Material 3A Developing Sleeve 3B Developing Sleeve 5 Coating Layer 6 Abrasive Material
Claims (3)
する現像剤をその外周面上に担持して、前記像担持体と
対向した現像部に搬送するのに使用される現像スリーブ
であって、円筒状金属基材の外周面に、センタレス研削
加工により粗さＲａ０．５〜４．０の微細凹凸を形成し
てなることを特徴とする現像スリーブ。1. A development used to carry a developer for developing an electrostatic latent image formed on an image carrier on its outer peripheral surface and convey it to a developing section facing the image carrier. A developing sleeve, characterized in that fine irregularities having a roughness Ra of 0.5 to 4.0 are formed on the outer peripheral surface of a cylindrical metal base material by centerless grinding.
に電解砥粒研摩加工により、円筒状金属基材の外周面に
粗さＲａ０．５〜４．０の微細凹凸を形成してなること
を特徴とする現像スリーブ。2. A fine concavo-convex having a roughness Ra of 0.5 to 4.0 is formed on the outer peripheral surface of the cylindrical metal base material by electrolytic abrasive grain polishing processing instead of the centerless grinding processing of claim 1. Characteristic developing sleeve.
上にカーボン１〜１０重量部／グラファイト０〜６０重
量部／フェノール樹脂１００重量部の組成からなる３〜
２０μｍ厚の塗工層を形成した請求項１又は２の現像ス
リーブ。3. The composition having a composition of 1 to 10 parts by weight of carbon / 0 to 60 parts by weight of graphite / 100 parts by weight of phenol resin on the outer peripheral surface of the metal base material on which the fine irregularities are formed.
The developing sleeve according to claim 1, wherein a coating layer having a thickness of 20 μm is formed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4186063A JPH063947A (en) | 1992-06-19 | 1992-06-19 | Development sleeve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4186063A JPH063947A (en) | 1992-06-19 | 1992-06-19 | Development sleeve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH063947A true JPH063947A (en) | 1994-01-14 |
Family
ID=16181745
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4186063A Pending JPH063947A (en) | 1992-06-19 | 1992-06-19 | Development sleeve |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH063947A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107639509A (en) * | 2017-10-26 | 2018-01-30 | 中建材衢州金格兰石英有限公司 | The grinding attachment and its method for grinding of stock quartz glass bar |
-
1992
- 1992-06-19 JP JP4186063A patent/JPH063947A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107639509A (en) * | 2017-10-26 | 2018-01-30 | 中建材衢州金格兰石英有限公司 | The grinding attachment and its method for grinding of stock quartz glass bar |
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