JPH0874839A - Development sleeve with shaft and its manufacture - Google Patents
Development sleeve with shaft and its manufactureInfo
- Publication number
- JPH0874839A JPH0874839A JP23845794A JP23845794A JPH0874839A JP H0874839 A JPH0874839 A JP H0874839A JP 23845794 A JP23845794 A JP 23845794A JP 23845794 A JP23845794 A JP 23845794A JP H0874839 A JPH0874839 A JP H0874839A
- Authority
- JP
- Japan
- Prior art keywords
- shaft
- cylindrical base
- base body
- developing sleeve
- cylindrical
- 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
- Wet Developing In Electrophotography (AREA)
- Dry Development In Electrophotography (AREA)
- Rolls And Other Rotary Bodies (AREA)
- Magnetic Brush Developing In Electrophotography (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、電子複写機、レーザビ
ームプリンタ、ファクシミリ等の電子写真方式の画像形
成装置における現像装置に用いる軸付き現像スリーブお
よびそ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 shaft-equipped developing sleeve used in a developing device in an electrophotographic image forming apparatus such as an electronic copying machine, a laser beam printer, and a facsimile, and a manufacturing method thereof.
【０００２】[0002]
【従来の技術】電子複写機、レーザビームプリンタ、フ
ァクシミリ等の電子写真方式の画像形成装置は、図８に
示すように、電子写真感光体１０１に形成された静電潜
像を現像剤１０３にて可視画像とするため、汲み上げロ
ール１０４により汲み上げられたホッパ１００内の現像
剤１０３を現像位置へと担持して搬送するための現像ス
リーブ１０２が前記電子写真感光体１０１と対向して配
設されたいわゆる現像装置を備えている（特開昭５８−
１１６５５９号公報、特開昭６３−２７１３７１号公報
参照）。このような現像装置において、現像剤が磁性ト
ナーである場合には、マグネットロールを内蔵するいわ
ゆるマグタイプ現像スリーブを使用し、現像剤が非磁性
トナーである場合にはマグネットロールを内蔵しないい
わゆるノンマグタイプ現像スリーブを使用している。2. Description of the Related Art In an electrophotographic image forming apparatus such as an electronic copying machine, a laser beam printer, a facsimile, an electrostatic latent image formed on an electrophotographic photosensitive member 101 is applied to a developer 103 as shown in FIG. In order to form a visible image by a drawing roller 104, a developing sleeve 102 for carrying and carrying the developer 103 in the hopper 100 drawn up by the drawing up roll 104 to the developing position is arranged opposite to the electrophotographic photosensitive member 101. And a so-called developing device (Japanese Patent Laid-Open No. 58-58).
116559, Japanese Patent Laid-Open No. 63-271371). In such a developing device, when the developer is a magnetic toner, a so-called mag-type developing sleeve containing a magnet roll is used, and when the developer is a non-magnetic toner, a so-called non-magnet roll is not included. Uses a mag type developing sleeve.
【０００３】濃度ムラの無い高品位画像を得るには、現
像スリーブの高形状精度、高面精度が要求されるため、
従来は以下に説明する（イ）または（ロ）の方法により
現像スリーブを製造していた。 （イ）旋盤を用い、円柱状のワークの両端部を保持して
前記ワークを回転させつつバイトに送りを与えて切削す
ることにより、円柱基体の両端部よりその軸方向へ突出
する軸部を削り出し、円柱基体とその両端部より軸方向
へ突出する軸部を有する現像スリーブを製造する方法。 （ロ）外周面を所定の形状精度、所定の表面粗さに仕上
げた円筒基体の両端部に軸部材を圧入または接着若しく
は両者を併用して固着することにより円筒基体とその両
端部より軸方向へ突出する軸部を有する現像スリーブを
製造する方法。In order to obtain a high-quality image without density unevenness, a high shape accuracy and a high surface accuracy of the developing sleeve are required.
Conventionally, the developing sleeve is manufactured by the method (a) or (b) described below. (A) Using a lathe, holding both ends of a cylindrical work piece while rotating the work piece to feed the cutting tool to cut the work piece so that a shaft portion protruding in the axial direction from both end portions of the cylindrical base body is cut. A method of manufacturing a developing sleeve having a cylindrical base body and a shaft portion protruding axially from both ends thereof. (B) A shaft member is press-fitted or adhered to or fixed to both ends of a cylindrical base body whose outer peripheral surface is finished to have a predetermined shape accuracy and a predetermined surface roughness by axially adhering to the cylindrical base body and both ends thereof. A method of manufacturing a developing sleeve having a shaft protruding inward.
【０００４】[0004]
【発明が解決しようとする課題】上記従来の技術のうち
（イ）は、ワークの両端部を保持して回転させつつバイ
トに送りを与えて切削するため、ワークが遠心力によっ
て変形したり、バイトの押圧力によって変形し、金属製
のワークを用いたとしても、円柱基体の両端部近傍を支
点とする円柱基体の振れおよび軸部の軸振れが各々３０
〜５０μｍ程度の軸付き現像スリーブしか製造すること
ができず、また、（ロ）についても円筒基体をいくら高
精度に仕上げたとしても該円筒基体の両端部に軸部材を
固着する際に軸心が倒れてしまい、円筒基体の両端部近
傍を支点とする円筒基体の振れおよび軸部の軸振れが各
々３０〜５０μｍ程度の軸付き現像スリーブしか製造す
ることができなかった。In the above-mentioned conventional technique (a), since both ends of the work are held and rotated, the work is fed and cut while being rotated, the work is deformed by centrifugal force, Even when a work made of metal is deformed due to the pressing force of the cutting tool, the deflection of the cylindrical base body and the axial deflection of the shaft portion, which are fulcrum near both ends of the cylindrical base body, are 30
Only a developing sleeve with a shaft of about 50 μm can be manufactured, and in (b), no matter how highly precise the cylindrical substrate is finished, the axial center is fixed when the shaft member is fixed to both ends of the cylindrical substrate. Therefore, it was possible to manufacture only a developing sleeve with a shaft, in which the deflection of the cylindrical substrate and the axial deflection of the shaft portion around the both ends of the cylindrical substrate as fulcrums are about 30 to 50 μm, respectively.
【０００５】従来の電子写真方式の画像形成装置は、上
述のような現像スリーブを用いているため、電子写真感
光体と現像スリーブとの間のギャップが軸方向に不均一
となることが避けられず、高品位な画像を形成すること
ができないという未解決の課題があった。Since the conventional electrophotographic image forming apparatus uses the developing sleeve as described above, it is possible to prevent the gap between the electrophotographic photosensitive member and the developing sleeve from being non-uniform in the axial direction. Therefore, there is an unsolved problem that a high-quality image cannot be formed.
【０００６】本発明は、上記従来の技術の有する未解決
の課題に鑑みてなされたものであって、電子写真感光体
と軸付き現像スリーブとの間のギャップを軸方向全体に
わたって均一にすることができる軸付き現像スリーブお
よびその製造方法を実現することを目的とするものであ
る。The present invention has been made in view of the above-mentioned unsolved problems of the prior art, and makes the gap between the electrophotographic photosensitive member and the shafted developing sleeve uniform throughout the axial direction. It is an object of the present invention to realize a developing sleeve with a shaft and a manufacturing method thereof.
【０００７】[0007]
【課題を解決するための手段】上記目的を達成するため
に、本発明の軸付き現像スリーブは、電子写真方式の画
像形成装置に用いる軸付き現像スリーブであって、金属
製の円柱基体と、該円柱基体の両端部より突出する軸部
を備え、前記円柱基体の両端部近傍を支点とした前記円
柱基体の振れおよび前記軸部の軸振れが各々２０μｍ以
下であることを特徴とするものである。In order to achieve the above-mentioned object, a developing sleeve with a shaft of the present invention is a developing sleeve with a shaft used in an electrophotographic image forming apparatus, which comprises a metal cylindrical base body, The cylindrical base body is provided with shaft portions projecting from both ends thereof, and the deflection of the cylindrical base body and the shaft deflection of the shaft portion with the vicinity of both end portions of the cylindrical base body as fulcrums are each 20 μm or less. is there.
【０００８】また、電子写真方式の画像形成装置に用い
る軸付き現像スリーブであって、金属製の円筒基体と、
該円筒基体の両端部に固着された軸部材を備え、該軸部
材は前記円筒基体の両端部より突出する軸部を有し、前
記円筒基体の両端部近傍を支点とした前記円筒基体の振
れおよび前記軸部の軸振れが各々２０μｍ以下であるこ
とを特徴とするものである。A shaft-equipped developing sleeve used in an electrophotographic image forming apparatus, comprising a metallic cylindrical base,
A shaft member fixed to both ends of the cylindrical base is provided, and the shaft member has a shaft protruding from both ends of the cylindrical base, and the deflection of the cylindrical base around the both ends of the cylindrical base as a fulcrum. And the axial runout of each of the shaft portions is 20 μm or less.
【０００９】さらに、円筒基体内にマグネットローラを
嵌挿し、前記円筒基体の外周面には平均表面粗さＲａが
１．５〜３．５μｍの範囲内である導電性粒子が分散さ
れた結着樹脂からなる表面層を形成したものである。Further, a magnet roller is fitted into the cylindrical base body, and the outer peripheral surface of the cylindrical base body is bound with conductive particles having an average surface roughness Ra within the range of 1.5 to 3.5 μm. A surface layer made of resin is formed.
【００１０】本発明の軸付き現像スリーブの製造方法
は、電子写真方式の画像形成装置に用いる軸付き現像ス
リーブの製造方法であって、金属製の円柱体の両端部を
切削することにより円柱基体およびその両端より突出す
る軸部を有するワークを作製し、ついで前記ワークをイ
ンフィードセンタレス研削機により前記円柱基体および
前記軸部の外周面を同時に研削することにより、前記円
柱基体の両端部近傍を支点とする前記円柱基体の振れお
よび前記軸部の軸振れが各々２０μｍ以下に仕上げるこ
とを特徴とするものである。A method of manufacturing a shaft-forming developing sleeve according to the present invention is a method of manufacturing a shaft-forming developing sleeve used in an electrophotographic image forming apparatus, in which both ends of a metal cylindrical body are cut to form a cylindrical substrate. And a workpiece having a shaft portion projecting from both ends thereof, and then by simultaneously grinding the workpiece with an in-feed centerless grinding machine to the outer peripheral surface of the cylindrical base body and the shaft portion, near the both end portions of the cylindrical base body. It is characterized in that the deflection of the cylindrical base body serving as a fulcrum and the axial deflection of the shaft portion are each finished to 20 μm or less.
【００１１】また、電子写真方式の画像形成装置に用い
る軸付き現像スリーブの製造方法であって、金属製の円
柱体の中央部寄りの部位を把持してその両端部を切削す
ることにより円柱基体およびその両端より突出する軸部
を有するワークを作製し、ついで前記ワークの前記軸部
を把持して前記ワークの円柱基体の外周面を切削するこ
とにより、前記円柱基体の両端部近傍を支点とする前記
円柱基体の振れおよび前記軸部の軸振れが各々２０μｍ
以下に仕上げることを特徴とするものである。A method of manufacturing a developing sleeve with a shaft for use in an electrophotographic image forming apparatus, in which a cylindrical base body is gripped at a portion near the center and both ends thereof are cut to form a cylindrical base body. And a work having a shaft portion projecting from both ends thereof is produced, and then by gripping the shaft portion of the work and cutting the outer peripheral surface of the cylindrical base of the work, the vicinity of both end portions of the cylindrical base is used as a fulcrum. And the axial runout of the shaft portion is 20 μm.
It is characterized by finishing as follows.
【００１２】さらに、電子写真方式の画像形成装置に用
いる軸付き現像スリーブの製造方法であって、金属製の
円筒基体の両端部に軸部を有する軸部材を固着して円筒
基体の両端部より突出する軸部を持つワークを作製し、
ついで前記ワークをインフィードセンタレス研削機によ
り前記円筒基体および前記軸部の外周面を同時に研削す
ることにより、前記円筒基体の両端部近傍を支点とする
前記円筒基体の振れおよび前記軸部の軸振れが各々２０
μｍ以下に仕上げることを特徴とするものである。Furthermore, in a method of manufacturing a developing sleeve with a shaft used in an electrophotographic image forming apparatus, a shaft member having a shaft portion is fixed to both end portions of a metallic cylindrical base body, and the shaft member is attached from both end portions of the cylindrical base body. Create a work with a protruding shaft,
Then, by simultaneously grinding the outer peripheral surfaces of the cylindrical base body and the shaft portion of the workpiece with an in-feed centerless grinder, the deflection of the cylindrical base body and the axial deflection of the shaft portion with the vicinity of both ends of the cylindrical base body as fulcrums 20 for each
It is characterized in that it is finished to less than μm.
【００１３】加えて、電子写真方式の画像形成装置に用
いるマグネットタイプの軸付き現像スリーブの製造方法
であって、金属製の円筒基体の一端に軸部を有する軸部
材を固着することにより円筒基体の一端より突出する軸
部を有するワークを作製し、前記ワークをインフィード
センタレス研削機により前記円筒基体および前記円筒基
体の一端より突出する軸部の外周面を同時に研削したの
ち、前記円筒基体の外周面に導電性粒子が分散された結
着樹脂からなる平均表面粗さＲａが１．５〜３．５μｍ
の範囲内である表面層を形成し、ついで前記円筒基体内
にマグネットロールを嵌挿したのち前記円筒基体の他端
に軸部を有する軸部材を固着し、これを端部加工機の保
持部材により保持固定して前記円筒基体の他端より突出
する軸部を該軸部の囲りを回動するカッタで切削し、前
記円筒基体の両端部を支点とする前記円筒基体の振れお
よび前記軸部の軸振れが各々２０μｍ以下に仕上げるこ
とを特徴とするものである。In addition, in a method of manufacturing a magnet type developing sleeve with a shaft for use in an electrophotographic image forming apparatus, a cylindrical base is formed by fixing a shaft member having a shaft portion to one end of a metallic cylindrical base. A workpiece having a shaft portion projecting from one end of the cylindrical base body is ground by an in-feed centerless grinder at the same time, and the outer peripheral surface of the shaft portion projecting from one end of the cylindrical base body is ground. The average surface roughness Ra made of a binder resin in which conductive particles are dispersed on the outer peripheral surface is 1.5 to 3.5 μm.
A surface layer is formed, and then a magnet roll is inserted into the cylindrical base body, and then a shaft member having a shaft portion is fixed to the other end of the cylindrical base body, which is a holding member of an end processing machine. The shaft portion projecting from the other end of the cylindrical base body is held and fixed by means of a cutter that rotates around the shaft portion, and the runout of the cylindrical base body and the shaft with both ends of the cylindrical base body as fulcrums The shaft runout of each part is finished to 20 μm or less.
【００１４】[0014]
【作用】実験の結果、濃度ムラの無い画像を形成するた
めには、電子写真感光体と軸付き現像スリーブの間のギ
ャップ（間隙）を両者の軸方向に均一とすることが重要
であるという知見を得た。As a result of the experiment, in order to form an image without density unevenness, it is important to make the gap between the electrophotographic photosensitive member and the shafted developing sleeve uniform in both axial directions. I got the knowledge.
【００１５】本発明は上記知見に基づいてなされたもの
であって、円柱基体の両端部近傍を支点とする円柱基体
の振れとその両端から軸方向に突出する軸部の軸振れが
各々２０μｍ以下である軸付き現像スリーブを電子写真
感光体に対向配設することで、両者のギャップが軸方向
全体にわたって均一なものとなり、濃度ムラの無い高品
位の画像を形成することができる。The present invention has been made on the basis of the above-mentioned findings, and the runout of the cylindrical base body with the vicinity of both ends of the cylindrical base body as fulcrums and the axial runout of the shaft portion projecting axially from both ends thereof are 20 μm or less. By disposing the shaft-equipped developing sleeve facing the electrophotographic photosensitive member, the gap between the two becomes uniform over the entire axial direction, and a high-quality image without density unevenness can be formed.
【００１６】[0016]
（実施例１）本実施例はノンマグタイプの軸付き現像ス
リーブの製造方法であって、図１は、本実施例の軸付き
現像スリーブの製造方法の工程を示す説明図である。(Embodiment 1) This embodiment is a method for manufacturing a non-mag type developing sleeve with a shaft, and FIG. 1 is an explanatory view showing the steps of the method for manufacturing a developing sleeve with a shaft of this embodiment.
【００１７】 先ず、図１の（ａ）に示すように、外
径：１６．１ｍｍ、内径：１３Ｈ９ｍｍ、長さ：２８０
ｍｍの金属製の円筒体であるアルミニウム製パイプの両
端部に端部加工機により内径：１３．４±０．００５ｍ
ｍ、長さ：８ｍｍのインロー部１ａを形成した円筒基体
１と、アルミニウム製棒体を粗切削加工することによ
り、外径：１３．４１±０．００３ｍｍ、長さ：６ｍｍ
の嵌合部２ｂと、外径：８．０７ｍｍ、長さ：１０ｍｍ
の軸部２ａを持つ軸部材２をそれぞれ作製する。First, as shown in FIG. 1A, the outer diameter is 16.1 mm, the inner diameter is 13H9 mm, and the length is 280.
Internal diameter: 13.4 ± 0.005m by end processing machine at both ends of aluminum pipe which is a metal cylinder of mm
The outer diameter: 13.41 ± 0.003 mm, the length: 6 mm by roughly cutting the cylindrical base body 1 in which the spigot part 1 a having a length of 8 mm and the aluminum base body is formed.
Fitting part 2b, outer diameter: 8.07 mm, length: 10 mm
The shaft members 2 having the shaft portions 2a are manufactured respectively.
【００１８】 上記工程ののち、図１の（ｂ）に示
すように、円筒基体１の両端部のインロー部１ａに軸部
材２の嵌合部２ｂを圧入して固着し、ワークＷ1 を作製
する。After the above steps, as shown in FIG. 1B, the fitting portions 2b of the shaft member 2 are press-fitted and fixed to the spigot portions 1a at both ends of the cylindrical substrate 1 to produce the work W 1 . To do.
【００１９】 上記工程によって得たワークＷ1
を、図１の（ｃ）に示すように、軸部２ａの外周面を研
削するための大径部４ａと円筒基体１の外周面を研削す
るための小径部４ｂを持つ砥石車４と、これに対向して
配設された調整車３を備えたインフィードセンタレス研
削機により、軸部２ａの外周面および円筒基体１の外周
面を同時に研削することにより、円筒基体１の外径を１
６±０．０２ｍｍ、軸部２ａの外径を８ｆ９ｍｍに仕上
げ、円筒基体１とその両端部より突出する軸部２ａを有
する軸付き現像スリーブを作製する。Workpiece W 1 obtained by the above process
As shown in FIG. 1 (c), a grinding wheel 4 having a large diameter portion 4a for grinding the outer peripheral surface of the shaft portion 2a and a small diameter portion 4b for grinding the outer peripheral surface of the cylindrical substrate 1, The outer diameter of the cylindrical base 1 is reduced to 1 by simultaneously grinding the outer peripheral surface of the shaft portion 2a and the outer peripheral surface of the cylindrical base 1 with an in-feed centerless grinding machine provided with an adjusting wheel 3 arranged opposite to this.
6 ± 0.02 mm, the outer diameter of the shaft portion 2a is finished to 8f9 mm, and a developing sleeve with a shaft having the cylindrical base 1 and the shaft portions 2a protruding from both ends thereof is manufactured.
【００２０】本実施例によって作製された軸付き現像ス
リーブの円筒基体１の両端部近傍（円筒基体の両端より
中央寄り８ｍｍの部位）を支点とする円筒基体１の振れ
および軸部２ａの軸振れを計測したところ、円筒基体１
の振れは２〜１５μｍ、軸部２ａの軸振れは２〜１０μ
ｍであった。 （実施例２）本実施例は、上記実施例１と同様のノンマ
グタイプの軸付き現像スリーブの製造方法であって、上
記実施例１のの工程およびの工程と同様の工程によ
りワークＷ1 を作製したのち、該ワークＷ1 を旋盤によ
り切削加工する点が上記実施例１のの工程と異なる。Shaking of the cylindrical base 1 and shaft runout of the shaft 2a of the developing sleeve with shaft manufactured according to the present embodiment with the vicinity of both ends of the cylindrical base 1 (a portion 8 mm closer to the center from both ends of the cylindrical base) as a fulcrum. Was measured, the cylindrical substrate 1
2 to 15 μm, the shaft runout of the shaft portion 2a is 2 to 10 μm
It was m. (Example 2) This example is a method for manufacturing a shafted developing sleeve similar non mug type as in Example 1, of the steps and processes and the work W 1 by the same process described above in Example 1 After manufacturing, the work W 1 is cut by a lathe, which is different from the process of the first embodiment.
【００２１】 先ず、実施例１のの工程と同様に円
筒基体１および軸部材２を作製する。First, the cylindrical substrate 1 and the shaft member 2 are manufactured in the same manner as in the process of the first embodiment.
【００２２】 上記の工程ののち、実施例１のの
工程と同様にワークＷ1 を作製する。After the above steps, the work W 1 is manufactured in the same manner as the steps of the first embodiment.
【００２３】 上記工程によって得たワークＷ1
を、図２の（ａ）に示すように、円筒基体１の両端部近
傍を把持して回転させ、バイト５に矢印方向の送りを与
えて円筒基体１の両端部より突出する軸部２ａを外径８
ｆ９ｍｍに切削する。Workpiece W 1 obtained by the above process
As shown in FIG. 2 (a), the vicinity of both ends of the cylindrical base 1 is gripped and rotated, and the cutting tool 5 is fed in the direction of the arrow so that the shaft 2a protruding from the both ends of the cylindrical base 1 is removed. Outer diameter 8
Cut to f9 mm.
【００２４】 上記工程ののち、図２の（ｂ）に示
すように、軸部２ａを把持して回転させ、バイト５に矢
印方向の送りを与えて円筒基体１の外周面を外径１６±
０．０２ｍｍに切削し、円筒基体１とその両端部より突
出する軸部２ａを有する軸付き現像スリーブを作製す
る。After the above steps, as shown in FIG. 2B, the shaft portion 2a is gripped and rotated, and the bite 5 is fed in the direction of the arrow so that the outer peripheral surface of the cylindrical substrate 1 has an outer diameter of 16 ±.
It is cut to 0.02 mm, and a developing sleeve with a shaft having a cylindrical base 1 and a shaft 2a protruding from both ends thereof is manufactured.
【００２５】本実施例によって作製された軸付き現像ス
リーブの円筒基体１の両端部近傍を支点とする円筒基体
１の振れおよび軸部２ａの軸振れを実施例１と同様に計
測したところ、円筒基体１の振れは２〜１５μｍ、軸部
２ａの軸振れは２〜１０μｍであった。In the same manner as in Example 1, the deflection of the cylindrical substrate 1 and the axial deflection of the shaft portion 2a of the developing sleeve with shaft manufactured by the present embodiment with the vicinity of both ends of the cylindrical substrate 1 as the fulcrum were measured. The shake of the substrate 1 was 2 to 15 μm, and the shake of the shaft portion 2a was 2 to 10 μm.
【００２６】なお、上記実施例１および実施例２のよう
に円筒基体１の両端部にインロー部１ａを形成しておく
と精度が向上するが、必らずしもインロー部１ａを設け
る必要性は無い。The accuracy is improved by forming the spigot portions 1a at both ends of the cylindrical substrate 1 as in the first and second embodiments, but the spigot portions 1a must be provided. There is no.
【００２７】上記実施例１および実施例２によって作製
された軸付き現像スリーブに対し、現像剤を均一にムラ
なく塗布し得るように微細凹凸を形成するため、円筒基
体１の外周面に下記のサンドブラスト処理条件によりサ
ンドブラスト処理を施し、表面粗さＲｚ２．５±０．３
μｍとしたのち、それぞれレーザビームプリンタに組込
み画出しを行なったところ、ゴースト、濃度ムラの無い
高品位画像が得られた。 （実施例３）本実施例は、中実のノンマグタイプの軸付
き現像スリーブの製造方法である。In order to form fine irregularities so that the developer can be applied uniformly and evenly on the shaft-equipped developing sleeves produced in Examples 1 and 2, the following outer peripheral surface of the cylindrical substrate 1 is formed. Sand blasting is applied according to the sand blasting conditions, and the surface roughness Rz2.5 ± 0.3.
After setting the thickness to μm, images were incorporated into the respective laser beam printers, and images were printed. As a result, a high-quality image free of ghost and density unevenness was obtained. (Embodiment 3) This embodiment is a method for manufacturing a solid non-mag type developing sleeve with a shaft.
【００２８】 先ず、図３の（ａ）に示すように外
径：１６．１ｍｍ、長さ３００ｍｍのアルミニウム製丸
棒からなる円柱体１０を作製する。First, as shown in FIG. 3A, a cylindrical body 10 made of an aluminum round bar having an outer diameter of 16.1 mm and a length of 300 mm is manufactured.
【００２９】 上記の工程で得た円柱体１０の軸部
１２ａとなる部分より中央寄り近傍を把持して回転さ
せ、バイト１５に矢印方向の送りを与えて軸部１２ａの
外周面を外径８．０７ｍｍに粗切削することによりワー
クＷ2 を作製する。The columnar body 10 obtained in the above step is gripped and rotated in the vicinity of the center from the portion to be the shaft portion 12a, and the bite 15 is fed in the direction of the arrow so that the outer peripheral surface of the shaft portion 12a has an outer diameter of 8 mm. A work W 2 is produced by rough cutting to 0.07 mm.
【００３０】 上記の工程で得たワークＷ2 を実施
例１と同様の大径部１４ａおよび小径部４ｂを有する砥
石車１４と調整車１３を備えたインフィードセンタレス
研削機により、軸部１２ａの外周面および円柱基体１１
の外周面を同時に研削することにより、ワークＷ2 をそ
の円柱基体１１の外径１６±０．０２ｍｍ、軸部１２ａ
の外径８ｆ９ｍｍに仕上げ、中実の軸付き現像スリーブ
を作製する。The work W 2 obtained in the above process was processed by the infeed centerless grinding machine equipped with the grinding wheel 14 having the large diameter portion 14a and the small diameter portion 4b and the adjusting wheel 13 similar to those of the first embodiment to remove the shaft portion 12a. Outer peripheral surface and cylindrical base 11
By simultaneously grinding the outer peripheral surface of the work piece W 2 , the work W 2 has an outer diameter of the cylindrical base 11 of 16 ± 0.02 mm and a shaft portion 12 a.
To an outer diameter of 8f9 mm to prepare a solid developing sleeve with a shaft.
【００３１】本実施例により作製された軸付き現像スリ
ーブの円柱基体１１の両端部近傍を支点とする円柱基体
１１の振れおよび軸部１２ａの軸振れを実施例１と同様
に計測したところ円柱基体１１の振れは２〜１０μｍ、
軸部１２ａの軸振れは２〜５μｍであった。 （実施例４）本実施例は、実施例３と同様の中実のノン
マグタイプの軸付き現像スリーブの製造方法であって、
上記実施例３のの工程およびの工程と同様の工程に
よりワークＷ2 を作製したのち、該ワークＷ2 を旋盤に
より切削加工する点が上記実施例３のの工程と異な
る。In the same manner as in Example 1, the deflection of the cylindrical substrate 11 and the axial deflection of the shaft portion 12a with the vicinity of both ends of the cylindrical substrate 11 of the developing sleeve with shaft manufactured according to the present embodiment as the fulcrum were measured. The deflection of 11 is 2 to 10 μm,
The shaft runout of the shaft portion 12a was 2 to 5 μm. (Embodiment 4) This embodiment is a method for manufacturing a solid non-mag type developing sleeve with a shaft, which is the same as Embodiment 3.
After producing a workpiece W 2 by the the process and the steps similar the Example 3, except that cutting the workpiece W 2 by lathe is different from the the process described above in Example 3.
【００３２】 先ず、実施例３のの工程と同様に図
４の（ａ）に示す円柱体１０を作製する。First, similarly to the process of Example 3, the columnar body 10 shown in FIG. 4A is manufactured.
【００３３】 上記の工程ののち、実施例３のの
工程と同様に図４の（ｂ）に示すようにワークＷ2 を作
製する。After the above steps, a work W 2 is produced as shown in FIG. 4B in the same manner as the steps of the third embodiment.
【００３４】 上記の工程で得たワークＷ2 を、図
４の（ｃ）に示すように、軸部１２ａを把持して回転さ
せ、バイト１５に矢印方向の送りを与えて円柱基体１１
の外周面を外径１６±０．０２ｍｍに切削し、円柱基体
１１の両端部より突出する軸部１２ａを有する軸付き現
像スリーブを作製する。As shown in FIG. 4C, the work W 2 obtained in the above process is gripped by the shaft portion 12 a and rotated, and the cutting tool 15 is fed in the direction of the arrow to form the cylindrical substrate 11.
The outer peripheral surface is cut to an outer diameter of 16 ± 0.02 mm to produce a shaft-equipped developing sleeve having shaft portions 12a protruding from both ends of the cylindrical base 11.
【００３５】本実施例によって作製された軸付き現像ス
リーブの円柱基体１１の両端部近傍を支点とする円柱基
体１１の振れおよび軸部１２ａの軸振れを実施例１と同
様に計測したところ円柱基体１１の振れは２〜１５μ
ｍ、軸部１２ａの軸振れは２〜１０μｍであった。In the same manner as in Example 1, the deflection of the cylindrical substrate 11 and the axial deflection of the shaft portion 12a with the vicinity of both ends of the cylindrical substrate 11 of the shaft-equipped developing sleeve produced in this example as the fulcrum were measured. The swing of 11 is 2 to 15μ
The shaft runout of the shaft portion 12a was 2 to 10 μm.
【００３６】上記実施例３および実施例４によって作製
された軸付き現像スリーブに対し、円柱基体１１の外周
面に上記実施例１および実施例２と同様のサンドブラス
ト処理条件でサンドブラスト処理を施し、表面粗さＲｚ
２．５±０．３μｍとしたのち、それぞれレーザビーム
プリンタに組み込み画出しを行なったところ、ゴース
ト、濃度ムラのない高品位画像が得られた。 （実施例５）図５は、本実施例のマグネットタイプの軸
付き現像スリーブの製造方法によって作製された軸付き
現像スリーブの模式断面図である。With respect to the shaft-equipped developing sleeves produced in Examples 3 and 4, the outer peripheral surface of the cylindrical substrate 11 was sandblasted under the same sandblasting conditions as in Examples 1 and 2 to obtain the surface. Roughness Rz
After setting to 2.5 ± 0.3 μm, each image was incorporated into a laser beam printer and image formation was performed. As a result, a high-quality image free of ghost and density unevenness was obtained. (Embodiment 5) FIG. 5 is a schematic cross-sectional view of a shaft-equipped developing sleeve manufactured by the method of manufacturing a magnet type shaft-development sleeve of this embodiment.
【００３７】図５に示すように、本実施例の軸付き現像
スリーブＥ1 は、円筒基体２１と、該円筒基体２１内に
嵌挿された両端に軸２５を持つマグネットロール２４
と、円筒基体２１の両端に固着された軸部材２２を備
え、該軸部材２２は円筒基体２１に圧入される嵌合部２
２ｂおよび円筒基体２１の両端より突出する軸部２２ａ
を有し、その貫通孔２２ｃを貫通して前記マグネットロ
ール２４の軸２５が外方へ突出したものであって、円筒
基体２１の両端部近傍を支点とする円筒基体の振れおよ
び軸部の軸振れが各々２０μｍ以下であり、円筒基体２
１の外周面には表面平均粗さＲａが１．５〜３．５μｍ
の範囲内である導電性微粒子が分散された結着樹脂から
なる表面層である導電性コート層２１ａが形成されてい
る。As shown in FIG. 5, the shaft-equipped developing sleeve E 1 of the present embodiment has a cylindrical base 21 and a magnet roll 24 having shafts 25 at both ends fitted and inserted into the cylindrical base 21.
And a shaft member 22 fixed to both ends of the cylindrical base member 21, and the shaft member 22 is press-fitted into the cylindrical base member 21.
2b and a shaft portion 22a protruding from both ends of the cylindrical base 21.
The shaft 25 of the magnet roll 24 protrudes outward through the through hole 22c, and the shaft of the shaft and the swing of the cylindrical base body with the vicinity of both ends of the cylindrical base body 21 as a fulcrum. The deflection is 20 μm or less, and the cylindrical substrate 2
The outer peripheral surface of No. 1 has a surface average roughness Ra of 1.5 to 3.5 μm.
The conductive coat layer 21a, which is a surface layer made of a binder resin in which the conductive fine particles are dispersed, is formed.
【００３８】次に、本実施例の軸付き現像スリーブの製
造方法の工程について説明する。Next, the steps of the method for manufacturing the shaft-equipped developing sleeve of this embodiment will be described.
【００３９】 先ず、図５に示すような外径：２０．
１ｍｍ、内径：１８．４Ｈ８ｍｍ、長さ３３３ｍｍのア
ルミニウム製パイプからなる円筒基体２１と、アルミニ
ウム製の外径：１８．４１±０．００５ｍｍ、長さ：８
ｍｍの嵌合部２２ｂ、外径：１２．０７ｍｍ、長さ：１
５ｍｍ、貫通孔２２ｃの内径８ｍｍの軸部２２ａを持つ
軸部材２２を作製する。First, the outer diameter as shown in FIG.
1 mm, inner diameter: 18.4H8 mm, length 333 mm, a cylindrical base body 21 made of aluminum pipe, and aluminum outer diameter: 18.41 ± 0.005 mm, length: 8
mm fitting part 22b, outer diameter: 12.07 mm, length: 1
A shaft member 22 having a shaft portion 22a of 5 mm and an inner diameter of 8 mm of the through hole 22c is manufactured.
【００４０】 上記の工程で得た円筒基体２１の一
端に、図６に示すように、上記の工程で得た軸部材２
２の嵌合部２２ｂを圧入して固着し、ワークＷ3 を作成
する。As shown in FIG. 6, the shaft member 2 obtained in the above process is attached to one end of the cylindrical substrate 21 obtained in the above process.
The second fitting portion 22b fixed by press-fitting, to create a work W 3.
【００４１】 上記の工程で得たワークＷ3 をイン
フィードセンタレス研削機により前記円筒基体２１の外
周面と前記軸部材２２の軸部２２ａの外周面とを同時に
研削することにより円筒基体２１の外径を２０±０．０
２ｍｍ、軸部２２ａの外径を１２ｆ８ｍｍに仕上げる。The work W 3 obtained in the above process is ground by an in-feed centerless grinding machine to simultaneously grind the outer peripheral surface of the cylindrical base body 21 and the outer peripheral surface of the shaft portion 22 a of the shaft member 22 to the outside of the cylindrical base body 21. Diameter 20 ± 0.0
2 mm and the outer diameter of the shaft portion 22a is finished to 12 f8 mm.
【００４２】 上記の工程ののち、円筒基体２１の
外周面に現像剤を均一にムラなく塗布し得るための微細
凹凸をつけるため、下記の条件でのサンドブラスト処理
を施す。 （サンドブラスト処理条件） 砥粒：昭和電工社製 アランダム＃１００ ノズル径：７ｍｍ ノズル距離：２００ｍｍ エアー圧力：１．０〜４．５ｋｇｆ／ｃｍ2 ワーク回転数：２０ｒｐｍ ブラスト時間：６０ｓｅｃ 上記の工程ののち、円筒基体２１のサンドブラス
ト処理した外周面に、プリントパターンの履歴であるス
リーブゴーストを除去あるいは軽減するための下記処方
の塗工液をスプレー塗布したのち、１５０℃で２０分間
加熱して硬化させ、膜厚：１０μｍ、表面粗さ：Ｒａ
０．８〜４．３μｍの範囲内である導電性コート層２１
ａを形成する。 （塗工液の処方） カーボン粒子：１重量部 グラファイト粒子：９重量部 フェノール樹脂：２０重量部 イソプロピルアルコール：２０重量部 上記の工程ののち、円筒基体２１内にマグネット
ロール２４を嵌挿し、他端に軸部材２２を圧入して固着
し、円筒基体２１の両端より突出する軸部２２ａを持つ
ワークＷ4 を作製する。After the above steps, in order to form fine irregularities on the outer peripheral surface of the cylindrical substrate 21 so that the developer can be applied uniformly and evenly, a sandblast treatment is performed under the following conditions. (Sandblasting condition) Abrasive grain: Showa Denko Alundum # 100 Nozzle diameter: 7 mm Nozzle distance: 200 mm Air pressure: 1.0 to 4.5 kgf / cm 2 Work speed: 20 rpm Blasting time: 60 sec After that, the sandblasted outer peripheral surface of the cylindrical substrate 21 is spray-coated with a coating solution having the following formulation for removing or reducing the sleeve ghost, which is the history of the print pattern, and then heated at 150 ° C. for 20 minutes to be cured. , Film thickness: 10 μm, surface roughness: Ra
Conductive coat layer 21 in the range of 0.8 to 4.3 μm
a is formed. (Prescription of coating liquid) Carbon particles: 1 part by weight Graphite particles: 9 parts by weight Phenolic resin: 20 parts by weight Isopropyl alcohol: 20 parts by weight After the above steps, the magnet roll 24 is inserted into the cylindrical substrate 21 and the like. A shaft member 22 is press-fitted and fixed to the end, and a work W 4 having a shaft portion 22a protruding from both ends of the cylindrical substrate 21 is produced.
【００４３】 上記の工程によって得られたワーク
Ｗ4 を、図７に示すように、両端加工機の保持治具３４
の受け台３５，３５により固定し、直動スライダ３１を
カッタ軸３２に向けて移動させ、回転するカッタ付きホ
ルダ３３に支持されたカッタ３３ａにより、円筒基体２
１の他端より突出する軸部２２ａの外周面を切削加工
し、外径１２ｆ８ｍｍに仕上げ軸付き現像スリーブＥ1
を作製する。As shown in FIG. 7, the work W 4 obtained in the above process is held by the holding jig 34 of the double-end processing machine.
The linear base 2 is fixed by the receiving bases 35, 35 of the cylindrical base 2 by the cutter 33a supported by the cutter holder 33 that rotates by moving the linear motion slider 31 toward the cutter shaft 32.
The outer peripheral surface of the shaft portion 22a protruding from the other end of 1 is machined to have an outer diameter of 12f8 mm and a developing sleeve E 1 with a finishing shaft.
Is prepared.
【００４４】このように、本切削加工においてはマグネ
ットロール２４を嵌挿したワークＷ4 を回転させないの
で、マグネットロール２４は加工中回転や移動すること
なく静止しているため、切削加工中に損傷するおそれが
ない。As described above, since the work W 4 into which the magnet roll 24 is inserted is not rotated in the main cutting process, the magnet roll 24 is stationary without rotating or moving during the process, and therefore is not damaged during the cutting process. There is no danger of
【００４５】本実施例によって作製された軸付き現像ス
リーブＥ1 の円筒基体２１の両端部近傍を支点とする円
筒基体２１の振れおよび軸部２２ａの軸振れを上記実施
例１と同様に計測したところ、各々２〜１０μｍ以下で
あった。The runout of the cylindrical substrate 21 and the runout of the shaft portion 22a with the vicinity of both ends of the cylindrical substrate 21 of the shaft-equipped developing sleeve E 1 manufactured according to this embodiment as the fulcrum were measured in the same manner as in the first embodiment. However, each was 2 to 10 μm or less.
【００４６】本実施例と同様に作製された表面粗さＲａ
の異なる各軸付き現像スリーブをそれぞれレーザビーム
プリンタに組み込んで画出しを行なった結果を表１に示
す。Surface roughness Ra produced in the same manner as this embodiment
Table 1 shows the results of image development by incorporating the developing sleeves with different axes in the respective laser beam printers.
【００４７】[0047]
【表１】 ◎：特に優れている ○：優れている △：やや悪い 上記の結果から、ブラスト後Ｒａは１．０〜３．０μ
ｍ、塗工後Ｒａは１．５〜３．５μｍの範囲が良好であ
った。 （比較例）比較例として、ブラスト後Ｒａ２．０μｍ、
導電コート層の塗工後Ｒａ２．５μｍであって、円筒基
体の振れおよび軸部の軸振れの悪い軸付き現像スリーブ
を作製して実施例５と同様の画像評価を行なった。その
結果を表２に示す。[Table 1] ⊚: Particularly excellent O: Excellent Δ: Slightly bad From the above results, Ra after blasting is 1.0 to 3.0 μm.
m, Ra after coating was preferably in the range of 1.5 to 3.5 μm. (Comparative Example) As a comparative example, Ra 2.0 μm after blasting,
A developing sleeve with a shaft having Ra of 2.5 μm after coating of the conductive coat layer and having poor runout of the cylindrical substrate and bad runout of the shaft was prepared, and the same image evaluation as in Example 5 was performed. The results are shown in Table 2.
【００４８】[0048]
【表２】 △：やや悪い ×：悪い ××：特に悪い 表２から明らかなように、円筒基体の振れと軸部の軸振
れが大きくなるにしたがい画質の品位が低下していく。[Table 2] B: Slightly bad X: Bad XX: Especially bad As is clear from Table 2, the quality of the image quality deteriorates as the shake of the cylindrical substrate and the shake of the shaft portion increase.
【００４９】上記各実施例において、金属製の円柱基体
または円筒基体は、アルミニウム製としたが、これに限
らずアルミニウム合金や非磁性ステンレス鋼を用いるこ
とができる。In each of the above-mentioned embodiments, the metal cylindrical base body or the cylindrical base body is made of aluminum, but not limited to this, aluminum alloy or non-magnetic stainless steel can be used.
【００５０】[0050]
【発明の効果】本発明は、上述のとおり構成されている
ので、次に記載するような効果を奏する。Since the present invention is configured as described above, it has the following effects.
【００５１】円筒基体または円柱基体の振れおよび軸部
の軸振れが各々２０μｍ以下であるため、電子写真感光
体と軸付き現像スリーブとの間のギャップが軸方向全体
にわたって均一になる。その結果、ゴースト、濃度ムラ
の無い高品位な画像が得られる。Since the deflection of the cylindrical substrate or the cylindrical substrate and the axial deflection of the shaft portion are each 20 μm or less, the gap between the electrophotographic photosensitive member and the developing sleeve with a shaft is uniform over the entire axial direction. As a result, a high-quality image free of ghost and density unevenness can be obtained.
【図１】実施例１の軸付き現像スリーブの製造方法の工
程を示す説明図である。FIG. 1 is an explanatory diagram showing a step of a manufacturing method of a developing sleeve with a shaft according to a first embodiment.
【図２】実施例２の軸付き現像スリーブの製造方法の工
程を示す説明図である。FIG. 2 is an explanatory diagram showing steps of a method for manufacturing a shaft-equipped developing sleeve according to a second embodiment.
【図３】実施例３の軸付き現像スリーブの製造方法の工
程を示す説明図である。FIG. 3 is an explanatory diagram showing steps of a method of manufacturing a developing sleeve with a shaft according to a third embodiment.
【図４】実施例４の軸付き現像スリーブの製造方法の工
程を示す説明図である。FIG. 4 is an explanatory view showing the steps of the manufacturing method for the developing sleeve with shaft according to the fourth embodiment.
【図５】実施例５の軸付き現像スリーブの製造方法によ
って作製された軸付き現像スリーブの模式断面図であ
る。FIG. 5 is a schematic cross-sectional view of a shaft-equipped developing sleeve manufactured by the method for manufacturing a shaft-developing sleeve according to the fifth embodiment.
【図６】実施例５の軸付き現像スリーブの製造方法の一
工程を示す説明図である。FIG. 6 is an explanatory diagram showing a step of a method of manufacturing the developing sleeve with a shaft according to the fifth embodiment.
【図７】実施例５の軸付き現像スリーブの製造方法の一
工程を示す説明図である。FIG. 7 is an explanatory diagram showing a step of a method for manufacturing the developing sleeve with a shaft according to the fifth embodiment.
【図８】従来の電子写真方式の画像形成装置の説明図で
ある。FIG. 8 is an explanatory diagram of a conventional electrophotographic image forming apparatus.
１，２１ 円筒基体 １ａ インロー部 ２，２２ 軸部材 ２ａ，１２ａ，２２ａ 軸部 ２ｂ，２２ｂ 嵌合部 ３，１３ 調整車 ４，１４ 砥石車 ４ａ，１４ａ 大径部 ４ｂ，１４ｂ 小径部 ５，１５ バイト １０ 円柱体 １１ 円柱基体 ２２ｃ 貫通孔 ２４ マグネットロール ２５ 軸 ３０ テーブル ３１ 直動スライダ ３２ カッタ軸 ３３ カッタ付きホルダ ３３ａ カッタ ３４ 保持治具 ３５ 受け台 1,21 Cylindrical base 1a Inlay part 2,22 Shaft members 2a, 12a, 22a Shaft parts 2b, 22b Fitting part 3,13 Adjusting wheel 4,14 Grinding wheel 4a, 14a Large diameter part 4b, 14b Small diameter part 5,15 Tool 10 Cylindrical body 11 Cylindrical base 22c Through hole 24 Magnet roll 25 Shaft 30 Table 31 Direct-acting slider 32 Cutter shaft 33 Cutter holder 33a Cutter 34 Holding jig 35 Cradle
───────────────────────────────────────────────────── フロントページの続き (72)発明者 山田 祐介 東京都大田区下丸子３丁目30番２号 キヤ ノン株式会社内 ─────────────────────────────────────────────────── ─── Continued Front Page (72) Inventor Yusuke Yamada 3-30-2 Shimomaruko, Ota-ku, Tokyo Canon Inc.
Claims (9)
付き現像スリーブであって、 金属製の円柱基体と、該円柱基体の両端部より突出する
軸部を備え、前記円柱基体の両端部近傍を支点とした前
記円柱基体の振れおよび前記軸部の軸振れが各々２０μ
ｍ以下であることを特徴とする軸付き現像スリーブ。1. A developing sleeve with a shaft for use in an electrophotographic image forming apparatus, comprising: a metallic cylindrical base body; and shaft portions projecting from both ends of the cylindrical base body, in the vicinity of both end portions of the cylindrical base body. And the shaft runout of the shaft part is 20 μ
A developing sleeve with a shaft, characterized in that it is m or less.
付き現像スリーブであって、 金属製の円筒基体と、該円筒基体の両端部に固着された
軸部材を備え、該軸部材は前記円筒基体の両端部より突
出する軸部を有し、前記円筒基体の両端部近傍を支点と
した前記円筒基体の振れおよび前記軸部の軸振れが各々
２０μｍ以下であることを特徴とする軸付き現像スリー
ブ。2. A developing sleeve with a shaft used in an electrophotographic image forming apparatus, comprising a metallic cylindrical base body and shaft members fixed to both ends of the cylindrical base body, wherein the shaft member is the cylinder. Development with a shaft, which has shaft portions projecting from both ends of the base body, and the runout of the cylindrical base body and the shaft runout of the shaft portions each having a fulcrum near both ends of the base body are 20 μm or less. sleeve.
し、前記円筒基体の外周面には平均表面粗さＲａが１．
５〜３．５μｍの範囲内である導電性粒子が分散された
結着樹脂からなる表面層を形成したことを特徴とする請
求項２記載の軸付き現像スリーブ。3. A magnet roller is fitted into the cylindrical base body, and the outer peripheral surface of the cylindrical base body has an average surface roughness Ra of 1.
The shaft-equipped developing sleeve according to claim 2, wherein a surface layer made of a binder resin in which conductive particles having a size within a range of 5 to 3.5 μm are dispersed is formed.
ファイト粒子であることを特徴とする請求項３記載の軸
付き現像スリーブ。4. The shafted developing sleeve according to claim 3, wherein the conductive particles are carbon particles and graphite particles.
付き現像スリーブの製造方法であって、 金属製の円柱体の両端部を切削することにより円柱基体
およびその両端より突出する軸部を有するワークを作製
し、ついで前記ワークをインフィードセンタレス研削機
により前記円柱基体および前記軸部の外周面を同時に研
削することにより、前記円柱基体の両端部近傍を支点と
する前記円柱基体の振れおよび前記軸部の軸振れが各々
２０μｍ以下に仕上げることを特徴とする軸付き現像ス
リーブの製造方法。5. A method of manufacturing a developing sleeve with a shaft for use in an electrophotographic image forming apparatus, comprising a cylindrical base body and a shaft portion protruding from both ends thereof by cutting both end portions of a metal cylindrical body. A work is produced, and then the work is ground by an in-feed centerless grinder at the same time to grind the outer peripheral surfaces of the cylindrical base body and the shaft portion, thereby swinging the cylindrical base body with the vicinity of both ends of the cylindrical base body as fulcrums and A method for manufacturing a developing sleeve with a shaft, characterized in that the shaft runout of the shaft portion is finished to 20 μm or less.
付き現像スリーブの製造方法であって、 金属製の円柱体の中央部寄りの部位を把持してその両端
部を切削することにより円柱基体およびその両端より突
出する軸部を有するワークを作製し、ついで前記ワーク
の前記軸部を把持して前記ワークの円柱基体の外周面を
切削することにより、前記円柱基体の両端部近傍を支点
とする前記円柱基体の振れおよび前記軸部の軸振れが各
々２０μｍ以下に仕上げることを特徴とする軸付き現像
スリーブの製造方法。6. A method for manufacturing a shaft-equipped developing sleeve used in an electrophotographic image forming apparatus, wherein a cylindrical base body is formed by gripping a central portion of a cylindrical body and cutting both ends thereof. And a work having a shaft portion projecting from both ends thereof is produced, and then by gripping the shaft portion of the work and cutting the outer peripheral surface of the cylindrical base of the work, the vicinity of both end portions of the cylindrical base is used as a fulcrum. A method for manufacturing a developing sleeve with a shaft, characterized in that the runout of the cylindrical substrate and the runout of the shaft portion are each finished to 20 μm or less.
付き現像スリーブの製造方法であって、 金属製の円筒基体の両端部に軸部を有する軸部材を固着
して円筒基体の両端部より突出する軸部を持つワークを
作製し、ついで前記ワークをインフィードセンタレス研
削機により前記円筒基体および前記軸部の外周面を同時
に研削することにより、前記円筒基体の両端部近傍を支
点とする前記円筒基体の振れおよび前記軸部の軸振れが
各々２０μｍ以下に仕上げることを特徴とする軸付き現
像スリーブの製造方法。7. A method for manufacturing a developing sleeve with a shaft used in an electrophotographic image forming apparatus, comprising: fixing a shaft member having a shaft portion to both end portions of a metallic cylindrical base body; A workpiece having a protruding shaft portion is produced, and then the workpiece is ground by an in-feed centerless grinding machine at the same time on the outer peripheral surfaces of the cylindrical base body and the shaft portion, so that the vicinity of both ends of the cylindrical base body is used as a fulcrum. A method of manufacturing a developing sleeve with a shaft, characterized in that the runout of the cylindrical substrate and the runout of the shaft portion are each finished to 20 μm or less.
グネットタイプの軸付き現像スリーブの製造方法であっ
て、 金属製の円筒基体の一端に軸部を有する軸部材を固着す
ることにより円筒基体の一端より突出する軸部を有する
ワークを作製し、前記ワークをインフィードセンタレス
研削機により前記円筒基体および前記円筒基体の一端よ
り突出する軸部の外周面を同時に研削したのち、前記円
筒基体の外周面に導電性粒子が分散された結着樹脂から
なる平均表面粗さＲａが１．５〜３．５μｍの範囲内で
ある表面層を形成し、ついで前記円筒基体内にマグネッ
トロールを嵌挿したのち前記円筒基体の他端に軸部を有
する軸部材を固着し、これを端部加工機の保持部材によ
り保持固定して前記円筒基体の他端より突出する軸部を
該軸部の囲りを回動するカッタで切削し、前記円筒基体
の両端部を支点とする前記円筒基体の振れおよび前記軸
部の軸振れが各々２０μｍ以下に仕上げることを特徴と
する軸付き現像スリーブの製造方法。8. A method of manufacturing a magnet-type developing sleeve with a shaft for use in an electrophotographic image forming apparatus, comprising: fixing a shaft member having a shaft portion to one end of a metal cylindrical base member to form a cylindrical base member. After making a work having a shaft portion projecting from one end, and simultaneously grinding the work with an in-feed centerless grinder, the cylindrical substrate and the outer peripheral surface of the shaft portion projecting from one end of the cylindrical substrate are simultaneously ground, and then the outer periphery of the cylindrical substrate. A surface layer having an average surface roughness Ra of 1.5 to 3.5 μm made of a binder resin in which conductive particles are dispersed is formed on the surface, and then a magnet roll is fitted into the cylindrical substrate. After that, a shaft member having a shaft portion is fixed to the other end of the cylindrical base body, and the shaft member protruding from the other end of the cylindrical base body is surrounded by the shaft member which is held and fixed by a holding member of an end processing machine. To A method for manufacturing a developing sleeve with a shaft, characterized by cutting with a rotating cutter and finishing the runout of the cylindrical base body and the shaft runout of the shaft portion with both ends of the cylindrical base body as fulcrums to 20 μm or less.
ファイト粒子であることを特徴とする請求項８記載の軸
付き現像スリーブの製造方法。9. The method for producing a shafted developing sleeve according to claim 8, wherein the conductive particles are carbon particles and graphite particles.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP23845794A JPH0874839A (en) | 1994-09-06 | 1994-09-06 | Development sleeve with shaft and its manufacture |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP23845794A JPH0874839A (en) | 1994-09-06 | 1994-09-06 | Development sleeve with shaft and its manufacture |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0874839A true JPH0874839A (en) | 1996-03-19 |
Family
ID=17030516
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP23845794A Pending JPH0874839A (en) | 1994-09-06 | 1994-09-06 | Development sleeve with shaft and its manufacture |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0874839A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7450892B2 (en) | 2003-10-09 | 2008-11-11 | Fuji Electric Imaging Device Co., Ltd. | Electrophotograph developing roller and image forming device using the same |
| JP2008287152A (en) * | 2007-05-21 | 2008-11-27 | Bridgestone Corp | Conductive roller |
| JP2021091962A (en) * | 2019-12-10 | 2021-06-17 | エスケー ネクシリス カンパニー リミテッド | Cathode assembly for plating equipment |
-
1994
- 1994-09-06 JP JP23845794A patent/JPH0874839A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7450892B2 (en) | 2003-10-09 | 2008-11-11 | Fuji Electric Imaging Device Co., Ltd. | Electrophotograph developing roller and image forming device using the same |
| JP2008287152A (en) * | 2007-05-21 | 2008-11-27 | Bridgestone Corp | Conductive roller |
| JP2021091962A (en) * | 2019-12-10 | 2021-06-17 | エスケー ネクシリス カンパニー リミテッド | Cathode assembly for plating equipment |
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