JP3502921B2 - Developing roller and manufacturing method thereof - Google Patents
Developing roller and manufacturing method thereofInfo
- Publication number
- JP3502921B2 JP3502921B2 JP30925199A JP30925199A JP3502921B2 JP 3502921 B2 JP3502921 B2 JP 3502921B2 JP 30925199 A JP30925199 A JP 30925199A JP 30925199 A JP30925199 A JP 30925199A JP 3502921 B2 JP3502921 B2 JP 3502921B2
- Authority
- JP
- Japan
- Prior art keywords
- nickel plating
- plating layer
- sleeve
- developing roller
- peripheral surface
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Landscapes
- Dry Development In Electrophotography (AREA)
- Rolls And Other Rotary Bodies (AREA)
- Electroplating Methods And Accessories (AREA)
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、静電式複写機等に
用いる電子写真方式の現像用ローラー及びその製造方法
に係り、とくにゴースト画像の発生防止を図った現像ロ
ーラー及びその製造方法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electrophotographic developing roller used in an electrostatic copying machine or the like and a method for manufacturing the same, and more particularly to a developing roller for preventing ghost images from occurring and a method for manufacturing the same.
【０００２】[0002]
【従来の技術】光導電現象を利用して感光体上に静電潜
像を形成し、さらに着色したトナーを静電力で静電潜像
に付着させて可視像とする電子写真技術を利用した複写
機や印刷機では、静電潜像にトナーを付着させる手段と
して、現像ローラーが用いられる。この現像ローラー
は、内部に磁界発生手段を有する軸と非磁性円筒状のス
リーブから構成される。2. Description of the Related Art An electrophotographic technique is used in which a photoconductive phenomenon is used to form an electrostatic latent image on a photoconductor, and colored toner is attached to the electrostatic latent image by electrostatic force to form a visible image. In the copying machine and the printing machine described above, a developing roller is used as a means for attaching toner to the electrostatic latent image. This developing roller is composed of a shaft having a magnetic field generating means inside and a non-magnetic cylindrical sleeve.
【０００３】このような現像方法においては、感光体上
の静電潜像へのトナーの供給量は本来帯電された量に応
じて行われる必要があるが粒径の小さいトナーや帯電し
やすいトナー及び低湿度等の環境下においてはスリーブ
上のトナーに現像履歴により帯電量の分布が発生して所
定のトナー量が供給できない場合が発生する。この現象
はゴーストと呼ばれる。In such a developing method, the amount of toner to be supplied to the electrostatic latent image on the photosensitive member needs to be adjusted in accordance with the originally charged amount, but toner having a small particle size or toner that is easily charged is required. In an environment such as low humidity, the toner on the sleeve may have a distribution of charge amount due to the development history and a predetermined toner amount may not be supplied. This phenomenon is called ghost.
【０００４】従来公知の現像ローラーとしては特開昭５
８−１３２７６８号公報に記載されているものがあり、
アルミニウム合金材のスリーブの表面に無電解ニッケル
メッキ処理を施した構成となっている。その他に、アル
ミニウム合金材のスリーブにアルマイト処理、クロメー
ト処理等を施す構成も知られている。As a conventionally known developing roller, Japanese Unexamined Patent Publication No. Sho.
There is one described in Japanese Patent Publication No. 8-132768,
The surface of the aluminum alloy sleeve is electroless nickel plated. In addition, a configuration is known in which a sleeve made of an aluminum alloy material is subjected to alumite treatment, chromate treatment, or the like.
【０００５】[0005]
【発明が解決しようとする課題】近年、複写機や印刷機
においては高画質化が進みそれに伴いトナーの小粒子化
が進んでいる。ところでスリーブの表面処理においては
これまでもアルマイト処理、無電解ニッケルメッキ処理
等が行われてきたが耐摩耗性の向上は見られるがゴース
ト画像についての改善はみられなかった。また、クロメ
ート処理についても同じであった。その他として導電性
粒子を含有した樹脂層をスリーブ表面に施す方法も知ら
れているが、本発明はメッキ処理でゴースト画像改善を
行うことにより、安価にかつ多量に処理を行うことが可
能になった。In recent years, in copying machines and printing machines, the image quality has been improved and the toner particles have been reduced accordingly. By the way, in the surface treatment of the sleeve, alumite treatment, electroless nickel plating treatment and the like have been performed so far, but the abrasion resistance is improved but the ghost image is not improved. The same applies to the chromate treatment. As another method, a method of applying a resin layer containing conductive particles to the surface of the sleeve is known, but the present invention makes it possible to perform a large amount of processing inexpensively by improving the ghost image by plating. It was
【０００６】本発明は、上記の点に鑑み、ゴースト画像
の発生を抑制できる現像ローラー及びその製造方法を提
供することを目的とする。In view of the above points, it is an object of the present invention to provide a developing roller capable of suppressing the generation of ghost images and a manufacturing method thereof.
【０００７】本発明のその他の目的や新規な特徴は後述
の実施の形態において明らかにする。Other objects and novel features of the present invention will be clarified in the embodiments described later.
【０００８】[0008]
【課題を解決するための手段】上記目的を達成するため
に、第１の発明の現像ローラーは、アルミニウム合金材
のスリーブの外周表面に直接、リン含有量１％以下で厚
み０．３〜６ミクロンの電解ニッケルメッキ層を形成
し、該電解ニッケルメッキ層が最外周表面となった非磁
性スリーブを構成したことを特徴としている。In order to achieve the above object, the developing roller of the first invention is such that the phosphorus content is 1% or less and the thickness is directly on the outer peripheral surface of the sleeve made of an aluminum alloy material.
Only 0.3 ~ 6 micron electrolytic nickel plating layer is formed
And the electrolytic nickel plating layer was the outermost surface
It is characterized by the construction of a sex sleeve .
【０００９】また、第２の発明の現像ローラーは、アル
ミニウム合金材のスリーブの外周表面に無電解ニッケル
メッキ層を形成し、その上に前記無電解ニッケルメッキ
層よりも電気抵抗の低い電解ニッケルメッキ層を形成
し、該電解ニッケルメッキ層が最外周表面となった非磁
性スリーブを構成したことを特徴としている。 第３の発
明の現像ローラーは、アルミニウム合金材のスリーブの
外周表面に無電解ニッケルメッキ層を形成し、その上に
電解銅メッキ層を形成し、さらにその上に前記無電解ニ
ッケルメッキ層よりも電気抵抗の低い電解ニッケルメッ
キ層を形成し、該電解ニッケルメッキ層が最外周表面と
なった非磁性スリーブを構成したことを特徴としてい
る。 Further , the developing roller of the second invention is
The electroless nickel plating layer formed on the outer peripheral surface of the sleeve of Miniumu alloy material, the electroless nickel plating thereon
Electrolytic nickel plating layer with lower electric resistance than the layer
And the electrolytic nickel plating layer was the outermost surface
It is characterized by the construction of a sex sleeve. Third departure
The light developing roller is made of an aluminum alloy sleeve.
An electroless nickel plating layer is formed on the outer peripheral surface, and on top of that
An electrolytic copper plating layer is formed, and the electroless Ni layer is further formed on the electrolytic copper plating layer.
Electrolytic nickel plating with lower electrical resistance than the nickel plating layer
And a electrolytic nickel plating layer is formed on the outermost peripheral surface.
It is characterized by configuring a non-magnetic sleeve
It
【００１０】本発明の現像ローラーの製造方法は、アル
ミニウム合金材のスリーブの外周表面に無電解ニッケル
メッキ処理で無電解ニッケルメッキ層を形成してから電
解ニッケルメッキ処理で前記無電解ニッケルメッキ層よ
りも電気抵抗の低い電解ニッケルメッキ層を形成し、そ
の後、密着性改善のための加熱処理を１００〜１５０℃
で行うことを特徴としている。In the method of manufacturing a developing roller of the present invention, an electroless nickel plating layer is formed on the outer peripheral surface of a sleeve made of an aluminum alloy material by electroless nickel plating, and then the electroless nickel plating layer is formed by electrolytic nickel plating.
An electrolytic nickel plating layer with a low electrical resistance is formed, and then heat treatment for improving adhesion is performed at 100 to 150 ° C.
It is characterized by performing at.
【００１１】[0011]
【発明の実施の形態】以下、本発明に係る現像ローラー
及びその製造方法の実施の形態を図面に従って説明す
る。BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of a developing roller and a method of manufacturing the same according to the present invention will be described below with reference to the drawings.
【００１２】図１は本発明の実施の形態であって現像ロ
ーラーを示し、図２は現像ローラーを具備した現像装置
の全体構成を示す。FIG. 1 shows a developing roller according to an embodiment of the present invention, and FIG. 2 shows the entire structure of a developing device equipped with the developing roller.
【００１３】これらの図において、１は現像ローラー
で、非磁性スリーブ２及び永久磁石部材３を有し、永久
磁石部材３はシャフト４に固着されていて、シャフト４
の両端は非磁性スリーブ２の両端部に装着されたフラン
ジ５で軸支されている。In these figures, 1 is a developing roller, which has a non-magnetic sleeve 2 and a permanent magnet member 3, and the permanent magnet member 3 is fixed to a shaft 4,
Both ends of are supported by flanges 5 attached to both ends of the non-magnetic sleeve 2.
【００１４】この現像ローラー１は図２のようにトナー
１１を収納したトナー容器１０に回転可能なように取り
付けてある。２０は静電式複写機等の感光体ドラムであ
る。The developing roller 1 is rotatably attached to a toner container 10 containing toner 11 as shown in FIG. Reference numeral 20 is a photosensitive drum of an electrostatic copying machine or the like.
【００１５】図１に拡大して示すように、非磁性スリー
ブ２はアルミニウム合金材のスリーブ３０の外周表面に
無電解ニッケルメッキ処理で無電解ニッケルメッキ層３
１（リン含有率１〜１５％で厚み１〜６ミクロン）を形
成してから電解ニッケルメッキ処理で、前記メッキ層３
１よりも電気抵抗の十分低い電解ニッケルメッキ層３２
（リン含有率１％以下で厚み０．３〜３ミクロン）を形
成したものである。その後、密着性改善のための加熱処
理（１００〜１５０℃で３０分〜２時間）を行う。As shown in the enlarged view of FIG. 1, the non-magnetic sleeve 2 has an electroless nickel plating layer 3 formed on the outer peripheral surface of an aluminum alloy sleeve 30 by electroless nickel plating.
1 (phosphorus content of 1 to 15% and thickness of 1 to 6 μm) is formed, and then electrolytic nickel plating is performed to form the plating layer 3
Electrolytic nickel plating layer 32 having electric resistance sufficiently lower than 1
(Phosphorus content is 1% or less and thickness is 0.3 to 3 microns). After that, heat treatment (30 minutes to 2 hours at 100 to 150 ° C.) for improving adhesion is performed.
【００１６】この実施の形態によれば、次の通りの効果
を得ることができる。According to this embodiment, the following effects can be obtained.
【００１７】(1) 非磁性スリーブ２はアルミニウム合
金材のスリーブ３０の最外周表面に電気抵抗の十分低い
電解ニッケルメッキ層３２を形成したものであるため、
トナー帯電量の分布を少なくすることができる。これに
より、ゴースト画像発生を抑制することができる。トナ
ー帯電量の分布が大きいと、前回の静電画像がスリーブ
上に残り、ゴースト画像発生の原因となる。(1) Since the non-magnetic sleeve 2 is formed by forming the electrolytic nickel plating layer 32 having a sufficiently low electric resistance on the outermost peripheral surface of the sleeve 30 made of an aluminum alloy material.
It is possible to reduce the distribution of the toner charge amount. As a result, it is possible to suppress the generation of ghost images. If the distribution of the toner charge amount is large, the previous electrostatic image remains on the sleeve, causing a ghost image.
【００１８】(2) アルミニウム合金材のスリーブ３０
の外周表面に無電解ニッケルメッキ処理で無電解ニッケ
ルメッキ層３１を形成してから電解ニッケルメッキ処理
で電気抵抗の低い電解ニッケルメッキ層３２を形成し、
その後、密着性改善のための加熱処理を行うことで、ア
ルミニウム合金材のスリーブ３０に対するメッキ層３
１，３２の付着強度を高め、信頼性を向上させることが
できる。(2) Aluminum alloy sleeve 30
An electroless nickel plating layer 31 is formed on the outer peripheral surface of the electroless nickel plating layer, and then an electrolytic nickel plating layer 32 having a low electric resistance is formed by electrolytic nickel plating.
After that, a heat treatment for improving adhesion is performed, so that the plating layer 3 for the sleeve 30 of the aluminum alloy material is formed.
It is possible to increase the adhesion strength of 1, 32 and improve the reliability.
【００１９】なお、上記実施の形態では、アルミニウム
合金材のスリーブ３０上に無電解ニッケルメッキ層３１
を形成してから電解ニッケルメッキ層３２を形成した
が、アルミニウム合金材のスリーブ３０の外周表面に直
接電解ニッケルメッキ処理で電気抵抗の低い電解ニッケ
ルメッキ層３２（リン含有率１％以下で厚み０．３〜６
ミクロン）を形成してもよい。リン含有率を低くするこ
とで、電気抵抗を低くすることができる。In the above embodiment, the electroless nickel plating layer 31 is formed on the sleeve 30 made of an aluminum alloy material.
Although the electrolytic nickel plating layer 32 was formed after the formation, the electrolytic nickel plating layer 32 having a low electric resistance (phosphorus content of 1% or less and thickness 0 .3 to 6
Micron) may be formed. By reducing the phosphorus content, the electrical resistance can be lowered.
【００２０】さらに、アルミニウム合金材のスリーブ３
０上に無電解ニッケルメッキ層３１を形成し、その上に
電解銅メッキ層を形成してから電解ニッケルメッキ層３
２を形成する構成としてもよい。Further, the sleeve 3 made of aluminum alloy material
0, an electroless nickel plating layer 31 is formed, an electrolytic copper plating layer is formed thereon, and then an electrolytic nickel plating layer 3 is formed.
It may be configured to form 2.
【００２１】以上本発明の実施の形態について説明して
きたが、本発明はこれに限定されることなく請求項の記
載の範囲内において各種の変形、変更が可能なことは当
業者には自明であろう。Although the embodiment of the present invention has been described above, it is obvious to those skilled in the art that the present invention is not limited to this and various modifications and changes can be made within the scope of the claims. Ah
【００２２】[0022]
【発明の効果】以上説明したように、本発明によれば、
アルミニウム合金材のスリーブの外周表面に電気抵抗の
十分低い電解ニッケルメッキ層を形成したので、スリー
ブ外周表面でのトナー帯電量の分布を少なくすることが
できる。スリーブ外周表面でのトナー帯電量の分布が大
きいと、前回の静電画像がスリーブ上に残り、ゴースト
画像発生の原因となるが、電気抵抗の低い電解ニッケル
メッキ層でトナー帯電量の分布を少なくしてゴースト画
像発生を抑制することができる。As described above, according to the present invention,
Since the electrolytic nickel plating layer having a sufficiently low electric resistance is formed on the outer peripheral surface of the sleeve made of an aluminum alloy material, the distribution of the toner charge amount on the outer peripheral surface of the sleeve can be reduced. If the toner charge amount distribution on the outer peripheral surface of the sleeve is large, the previous electrostatic image will remain on the sleeve and cause ghost images.However, the electrolytic nickel plating layer with low electrical resistance reduces the toner charge amount distribution. As a result, the generation of ghost images can be suppressed.
【図１】本発明の実施の形態であって現像ローラーを示
す正断面図である。FIG. 1 is a front sectional view showing a developing roller according to an embodiment of the present invention.
【図２】現像ローラーを具備する現像装置の全体構成を
示す側断面図である。FIG. 2 is a side sectional view showing an overall configuration of a developing device including a developing roller.
１ 現像ローラー ２ 非磁性スリーブ ３ 永久磁石部材 ４ シャフト ５ フランジ １０ トナー容器 １１ トナー ２０ 感光体ドラム ３０ アルミニウム合金材のスリーブ ３１ 無電解ニッケルメッキ層 ３２ 電解ニッケルメッキ層 1 developing roller 2 non-magnetic sleeve 3 Permanent magnet member 4 shafts 5 flange 10 Toner container 11 toner 20 photoconductor drum 30 Aluminum alloy sleeve 31 Electroless nickel plating layer 32 Electrolytic nickel plating layer
───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.7 識別記号 ＦＩ Ｃ２５Ｄ 7/00 Ｃ２５Ｄ 7/00 Ｕ 7/04 7/04 Ｆ１６Ｃ 13/00 Ｆ１６Ｃ 13/00 Ａ (56)参考文献 特開 平２−105183（ＪＰ，Ａ) 特開 平８−8113（ＪＰ，Ａ) 特開 昭62−264550（ＪＰ，Ａ) 特開 平７−157882（ＪＰ，Ａ) (58)調査した分野(Int.Cl.7，ＤＢ名) G03G 15/08 501 C25D 5/12 C25D 5/30 C25D 5/44 C25D 5/50 C25D 7/00 C25D 7/04 F16C 13/00 ─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. 7 Identification code FI C25D 7/00 C25D 7/00 U 7/04 7/04 F16C 13/00 F16C 13/00 A (56) References 2-105183 (JP, A) JP-A-8-8113 (JP, A) JP-A-62-264550 (JP, A) JP-A-7-157882 (JP, A) (58) Fields investigated (Int. Cl. 7 , DB name) G03G 15/08 501 C25D 5/12 C25D 5/30 C25D 5/44 C25D 5/50 C25D 7/00 C25D 7/04 F16C 13/00
Claims (4)
面に直接、リン含有量１％以下で厚み０．３〜６ミクロ
ンの電解ニッケルメッキ層を形成し、該電解ニッケルメ
ッキ層が最外周表面となった非磁性スリーブを構成した
ことを特徴とする現像ローラー。1. An aluminum alloy sleeve having a phosphorus content of 1% or less and a thickness of 0.3 to 6 μm directly on the outer peripheral surface of the sleeve.
Forming an electrolytic nickel plating layer of down, electrolysis Nikkerume
A developing roller comprising a non-magnetic sleeve having an outermost surface of the wick layer .
面に無電解ニッケルメッキ層を形成し、その上に前記無
電解ニッケルメッキ層よりも電気抵抗の低い電解ニッケ
ルメッキ層を形成し、該電解ニッケルメッキ層が最外周
表面となった非磁性スリーブを構成したことを特徴とす
る現像ローラー。2. A forming an electroless nickel plating layer on the outer peripheral surface of the sleeve of the aluminum alloy material, Mu said thereon
An electrolytic nickel plating layer having a lower electric resistance than the electrolytic nickel plating layer is formed, and the electrolytic nickel plating layer is the outermost circumference.
Characterized by configuring a non-magnetic sleeve as the surface
Developing roller that.
面に無電解ニッケルメッキ層を形成し、その上に電解銅
メッキ層を形成し、さらにその上に前記無電解ニッケル
メッキ層よりも電気抵抗の低い電解ニッケルメッキ層を
形成し、該電解ニッケルメッキ層が最外周表面となった
非磁性スリーブを構成したことを特徴とする現像ローラ
ー。Wherein the aluminum on the outer peripheral surface of the sleeve of the alloy material to form an electroless nickel plating layer, the electroless copper plating layer is formed thereon, further wherein the electroless nickel thereon
An electrolytic nickel plating layer having an electric resistance lower than that of the plating layer was formed, and the electrolytic nickel plating layer became the outermost peripheral surface.
A developing roller having a non-magnetic sleeve .
面に無電解ニッケルメッキ処理で無電解ニッケルメッキ
層を形成してから電解ニッケルメッキ処理で前記無電解
ニッケルメッキ層よりも電気抵抗の低い電解ニッケルメ
ッキ層を形成し、その後、密着性改善のための加熱処理
を１００〜１５０℃で行うことを特徴する現像ローラー
の製造方法。Wherein said electroless after forming an electroless nickel plating layer by electroless nickel plating process on the outer peripheral surface of the sleeve of aluminum alloy material in the electroless nickel plating treatment
An electrolytic nickel plating layer with lower electrical resistance than the nickel plating layer is formed, and then heat treatment to improve adhesion.
Is carried out at 100 to 150 ° C., a developing roller manufacturing method.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP30925199A JP3502921B2 (en) | 1999-10-29 | 1999-10-29 | Developing roller and manufacturing method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP30925199A JP3502921B2 (en) | 1999-10-29 | 1999-10-29 | Developing roller and manufacturing method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2001125370A JP2001125370A (en) | 2001-05-11 |
| JP3502921B2 true JP3502921B2 (en) | 2004-03-02 |
Family
ID=17990759
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP30925199A Expired - Lifetime JP3502921B2 (en) | 1999-10-29 | 1999-10-29 | Developing roller and manufacturing method thereof |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3502921B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7932069B2 (en) | 2004-02-17 | 2011-04-26 | Morinaga Milk Industry Co., Ltd. | Process for producing lactoperoxidase |
| CN109722689A (en) * | 2019-01-17 | 2019-05-07 | 首都航天机械有限公司 | A kind of narrow deep trouth copper plate uniformity control method of aluminium alloy flange disk |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101241340A (en) * | 2003-10-09 | 2008-08-13 | 富士电机电子技术株式会社 | Electrophotograph developing roller and image forming device using the same |
| JP4671709B2 (en) * | 2005-02-25 | 2011-04-20 | 京セラミタ株式会社 | Developing roller and manufacturing method thereof |
| KR101200890B1 (en) | 2011-02-18 | 2012-11-13 | 최주환 | Method for remanufacturing inelastic developing roller of process cartridge |
| KR101404962B1 (en) | 2012-11-29 | 2014-06-27 | (주)우리정도 | Seamless Metal Sleeve having Triple Plating Layer and Manufacturing Method of thesame |
| JP6326591B2 (en) | 2016-10-25 | 2018-05-23 | 石原ケミカル株式会社 | Method for forming heat-treatable conductive film on non-conductive metal |
-
1999
- 1999-10-29 JP JP30925199A patent/JP3502921B2/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7932069B2 (en) | 2004-02-17 | 2011-04-26 | Morinaga Milk Industry Co., Ltd. | Process for producing lactoperoxidase |
| CN109722689A (en) * | 2019-01-17 | 2019-05-07 | 首都航天机械有限公司 | A kind of narrow deep trouth copper plate uniformity control method of aluminium alloy flange disk |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2001125370A (en) | 2001-05-11 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US6201942B1 (en) | Developer-carrying member, and developing device and image forming apparatus including the member | |
| JP3502921B2 (en) | Developing roller and manufacturing method thereof | |
| US4526130A (en) | Developing apparatus | |
| US4233386A (en) | Method of removing residual toner from surface of photoconductive member for use in electrostatic copying apparatus of the transfer type | |
| EP1235119B1 (en) | Developer-carrying member, and developing apparatus and image forming apparatus including the member | |
| JP2001100531A (en) | Developing device for electrophotography | |
| JPH03132767A (en) | Carrier of developer | |
| JP3297549B2 (en) | Developing sleeve and developing device | |
| JP2000347506A (en) | Developing device and image forming device | |
| US7248821B2 (en) | Charging device | |
| JPH09106173A (en) | Developer carrier and its production | |
| JP2000221773A (en) | Developing roller and its production | |
| JP2007233112A (en) | Magnetic carrier and two-component developer | |
| JPS61275782A (en) | Developing device | |
| JP2005055854A (en) | Image forming apparatus | |
| JPH0616205B2 (en) | Developer carrier | |
| JPS603654A (en) | Image forming method | |
| JP3695517B2 (en) | Positively charged electrophotographic photosensitive member, method for producing the same, and image forming apparatus | |
| JP4899749B2 (en) | Developer holding body, developer holding body manufacturing method, developing device, and image forming apparatus | |
| JPS59229571A (en) | Electrophotographic method | |
| JPH02204759A (en) | Developer | |
| JP2832063B2 (en) | Image holding member | |
| JPS58144864A (en) | Reversal development method | |
| JP2000258999A (en) | Developing roller | |
| JPH11249432A (en) | Manufacture of developing roller |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| TRDD | Decision of grant or rejection written | ||
| A01 | Written decision to grant a patent or to grant a registration (utility model) |
Free format text: JAPANESE INTERMEDIATE CODE: A01 Effective date: 20031021 |
|
| A61 | First payment of annual fees (during grant procedure) |
Free format text: JAPANESE INTERMEDIATE CODE: A61 Effective date: 20031119 |
|
| R150 | Certificate of patent or registration of utility model |
Ref document number: 3502921 Country of ref document: JP Free format text: JAPANESE INTERMEDIATE CODE: R150 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20081219 Year of fee payment: 5 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20091219 Year of fee payment: 6 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20091219 Year of fee payment: 6 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20101219 Year of fee payment: 7 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20101219 Year of fee payment: 7 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20111219 Year of fee payment: 8 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20111219 Year of fee payment: 8 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20121219 Year of fee payment: 9 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20121219 Year of fee payment: 9 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20131219 Year of fee payment: 10 |
|
| EXPY | Cancellation because of completion of term |