JPH10254291A - Image forming device - Google Patents
Image forming deviceInfo
- Publication number
- JPH10254291A JPH10254291A JP5464297A JP5464297A JPH10254291A JP H10254291 A JPH10254291 A JP H10254291A JP 5464297 A JP5464297 A JP 5464297A JP 5464297 A JP5464297 A JP 5464297A JP H10254291 A JPH10254291 A JP H10254291A
- Authority
- JP
- Japan
- Prior art keywords
- photoreceptor
- image forming
- forming method
- image
- charging
- 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
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、複写機、レーザー
ビームプリンター及び普通紙ＦＡＸ等の、電子写真応用
分野に広く用いることができる画像形成方法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an image forming method which can be widely used in electrophotographic applications, such as a copying machine, a laser beam printer, and a plain paper FAX.
【０００２】[0002]
【従来の技術】電子写真プロセスを用いる画像形成方法
において、帯電手段としては、従来、コロナ放電装置が
一般的であった。しかしながら、最近においては、電源
の低圧化が図れる、またオゾンの発生が極めて微量であ
る等の長所も有していることから、導電部材を感光体に
接触させる直接帯電装置が採用されつつある。2. Description of the Related Art In an image forming method using an electrophotographic process, a corona discharge device has been generally used as a charging means. However, recently, a direct charging device for bringing a conductive member into contact with a photoreceptor has been adopted because of its advantages such as lowering the voltage of a power supply and generation of an extremely small amount of ozone.
【０００３】このうち、導電部材と感光体の接触によっ
て形成される微小ギャップでの放電により帯電を行う場
合と、導電部材から感光体表面のトラップ準位や分散含
有させた導電性粒子等へ直接電荷を注入させる場合とが
ある。[0003] Of these, charging is performed by discharging in a minute gap formed by contact between the conductive member and the photosensitive member, and charging is performed directly from the conductive member to trap levels on the surface of the photosensitive member or conductive particles dispersed and contained. In some cases, charge is injected.
【０００４】前者の場合、感光体への流れ込み電流が増
加することにより、感光体の摩耗が大きい、トナーの融
着を生じ易い、といった問題がある。[0004] In the former case, there is a problem in that the current flowing into the photoreceptor increases, so that the abrasion of the photoreceptor is large and the fusion of toner tends to occur.
【０００５】本発明は後者の帯電プロセス（以後、注入
帯電と称する）を含む。この場合帯電部材は、感光体表
面の電荷注入層との接触確率を高め、帯電の均一性を十
分なものとするため、ブラシ状の形態が提案されている
（特願平５−６６１５０号公報）。The present invention includes the latter charging process (hereinafter referred to as injection charging). In this case, a brush-like form has been proposed for the charging member in order to increase the probability of contact with the charge injection layer on the surface of the photoreceptor and to ensure sufficient uniformity of charging (Japanese Patent Application No. 5-66150). ).
【０００６】このような注入帯電プロセスにおいては、
帯電工程で転写後の残余トナーの取り込み、吐き出しを
行うことが可能となるため、現像同時クリーニング、い
わゆるクリーナーレスプロセスが達成できる。In such an injection charging process,
Since it becomes possible to take in and discharge residual toner after transfer in the charging step, it is possible to achieve simultaneous development cleaning, a so-called cleaner-less process.
【０００７】しかし、トナー以外の成分、特に紙から発
生する紙粉はこのようなプロセスに追随しにくく、クリ
ーニング工程を伴わないと、耐久の繰返しに伴って感光
体表面や帯電器に蓄積する傾向にある。However, components other than toner, especially paper dust generated from paper, are difficult to follow such a process, and unless a cleaning step is performed, the powder tends to accumulate on the surface of the photoreceptor and the charger with repetition of durability. It is in.
【０００８】紙粉が感光体表面に付着した場合、従来の
放電を伴う帯電プロセスにおいては放電による表面の活
性化を招き、それが周辺環境の水分を吸着し、低抵抗化
することによる画像のボケや流れを引き起こしていた。
従って、本発明の電荷の直接注入帯電プロセスにおいて
は、放電は基本的には生じないか、もしくはかなり少な
い量で抑えられるため、画像のボケや流れは発生しにく
い系といえる。When paper dust adheres to the surface of the photoreceptor, the conventional charging process involving discharge causes activation of the surface due to discharge, which adsorbs moisture in the surrounding environment and lowers the resistance of the image. It was causing blur and flow.
Therefore, in the direct charge charging process of the present invention, since discharge is basically not generated or suppressed by a considerably small amount, it can be said that the system is less likely to cause blurring or running of an image.
【０００９】しかし、それでも皆無ではなく、特に、近
年電子写真のデジタル化が進み、潜像が微小ドットで形
成されるようになると、より表面の低抵抗化の影響が大
きい。更に、注入帯電プロセスにおいても、帯電の安定
化を図るために、感光体の暗部電位より高いピーク間電
圧のＡＣを重畳することがあり、この場合は更に表面の
活性化を引き起こし易い。However, this is not the case. In particular, in recent years, digitization of electrophotography has progressed, and when latent images are formed by minute dots, the effect of lowering the resistance of the surface is more significant. Further, also in the injection charging process, in order to stabilize charging, AC having a peak-to-peak voltage higher than the dark portion potential of the photoconductor may be superimposed, and in this case, the surface is more likely to be activated.
【００１０】[0010]
【発明が解決しようとする課題】従って、本発明は、上
述したような直接帯電とクリーナーレスプロセスにおけ
る感光体表面の汚染、及び、それにより生ずる画像のボ
ケ、流れを防止し、常に安定して高画質が得られる画像
形成方法を提供することを目的としている。SUMMARY OF THE INVENTION Accordingly, the present invention prevents contamination of the surface of a photoreceptor in the above-described direct charging and cleanerless processes, as well as blurring and running of an image caused thereby, and provides a stable image at all times. It is an object of the present invention to provide an image forming method capable of obtaining high image quality.
【００１１】[0011]
【課題を解決するための手段】即ち、本発明は、回転す
る電子写真感光体に電圧を印加した帯電部材を接触させ
て電荷の直接注入によって該感光体を帯電する工程、か
つ転写工程の後に該感光体上に残余するトナーを回収す
る工程を兼ねた現像工程を含む画像形成方法において、
該感光体の表面層が樹脂を含有し、かつ該表面層の摩耗
量が感光体１０万回転当り０．１〜１．０μｍであるこ
とを特徴とする画像形成方法である。That is, the present invention relates to a step of charging a photosensitive member by contacting a rotating charging member with a voltage applied to the rotating electrophotographic photosensitive member by direct injection of electric charge, and after the transferring step. An image forming method including a developing step also serving as a step of collecting a residual toner on the photoconductor,
An image forming method, wherein the surface layer of the photoconductor contains a resin, and the abrasion of the surface layer is 0.1 to 1.0 μm per 100,000 rotations of the photoconductor.
【００１２】[0012]
【発明の実施の形態】以下、本発明を詳しく説明する。DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below in detail.
【００１３】通常の電子写真プロセスにおいて、感光体
上の転写残トナーをクリーニングする工程では、弾性ブ
レードのエッジを感光体表面に当接させて掻き取るのが
一般的である。この工程で感光体表面が転写残トナーと
ともに削りとられ、更に、紙粉や放電生成物なども同時
に除去され易い。従って、ある一定量の感光体の摩耗を
発生させることが、表面の汚染を防ぐ一つの手段であっ
た。In a normal electrophotographic process, in the step of cleaning the transfer residual toner on the photoreceptor, the edge of the elastic blade is generally brought into contact with the surface of the photoreceptor and scraped off. In this step, the surface of the photoreceptor is scraped off together with the transfer residual toner, and furthermore, paper dust and discharge products are easily removed at the same time. Therefore, generating a certain amount of abrasion of the photoreceptor has been one means for preventing surface contamination.
【００１４】しかし、実質的にクリーニングを行わず、
かつ従来より放電の少ない帯電プロセスにおいて、感光
体表面の汚染を防ぐ手段は明確になっていないのが現状
である。However, substantially no cleaning is performed,
At the present time, means for preventing contamination of the photoreceptor surface in a charging process with less discharge than in the past has not been clarified.
【００１５】そこで、本発明者が鋭意検討した結果、感
光体表面の摩耗が感光体１０万回転当り０．１〜１．０
μｍに調整することで、高湿環境化でも画像のボケや流
れを生じないことを見い出した。Therefore, as a result of intensive studies by the present inventor, the wear of the surface of the photoreceptor was 0.1 to 1.0 per 100,000 rotations of the photoreceptor.
It has been found that by adjusting the thickness to μm, the image does not blur or flow even in a high-humidity environment.
【００１６】感光体へ直接電荷注入を行う場合の直接帯
電部材としては、高密度に植毛された導電性ブラシ、も
しくは円筒状マグネットに磁気拘束された磁性粒子ブラ
シを用い、これを感光体に接触、回転させることで帯電
を行う。As a direct charging member for directly injecting electric charge into the photoreceptor, a conductive brush planted at high density or a magnetic particle brush magnetically constrained by a cylindrical magnet is used, and this is brought into contact with the photoreceptor. The charging is performed by rotating.
【００１７】このような帯電部材との接触によっても、
わずかではあるが感光体の摩耗を生ずる場合もある。し
かし、感光体表面の摩耗を感光体１０万回転当り０．１
〜１．０μｍに安定にコントロールするためには、転写
工程と帯電工程の間に感光体に当接するブラシ状、ロー
ラ状、ウェブ状等の摺擦手段を設けることが好ましい。[0017] By such contact with the charging member,
A slight amount of wear of the photoreceptor may occur. However, the wear of the photoreceptor surface was reduced by 0.1 to 100,000 rotations of the photoreceptor.
In order to stably control the thickness to about 1.0 μm, it is preferable to provide a brush-like, roller-like, or web-like rubbing means that comes into contact with the photoreceptor between the transfer step and the charging step.
【００１８】加えて、これらの摺擦手段は、転写残トナ
ーの画像イメージを散らす効果もあり、本発明の現像同
時クリーニングプロセスにおいては有効である。In addition, these rubbing means also have the effect of scattering the image of the untransferred toner, and are effective in the simultaneous developing and cleaning process of the present invention.
【００１９】感光体表面の摩耗が感光体１０万回転当り
１．０μｍを超えると、付着物の除去は十分に行われる
ものの、クリーナーレスプロセス本来の目的である感光
体の寿命向上、ランニングコスト低減、エミッションレ
ス等が達成できない。If the surface of the photoreceptor exceeds 1.0 μm per 100,000 rotations of the photoreceptor, the adhered substances are sufficiently removed, but the life of the photoreceptor, which is the main purpose of the cleanerless process, is reduced, and the running cost is reduced. , Emissionless, etc. cannot be achieved.
【００２０】また、感光体表面の摩耗が感光体１０万回
転当り０．１μｍより少ない場合は、本発明の効果が発
揮されず、画像のボケや流れを生ずる。If the wear on the surface of the photoreceptor is less than 0.1 μm per 100,000 rotations of the photoreceptor, the effect of the present invention is not exhibited, and the image is blurred or run off.
【００２１】摩耗量は感光体の表面を構成する材料によ
っても調整可能である。感光体の表面には、帯電部材よ
り直接注入された電荷を受け取る準位を持っていること
が必要となる。このため表面層に、導電性粒子、あるい
は還元電位の低い化合物を分散させる、等の手段があ
る。これらを分散する媒体、即ち、樹脂の材質、更には
潤滑剤等の添加剤によって摩耗量を調整する。The amount of wear can also be adjusted by the material constituting the surface of the photoreceptor. It is necessary that the surface of the photoreceptor has a level for receiving the charge directly injected from the charging member. For this reason, there is a method of dispersing conductive particles or a compound having a low reduction potential in the surface layer. The amount of abrasion is adjusted by a medium for dispersing them, that is, a resin material, and an additive such as a lubricant.
【００２２】無機感光体の一つにアモルファスシリコン
があり、感光体自身の構造の中に注入準位を有すること
が知られている。しかしこの場合は、感光体が極めて摩
耗し難く、本発明のような手段では効果を発現すること
ができない。It is known that amorphous silicon is one of the inorganic photoreceptors and has an injection level in the structure of the photoreceptor itself. However, in this case, the photoreceptor is extremely hard to be worn, and the effect cannot be exhibited by means such as the present invention.
【００２３】以下、実施例により本発明を説明する。 （実施例１） 感光体作成例：負極性のＯＰＣ（有機感光体）を作成し
た。半導体レーザー光に感度を有するフタロシアニン顔
料をブチラール樹脂（商品名ＢＸ−１、積水化学工業
製）に分散した電荷発生層に、トリフェニルアミン系化
合物をビスフェノールＺ型ポリカーボネート樹脂（商品
名Ｚ−２００、三菱瓦斯化学製）に溶解した電荷輸送層
を積層した。更に注入可能な表面層として、酸化スズと
ポリ四フッ化エチレンの粉体を重合性アクリルモノマー
と溶剤に分散したものを電荷輸送層上に塗布し、光開始
剤と共にＵＶ硬化して膜形成した。潤滑剤であるポリ四
フッ化エチレンは表面層全体の固形分重量比率で２５％
とした。 ブチラール樹脂（商品名ＢＸ−１、積水化学工業製） 画像形成装置としてレーザーを光源とするデジタル複写
機（ＧＰ−５５；キャノン（株）製）を用意し、帯電器
部分及び高圧電源部を改造して電荷注入帯電が行えるよ
うにした。また、クリーナー部を取り外し、その位置に
ブラシを固定、装着した。Hereinafter, the present invention will be described with reference to examples. (Example 1) Photoreceptor preparation example: OPC (organic photoreceptor) of negative polarity was prepared. In a charge generation layer in which a phthalocyanine pigment having sensitivity to semiconductor laser light is dispersed in a butyral resin (trade name: BX-1, manufactured by Sekisui Chemical Co., Ltd.), a triphenylamine compound is bisphenol Z-type polycarbonate resin (trade name: Z-200, (Mitsubishi Gas Chemical Co., Ltd.). Further, as an injectable surface layer, a dispersion of a powder of tin oxide and polytetrafluoroethylene in a polymerizable acrylic monomer and a solvent was applied on the charge transport layer, and UV cured together with a photoinitiator to form a film. . Polytetrafluoroethylene as a lubricant is 25% by weight of the solid content of the entire surface layer
And Butyral resin (trade name: BX-1, manufactured by Sekisui Chemical Co., Ltd.) A digital copying machine (GP-55; manufactured by Canon Inc.) using a laser as a light source is prepared as an image forming apparatus, and the charger section and the high-voltage power supply section are modified. To perform charge injection charging. In addition, the cleaner was removed, and the brush was fixed and mounted at that position.
【００２４】ブラシの材質としては、一般的な繊維状の
ものであれば特に制限はなく、感光体に対する機械的な
損傷を避けるように設定すればよい。ここでは、長さ５
ｍｍのカーボン分散ナイロンの繊維を芯金にロール状に
植毛したものを用いた。感光体への侵入量は１ｍｍとし
た。The material of the brush is not particularly limited as long as it is a general fibrous material, and may be set so as to avoid mechanical damage to the photoreceptor. Here, length 5
A carbon-dispersed nylon fiber having a diameter of 1 mm was planted in a core metal in a roll form. The amount of penetration into the photoconductor was 1 mm.
【００２５】更に現像部分は、非磁性トナーとフェライ
トキャリアによる二成分現像を行う構成に改造した。Further, the developing portion was modified to perform two-component development using a non-magnetic toner and a ferrite carrier.
【００２６】なお、この装置のデジタル画素密度は４０
０ｄｐｉである。The digital pixel density of this device is 40
0 dpi.
【００２７】帯電部材作成例：ポリスチレン樹脂にマグ
ネタイトを１００部入れて混練、粉砕し、粒子径３０μ
ｍ、抵抗値１×１０6 Ωの磁性粒子を得た。これをマグ
ネットローラ上に厚さ１ｍｍでコートして磁気ブラシと
した。Example of preparing a charging member: 100 parts of magnetite is put into a polystyrene resin, kneaded and pulverized, and the particle diameter is 30 μm.
m, magnetic particles having a resistance value of 1 × 10 6 Ω were obtained. This was coated on a magnet roller with a thickness of 1 mm to form a magnetic brush.
【００２８】上記の帯電部材は、感光体との間に幅約２
ｍｍのニップを設けるように設置される。ブラシの周速
は感光体表面の周速に対して２倍の早さで回転するよう
になっており、感光体との接触の均一性を確保するよう
にしている。The charging member has a width of about 2 mm between the charging member and the photosensitive member.
It is installed to provide a nip of mm. The peripheral speed of the brush rotates twice as fast as the peripheral speed of the surface of the photoreceptor to ensure uniform contact with the photoreceptor.
【００２９】この磁気ブラシにＤＣバイアス−７００Ｖ
を印加し、更にＶｐｐ６００Ｖ，１０００ＨｚのＡＣバ
イアスを重畳することにより感光体に電荷注入され、−
６８０Ｖの表面電位を得る。A DC bias of -700 V is applied to this magnetic brush.
Is applied to the photoreceptor by superimposing an AC bias of Vpp 600 V, 1000 Hz.
A surface potential of 680 V is obtained.
【００３０】このような画像形成装置を用いて連続プリ
ントによる耐久テストを行った。常温常湿環境で１万枚
のコピーを繰り返した後、３０℃／８５％ＲＨ環境に放
置してコピーサンプルをとった。いずれの時点のサンプ
ルにおいても初期と同等の良好な画像が維持されてい
た。A durability test by continuous printing was performed using such an image forming apparatus. After repeating 10,000 copies in a normal temperature and normal humidity environment, the sample was left in a 30 ° C./85% RH environment to obtain a copy sample. In each of the samples at the time, a good image equivalent to the initial state was maintained.
【００３１】また、この時の感光体表面の摩耗量は、感
光体１０万回転当り０．５μｍであった。The amount of abrasion on the surface of the photoreceptor at this time was 0.5 μm per 100,000 rotations of the photoreceptor.
【００３２】（実施例２）実施例１のブラシを、ヒドリ
ンゴムにカーボンを分散させた、直径１４ｍｍのゴムロ
ーラに代えた。ゴムのアスカーＣ硬度は３８度、感光体
との当接ニップ幅は１ｍｍで、感光体の回転に従動する
ように設定した。(Example 2) The brush of Example 1 was replaced with a rubber roller having a diameter of 14 mm in which carbon was dispersed in hydrin rubber. The Asker C hardness of the rubber was 38 degrees, the contact nip width with the photoconductor was 1 mm, and the rubber was set to follow the rotation of the photoconductor.
【００３３】また、帯電のバイアスはＤＣ−７００Ｖに
加えて、Ｖｐｐ８００Ｖ，１０００ＨｚのＡＣバイアス
を重畳し、−６８０Ｖの表面電位を得た。As the charging bias, in addition to DC-700 V, an AC bias of Vpp of 800 V and 1000 Hz was superimposed to obtain a surface potential of -680 V.
【００３４】このような条件で実施例１と同様の連続プ
リントによる耐久テストを行ったが、いずれの時点のサ
ンプルにおいても初期と同等の良好な画像が維持されて
いた。Under these conditions, a durability test was performed by continuous printing in the same manner as in Example 1. As a result, a good image equivalent to the initial image was maintained in any of the samples at any time.
【００３５】また、この時の感光体表面の摩耗量は、感
光体１０万回転当り０．７μｍであった。At this time, the amount of wear on the surface of the photoconductor was 0.7 μm per 100,000 rotations of the photoconductor.
【００３６】（実施例３）実施例１において、感光体の
表面層のポリ四フッ化エチレンを表面層全体の固形分重
量比率で１５％とし、その他は同一条件で評価を行っ
た。Example 3 In Example 1, the evaluation was performed under the same conditions except that polytetrafluoroethylene in the surface layer of the photoreceptor was 15% by weight of the solid content of the entire surface layer.
【００３７】この場合も１００００枚まで良好な画像が
維持されていた。また、この時の感光体表面の摩耗量
は、感光体１０万回転当り０．３μｍであった。Also in this case, a good image was maintained up to 10,000 sheets. At this time, the abrasion amount of the photoreceptor surface was 0.3 μm per 100,000 rotations of the photoreceptor.
【００３８】（比較例１）実施例１において、帯電器前
のブラシを装着せず、その他は同一条件で評価を行っ
た。(Comparative Example 1) In Example 1, the evaluation was performed under the same conditions except that the brush in front of the charger was not mounted.
【００３９】この結果、２０００枚程度プリントした段
階で一晩放置後に小さい文字や網点ドットがにじむ、い
わゆる画像ボケが発生した。更に、装置を３０℃／８５
％ＲＨ環境に放置した後の画像サンプルを採取したとこ
ろ、より著しいボケが見られた。As a result, so-called image blurring, in which small letters and halftone dots were blurred after standing overnight after printing about 2000 sheets, occurred. Further, the apparatus is set at 30 ° C./85
When the image sample after being left in the environment of% RH was taken, more noticeable blur was observed.
【００４０】この時の感光体表面の摩耗量は、感光体１
０万回転当り０．０５μｍであった。At this time, the amount of wear on the surface of the photosensitive member was
It was 0.05 μm per 10,000 rotations.
【００４１】（比較例２）実施例１のブラシを、ヒドリ
ンゴムにカーボンを分散させた、直径１４ｍｍのゴムロ
ーラに代えた。ゴムのアスカーＣ硬度は６５度、感光体
との当接ニップ幅は１．５ｍｍで、感光体の回転方向に
対して逆回転、周速は感光体の１．２倍とした。Comparative Example 2 The brush of Example 1 was replaced with a rubber roller having a diameter of 14 mm and carbon dispersed in hydrin rubber. The Asker C hardness of the rubber was 65 degrees, the contact nip width with the photoconductor was 1.5 mm, the rotation was reverse to the rotation direction of the photoconductor, and the peripheral speed was 1.2 times that of the photoconductor.
【００４２】このような感光体を用いて、実施例１と同
様の耐久テストを行った。その結果、高温高湿環境での
画像ボケは発生しなかったものの、感光体の摩耗傷に起
因する黒スジが画面に現れた。Using such a photosensitive member, a durability test similar to that in Example 1 was performed. As a result, although image blur did not occur in a high-temperature and high-humidity environment, black streaks caused by abrasion scratches on the photoreceptor appeared on the screen.
【００４３】この時の感光体表面の摩耗量は、感光体１
０万回転当り１．５μｍであった。At this time, the amount of wear on the surface of the photoreceptor
It was 1.5 μm per 10,000 rotations.
【００４４】[0044]
【発明の効果】本発明により、電荷注入帯電とクリーナ
ーレスプロセスにおける感光体表面の汚染、及び、それ
により生ずる画像のボケ、流れを防止し、常に安定して
高画質の得られる画像形成方法を提供することが可能と
なった。According to the present invention, there is provided an image forming method capable of preventing contamination of the photoreceptor surface in the charge injection charging and the cleanerless process, and blurring and running of the image caused by the contamination, thereby always obtaining a stable and high image quality. It became possible to provide.
───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.6 識別記号 ＦＩ Ｇ０３Ｇ 21/00 Ｇ０３Ｇ 21/00 ──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. 6 Identification code FI G03G 21/00 G03G 21/00
Claims (3)
た帯電部材を接触させて電荷の直接注入によって該感光
体を帯電する工程、かつ転写工程の後に該感光体上に残
余するトナーを回収する工程を兼ねた現像工程を含む画
像形成方法において、該感光体の表面層が樹脂を含有
し、かつ該表面層の摩耗量が感光体１０万回転当り０．
１〜１．０μｍであることを特徴とする画像形成方法。1. A step in which a charged member to which a voltage is applied is brought into contact with a rotating electrophotographic photoreceptor to charge the photoreceptor by direct injection of electric charge, and a toner remaining on the photoreceptor after the transfer step is collected. In an image forming method including a developing step also serving as a step of carrying out, the surface layer of the photoreceptor contains a resin, and the abrasion amount of the surface layer is 0.000 / 100,000 rotations.
An image forming method having a thickness of 1 to 1.0 μm.
体を摺擦する工程を含む請求項１の画像形成方法。2. The image forming method according to claim 1, further comprising a step of rubbing a photosensitive member between said transferring step and said charging step.
擦手段が、感光体に当接するブラシ状、ローラ状及びウ
ェブ状よりなる群から選ばれる少なくとも１つの手段で
ある請求項２の画像形成方法。3. The rubbing means used in the step of rubbing the photoreceptor is at least one means selected from the group consisting of a brush, a roller, and a web in contact with the photoreceptor. Image forming method.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5464297A JPH10254291A (en) | 1997-03-10 | 1997-03-10 | Image forming device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5464297A JPH10254291A (en) | 1997-03-10 | 1997-03-10 | Image forming device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH10254291A true JPH10254291A (en) | 1998-09-25 |
Family
ID=12976439
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5464297A Pending JPH10254291A (en) | 1997-03-10 | 1997-03-10 | Image forming device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH10254291A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004020697A (en) * | 2002-06-13 | 2004-01-22 | Ricoh Co Ltd | Image forming apparatus of electrophotographic system, and copying machine |
| US7759040B2 (en) | 2004-03-24 | 2010-07-20 | Fuji Xerox Co., Ltd. | Image forming method |
-
1997
- 1997-03-10 JP JP5464297A patent/JPH10254291A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004020697A (en) * | 2002-06-13 | 2004-01-22 | Ricoh Co Ltd | Image forming apparatus of electrophotographic system, and copying machine |
| US7444097B2 (en) | 2002-06-13 | 2008-10-28 | Ricoh Company, Ltd. | Air-conditioned electrophotographic image forming apparatus |
| US7759040B2 (en) | 2004-03-24 | 2010-07-20 | Fuji Xerox Co., Ltd. | Image forming method |
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