JPH02298971A - Developing device - Google Patents
Developing deviceInfo
- Publication number
- JPH02298971A JPH02298971A JP1119946A JP11994689A JPH02298971A JP H02298971 A JPH02298971 A JP H02298971A JP 1119946 A JP1119946 A JP 1119946A JP 11994689 A JP11994689 A JP 11994689A JP H02298971 A JPH02298971 A JP H02298971A
- Authority
- JP
- Japan
- Prior art keywords
- developing sleeve
- toner
- doctor blade
- lubricant
- powder
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 239000000314 lubricant Substances 0.000 claims abstract description 43
- 239000000843 powder Substances 0.000 claims abstract description 38
- 239000007788 liquid Substances 0.000 claims abstract description 14
- 239000011248 coating agent Substances 0.000 abstract description 6
- 238000000576 coating method Methods 0.000 abstract description 6
- 239000002245 particle Substances 0.000 abstract description 6
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 abstract description 4
- 238000011109 contamination Methods 0.000 abstract description 3
- 230000007547 defect Effects 0.000 abstract description 3
- 230000001050 lubricating effect Effects 0.000 abstract 4
- 238000000034 method Methods 0.000 description 12
- 238000004140 cleaning Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 230000000873 masking effect Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- AJDIZQLSFPQPEY-UHFFFAOYSA-N 1,1,2-Trichlorotrifluoroethane Chemical compound FC(F)(Cl)C(F)(Cl)Cl AJDIZQLSFPQPEY-UHFFFAOYSA-N 0.000 description 1
- KXGFMDJXCMQABM-UHFFFAOYSA-N 2-methoxy-6-methylphenol Chemical compound [CH]OC1=CC=CC([CH])=C1O KXGFMDJXCMQABM-UHFFFAOYSA-N 0.000 description 1
- 229920006311 Urethane elastomer Polymers 0.000 description 1
- 230000005856 abnormality Effects 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 239000002313 adhesive film Substances 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 238000007598 dipping method Methods 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 229920001568 phenolic resin Polymers 0.000 description 1
- 239000005011 phenolic resin Substances 0.000 description 1
- -1 polyethylene terephthalate Polymers 0.000 description 1
- 229920000139 polyethylene terephthalate Polymers 0.000 description 1
- 239000005020 polyethylene terephthalate Substances 0.000 description 1
- 229920003002 synthetic resin Polymers 0.000 description 1
- 239000000057 synthetic resin Substances 0.000 description 1
- 230000007306 turnover Effects 0.000 description 1
Landscapes
- Dry Development In Electrophotography (AREA)
Abstract
Description
【発明の詳細な説明】
「産業上の利用分野」
本発明は電子写真法を用いた画像形成装置に関し、現像
スリーブとドクターブレードが接触する部分の摩擦抵抗
を削減するために用いる潤滑剤塗布方法化間するもので
ある。DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to an image forming apparatus using electrophotography, and relates to a lubricant application method used to reduce frictional resistance at a contact area between a developing sleeve and a doctor blade. It is something that changes.
「従来の技術」
第３図は画像形成装置例えば電子複写機の縦断面図であ
る。図において左右方向に運動する原稿台ガラス１上に
置かれ、圧着板３により圧せられた原稿２は反射笠４に
一部覆われた照明ランプＬによって照射され、原稿の反
射光は短焦点レンズアレイ５を通じて図示矢印方向に原
稿台ガラス１の左右方向の運動と同期回転している感光
ドラム６に結像する。感光ドラム６は一次帯電器７によ
り一様にマイナスのコロナ帯電されて怠り、上記像光に
より潜像が形成され、現儂器８においてトナーＴが現像
スリーブ１０に担持搬出され、ドクターブレード９によ
って現像スリーブ１０上のトナー厚みが整えられて感光
ドラム６表面に付与され、前記潜像は顕画像となる。次
に感光ドラム６上の顕画像が転写帯電器１１との対向面
に到ると詳細は示さないが給紙装置から送られた転写材
に転写分離され、定着装置に送られ、定着され機外に排
出される。``Prior Art'' FIG. 3 is a longitudinal sectional view of an image forming apparatus, such as an electronic copying machine. In the figure, an original 2 placed on an original platen glass 1 that moves in the left-right direction and pressed by a pressure bonding plate 3 is irradiated by an illumination lamp L partially covered by a reflective shade 4, and the light reflected from the original is short focused. An image is formed through a lens array 5 on a photosensitive drum 6 which is rotating in synchronization with the horizontal movement of the original table glass 1 in the direction of the arrow shown in the figure. The photosensitive drum 6 is uniformly charged with a negative corona by the primary charger 7, a latent image is formed by the image light, and the toner T is carried and carried out by the developing sleeve 10 in the developing unit 8, and is charged by the doctor blade 9. The toner on the developing sleeve 10 is adjusted in thickness and applied to the surface of the photosensitive drum 6, and the latent image becomes a visible image. Next, when the developed image on the photosensitive drum 6 reaches the surface facing the transfer charger 11, it is transferred and separated onto a transfer material sent from a paper feeder, and sent to a fixing device where it is fixed and machined. is discharged outside.
転写後感光ドラム６はクリーニング器１２の位置へ回転
し、クリーニングブレード１３により残トナーが除去さ
れる。After the transfer, the photosensitive drum 6 is rotated to the position of the cleaning device 12, and the remaining toner is removed by the cleaning blade 13.
ドクターブレード９は硬質材例えば金属、合成樹脂の保
持部材９ａにウレタンゴム、ニドＩＪルゴム或はポリエ
チレンテレフタレート等の弾柱体９ｂを固着したもので
ある。The doctor blade 9 has a holding member 9a made of a hard material such as metal or synthetic resin, and a bullet body 9b made of urethane rubber, Nido IJ rubber, polyethylene terephthalate, etc. fixed thereto.
第４図は第３図の現像スリーブ１ｏとドクターブレード
９の関係を示している。第４図（ａｌは正常状態であっ
て現像スリーブ１０は反時計方向に回転し、ドクターブ
レード９の先端に向って現像スリーブ１０の局面が移動
してくる。第４図（ａ）においてドクターブレード９と
現像スリーブ１０間の摩擦が大きくて第４図（ｂ）に示
すようにドクターブレード９と現像スリーブ１０の接触
面が摺擦しないで現像スリーブ１０の局面に従って追従
し、第４図（Ｃ）のようにドクターブレード９の弾性体
９ｂが裏返ってしまう。FIG. 4 shows the relationship between the developing sleeve 1o and the doctor blade 9 shown in FIG. FIG. 4 (al is a normal state, the developing sleeve 10 rotates counterclockwise, and the surface of the developing sleeve 10 moves toward the tip of the doctor blade 9. In FIG. 4 (a), the doctor blade The friction between the doctor blade 9 and the developing sleeve 10 is large, so that the contact surface between the doctor blade 9 and the developing sleeve 10 follows the curve of the developing sleeve 10 without rubbing as shown in FIG. 4(b). ) The elastic body 9b of the doctor blade 9 turns over.
上記現象を防止するため粉末潤滑剤２０Ｉ（第５図）を
現像スリーブ１０の全域に塗布していた。In order to prevent the above phenomenon, a powder lubricant 20I (FIG. 5) was applied to the entire area of the developing sleeve 10.
「発明が解決しようとしている課題」
しかしながら、上記従来例では潤滑剤が極性をもった粉
体粒子のため次のような欠点があった。"Problems to be Solved by the Invention" However, in the conventional example described above, since the lubricant is composed of polar powder particles, there are the following drawbacks.
（１）第５図に示すように現像スリーブ１０表面に、粉
末潤滑剤２０１が付着する。従って減摩の役目をするが
トナーＴと異極性の粉末潤滑剤２０１を用いた場合、ト
ナーＴが現像スリーブ１０表面にきても粉末潤滑剤２０
１上にトナーＴが層状番こ重って感光ドラム６の方へ粉
末潤滑剤２０１が現像されず、現像スリーブ１０表面を
粉末潤滑剤２０１で汚染した状態となり、トナーＴの現
像スリーブ１ｏへのコーティングに影響を及ぼすためコ
ピー濃度が薄くなるといった問題があった。(1) As shown in FIG. 5, the powder lubricant 201 adheres to the surface of the developing sleeve 10. Therefore, when using a powder lubricant 201 that functions to reduce friction but has a different polarity than the toner T, even if the toner T reaches the surface of the developing sleeve 10, the powder lubricant 201
The powder lubricant 201 is not developed toward the photosensitive drum 6 because the toner T is piled up in a layer on the photosensitive drum 6, and the surface of the developing sleeve 10 is contaminated with the powder lubricant 201. There was a problem that the copy density became thinner because it affected the coating.
（２）パーソナル複写機で画像形成装置の一部例えば感
光ドラム６、−次歪電器７、現像器８、クリーニング器
１２を一体のカートリッジとしたプロセスカートリッジ
においては画出しをしないで製品を保証している。この
ため組立工程ではそれを保証するための代用特性を測定
している。ドクターブレード９も組立工程で光学的に取
付は位置を測定しているため、ドクターブレード９のメ
ーカーで事前に粉末潤滑剤２０１を塗布して納入するこ
とは出来ない。(2) For personal copying machines, a part of the image forming device, such as a process cartridge in which the photosensitive drum 6, -order distortion device 7, developing device 8, and cleaning device 12 are integrated into a cartridge, is guaranteed without image printing. are doing. Therefore, in the assembly process, substitute characteristics are measured to ensure this. Since the position of the doctor blade 9 is also measured optically during the assembly process, it is not possible for the manufacturer of the doctor blade 9 to apply powder lubricant 201 in advance before delivery.
従って組立工程で粉末潤滑剤２０１を塗布しているのだ
が、組立工程で飛散することで人体に悪影響を及ぼした
り、組立時のラインタクトに合わせて粉末潤滑剤２０１
を塗布するため、作業者による塗布量の違いが大きい。Therefore, the powder lubricant 201 is applied during the assembly process, but it may scatter during the assembly process and have an adverse effect on the human body.
The amount applied varies greatly depending on the operator.
又、作業者のバラツキで塗布状態にムラが発生する。こ
のように工程の制約があり、品質にムラが出るおそれが
ある。Moreover, unevenness occurs in the coating state due to variations among workers. As described above, there are restrictions on the process, and there is a risk of uneven quality.
（５） 組立上の問題点も然る事ながらプロセスカー
トリッジは画出しをせずに出荷しているため、出荷後ド
クターブレード９かめくれてしまうと現像器８内のトナ
ーＴがカートリッジの回転体端部と外部を密封している
端部シール付近からもれてしまい複写機内に飛散してし
まうといったトラブルとなってしまう。又、粉末潤滑剤
２０１が粉体のため製品内に飛散し、−次歪電器７に付
着して帯電不良を起してしまう。(5) As well as assembly problems, the process cartridge is shipped without image printing, so if the doctor blade 9 is turned over after shipping, the toner T in the developing device 8 will cause the cartridge to rotate. This can cause problems such as leakage from the vicinity of the end seal that seals the body end and the outside, and the product being scattered inside the copying machine. Further, since the powder lubricant 201 is a powder, it scatters inside the product and adheres to the -order distortion electric device 7, causing charging failure.
この様なトラブルは粉末潤滑剤２０’がドクターブレー
ド上に固着されておらず多少の振動や風圧によってとれ
てしまう点が問題である。The problem with this kind of trouble is that the powder lubricant 20' is not fixed on the doctor blade and can be removed by some vibration or wind pressure.
本発明は、潤滑剤としてトナーと同じ極性をもつ粉体粒
子を用い且つ、揮発性の液体に分散させた潤滑剤とする
ことによって粘着性をもたせ、ドクターブレード上に塗
布できるようにすることにより、上記課題を解決した現
像装置を提供することを目的とする。The present invention uses powder particles having the same polarity as the toner as a lubricant, and the lubricant is dispersed in a volatile liquid to give it adhesiveness so that it can be applied onto the doctor blade. An object of the present invention is to provide a developing device that solves the above problems.
「課題を解決するための手段」
本発明は現像スリーブと圧接する領域において、ドクタ
ーブレードに揮発性の液体に分散させた粉末潤滑剤を塗
布し、前記粉末潤滑剤はトナーと同極性奢こ帯電する粉
末潤滑剤であることを特徴とする現像装置である。"Means for Solving the Problems" The present invention applies a powder lubricant dispersed in a volatile liquid to the doctor blade in the area where it comes into pressure contact with the developing sleeve, and the powder lubricant has the same polarity as the toner and is highly charged. This developing device is characterized in that it is a powder lubricant.
「実施例」
以下、本発明を図示の実施例に基づいて説明する。第１
図（ａ）、［有］）、（Ｃ）、（ｄ）、（ｅ）は夫々が
粉末潤滑剤を塗布する方法を示している。"Example" The present invention will be described below based on the illustrated example. 1st
Figures (a), (c), (d), and (e) each show a method of applying the powder lubricant.
第１図（ａ）に示すようにドクターブレード９の弾性体
９ｂ上に、トナー粒径とほぼ同じ球状のｍ子（ｌＬ＋−
スパール、トナー、フェノール樹脂等）の白色の粉末潤
滑剤（以下同じ）２０を分散した揮発性の液体（例、フ
ロン１１３、アルコール、エタノール（以下同じ）１５
を７１ケ１４で塗布する。As shown in FIG. 1(a), on the elastic body 9b of the doctor blade 9, spherical m particles (lL+-
Volatile liquid (e.g. Freon 113, alcohol, ethanol (same below) 15) in which white powder lubricant (spar, toner, phenolic resin, etc.) (same as below) is dispersed 20
Apply 71 coats of 14 coats.
第１図（ｂ）に示すように粉末潤滑剤２０が分散した揮
発性の液体１５の中にドクターブレード９の弾性体９ｂ
を浸すディッピング方式を用いて表面にコーティングす
る。As shown in FIG. 1(b), the elastic body 9b of the doctor blade 9 is placed in the volatile liquid 15 in which the powder lubricant 20 is dispersed.
Coat the surface using a dipping method.
第１図（Ｃ）に示すように粉末潤滑剤２０が分散した揮
発性の液体１５を含むスポンジローラ１６を回転させて
ドクターブレード９の弾性体９ｂ上に塗布する。As shown in FIG. 1C, a sponge roller 16 containing a volatile liquid 15 in which a powdered lubricant 20 is dispersed is rotated to apply the powder onto the elastic body 9b of the doctor blade 9.
第１図（ｄ）に示すように塗布する領域以外にマスキン
グ１７を施し、スプレー１８で粉末潤滑剤２０が分散し
た揮発性の液体１５を塗布する。As shown in FIG. 1(d), a masking 17 is applied to areas other than the area to be coated, and a volatile liquid 15 in which a powder lubricant 20 is dispersed is coated with a spray 18.
第１図（ｅ）に示すように粉末潤滑剤２０が分散した揮
発性の液体１５をローラーポンプ１９を使用して、粉末
潤滑剤２０を分散した揮発性の液体１５を収容した容器
内から、該液体１５を汲上げ、ノズル１９ａの先から定
量吐出しドクターブレード９の弾性体９ｂ表面に均一に
コーティングする。As shown in FIG. 1(e), using a roller pump 19, a volatile liquid 15 in which powdered lubricant 20 is dispersed is pumped from a container containing volatile liquid 15 in which powdered lubricant 20 is dispersed. The liquid 15 is pumped up and discharged in a fixed amount from the tip of the nozzle 19a to uniformly coat the surface of the elastic body 9b of the doctor blade 9.
既に述べた第５図に示すように、その製品で使用されて
いるトナーＴと異極性の粉末潤滑剤２０１を使用した場
合、トナーＴが現像スリーブ１０上にきても現像スリー
ブ１０表面にこの粉末潤滑剤２０１が残った状態となり
、現像スリーブ１０上のトナーコーティングに異常を来
たしてしまう状態である構成において、上述のようにド
クターブレードの弾性体９ｂにトナーＴと同極性の粉末
潤滑剤２０を塗布した処、弾性体９ｂがめくれる現象は
解消し、且つコピー濃度が低下することがなかった。当
然粉体が飛散して周辺を汚してしまうということはなく
なった。As shown in FIG. 5 already mentioned, if a powder lubricant 201 with a polarity different from that of the toner T used in the product is used, even if the toner T is on the developing sleeve 10, this will not appear on the surface of the developing sleeve 10. In a configuration where the powder lubricant 201 remains and causes an abnormality in the toner coating on the developing sleeve 10, the powder lubricant 20 having the same polarity as the toner T is applied to the elastic body 9b of the doctor blade as described above. When this was applied, the phenomenon of the elastic body 9b turning over was resolved, and the copy density did not decrease. Naturally, there is no longer any chance of powder scattering and contaminating the surrounding area.
これは第２図に示すように現像スリーブ１０にトナーＴ
と粉末潤滑剤２０が同極性のため混り合い、トナーＴの
現像スリーブ１０における層厚を実質的に薄くするとい
う現象になったためと考えられる。As shown in FIG.
This is considered to be because the powder lubricant 20 and the powder lubricant 20 have the same polarity and mix together, resulting in a phenomenon in which the layer thickness of the toner T on the developing sleeve 10 becomes substantially thinner.
粉末潤滑剤２０は現像によってトナーＴと共に感光ドラ
ム６上に移り、現像される。転写後感光ドラム６上に残
留したトナーＴ及び粉末潤滑剤２０はクリーニング器１
２により除去される。The powder lubricant 20 is transferred onto the photosensitive drum 6 together with the toner T during development, and is developed. The toner T and powder lubricant 20 remaining on the photosensitive drum 6 after transfer are removed by a cleaning device 1.
2 is removed.
以上説明したように、トナーと同極性の粉末潤滑剤を使
用したため、トナーと同じ様に現像されていつまでも現
像スリーブ上に残ることがなくなるので現像スリーブの
汚染による濃度不良がなくなる。又、揮発性の液体の中
に分散させて塗布する方法を用いることによりドクター
ブレード上にある粘着力をもって塗膜されるので粉末潤
滑剤がドクターブレード上に残らないで飛散してしまう
といった問題点もなくなる。As explained above, since the powdered lubricant having the same polarity as the toner is used, it is developed in the same way as the toner and does not remain on the developing sleeve forever, thereby eliminating density defects due to contamination of the developing sleeve. In addition, by using the method of dispersing and applying the lubricant in a volatile liquid, the powdered lubricant is coated with a certain adhesive force on the doctor blade, so there is a problem that the powder lubricant does not remain on the doctor blade and scatters. It also disappears.
又、ドクターブレード上にある粘着力をもって塗膜され
た状態なので組立工程及び輸送中の振動や風圧等で飛散
したりドクターブレードからすべり落ちたりすることは
まるでない。In addition, since the adhesive film is coated on the doctor blade, it will not scatter or slip off the doctor blade due to vibrations or wind pressure during the assembly process or transportation.
従って、確実にドクターブレードと現像スリーブの間に
潤滑剤を配することが出来るので、現像スリーブの回転
によってドクターブレードのめくれはなくなる。Therefore, since the lubricant can be reliably placed between the doctor blade and the developing sleeve, the doctor blade does not turn over due to rotation of the developing sleeve.
組立工程上では、この粉末潤滑剤を塗布する際白い塗料
をドクターブレード上に塗装したのと同じ状態となるの
で塗りムラの判定がし易くなる。During the assembly process, when this powder lubricant is applied, the condition is the same as when white paint is applied to the doctor blade, making it easier to judge uneven coating.
第１図（ａ）、（ｂ）、（Ｃ）、（ｄ）、（ｅ）は夫々
が本発明の実施例の斜視図、第２図はトナーと同極性の
潤滑剤を使用した場合の現像スリーブ表面の説明図、第
３図は画儂形成装置の縦断面図、第４図（ａ）、（ｂ）
、（Ｃ）は従来例の側面図、第５図は粉末潤滑剤が現像
スリーブ表面を汚染した状態の説明図である。
８・・現像器 ９・・ドクターブレード１０・・現像ス
リーブ １４・・塗布用ハケ１５・・粉体を分散した揮
発性の液体 １６・・スポンジローラ １７・、・マス
キング部材１８・・スプレー ２０・・粉末潤滑剤。FIGS. 1(a), (b), (C), (d), and (e) are perspective views of embodiments of the present invention, and FIG. 2 is a diagram showing a case where a lubricant having the same polarity as the toner is used An explanatory view of the surface of the developing sleeve, FIG. 3 is a longitudinal sectional view of the image forming device, and FIGS. 4(a) and (b)
, (C) is a side view of the conventional example, and FIG. 5 is an explanatory diagram of a state in which the powder lubricant has contaminated the surface of the developing sleeve. 8. Developing device 9.. Doctor blade 10.. Developing sleeve 14.. Coating brush 15.. Volatile liquid in which powder is dispersed 16.. Sponge roller 17.. Masking member 18.. Spray 20.・Powder lubricant.
Claims (1)
レードに揮発性の液体に分散させた粉末潤滑剤を塗布し
、前記粉末潤滑剤はトナーと同極性に帯電する粉末潤滑
剤であることを特徴とする現像装置。1. A powder lubricant dispersed in a volatile liquid is applied to the doctor blade in the area where it comes into pressure contact with the developing sleeve, and the powder lubricant is charged to the same polarity as the toner. Developing device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1119946A JPH0786722B2 (en) | 1989-05-12 | 1989-05-12 | Development device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1119946A JPH0786722B2 (en) | 1989-05-12 | 1989-05-12 | Development device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH02298971A true JPH02298971A (en) | 1990-12-11 |
| JPH0786722B2 JPH0786722B2 (en) | 1995-09-20 |
Family
ID=14774093
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1119946A Expired - Lifetime JPH0786722B2 (en) | 1989-05-12 | 1989-05-12 | Development device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0786722B2 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2012128164A (en) * | 2010-12-15 | 2012-07-05 | Canon Inc | Developing device, process cartridge, and image forming apparatus |
| EP3106924A1 (en) | 2015-06-16 | 2016-12-21 | Canon Kabushiki Kaisha | Image forming apparatus |
| JP2018136456A (en) * | 2017-02-22 | 2018-08-30 | キヤノン株式会社 | Image forming apparatus |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61141453A (en) * | 1984-12-15 | 1986-06-28 | Canon Inc | Electrostatic charge image developing charge donor |
| JPS61144659A (en) * | 1984-12-19 | 1986-07-02 | Canon Inc | Electrostatic charge image developing charge donor |
| JPS6474566A (en) * | 1987-09-17 | 1989-03-20 | Fuji Xerox Co Ltd | Developing device |
-
1989
- 1989-05-12 JP JP1119946A patent/JPH0786722B2/en not_active Expired - Lifetime
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61141453A (en) * | 1984-12-15 | 1986-06-28 | Canon Inc | Electrostatic charge image developing charge donor |
| JPS61144659A (en) * | 1984-12-19 | 1986-07-02 | Canon Inc | Electrostatic charge image developing charge donor |
| JPS6474566A (en) * | 1987-09-17 | 1989-03-20 | Fuji Xerox Co Ltd | Developing device |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2012128164A (en) * | 2010-12-15 | 2012-07-05 | Canon Inc | Developing device, process cartridge, and image forming apparatus |
| EP3106924A1 (en) | 2015-06-16 | 2016-12-21 | Canon Kabushiki Kaisha | Image forming apparatus |
| US9804549B2 (en) | 2015-06-16 | 2017-10-31 | Canon Kabushiki Kaisha | Image forming apparatus |
| US10852175B2 (en) | 2015-06-16 | 2020-12-01 | Canon Kabushiki Kaisha | Image forming apparatus |
| JP2018136456A (en) * | 2017-02-22 | 2018-08-30 | キヤノン株式会社 | Image forming apparatus |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0786722B2 (en) | 1995-09-20 |
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