JPH03233580A - Developing roller - Google Patents
Developing rollerInfo
- Publication number
- JPH03233580A JPH03233580A JP2030563A JP3056390A JPH03233580A JP H03233580 A JPH03233580 A JP H03233580A JP 2030563 A JP2030563 A JP 2030563A JP 3056390 A JP3056390 A JP 3056390A JP H03233580 A JPH03233580 A JP H03233580A
- Authority
- JP
- Japan
- Prior art keywords
- developing roller
- developing
- toner
- support
- roller
- 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
- 239000010410 layer Substances 0.000 claims abstract description 18
- 229910021417 amorphous silicon Inorganic materials 0.000 claims abstract description 16
- 239000011247 coating layer Substances 0.000 claims abstract description 12
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 4
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims description 4
- 239000001257 hydrogen Substances 0.000 claims description 4
- 229910052739 hydrogen Inorganic materials 0.000 claims description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 2
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 2
- 229910052799 carbon Inorganic materials 0.000 claims description 2
- 229910052736 halogen Inorganic materials 0.000 claims description 2
- 150000002367 halogens Chemical class 0.000 claims description 2
- 229910052757 nitrogen Inorganic materials 0.000 claims description 2
- 229910052760 oxygen Inorganic materials 0.000 claims description 2
- 239000001301 oxygen Substances 0.000 claims description 2
- 229910052710 silicon Inorganic materials 0.000 claims description 2
- 239000010703 silicon Substances 0.000 claims description 2
- 229910001220 stainless steel Inorganic materials 0.000 abstract description 4
- 239000010935 stainless steel Substances 0.000 abstract description 4
- JOYRKODLDBILNP-UHFFFAOYSA-N Ethyl urethane Chemical compound CCOC(N)=O JOYRKODLDBILNP-UHFFFAOYSA-N 0.000 abstract description 2
- 238000007786 electrostatic charging Methods 0.000 abstract 2
- 238000011084 recovery Methods 0.000 abstract 1
- 238000000034 method Methods 0.000 description 9
- 239000002345 surface coating layer Substances 0.000 description 5
- 238000005268 plasma chemical vapour deposition Methods 0.000 description 3
- 239000007789 gas Substances 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
- 101150017268 secM gene Proteins 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 239000006247 magnetic powder Substances 0.000 description 1
- 108091008695 photoreceptors Proteins 0.000 description 1
- 238000002294 plasma sputter deposition Methods 0.000 description 1
- 238000005488 sandblasting Methods 0.000 description 1
Landscapes
- Dry Development In Electrophotography (AREA)
Abstract
Description
【発明の詳細な説明】
［発明の目的］
（産業上の利用分野）
本発明は、電子複写機等の画像形成装置に用いられる現
像ローラに関する。DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] (Industrial Application Field) The present invention relates to a developing roller used in an image forming apparatus such as an electronic copying machine.
（従来の技術）
一般に電子写真複写方式においては、まず光半導体を用
いた感光体にコロナ放電等により電位をのせ（帯電）、
その上に光学レンズを介して原稿像を結像させるかある
いはレーザ光による光信号を当てること（露光）によっ
て照射された光に応じた電位降下を生せしめ、所謂静電
潜像を形成させる。次に帯電させたトナーを接触あるい
は近接させることにより静電潜像を可視化させ（現像）
さらにこのトナーを電界の力によって紙上に転写しく転
写）、熱、圧力、光等のエネルギーを与えて定着させる
（定着）というプロセスによって複写画像が得られる。(Prior Art) Generally, in an electrophotographic copying method, first, a potential is applied (charged) to a photoconductor using a photosemiconductor by corona discharge, etc.
A document image is formed thereon through an optical lens, or an optical signal from a laser beam is applied thereto (exposure) to cause a potential drop in accordance with the irradiated light, thereby forming a so-called electrostatic latent image. Next, the electrostatic latent image is made visible (development) by bringing the charged toner into contact with or in close proximity to it.
Further, a copy image is obtained by a process of transferring this toner onto paper using the force of an electric field (transfer) and fixing it by applying energy such as heat, pressure, light, etc. (fixing).
現像プロセスとしては、従来よりトナー及びキャリアを
用いる二成分現像法と、磁性トナーのみを用いる磁性−
成分現像法とが広く用いられてきた。そして近年、装置
の小型化、コストダウン及び画像特性の向上を図るため
、非磁性トナーのみを用いる非磁性−成分現像法が検討
されている。Conventional development processes include a two-component development method that uses toner and carrier, and a magnetic development method that uses only magnetic toner.
The component development method has been widely used. In recent years, non-magnetic component development methods using only non-magnetic toner have been studied in order to reduce the size of devices, reduce costs, and improve image characteristics.
この非磁性−成分現像法は、現像装置の軽量化が可能な
上、磁性粉を用いないため、感光体ドラムや転写ローラ
が傷付きにくいという利点を有する。This non-magnetic component development method has the advantage that it is possible to reduce the weight of the developing device, and because it does not use magnetic powder, the photosensitive drum and transfer roller are less likely to be damaged.
しかしながら、この現像法は現像ローラにかかる現像バ
イアスのマージンが小さいという短所を有する。However, this developing method has the disadvantage that the margin of the developing bias applied to the developing roller is small.
この現像バイアスは、用いられるトナー及び現像ローラ
等によって異なるが、例えばステンレス製のスリーブ表
面に＃６００のサンドブラスト加工を施して得られた現
像ローラを使用した現像装置においては、１．４ｋＶ程
度で好適な現像が行われ、１．６ｋＶ以上に上げると放
電が発生し、画像に放電パターンが現われ、逆に１．２
ｋＶ以下に下げると画像濃度が低くなる。This developing bias varies depending on the toner and developing roller used, but for example, in a developing device using a developing roller obtained by sandblasting #600 on the surface of a stainless steel sleeve, a value of about 1.4 kV is suitable. development is performed, and when the voltage is raised to 1.6 kV or higher, a discharge occurs and a discharge pattern appears on the image.
When the voltage is lowered to below kV, the image density becomes lower.
（発明が解決しようとする課題）
本発明は、上記事情に鑑みてなされたもので、現像バイ
ヤスのマージンが大きく、良好な画像が得られる現像ロ
ーラを提供することを目的とする。(Problems to be Solved by the Invention) The present invention has been made in view of the above-mentioned circumstances, and an object of the present invention is to provide a developing roller that has a large development bias margin and can produce good images.
［発明の構成］
（課題を解決するための手段）
本発明の現像ローラは、支持体と、・前記支持体上に形
成され、非晶質シリコンからなる層を少なくとも一層含
む被覆層とを具備することを特徴とする。[Structure of the Invention] (Means for Solving the Problems) The developing roller of the present invention includes: a support; and a coating layer formed on the support and containing at least one layer made of amorphous silicon. It is characterized by
また、本発明の現像ローラは、円筒状支持体と、この支
持体上に形成され、非晶質シリコン層と、炭素、窒素及
び酸素からなる群から選択される少なくとも一種の元素
とシリコンからなる層とを含む積層体を有する被覆層と
を具備することを特徴とする。The developing roller of the present invention includes a cylindrical support, an amorphous silicon layer formed on the support, and at least one element selected from the group consisting of carbon, nitrogen, and oxygen, and silicon. and a covering layer having a laminate including a layer.
さらに、本発明の現像ローラは、支持体と、前記支持体
上に形成され、非晶質シリコンを少なくとも一層含む被
覆層とを具備する現像ローラであって、前記非晶質シリ
コン層は、水素及びハロゲンを含有することを特徴とす
る。Furthermore, the developing roller of the present invention is a developing roller comprising a support and a coating layer formed on the support and containing at least one layer of amorphous silicon, wherein the amorphous silicon layer contains hydrogen. and a halogen.
前記被覆層は、厚さ０．５〜５０μｍであることが好ま
しく、また、前記被覆層は、水素及びノ１０ゲンからな
る群から選択された少なくとも一種の元素を含有する非
晶質シリコン層を含むものとすることができる。The coating layer preferably has a thickness of 0.5 to 50 μm, and the coating layer includes an amorphous silicon layer containing at least one element selected from the group consisting of hydrogen and hydrogen. may be included.
本発明にかかる現像ローラの被覆層は、例えばプラズマ
ＣＶＤまたはスパッタリングにより成膜することができ
る。The coating layer of the developing roller according to the present invention can be formed by, for example, plasma CVD or sputtering.
（作用）
本発明によれば、支持体上に非晶質シリコンからなる層
を少なくとも一層含む被覆層を形成することにより、表
面の比抵抗が１０３〜１０１３Ω・（１の現像ローラが
得られる。比抵抗が１０３〜１０１３Ω・（至）である
と、バイアス電圧が広い範囲で放電を起こさずに良好な
画像が得られる。(Function) According to the present invention, a developing roller having a surface resistivity of 10 3 to 10 13 Ω·(1) is obtained by forming a coating layer including at least one layer made of amorphous silicon on the support. When the specific resistance is 10 3 to 10 13 Ω·(up to), good images can be obtained without causing discharge over a wide bias voltage range.
（実施例）
以下、本発明の現像ローラを、第１図に示すような非磁
性−成分現像機に組み入れた例について説明する。(Example) An example in which the developing roller of the present invention is incorporated into a non-magnetic component developing machine as shown in FIG. 1 will be described below.
第１図に示すように、この現像機は、現像ローラ１と、
この現像ローラ１に接する回収ブレード５及び帯電ブレ
ード４と、この帯電ブレード４を支えるブレードホルダ
ー１０と、このブレードホルダー１０上に設けられたブ
レード圧調整ネジ９およびステイ８と、現像ローラ１に
トナーＴを供給するウレタンスポンジ製のトナー供給ロ
ーラ２と、トナー容器中のトナーＴをトナー供給ローラ
へ搬送するステンレス製のトナー搬送ローラ３と、この
現像機のサイドフレーム７とを具備する。現像ローラ１
は、支持体と、支持体上に非晶質シリコンからなる層を
少なくとも一層含む被覆層とから構成されている。As shown in FIG. 1, this developing machine includes a developing roller 1,
The collection blade 5 and the charging blade 4 that are in contact with the developing roller 1, the blade holder 10 that supports the charging blade 4, the blade pressure adjustment screw 9 and the stay 8 provided on the blade holder 10, and the toner The developing machine includes a toner supply roller 2 made of urethane sponge that supplies toner T, a toner conveyance roller 3 made of stainless steel that conveys toner T in a toner container to the toner supply roller, and a side frame 7 of this developing machine. Developing roller 1
is composed of a support and a coating layer on the support, which includes at least one layer made of amorphous silicon.
この現像機の外側にはＯＰＣ感光体ローラ６が現像ロー
ラ１と例えば約０．２５ｍｍの間隔Ｇをおいて対向して
設置されている。トナー容器中のトナーＴは、トナー搬
送ローラ３によってトナー供給ローラ２に運ばれ、運ば
れたトナーＴは現像ローラ１とトナー搬送ローラ３との
間で薄層化されると共に帯電する。現像ローラには、−
２５０Ｖ。On the outside of this developing machine, an OPC photosensitive roller 6 is installed facing the developing roller 1 with a gap G of about 0.25 mm, for example. The toner T in the toner container is transported to the toner supply roller 2 by the toner transport roller 3, and the transported toner T is made into a thin layer between the developing roller 1 and the toner transport roller 3 and is charged. The developing roller has -
250V.
ＡＣｌ、４ｋＶのバイアス電圧がかかつており、トナー
Ｔは感光体６の露光部分に飛翔する。飛翔せずに残った
トナーは、前記回収ブレード５を通って内部に回収され
、トナー供給ローラ２によって掻き落とされる。掻き落
とされたトナーは、現像機の下部を通ってトナー容器に
戻る。ACl and a bias voltage of 4 kV are applied, and the toner T flies to the exposed portion of the photoreceptor 6. The remaining toner that has not flown away is collected inside through the collection blade 5 and scraped off by the toner supply roller 2. The scraped toner returns to the toner container through the lower part of the developing machine.
以下、以上説明した現像機を用いた実施例を示し、本発
明を具体的に説明する。Hereinafter, the present invention will be specifically explained by showing examples using the developing machine described above.
実施例１
直径２０ＩＩＩ１１、長さ２４０ｍ嘗のステンレス（Ｓ
ＵＳ３０３）製の支持円筒にプラズマＣＶＤ法を用いて
、表面被覆層を成膜した。使用ガスとしてＳｉＨ４２０
０ｓｅｃＭを用い、圧力２００Ｐ ａ ｓ印加電力１．
０ｋＷで１２０分間成膜することにより、膜厚４．５μ
ｍ１比抵抗２゜５×１０９Ω・（至）の非晶質シリコン
膜からなる表面被覆層を有する現像ローラを得た。この
現像ローラを第１図に示す非磁性−成分現像機に組み込
み、これをフルカラープリンタに装填し、転写画像をと
ったところ、現像バイヤスが０．５〜２，５ｋＷの広い
範囲にわたって、放電が発生せず、良好な画像が得られ
た。Example 1 Stainless steel (S) with diameter 20III11 and length 240m
A surface coating layer was formed on a support cylinder made of US303) using a plasma CVD method. SiH420 as gas used
Using 0 secM, pressure 200 Pa s applied power 1.
By forming the film at 0kW for 120 minutes, the film thickness was 4.5μ.
A developing roller having a surface coating layer made of an amorphous silicon film with m1 specific resistance of 2°5×10 9 Ω·(up) was obtained. This developing roller was assembled into the non-magnetic component developing machine shown in Fig. 1, loaded into a full color printer, and a transferred image was taken. This did not occur and a good image was obtained.
実施例２
直径２０ｍｍ、長さ２４０ ｍ＋ｓの５ＵＳ３０３製の
支持円筒にプラズマＣＶＤ法を用いて、表面被覆層を成
膜した。使用ガスとしてＳｉＨ４２００ｓｅｃＭ及びＳ
ｉ Ｆ４ １５ｓｅｃＭを用い、圧力２００Ｐａ、印
加電力１．ＯｋＷで１２０分間成膜することにより、膜
厚４．５μｍ１比抵抗４．０×１０９Ω・印の非晶質シ
リコン膜からなる表面被覆層を６する現像ローラを得た
。この現像ローラを第１図に示す非磁性−成分現像機に
組み込み、これをフルカラープリンタに装填し、転写画
像をとったところ、現像バイヤスが０．５〜２．５ｋＷ
の広い範囲にわたって、放電が発生せず、良好な画像が
得られた。Example 2 A surface coating layer was formed on a support cylinder made of 5US303 with a diameter of 20 mm and a length of 240 m+s using a plasma CVD method. SiH4200secM and S used gas
i F4 15 secM, pressure 200 Pa, applied power 1. By forming the film at OKW for 120 minutes, a developing roller having a surface coating layer made of an amorphous silicon film having a film thickness of 4.5 μm and a specific resistance of 4.0×10 9 Ω·mark was obtained. This developing roller was assembled into the non-magnetic component developing machine shown in Figure 1, loaded into a full color printer, and a transferred image was taken, and the developing bias was 0.5 to 2.5 kW.
No discharge occurred over a wide range, and good images were obtained.
［発明の効果］
以上説明したように、本発明の現像ローラは、表面被覆
層に非晶質シリコン層を含んでいるため、１０３〜１０
１３Ω・■の比抵抗を有することから、このような本発
明の現像ローラを用いた画像形成装置によると現像バイ
ヤスのマージンが大きく、良好な画像が得られる。[Effects of the Invention] As explained above, since the developing roller of the present invention includes the amorphous silicon layer in the surface coating layer,
Since it has a specific resistance of 13 Ω·■, an image forming apparatus using the developing roller of the present invention has a large development bias margin and can produce good images.
第１図は、本発明の現像ローラを用いた現像装置の一例
を示す図である。
１・・・現像ローラ、２・・・トナー供給ローラ、６・
・・感光体ドラムFIG. 1 is a diagram showing an example of a developing device using the developing roller of the present invention. 1...Developing roller, 2...Toner supply roller, 6...
・Photoconductor drum
Claims (3)
質シリコン層を含む被覆層とを具備することを特徴とす
る現像ローラ。(1) A developing roller comprising a cylindrical support and a coating layer formed on the support and including an amorphous silicon layer.
質シリコン層と、炭素、窒素及び酸素からなる群から選
択される少なくとも一種の元素とシリコンからなる層と
を含む積層体を有する被覆層とを具備することを特徴と
する請求項１に記載の現像ローラ。(2) A laminate including a cylindrical support, an amorphous silicon layer formed on the support, and a layer made of silicon and at least one element selected from the group consisting of carbon, nitrogen, and oxygen. 2. The developing roller according to claim 1, further comprising a coating layer having:
コンを少なくとも一層含む被覆層とを具備する現像ロー
ラであって、前記非晶質シリコン層は、水素及びハロゲ
ンを含有することを特徴とする現像ローラ。(3) A developing roller comprising a support and a coating layer formed on the support and containing at least one layer of amorphous silicon, wherein the amorphous silicon layer contains hydrogen and halogen. A developing roller featuring:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2030563A JPH03233580A (en) | 1990-02-09 | 1990-02-09 | Developing roller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2030563A JPH03233580A (en) | 1990-02-09 | 1990-02-09 | Developing roller |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH03233580A true JPH03233580A (en) | 1991-10-17 |
Family
ID=12307287
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2030563A Pending JPH03233580A (en) | 1990-02-09 | 1990-02-09 | Developing roller |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH03233580A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2008136291A1 (en) * | 2007-04-27 | 2008-11-13 | Canon Kabushiki Kaisha | Developing roller, electrophotographic process cartridge, and electrophotographic apparatus for image formation |
| JP2010049172A (en) * | 2008-08-25 | 2010-03-04 | Canon Inc | Electrophotographic image forming apparatus |
| JP2010097049A (en) * | 2008-10-17 | 2010-04-30 | Canon Inc | Electrophotographic image forming apparatus |
-
1990
- 1990-02-09 JP JP2030563A patent/JPH03233580A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2008136291A1 (en) * | 2007-04-27 | 2008-11-13 | Canon Kabushiki Kaisha | Developing roller, electrophotographic process cartridge, and electrophotographic apparatus for image formation |
| US7627276B2 (en) | 2007-04-27 | 2009-12-01 | Canon Kabushiki Kaisha | Developing roller, electrophotographic process cartridge, and electrophotographic image forming apparatus |
| JP2010049172A (en) * | 2008-08-25 | 2010-03-04 | Canon Inc | Electrophotographic image forming apparatus |
| JP2010097049A (en) * | 2008-10-17 | 2010-04-30 | Canon Inc | Electrophotographic image forming apparatus |
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