JP3066534B2 - Electrophotographic recording device - Google Patents
Electrophotographic recording deviceInfo
- Publication number
- JP3066534B2 JP3066534B2 JP2105935A JP10593590A JP3066534B2 JP 3066534 B2 JP3066534 B2 JP 3066534B2 JP 2105935 A JP2105935 A JP 2105935A JP 10593590 A JP10593590 A JP 10593590A JP 3066534 B2 JP3066534 B2 JP 3066534B2
- Authority
- JP
- Japan
- Prior art keywords
- toner
- photoreceptor
- image
- transfer
- image forming
- 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
- Developing For Electrophotography (AREA)
- Cleaning In Electrography (AREA)
- Control Or Security For Electrophotography (AREA)
- Dot-Matrix Printers And Others (AREA)
- Printers Or Recording Devices Using Electromagnetic And Radiation Means (AREA)
Description
【発明の詳細な説明】 （産業上の利用分野） 本発明は、感光体を用いた複写機，ファクシミリ装
置，プリンタ等の電子写真記録装置に関するものであ
る。Description: TECHNICAL FIELD The present invention relates to an electrophotographic recording apparatus such as a copying machine, a facsimile apparatus, and a printer using a photoreceptor.
（従来の技術） 本発明が適用され得るこの種の装置について、第１図
を参照しながら説明する。(Prior Art) This type of apparatus to which the present invention can be applied will be described with reference to FIG.
有機感光体（OPC）を塗布した基体をつなぎ目なしの
エンドレスベルト状にした感光体が開発されている。A photoconductor has been developed in which a substrate coated with an organic photoconductor (OPC) is formed into a seamless endless belt.
１は循環移動するこのシームレス感光体ベルト、２は
感光体ベルト１の少なくとも画像形成領域を予め均一に
帯電させる帯電チャージャ、３、は記録信号に基づいて
感光体ベルト１上に照射され、静電潜像を形成する光、
４は潜像にトナーを乗せて現像する現像器、５はカセッ
ト６内の記録紙を供給する給紙手段、７は感光体ベルト
１の移動にタイミングを合わせて記録紙を送るレジスト
ローラ、８は感光体ベルト１上のトナー像を記録紙に転
写する転写チャージャ、９は転写されたトナー像を記録
紙に定着させる定着装置、10は転写後の感光体ベルト１
上に残留するトナーをクリーニングブレード11で掻き落
として除去するクリーニング装置、12は残留電荷を除去
する除電ランプである。1 is a seamless photoreceptor belt that circulates, 2 is a charger for uniformly charging at least an image forming area of the photoreceptor belt 1 in advance, and 3 is irradiated on the photoreceptor belt 1 based on a recording signal, Light forming a latent image,
Reference numeral 4 denotes a developing device for applying toner to the latent image to develop the image. Reference numeral 5 denotes a paper feeding means for supplying recording paper in a cassette 6; Is a transfer charger for transferring the toner image on the photosensitive belt 1 to recording paper, 9 is a fixing device for fixing the transferred toner image on the recording paper, and 10 is the photosensitive belt 1 after the transfer.
A cleaning device that removes the toner remaining on the cleaning blade 11 by scraping it off, and a discharge lamp 12 that removes the residual charge.
このように構成された電子写真記録装置では、予め一
様に帯電させた感光体ベルト１上の画像形成領域に光書
込を行なって静電潜像を形成し、それにトナーを付着さ
せてトナー像を形成した後、そのトナー像を記録紙に転
写，定着させてハードコピーを得、転写後の感光体ベル
ト１は、残留トナー及び電荷を除去して、次の記録に備
える。In the electrophotographic recording apparatus configured as described above, optical writing is performed on an image forming area on the photoreceptor belt 1 that has been uniformly charged in advance to form an electrostatic latent image, and toner is attached to the latent image. After the image is formed, the toner image is transferred and fixed on a recording sheet to obtain a hard copy, and the photoreceptor belt 1 after the transfer removes residual toner and electric charge to prepare for the next recording.
（発明が解決しようとする課題） ところで、クリーニング装置10では、残留トナーを除
去するために、第３図に示したように、クリーニングブ
レード11をシームレスの感光体ベルト１に押しつけ、感
光体ベルト１の移動に伴って付着したトナー15を掻き落
とすが、繰返し使用していると、クリーニングブレード
11の先端が次第に摩耗する。(Problems to be Solved by the Invention) In the cleaning device 10, as shown in FIG. 3, the cleaning blade 11 is pressed against the seamless photoreceptor belt 1 to remove the residual toner. The toner 15 that has adhered is scraped off with the movement of the cleaning blade.
11 tips gradually wear.
特に、第４図に示したような不均一な摩耗が生じ、こ
のため、画像に縦黒スジが発生するという問題があっ
た。In particular, uneven wear as shown in FIG. 4 occurs, which causes a problem that vertical black stripes occur in the image.
これは、クリーニングブレード11と感光体ベルト１と
が作る鋭角状の空間部に、紙粉やシリカ等の研磨剤とな
り得る粉体16が部分的に溜り、これが感光体ベルト１の
移動でクリーニングブレード11を削るためであることが
分かった。This is because powder 16 that can be an abrasive such as paper powder or silica partially accumulates in an acute-angled space formed by the cleaning blade 11 and the photoreceptor belt 1. It turned out that it was to cut 11
本発明は、上記問題点を解決するもので、紙粉やシリ
カ等が溜り易いブレードと感光体ベルトの圧接部にトナ
ーを積極的に送り込んで潤滑剤として作用させ、ブレー
ドの摩耗を抑えるようにした電子写真記録装置を提供す
ることを目的とする。The present invention solves the above-mentioned problem, and actively sends toner to a pressure contact portion of a blade and a photoreceptor belt where paper powder, silica, and the like easily accumulate, and acts as a lubricant so as to suppress wear of the blade. It is an object of the present invention to provide an electrophotographic recording device.
（課題を解決するための手段） この目的を達成するために、本発明は、帯電手段によ
る帯電及び露光手段による露光が行われていない感光体
上の非画像形成領域（１つの画像形成領域とその次の画
像形成領域との間）に、現像手段のトナーを現像手段の
現像バイアスを変化させて感光体の幅方向に略帯状に付
着させた上、その略帯状のトナーを、転写手段による記
録紙への転写を行なわずに、クリーニング手段まで送る
ように制御する制御手段を設けたものである。(Means for Solving the Problems) In order to achieve this object, the present invention provides a non-image forming area (one image forming area and a non-image forming area) on a photoreceptor which is not charged by a charging unit and exposed by an exposing unit. Between the next image forming area), the toner of the developing unit is applied in a substantially band shape in the width direction of the photoconductor by changing the developing bias of the developing unit, and the substantially band-shaped toner is transferred by the transfer unit. Control means is provided for controlling the transfer to the cleaning means without performing the transfer to the recording paper.
（作用） 非画像形成領域に形成されたトナー像は、転写チャー
ジャにおいて転写を行なわず、残留トナーとしてクリー
ニング装置へ送られ、ブレードにより掻き落とされる。
そして、この回収されたトナーは潤滑剤として作用し、
紙粉やシリカ等が溜まり難くなり、その結果、クリーニ
ングブレードの摩耗が抑制され、縦黒スジの発生を長期
にわたって防止することができる。(Operation) The toner image formed in the non-image forming area is not transferred by the transfer charger, but is sent to the cleaning device as residual toner, and is scraped off by the blade.
The collected toner acts as a lubricant,
Paper powder, silica, and the like hardly accumulate, and as a result, abrasion of the cleaning blade is suppressed, and generation of vertical black stripes can be prevented for a long time.
（実施例） 以下、図面を参照しながら、本発明の実施例を詳細に
説明する。(Example) Hereinafter, an example of the present invention will be described in detail with reference to the drawings.
第１図は、本発明が適用され得る電子写真記録装置の
構成図で、本発明の電子写真記録装置と従来の電気写真
記録装置とは、構成が同じである。FIG. 1 is a configuration diagram of an electrophotographic recording apparatus to which the present invention can be applied. The electrophotographic recording apparatus of the present invention has the same configuration as a conventional electrophotographic recording apparatus.
このように構成された本発明の電子写真記録装置は、
感光体ベルト１の各ページに対応する画像形成領域ａ
（第２図参照）を帯電チャージャ２により一様に帯電さ
せた後、この画像形成領域ａに画像信号に基づいて光３
により静電潜像を形成し、この静電潜像に現像器４によ
りトナーを付着させてトナー像を形成する。The electrophotographic recording apparatus of the present invention configured as above is
Image forming area a corresponding to each page of photoreceptor belt 1
(See FIG. 2) is uniformly charged by the charging charger 2, and then the light 3 is applied to the image forming area a based on the image signal.
To form an electrostatic latent image, and a toner is adhered to the electrostatic latent image by the developing device 4 to form a toner image.
又、感光体ベルト１の各ページに対応する画像形成領
域ａと画像形成領域ａとの間の非画像形成領域ｂ（第２
図参照）、あるいは、最初のページの画像形成領域ａ前
の非画像形成領域ｂが現像器４の位置まできたときに現
像器４の現像バイアスを切り換えて、感光体ベルト１の
幅方向に延びた帯状のトナー像を非画像形成領域ｂに形
成する。In addition, a non-image forming area b (second image forming area) between the image forming area a and the image forming area a corresponding to each page of the photosensitive belt 1
Alternatively, when the non-image forming area b before the image forming area a of the first page reaches the position of the developing unit 4, the developing bias of the developing unit 4 is switched to extend in the width direction of the photosensitive belt 1. A belt-shaped toner image is formed in the non-image forming area b.
即ち、ポジ・ポジ方式ならば、現像バイアスを感光体
ベルト１の表面電位よりも低い電位に一時的に切り換
え、ネガ・ポジ方式ならば、表面電位よりも高い電位に
一時的に切り換えることにより、非画像形成領域ｂにト
ナー像を形成する。That is, in the case of the positive-positive system, the developing bias is temporarily switched to a potential lower than the surface potential of the photoreceptor belt 1, and in the case of the negative-positive system, the developing bias is temporarily switched to a potential higher than the surface potential. A toner image is formed in the non-image forming area b.
そして、各ページの画像形成領域ａに形成されたトナ
ー像は、転写チャージャ８によりカセット６から送り出
した記録紙に転写されるが、非画像形成領域ｂに形成さ
れた帯状のトナー像は記録紙に転写されずに、そのまま
クリーニング装置10へ送られ、画像形成領域ａに残留し
たトナーと非画像形成領域ｂのトナー像のトナーとは、
残留トナーとしてクリーニングブレード11により掻き落
とされる。The toner image formed in the image forming area a of each page is transferred by the transfer charger 8 onto the recording paper sent out from the cassette 6, while the belt-like toner image formed in the non-image forming area b is recorded on the recording paper. Is transferred to the cleaning device 10 as it is, and the toner remaining in the image forming area a and the toner of the toner image in the non-image forming area b are:
The residual toner is scraped off by the cleaning blade 11.
このように構成された本実施例では、紙粉の混入しな
いトナーが感光体ベルト１とクリーニングブレード11と
の圧接部に供給されて、このトナーが潤滑剤として作用
するので、紙粉やシリカ等が感光体ベルト１とクリーニ
ングブレード11との圧接部に溜まり難くなって、クリー
ニングブレード11は摩耗し難くなる。In the present embodiment configured as described above, the toner without paper dust is supplied to the pressure contact portion between the photoreceptor belt 1 and the cleaning blade 11, and this toner acts as a lubricant. Hardly accumulate in the pressure contact portion between the photosensitive belt 1 and the cleaning blade 11, and the cleaning blade 11 is hardly worn.
このような本実施例の動作は、電子写真記録装置の制
御部において、帯電部，露光部，現像部及び転写部等を
集中制御することにより、容易に実施し得る。The operation of this embodiment can be easily performed by centrally controlling the charging unit, the exposure unit, the developing unit, the transfer unit, and the like in the control unit of the electrophotographic recording apparatus.
なお、略帯状のトナー像は、各ページの画像形成領域
ａ間に必ず形成しなければならないというものではな
く、数ページおきに形成してもよく、あるいは、感光体
ベルト１の１回転毎でもよい。It should be noted that the substantially belt-shaped toner image does not necessarily have to be formed between the image forming areas a of each page, but may be formed every few pages, or even at every rotation of the photosensitive belt 1. Good.
又、形状も、１箇所に帯状１本とは限らず、破線や千
鳥状，複数本，また幅違い，さらには感光体ベルト１の
移動方向に必ずしも直角でなくてもよい。Further, the shape is not limited to one strip at one place, but may be a dashed line, a staggered shape, a plurality of strips, a difference in width, and not necessarily perpendicular to the moving direction of the photosensitive belt 1.
要は、感光体ベルト１とクリーニングブレード11との
圧接部に適当量のトナーを供給し、それを潤滑剤として
作用させるようにすることである。The point is that an appropriate amount of toner is supplied to the pressure contact portion between the photosensitive belt 1 and the cleaning blade 11 so that the toner acts as a lubricant.
（発明の効果） 以上説明したように、本発明によれば、感光体ベルト
とクリーニングブレードとの圧接部に適当量のトナーを
供給して、それを潤滑剤として作用させることにより、
紙粉やシリカ等が溜まり難くなり、その結果、クリーニ
ングブレードの摩耗が抑制されて、縦黒スジの発生を長
期にわたって防止することができる。(Effects of the Invention) As described above, according to the present invention, an appropriate amount of toner is supplied to the pressure contact portion between the photoreceptor belt and the cleaning blade, and the toner is caused to act as a lubricant.
Paper powder, silica, and the like hardly accumulate, and as a result, abrasion of the cleaning blade is suppressed, and generation of vertical black stripes can be prevented for a long time.
第１図は、本発明が適用され得る電子写真記録装置の構
成図、第２図は、本発明の一実施例の感光体ベルト上に
形成した帯状潜像を示す図、第３図は、従来例のクリー
ニング部の問題点を示す図、第４図は、クリーニングブ
レードの摩耗の状態を示す図である。 １……シームレス感光体ベルト、２……帯電チャージ
ャ、４……現像器、８……転写チャージャ、10……クリ
ーニング装置、11……クリーニングブレード、18a,18b
……帯状の潜像。FIG. 1 is a configuration diagram of an electrophotographic recording apparatus to which the present invention can be applied, FIG. 2 is a diagram showing a belt-like latent image formed on a photoreceptor belt of one embodiment of the present invention, and FIG. FIG. 4 is a diagram showing a problem of a conventional cleaning unit, and FIG. 4 is a diagram showing a state of wear of a cleaning blade. DESCRIPTION OF SYMBOLS 1 ... Seamless photosensitive belt, 2 ... Charging charger, 4 ... Developing device, 8 ... Transfer charger, 10 ... Cleaning device, 11 ... Cleaning blade, 18a, 18b
.... A belt-like latent image.
フロントページの続き (56)参考文献 特開 昭64−59287（ＪＰ，Ａ) 特開 昭58−108569（ＪＰ，Ａ) 特開 昭63−303384（ＪＰ，Ａ) 特開 平２−148084（ＪＰ，Ａ) 特開 昭60−51875（ＪＰ，Ａ) (58)調査した分野(Int.Cl.7，ＤＢ名) G03G 21/00 370 - 540 G03G 21/14 G03G 21/10 - 21/12 Continuation of the front page (56) References JP-A-64-59287 (JP, A) JP-A-58-108569 (JP, A) JP-A-63-303384 (JP, A) JP-A-2-148084 (JP, A) , A) JP-A-60-51875 (JP, A) (58) Fields investigated (Int. Cl. 7 , DB name) G03G 21/00 370-540 G03G 21/14 G03G 21/10-21/12
Claims (1)
する帯電手段と、その帯電領域に光を照射して静電潜像
を形成する露光手段と、前記静電潜像にトナーを転移さ
せる現像手段と、トナー像を記録紙に転写する転写手段
と、転写後の感光体のトナーを除去するクリーニング手
段とを備えた電子写真記録装置において、 前記帯電手段による帯電及び前記露光手段による露光が
行われていない前記感光体上の非画像形成領域に、前記
現像手段のトナーを該現像手段の現像バイアスを変化さ
せて前記感光体の幅方向に略帯状に付着させた上、前記
略帯状のトナーを、前記転写手段による前記記録紙への
転写を行なわずに、前記クリーニング手段まで送るよう
に制御する制御手段を設けたことを特徴とする電子写真
記録装置。A charging means for forming a uniform charged area on a rotating photoreceptor; an exposing means for irradiating the charged area with light to form an electrostatic latent image; An electrophotographic recording apparatus comprising: a developing unit for transferring a toner image; a transfer unit for transferring a toner image to recording paper; and a cleaning unit for removing toner on the photoreceptor after the transfer. On the non-image forming area on the photoreceptor where the exposure by the photoreceptor is not performed, the toner of the developing unit is attached in a substantially band shape in the width direction of the photoreceptor by changing the developing bias of the developing unit, and An electrophotographic recording apparatus, further comprising control means for controlling the transfer of the substantially belt-shaped toner to the cleaning means without transferring the toner to the recording paper by the transfer means.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2105935A JP3066534B2 (en) | 1990-04-21 | 1990-04-21 | Electrophotographic recording device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2105935A JP3066534B2 (en) | 1990-04-21 | 1990-04-21 | Electrophotographic recording device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH045679A JPH045679A (en) | 1992-01-09 |
| JP3066534B2 true JP3066534B2 (en) | 2000-07-17 |
Family
ID=14420710
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2105935A Expired - Lifetime JP3066534B2 (en) | 1990-04-21 | 1990-04-21 | Electrophotographic recording device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3066534B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3128376A1 (en) * | 2015-08-07 | 2017-02-08 | Konica Minolta, Inc. | Image forming apparatus, image forming system and control method |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3835503B2 (en) * | 1998-10-07 | 2006-10-18 | 富士ゼロックス株式会社 | Image forming apparatus |
| JP2003241570A (en) | 2001-12-11 | 2003-08-29 | Ricoh Co Ltd | Image forming apparatus |
| JP2006276158A (en) | 2005-03-28 | 2006-10-12 | Fuji Xerox Co Ltd | Process cartridge, image forming device, cleaning method, and cleaning apparatus |
| JP6039226B2 (en) * | 2011-06-15 | 2016-12-07 | キヤノン株式会社 | Image forming apparatus |
| JP6288031B2 (en) | 2015-10-01 | 2018-03-07 | コニカミノルタ株式会社 | Fixing apparatus and image forming apparatus |
-
1990
- 1990-04-21 JP JP2105935A patent/JP3066534B2/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3128376A1 (en) * | 2015-08-07 | 2017-02-08 | Konica Minolta, Inc. | Image forming apparatus, image forming system and control method |
| JP2017037126A (en) * | 2015-08-07 | 2017-02-16 | コニカミノルタ株式会社 | Image forming apparatus, image forming system, and control method |
| US9798281B2 (en) | 2015-08-07 | 2017-10-24 | Konica Minolta, Inc. | Image forming apparatus, image forming system and control method |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH045679A (en) | 1992-01-09 |
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