JPH03255465A - Image forming device - Google Patents
Image forming deviceInfo
- Publication number
- JPH03255465A JPH03255465A JP2052785A JP5278590A JPH03255465A JP H03255465 A JPH03255465 A JP H03255465A JP 2052785 A JP2052785 A JP 2052785A JP 5278590 A JP5278590 A JP 5278590A JP H03255465 A JPH03255465 A JP H03255465A
- Authority
- JP
- Japan
- Prior art keywords
- image forming
- measuring
- photoreceptor
- life
- 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
- 238000007600 charging Methods 0.000 claims abstract description 23
- 108091008695 photoreceptors Proteins 0.000 claims description 26
- 238000000034 method Methods 0.000 abstract description 9
- 238000007786 electrostatic charging Methods 0.000 abstract 2
- 230000005855 radiation Effects 0.000 abstract 1
- 230000015572 biosynthetic process Effects 0.000 description 5
- 238000005755 formation reaction Methods 0.000 description 5
- 238000004140 cleaning Methods 0.000 description 3
- 238000010792 warming Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
Landscapes
- Accessory Devices And Overall Control Thereof (AREA)
- Counters In Electrophotography And Two-Sided Copying (AREA)
- Discharging, Photosensitive Material Shape In Electrophotography (AREA)
- Electrostatic Charge, Transfer And Separation In Electrography (AREA)
- Control Or Security For Electrophotography (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、電子写真方式を用いた画像形成装置に関する
ものである。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an image forming apparatus using an electrophotographic method.
一般に、電子写真式の画像形成装置は、主にし一ザ光源
を用いて高い集光性のある光学系と事務用複写機に使用
する電子写真記録方式とを組み合わせてなる記録部を備
えたものが知られている。In general, an electrophotographic image forming apparatus is equipped with a recording section that combines an optical system with high light-convergence using a single laser light source and an electrophotographic recording method used in office copying machines. It has been known.
従来、この種の画像形成装置は、感光体の表面を帯電さ
せる帯電手段と、この帯電手段によって帯電した感光体
の表面に静電潜像を形成する露光手段と、この露光手段
によって形成された静電潜像にトナーを静電気力で付着
させる現像手段と、この現像手段によるトナー像を被転
写材としての用紙に転写する転写手段と、感光体の表面
に残留したトナーを取り除くクリーニング手段と、トナ
ー像を用紙に定着させる定着手段とを備えたものが採用
されている。Conventionally, this type of image forming apparatus includes a charging means for charging the surface of a photoreceptor, an exposure means for forming an electrostatic latent image on the surface of the photoreceptor charged by the charging means, and an electrostatic latent image formed by the exposure means. a developing means for attaching toner to the electrostatic latent image by electrostatic force; a transfer means for transferring the toner image formed by the developing means onto paper as a transfer material; and a cleaning means for removing toner remaining on the surface of the photoreceptor; A device equipped with a fixing means for fixing the toner image on the paper is employed.
ところで、この種の画像形成装置においては、画像形成
の回数に比例する感光体の回転数を計測手段によって機
械的に計測し、この計測値を表示することによりプロセ
スキットの寿命を管理することが行われている。By the way, in this type of image forming apparatus, it is possible to mechanically measure the rotational speed of the photoreceptor, which is proportional to the number of image formations, using a measuring means, and to display this measured value to manage the life of the process kit. It is being done.
〔発明が解決しようとする課題）
しかるに、従来の画像形成装置においては、感光体の回
転が帯電手段等のＯＮ・ＯＦＦとは別個に行われるもの
であるため、例えば形成装置本体のウオーミングアンプ
時のように画像形成が行われない時にも感光体が回転し
て画像形成装置本体の寿命を正確に管理することができ
ず、装置全体の寿命管理に対する信頼性が低下するとい
う問題があった。[Problems to be Solved by the Invention] However, in conventional image forming apparatuses, the rotation of the photoreceptor is performed separately from the ON/OFF operation of charging means, etc., and therefore, for example, during the warming amplifier of the forming apparatus itself, There is a problem in that the photoreceptor rotates even when image formation is not being performed, making it impossible to accurately manage the lifespan of the image forming apparatus main body, and reducing reliability in managing the lifespan of the entire apparatus.
本発明はこのような事情に鑑みてなされたもので、画像
形成装置本体の寿命を正確に管理することができ、もっ
て装置全体の寿命管理に対する信頼性を高めることがで
きる画像形成装置を提供するものである。The present invention has been made in view of the above circumstances, and an object of the present invention is to provide an image forming apparatus that can accurately manage the lifespan of the image forming apparatus main body, thereby increasing the reliability of lifespan management of the entire apparatus. It is something.
本発明に係る画像形成装置は、回転可能な感光体の表面
を帯電手段によって帯電させ、この帯電面に露光手段に
よって静電潜像を形成し、この静電潜像を現像手段によ
って現像してから被転写材に転写する画像形成装置であ
って、感光体の回転数を計測する計測手段と、この計測
手段による回転数を記憶するメモリー回路および計測手
段を帯電手段のＯＮ状態においてスイッチ○Ｎとするス
イッチ回路を有する制御手段とを付設したものである。The image forming apparatus according to the present invention charges the surface of a rotatable photoreceptor with a charging means, forms an electrostatic latent image on this charged surface with an exposing means, and develops this electrostatic latent image with a developing means. An image forming apparatus that transfers images from a photoreceptor to a transfer material, which includes a measuring means for measuring the number of rotations of a photoreceptor, a memory circuit for storing the number of revolutions by this measuring means, and a switch ○N when a charging means is in an ON state. A control means having a switch circuit is attached thereto.
本発明においては、帯電手段のＯＮ時に計測手段によっ
て感光体の回転数を計測することができる。In the present invention, the number of rotations of the photoreceptor can be measured by the measuring means when the charging means is turned on.
以下、本発明の構成等を図に示す実施例によって詳細に
説明する。EMBODIMENT OF THE INVENTION Hereinafter, the structure etc. of this invention will be explained in detail by the Example shown in the figure.
図は本発明に係る画像形成装置を示す断面図である。同
図において、符号１で示すものは回転可能な感光体２の
表面を帯電させる帯電手段、３はこの帯電手段１によっ
て帯電した感光体２の表面に静電潜像を形成する露光手
段、４はこの露光手段３によって形成された静電潜像に
トナーを静電気力で付着させる現像手段、５はこの現像
手段４によるトナー像を被転写材としての用紙（図示せ
ず）に転写する転写手段、７はこの転写手段５によって
用紙（図示せず）に転写されずに感光体２の表面に残留
したトナーを取り除くクリーニング手段、８は用紙（図
示せず）にトナー像を定着させる定着手段である。また
、９は第１の制御手段（図示せず）を有する着脱用のプ
ロセスキット、１０は光照射手段、１１および１２は用
紙供給ローラと用紙排出ローラ、１３および１４は用紙
ガイド、１５はスタフ力である。なお、前記帯電手段ｌ
、前記露光手段３．前記現像手段４．前記転写手段５お
よび前記光照射手段１０は、前記第１の制御手段（図示
せず）によって画像形成のプロセスに伴い０Ｎ−ＯＦＦ
される。１６は感光体２の回転数を計測する計測手段、
１７はこの計測手段１６による回転数を記憶するメモリ
ー回路（図示せず）および前記計測手段１６を前記帯電
手段１のＯＮ状態においてスイッチＯＮとするスイッチ
回路（図示せず）を有する第２の制御手段である。The figure is a sectional view showing an image forming apparatus according to the present invention. In the figure, reference numeral 1 denotes charging means for charging the surface of a rotatable photoreceptor 2, 3 an exposure means for forming an electrostatic latent image on the surface of the photoreceptor 2 charged by the charging means 1, and 4 Reference numeral 5 denotes a developing means for attaching toner to the electrostatic latent image formed by the exposure means 3 using electrostatic force, and 5 a transfer means for transferring the toner image produced by the developing means 4 onto paper (not shown) as a transfer material. , 7 is a cleaning means for removing toner remaining on the surface of the photoreceptor 2 without being transferred to the paper (not shown) by the transfer means 5, and 8 is a fixing means for fixing the toner image on the paper (not shown). be. Reference numeral 9 denotes an attachment/detachment process kit having a first control means (not shown), 10 a light irradiation means, 11 and 12 a paper supply roller and a paper discharge roller, 13 and 14 a paper guide, and 15 a staff member. It is power. Note that the charging means l
, the exposure means 3. The developing means 4. The transfer means 5 and the light irradiation means 10 are turned ON-OFF during the image forming process by the first control means (not shown).
be done. 16 is a measuring means for measuring the number of rotations of the photoreceptor 2;
17 is a second control having a memory circuit (not shown) for storing the number of rotations by the measuring means 16 and a switch circuit (not shown) for turning on the measuring means 16 when the charging means 1 is ON. It is a means.
このように構成された画像形成装置においては、帯電手
段１のＯＮ時に計測手段１６によって感光体２の回転数
を計測することができる。In the image forming apparatus configured in this manner, the number of rotations of the photoreceptor 2 can be measured by the measuring means 16 when the charging means 1 is turned on.
したがって、本実施例においては、例えば形成装置本体
のウオーミングアツプ時のように画像形成が行われない
時には計測手段１６が作動しないから、画像形成装置本
体の寿命を正確に管理することができる。すなわち、帯
電手段１のＯＮ時に感光体２の回転数を計測し、この回
転数を第２の制御手段１７のメモリー回路（図示せず）
によって記憶し、この値とプロセスキット９の寿命とす
る回転数とを比較し、第１の制御手段１７の表示部（図
示せず）によってユーザに知らせる。Therefore, in this embodiment, since the measuring means 16 does not operate when image formation is not performed, such as during warming up of the image forming apparatus main body, the life span of the image forming apparatus main body can be accurately managed. That is, when the charging means 1 is turned on, the number of revolutions of the photoreceptor 2 is measured, and this number of revolutions is stored in a memory circuit (not shown) of the second control means 17.
This value is compared with the rotational speed that is considered to be the life span of the process kit 9, and the user is notified of this value through a display section (not shown) of the first control means 17.
なお、本発明においては、プロセスキット９以外の槽底
部品等の交換時期を感光体２の回転数に基づいて定めて
おけば、この部品の交換時期も検知することができる。In the present invention, if the time to replace tank bottom parts and the like other than the process kit 9 is determined based on the rotational speed of the photoreceptor 2, the time to replace these parts can also be detected.
因に、本発明における画像形成は、感光体２の矢印方向
の回転に伴い、■光照射手段１０による電位喪失、■帯
電手段１による感光体２の帯電。Incidentally, image formation in the present invention involves: (1) loss of potential by the light irradiation means 10; and (2) charging of the photoreceptor 2 by the charging means 1 as the photoreceptor 2 rotates in the direction of the arrow.
■露光手段３による静電潜像の形成、■現像手段４によ
る静電潜像の現像、■転写手段５によるトナーの用紙（
図示せず）への転写、■定着手段８によるトナー像の定
着５■クリ一ニング手段７による感光体２からの残留ト
ナー除去の手順を経て行われる。■ Formation of an electrostatic latent image by the exposure means 3; ■ Development of the electrostatic latent image by the developing means 4; ■ Applying toner to paper by the transfer means 5 (
1) fixing of the toner image by the fixing means 8; 5) removal of residual toner from the photoreceptor 2 by the cleaning means 7.
以上説明したように本発明によれば、回転可能な感光体
の表面を帯電手段によって帯電させ、この帯電面に露光
手段によって静電潜像を形威し、この静ｉＩｔ潜像を現
像手段によって現像してから被転写材に転写する画像形
成装置であって、感光体の回転数を計測する計測手段と
、この計測手段による回転数を記憶するメモリー回路お
よび計測手段を帯電手段のＯＮ状態においてスイッチＯ
Ｎとするスイッチ回路を有する制御手段とを付設したの
で、帯電手段のＯＮ時に計測手段によって感光体の回転
数を計測することができる。したがって、画像形成装置
本体の寿命を正確に管理することができるから、装置全
体の寿命管理に対する信頼性を高めることができる。As explained above, according to the present invention, the surface of the rotatable photoreceptor is charged by the charging means, an electrostatic latent image is formed on the charged surface by the exposing means, and this static iIt latent image is formed by the developing means. An image forming apparatus that develops and then transfers it to a transfer material, which includes a measuring means for measuring the number of rotations of a photoreceptor, a memory circuit for storing the number of revolutions by this measuring means, and a measuring means when a charging means is in an ON state. switch O
Since a control means having a switch circuit set to N is provided, the number of rotations of the photoreceptor can be measured by the measuring means when the charging means is turned on. Therefore, since the lifespan of the image forming apparatus main body can be accurately managed, the reliability of lifespan management of the entire apparatus can be improved.
図は本発明に係る画像形成装置を示す断面図である。 １・・・・帯電手段、 ・・・露光手段、４・・ ・・計測手段、１７・・ ２・・・・感光体、３・ ・・現像手段、１６・・ ・・第２の制御手段。 The figure is a sectional view showing an image forming apparatus according to the present invention. 1...Charging means, ...Exposure means, 4... ...Measurement means, 17... 2... Photoreceptor, 3. ...Developing means, 16... ...Second control means.
Claims (1)
この帯電面に露光手段によって静電潜像を形成し、この
静電潜像を現像手段によって現像してから被転写材に転
写する画像形成装置であって、前記感光体の回転数を計
測する計測手段と、この計測手段による回転数を記憶す
るメモリー回路および前記計測手段を前記帯電手段のＯ
Ｎ状態においてスイッチＯＮとするスイッチ回路を有す
る制御手段とを付設したことを特徴とする画像形成装置
。The surface of the rotatable photoreceptor is charged by a charging means,
An image forming apparatus that forms an electrostatic latent image on this charged surface by an exposure means, develops this electrostatic latent image by a developing means, and then transfers it to a transfer material, and measures the number of rotations of the photoreceptor. A measuring means, a memory circuit for storing the number of rotations determined by the measuring means, and the measuring means are connected to the O of the charging means.
An image forming apparatus characterized in that the image forming apparatus is further equipped with a control means having a switch circuit that turns on the switch in the N state.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2052785A JPH03255465A (en) | 1990-03-06 | 1990-03-06 | Image forming device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2052785A JPH03255465A (en) | 1990-03-06 | 1990-03-06 | Image forming device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH03255465A true JPH03255465A (en) | 1991-11-14 |
Family
ID=12924495
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2052785A Pending JPH03255465A (en) | 1990-03-06 | 1990-03-06 | Image forming device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH03255465A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0934319A (en) * | 1995-07-24 | 1997-02-07 | Canon Inc | Image forming device |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58132246A (en) * | 1982-02-01 | 1983-08-06 | Canon Inc | image forming device |
| JPS62231270A (en) * | 1986-03-31 | 1987-10-09 | Mita Ind Co Ltd | Life detection system for drum unit of image forming device |
-
1990
- 1990-03-06 JP JP2052785A patent/JPH03255465A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58132246A (en) * | 1982-02-01 | 1983-08-06 | Canon Inc | image forming device |
| JPS62231270A (en) * | 1986-03-31 | 1987-10-09 | Mita Ind Co Ltd | Life detection system for drum unit of image forming device |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0934319A (en) * | 1995-07-24 | 1997-02-07 | Canon Inc | Image forming device |
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