JPH0371354U - - Google Patents

Info

Publication number
JPH0371354U
JPH0371354U JP13167089U JP13167089U JPH0371354U JP H0371354 U JPH0371354 U JP H0371354U JP 13167089 U JP13167089 U JP 13167089U JP 13167089 U JP13167089 U JP 13167089U JP H0371354 U JPH0371354 U JP H0371354U
Authority
JP
Japan
Prior art keywords
image
image forming
forming apparatus
exposing
control means
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
Application number
JP13167089U
Other languages
Japanese (ja)
Other versions
JP2532458Y2 (en
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed filed Critical
Priority to JP1989131670U priority Critical patent/JP2532458Y2/en
Publication of JPH0371354U publication Critical patent/JPH0371354U/ja
Application granted granted Critical
Publication of JP2532458Y2 publication Critical patent/JP2532458Y2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Landscapes

  • Discharging, Photosensitive Material Shape In Electrophotography (AREA)
  • Developing For Electrophotography (AREA)
  • Exposure Or Original Feeding In Electrophotography (AREA)
  • Electrostatic Charge, Transfer And Separation In Electrography (AREA)

Description

【図面の簡単な説明】[Brief explanation of the drawing]

第１図はこの考案に係る画質安定化装置の動作
を示すグラフ、第２図は同方法を適用し得る画像
形成装置を示す構成図、第３図は制御回路を示す
ブロツク図、第４図は動作を示すフローチヤート
、第５図はこの考案の他の実施例の動作を示すグ
ラフ、第６図はこの考案のさらに他の実施例の動
作を示すグラフ、第７図は同実施例の制御回路を
示すブロツク図、第８図及び第９図はこの考案の
それぞれさらに他の実施例を示すブロツク図、第
１０図は感光体ドラムの電位を示すグラフ、第１
１図は従来例における感光体の帯電特性を示すグ
ラフである。 符号の説明、１……画像露光、２……感光体ド
ラム、４……現像器、５……現像スリーブ、１１
……電源スイツチ、１２……コピーボタン、１３
……サイクルカウンタ、１４……ＣＰＵ。 FIG. 1 is a graph showing the operation of the image quality stabilizing device according to this invention, FIG. 2 is a block diagram showing an image forming apparatus to which the method can be applied, FIG. 3 is a block diagram showing a control circuit, and FIG. 4 5 is a flow chart showing the operation, FIG. 5 is a graph showing the operation of another embodiment of this invention, FIG. 6 is a graph showing the operation of still another embodiment of this invention, and FIG. 7 is a graph showing the operation of another embodiment of this invention. FIGS. 8 and 9 are block diagrams showing further embodiments of the invention, and FIG. 10 is a graph showing the potential of the photosensitive drum.
FIG. 1 is a graph showing the charging characteristics of a photoreceptor in a conventional example. Explanation of symbols, 1... Image exposure, 2... Photosensitive drum, 4... Developing device, 5... Developing sleeve, 11
...Power switch, 12...Copy button, 13
...Cycle counter, 14...CPU.

Claims (1)

【実用新案登録請求の範囲】 (1) 一様の帯電された感光体上に原稿の画像を
露光して静電潜像を形成し、この静電潜像を現象
して画像の形成を行なう画像形成装置の画質安定
化装置において、上記露光量又は現象バイアスを
、画像形成動作開始後一定時間経過した後に調整
する制御手段を備えたことを特徴とする画像形成
装置の画質安定化装置。 (2) 上記制御手段が、サイクルカウンタによつ
て画像形成サイクルをカウントして現象バイアス
又は画像を露光する光量を調整することを特徴と
する請求項第１項記載の画像形成装置の画質安定
化装置。 (3) 上記制御手段が、サイクルカウンタによつ
て画像形成サイクルをカウントするとともにレス
ト時間を計測して、現象バイアス又は画像を露光
する光量を調整することを特徴とする請求項第１
項記載の画像形成装置の画質安定化装置。[Claims for Utility Model Registration] (1) An electrostatic latent image is formed by exposing an image of a document onto a uniformly charged photoreceptor, and an image is formed by causing this electrostatic latent image to develop. An image quality stabilizing device for an image forming apparatus, characterized in that the image forming apparatus comprises a control means for adjusting the exposure amount or phenomenon bias after a predetermined period of time has elapsed after the start of the image forming operation. (2) Image quality stabilization of the image forming apparatus according to claim 1, wherein the control means counts image forming cycles using a cycle counter and adjusts the phenomenon bias or the amount of light for exposing the image. Device. (3) Claim 1, wherein the control means counts image forming cycles using a cycle counter and measures rest time to adjust the phenomenon bias or the amount of light for exposing the image.
An image quality stabilizing device for an image forming apparatus as described in 1.
JP1989131670U 1989-11-14 1989-11-14 Image stabilization device for image forming equipment Expired - Lifetime JP2532458Y2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1989131670U JP2532458Y2 (en) 1989-11-14 1989-11-14 Image stabilization device for image forming equipment

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1989131670U JP2532458Y2 (en) 1989-11-14 1989-11-14 Image stabilization device for image forming equipment

Publications (2)

Publication Number Publication Date
JPH0371354U true JPH0371354U (en) 1991-07-18
JP2532458Y2 JP2532458Y2 (en) 1997-04-16

Family

ID=31679161

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1989131670U Expired - Lifetime JP2532458Y2 (en) 1989-11-14 1989-11-14 Image stabilization device for image forming equipment

Country Status (1)

Country Link
JP (1) JP2532458Y2 (en)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS53115231A (en) * 1977-03-18 1978-10-07 Ricoh Co Ltd Correction method for fatigue of photosensitive body of electrophotographic copier
JPS58108555A (en) * 1981-12-23 1983-06-28 Fuji Xerox Co Ltd Controlling method of electronic copying machine
JPH01107271A (en) * 1987-10-20 1989-04-25 Ricoh Co Ltd Image forming device

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS53115231A (en) * 1977-03-18 1978-10-07 Ricoh Co Ltd Correction method for fatigue of photosensitive body of electrophotographic copier
JPS58108555A (en) * 1981-12-23 1983-06-28 Fuji Xerox Co Ltd Controlling method of electronic copying machine
JPH01107271A (en) * 1987-10-20 1989-04-25 Ricoh Co Ltd Image forming device

Also Published As

Publication number Publication date
JP2532458Y2 (en) 1997-04-16

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