JPH0428652U - - Google Patents

Info

Publication number
JPH0428652U
JPH0428652U JP7062190U JP7062190U JPH0428652U JP H0428652 U JPH0428652 U JP H0428652U JP 7062190 U JP7062190 U JP 7062190U JP 7062190 U JP7062190 U JP 7062190U JP H0428652 U JPH0428652 U JP H0428652U
Authority
JP
Japan
Prior art keywords
laser beam
shutter
image
image forming
beam path
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
Application number
JP7062190U
Other languages
Japanese (ja)
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 JP7062190U priority Critical patent/JPH0428652U/ja
Publication of JPH0428652U publication Critical patent/JPH0428652U/ja
Pending legal-status Critical Current

Links

Landscapes

  • Exposure Or Original Feeding In Electrophotography (AREA)
  • Facsimile Scanning Arrangements (AREA)
  • Dot-Matrix Printers And Others (AREA)
  • Laser Beam Printer (AREA)

Description

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

第１図は本考案の一実施例に係る光書き込み系
の構成を示す図、第２図はシヤツター付アパーチ
ヤの具体例を示す斜視図、第３図はレーザープリ
ンタの制御部の機能説明図、第４図は本考案の動
作フローを示す図、第５図はＬＤのＡＰＣ制御回
路の一例を示す図である。 １……半導体レーザーダイオード（ＬＤ）、３
……シヤツター付アパーチヤ、５……感光体、７
……ポリゴンミラー、１４……ＬＤ駆動回路、１
５……受光素子（ＰＤ）、１７……比較器、１８
……アツプダウンカウンタ、１９……フリツプフ
ロツプ、２３……ＣＰＵ、３０……基体部、３０
Ａ……垂直壁、３１……シヤツター部、３２……
アパーチヤ部、３３……パルスモータ、３４……
ピニオン、３５……ピニオンラツク、３６……ガ
イドピン、３７……ガイド溝。 FIG. 1 is a diagram showing the configuration of an optical writing system according to an embodiment of the present invention, FIG. 2 is a perspective view showing a specific example of an aperture with a shutter, and FIG. 3 is a functional explanatory diagram of a control unit of a laser printer. FIG. 4 is a diagram showing the operation flow of the present invention, and FIG. 5 is a diagram showing an example of an LD APC control circuit. 1... Semiconductor laser diode (LD), 3
...Aperture with shutter, 5...Photoconductor, 7
...Polygon mirror, 14...LD drive circuit, 1
5... Photo receiving element (PD), 17... Comparator, 18
...Up-down counter, 19...Flip-flop, 23...CPU, 30...Base part, 30
A... Vertical wall, 31... Shutter section, 32...
Aperture section, 33...Pulse motor, 34...
Pinion, 35...pinion rack, 36...guide pin, 37...guide groove.

Claims (1)

【実用新案登録請求の範囲】 (1) ビデオ信号によつて発光制御されるレーザ
ーダイオードからのレーザ光を走査し像担持体上
に結像させる光書き込み系を有する画像形成装置
において、 前記像担持体上に結像させるレーザーダイオー
ドからのレーザ光路を遮断するシヤツターを備え
、該シヤツターはレーザーダイオードのＡＰＣ制
御開始時にレーザ光路を遮断し、ＡＰＣ制御終了
時にレーザ光路遮断を開放するようにしたことを
特徴とする画像形成装置。 (2) シヤツターはレーザービームのスポツト径
を規制するアパーチヤと一体に形成したことを特
徴とする請求項(1)記載の画像形成装置。[Claims for Utility Model Registration] (1) An image forming apparatus having an optical writing system that scans laser light from a laser diode whose emission is controlled by a video signal and forms an image on an image carrier, It is equipped with a shutter that blocks the laser beam path from the laser diode that forms an image on the body, and the shutter blocks the laser beam path when the APC control of the laser diode is started, and releases the laser beam path cutoff when the APC control ends. Features of the image forming device. (2) The image forming apparatus according to claim (1), wherein the shutter is formed integrally with an aperture that regulates the spot diameter of the laser beam.
JP7062190U 1990-07-04 1990-07-04 Pending JPH0428652U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7062190U JPH0428652U (en) 1990-07-04 1990-07-04

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7062190U JPH0428652U (en) 1990-07-04 1990-07-04

Publications (1)

Publication Number Publication Date
JPH0428652U true JPH0428652U (en) 1992-03-06

Family

ID=31606930

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7062190U Pending JPH0428652U (en) 1990-07-04 1990-07-04

Country Status (1)

Country Link
JP (1) JPH0428652U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010212475A (en) * 2009-03-11 2010-09-24 Sony Corp Light stabilizing device, light stabilizing method, and printing device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010212475A (en) * 2009-03-11 2010-09-24 Sony Corp Light stabilizing device, light stabilizing method, and printing device

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