JPS62169355U - - Google Patents

Info

Publication number
JPS62169355U
JPS62169355U JP5812786U JP5812786U JPS62169355U JP S62169355 U JPS62169355 U JP S62169355U JP 5812786 U JP5812786 U JP 5812786U JP 5812786 U JP5812786 U JP 5812786U JP S62169355 U JPS62169355 U JP S62169355U
Authority
JP
Japan
Prior art keywords
laser
image
latent image
forming apparatus
line pattern
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
JP5812786U
Other languages
Japanese (ja)
Other versions
JPH0542439Y2 (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 JP5812786U priority Critical patent/JPH0542439Y2/ja
Publication of JPS62169355U publication Critical patent/JPS62169355U/ja
Application granted granted Critical
Publication of JPH0542439Y2 publication Critical patent/JPH0542439Y2/ja
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Landscapes

  • Dot-Matrix Printers And Others (AREA)
  • Laser Beam Printer (AREA)
  • Exposure Or Original Feeding In Electrophotography (AREA)
  • Combination Of More Than One Step In Electrophotography (AREA)
  • Fax Reproducing Arrangements (AREA)

Description

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

第１図は本考案による画像形成装置を適用した
レーザ複写機の実施例の概略断面図、第２図は画
像形成装置のブロツク図、第３図は濃度検知用の
ラインパターンを示す説明図、第４図はレーザビ
ームの走査状態を示す説明図、第５図はレーザ点
灯時間を変えたときの光強度分布図、第６図は静
電潜像とその現像画像との関係を示す説明図、第
７図は画像形成パターンの例を示す説明図、第８
図は従来例における静電潜像とその現像画像との
関係を示す説明図である。 １：感光体ドラム、２：帯電器、３：現像器、
４：転写用帯電器、５：クリーナ、６：除電ラン
プ、７：レーザ走査露光装置、８：レーザ駆動回
路、１４：濃度検知センサ、２１：検出回路、２
２：比較回路、２３：演算回路、２４：制御回路
、２５：パターン発生回路、２６：レーザ点灯時
間可変回路、２７：光量制御回路、２８：変調回
路、２９：レーザダイオード、Ｌ，Ｍ：ラインパ
ターン、Ｒ：レーザビーム。 FIG. 1 is a schematic sectional view of an embodiment of a laser copying machine to which an image forming apparatus according to the present invention is applied, FIG. 2 is a block diagram of the image forming apparatus, and FIG. 3 is an explanatory diagram showing a line pattern for density detection. Figure 4 is an explanatory diagram showing the scanning state of the laser beam, Figure 5 is a light intensity distribution diagram when the laser lighting time is changed, and Figure 6 is an explanatory diagram showing the relationship between the electrostatic latent image and its developed image. , FIG. 7 is an explanatory diagram showing an example of an image forming pattern, and FIG.
The figure is an explanatory diagram showing the relationship between an electrostatic latent image and its developed image in a conventional example. 1: Photosensitive drum, 2: Charger, 3: Developer,
4: Transfer charger, 5: Cleaner, 6: Static elimination lamp, 7: Laser scanning exposure device, 8: Laser drive circuit, 14: Density detection sensor, 21: Detection circuit, 2
2: Comparison circuit, 23: Arithmetic circuit, 24: Control circuit, 25: Pattern generation circuit, 26: Laser lighting time variable circuit, 27: Light amount control circuit, 28: Modulation circuit, 29: Laser diode, L, M: Line Pattern, R: laser beam.

Claims (1)

【実用新案登録請求の範囲】 レーザビームの走査により感光体ドラム上に潜
像を形成し、該潜像を現像して画像を形成する画
像形成装置において、 上記感光体ドラム上に互いに異なる方向のライ
ンパターンの潜像をそれぞれ形成するラインパタ
ーン形成装置と、現像後の上記各ラインパターン
の濃度を検出し、該両濃度が一致するようにレー
ザの点灯時間を制御するレーザ駆動装置とを設け
たことを特徴とする画像形成装置。[Claims for Utility Model Registration] In an image forming apparatus that forms a latent image on a photoreceptor drum by scanning a laser beam, and develops the latent image to form an image, there are images on the photoreceptor drum in different directions. A line pattern forming device that forms a latent image of each line pattern, and a laser drive device that detects the density of each of the line patterns after development and controls the lighting time of the laser so that the two densities match are provided. An image forming apparatus characterized by:
JP5812786U 1986-04-16 1986-04-16 Expired - Lifetime JPH0542439Y2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5812786U JPH0542439Y2 (en) 1986-04-16 1986-04-16

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5812786U JPH0542439Y2 (en) 1986-04-16 1986-04-16

Publications (2)

Publication Number Publication Date
JPS62169355U true JPS62169355U (en) 1987-10-27
JPH0542439Y2 JPH0542439Y2 (en) 1993-10-26

Family

ID=30888444

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5812786U Expired - Lifetime JPH0542439Y2 (en) 1986-04-16 1986-04-16

Country Status (1)

Country Link
JP (1) JPH0542439Y2 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01206368A (en) * 1987-10-15 1989-08-18 Ricoh Co Ltd Image forming device
KR100339671B1 (en) * 1993-08-20 2002-11-22 산요 덴키 가부시키가이샤 Printer with line head
JP2008145452A (en) * 2006-12-05 2008-06-26 Canon Inc Image forming apparatus and line width correction method therefor
JP2008216813A (en) * 2007-03-06 2008-09-18 Canon Inc Image forming apparatus and its control method

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01206368A (en) * 1987-10-15 1989-08-18 Ricoh Co Ltd Image forming device
KR100339671B1 (en) * 1993-08-20 2002-11-22 산요 덴키 가부시키가이샤 Printer with line head
JP2008145452A (en) * 2006-12-05 2008-06-26 Canon Inc Image forming apparatus and line width correction method therefor
JP2008216813A (en) * 2007-03-06 2008-09-18 Canon Inc Image forming apparatus and its control method

Also Published As

Publication number Publication date
JPH0542439Y2 (en) 1993-10-26

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