JPS6476019A - Optical device for image forming device - Google Patents

Optical device for image forming device

Info

Publication number
JPS6476019A
JPS6476019A JP62232351A JP23235187A JPS6476019A JP S6476019 A JPS6476019 A JP S6476019A JP 62232351 A JP62232351 A JP 62232351A JP 23235187 A JP23235187 A JP 23235187A JP S6476019 A JPS6476019 A JP S6476019A
Authority
JP
Japan
Prior art keywords
image
scanning mirror
variation
image forming
optical axis
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
JP62232351A
Other languages
Japanese (ja)
Inventor
Takashi Shiraishi
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Toshiba Corp
Original Assignee
Toshiba Corp
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 by Toshiba Corp filed Critical Toshiba Corp
Priority to JP62232351A priority Critical patent/JPS6476019A/en
Publication of JPS6476019A publication Critical patent/JPS6476019A/en
Pending legal-status Critical Current

Links

Landscapes

  • Dot-Matrix Printers And Others (AREA)
  • Laser Beam Printer (AREA)
  • Mechanical Optical Scanning Systems (AREA)
  • Facsimile Scanning Arrangements (AREA)
  • Fax Reproducing Arrangements (AREA)

Abstract

PURPOSE:To reduce the variation of the image height on an image carrier and to improve an image quality by allowing the plural laser beams radiated on a scanning mirror to come near in parallel with an optical axis. CONSTITUTION:A diaphragm 36 which makes the center of the plural laser beams 27a, 27b parallel or condensed is set on the collimator lens 32 side of the scanning mirror 34. Consequently, the angle made by an incident light to the scanning mirror 34 and the optical axis is reduced to approach zero regardless of the variation of the length, from the prism compressor 33 to the scanning mirror 34, which is caused by the form of the mirror 34. On the image carrier 38, the variation of the image height of the laser beam is reduced or can be zero, the deviation of image is prevented, and the image quantity is improved.
JP62232351A 1987-09-18 1987-09-18 Optical device for image forming device Pending JPS6476019A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62232351A JPS6476019A (en) 1987-09-18 1987-09-18 Optical device for image forming device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62232351A JPS6476019A (en) 1987-09-18 1987-09-18 Optical device for image forming device

Publications (1)

Publication Number Publication Date
JPS6476019A true JPS6476019A (en) 1989-03-22

Family

ID=16937845

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62232351A Pending JPS6476019A (en) 1987-09-18 1987-09-18 Optical device for image forming device

Country Status (1)

Country Link
JP (1) JPS6476019A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1992021069A1 (en) * 1991-05-14 1992-11-26 Seiko Epson Corporation Image-forming device

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1992021069A1 (en) * 1991-05-14 1992-11-26 Seiko Epson Corporation Image-forming device
EP0697782A2 (en) * 1991-05-14 1996-02-21 Seiko Epson Corporation Image forming apparatus
US5610647A (en) * 1991-05-14 1997-03-11 Seigo Epson Corporation Image forming apparatus including a plural laser beam scanning apparatus
US6326992B1 (en) 1991-05-14 2001-12-04 Seiko Epson Corporation Image forming apparatus

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