JPS6463917A - Optical scanning device - Google Patents

Optical scanning device

Info

Publication number
JPS6463917A
JPS6463917A JP62221537A JP22153787A JPS6463917A JP S6463917 A JPS6463917 A JP S6463917A JP 62221537 A JP62221537 A JP 62221537A JP 22153787 A JP22153787 A JP 22153787A JP S6463917 A JPS6463917 A JP S6463917A
Authority
JP
Japan
Prior art keywords
scanning
previously measured
light
line pitch
irregularity
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
JP62221537A
Other languages
Japanese (ja)
Inventor
Masahiko Nagao
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.)
NEC Corp
Original Assignee
NEC 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 NEC Corp filed Critical NEC Corp
Priority to JP62221537A priority Critical patent/JPS6463917A/en
Publication of JPS6463917A publication Critical patent/JPS6463917A/en
Pending legal-status Critical Current

Links

Landscapes

  • Mechanical Optical Scanning Systems (AREA)
  • Facsimile Scanning Arrangements (AREA)
  • Fax Reproducing Arrangements (AREA)

Abstract

PURPOSE:To reduce the distortion of an image by deflecting light according to previously measured irregularity in scanning line pitch and correcting dynamic scanning line pitch irregularity due to the tilting of the axis of to rotary polygon mirror at the time of rotation by an optical modulator in addition to the previously measured scanning line pitch irregularity. CONSTITUTION:This optical scanning device is constituted while including a photodetector 7 which is arranged nearby the prescribed scanning start position of scanning light and detects the position of the scanning light on the photodetection surface, a static error storage circuit 8 for storing the quantity of a position shift from the target scan of scanning light in each surface of the previously measured rotary polygon mirror 4, and a controller 3 which outputs an optical modulator driving signal for correcting the position shift from the target scanning position of the scanning light with the output of the static error storage circuit 8 and the output of the detector 7. Consequently, a dynamic error is removed and the distortion of an image is reduced.
JP62221537A 1987-09-03 1987-09-03 Optical scanning device Pending JPS6463917A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62221537A JPS6463917A (en) 1987-09-03 1987-09-03 Optical scanning device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62221537A JPS6463917A (en) 1987-09-03 1987-09-03 Optical scanning device

Publications (1)

Publication Number Publication Date
JPS6463917A true JPS6463917A (en) 1989-03-09

Family

ID=16768274

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62221537A Pending JPS6463917A (en) 1987-09-03 1987-09-03 Optical scanning device

Country Status (1)

Country Link
JP (1) JPS6463917A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5245181A (en) * 1991-06-24 1993-09-14 Dainippon Screen Mfg. Co., Ltd. Method and apparatus of detecting deviation of scanning line of light beam

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5245181A (en) * 1991-06-24 1993-09-14 Dainippon Screen Mfg. Co., Ltd. Method and apparatus of detecting deviation of scanning line of light beam

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