JPS5774751A - Laser beam printer - Google Patents

Laser beam printer

Info

Publication number
JPS5774751A
JPS5774751A JP55150782A JP15078280A JPS5774751A JP S5774751 A JPS5774751 A JP S5774751A JP 55150782 A JP55150782 A JP 55150782A JP 15078280 A JP15078280 A JP 15078280A JP S5774751 A JPS5774751 A JP S5774751A
Authority
JP
Japan
Prior art keywords
laser beam
intensity
laser
photoreceptor
scan
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
JP55150782A
Other languages
Japanese (ja)
Other versions
JPS6355708B2 (en
Inventor
Kozo Arao
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.)
Canon Inc
Original Assignee
Canon Inc
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 Canon Inc filed Critical Canon Inc
Priority to JP55150782A priority Critical patent/JPS5774751A/en
Publication of JPS5774751A publication Critical patent/JPS5774751A/en
Publication of JPS6355708B2 publication Critical patent/JPS6355708B2/ja
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
    • H04N1/04—Scanning arrangements, i.e. arrangements for the displacement of active reading or reproducing elements relative to the original or reproducing medium, or vice versa
    • H04N1/047—Detection, control or error compensation of scanning velocity or position
    • H04N1/053—Detection, control or error compensation of scanning velocity or position in main scanning direction, e.g. synchronisation of line start or picture elements in a line

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Dot-Matrix Printers And Others (AREA)
  • Laser Beam Printer (AREA)
  • Exposure Or Original Feeding In Electrophotography (AREA)
  • Control Or Security For Electrophotography (AREA)
  • Facsimile Scanning Arrangements (AREA)
  • Fax Reproducing Arrangements (AREA)

Abstract

PURPOSE:To prevent the generating of a scanning track due to a relative position shift between a laser beam and a photoreceptor, by detecting the intensity of a latent image by the laser beam and by controlling the intensity of the laser beam according to the detection result. CONSTITUTION:A laser beam 15 from a laser generator 13 is passed through a polygon reflecting mirror 17 and an f.theta lens 19 to scan on a photosensitive drum 21. A potential sensor 61 detects the potential of a latent image formed by scanning the laser beam, and according to the detected level, a laser current driver 33 is controlled throught a controller 65 to control the beam intensity. Therefore, even when the laser beam can not scan on the photoreceptor accurately owing to vibrations, etc., the generation of a scanning track is prevented by controlling the intensity of the laser beam.
JP55150782A 1980-10-29 1980-10-29 Laser beam printer Granted JPS5774751A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP55150782A JPS5774751A (en) 1980-10-29 1980-10-29 Laser beam printer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP55150782A JPS5774751A (en) 1980-10-29 1980-10-29 Laser beam printer

Publications (2)

Publication Number Publication Date
JPS5774751A true JPS5774751A (en) 1982-05-11
JPS6355708B2 JPS6355708B2 (en) 1988-11-04

Family

ID=15504306

Family Applications (1)

Application Number Title Priority Date Filing Date
JP55150782A Granted JPS5774751A (en) 1980-10-29 1980-10-29 Laser beam printer

Country Status (1)

Country Link
JP (1) JPS5774751A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58174968A (en) * 1982-04-07 1983-10-14 Konishiroku Photo Ind Co Ltd Method and device for optical scanning type image recording
JPH01109371A (en) * 1987-10-23 1989-04-26 Canon Inc Recorder

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58174968A (en) * 1982-04-07 1983-10-14 Konishiroku Photo Ind Co Ltd Method and device for optical scanning type image recording
JPH01109371A (en) * 1987-10-23 1989-04-26 Canon Inc Recorder

Also Published As

Publication number Publication date
JPS6355708B2 (en) 1988-11-04

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