JPH02111912A - Image recorder - Google Patents

Image recorder

Info

Publication number
JPH02111912A
JPH02111912A JP26389788A JP26389788A JPH02111912A JP H02111912 A JPH02111912 A JP H02111912A JP 26389788 A JP26389788 A JP 26389788A JP 26389788 A JP26389788 A JP 26389788A JP H02111912 A JPH02111912 A JP H02111912A
Authority
JP
Japan
Prior art keywords
spot width
light
light quantity
laser
correcting circuit
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
JP26389788A
Other languages
Japanese (ja)
Inventor
Michio Ito
Akihiko Takeuchi
Takayasu Yunamochi
Hiromichi Yamada
Hiroshi Sasame
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 JP26389788A priority Critical patent/JPH02111912A/en
Publication of JPH02111912A publication Critical patent/JPH02111912A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE: To irradiate an image carrier with a light beam of the shape which is always constant or is assigned by independently providing a 1st spot width control means which controls the spot width of the light beam for exposing a photosensitive body with respect to the main scanning direction thereof or the spot width of the light beam with respect to the sub-scanning direction thereof respectively.
CONSTITUTION: The 1st spot width control means is constituted of a CPU 52, a light quantity correcting circuit 1, a pulse correcting circuit 2, etc. The light quantity correcting circuit 1 outputs the control signals 1a to 1c based on the light quantity control signal to a laser driver 53. Laser driving currents Ia to Ic are, therefore, applied to a semiconductor laser 54 and the light output P of the laser 54 increases successively to Pa to Pc. The light quantity distribution on a photosensitive drum 58 which is the surface to be irradiated is so formed that the spot width L can be changed to la to lc relative to the light quantity if the light output P is controlled to Pa to Pc in such a manner. The adjustment of the light beam to the beam spot width at which always the prescribed ratio is attained is possible in this way and the exposing at the specified beam spot width is executable.
COPYRIGHT: (C)1990,JPO&Japio
JP26389788A 1988-10-21 1988-10-21 Image recorder Pending JPH02111912A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP26389788A JPH02111912A (en) 1988-10-21 1988-10-21 Image recorder

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP26389788A JPH02111912A (en) 1988-10-21 1988-10-21 Image recorder

Publications (1)

Publication Number Publication Date
JPH02111912A true JPH02111912A (en) 1990-04-24

Family

ID=17395773

Family Applications (1)

Application Number Title Priority Date Filing Date
JP26389788A Pending JPH02111912A (en) 1988-10-21 1988-10-21 Image recorder

Country Status (1)

Country Link
JP (1) JPH02111912A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0498269A (en) * 1990-08-17 1992-03-30 Nec Corp Bar code printing control circuit
US5742324A (en) * 1994-05-11 1998-04-21 Kabushiki Kaisha Tec Exposing device having power controller for controlling laser power during dot exposing cycle in an electrophotographic process
JP2002002000A (en) * 2000-06-22 2002-01-08 Konica Corp Image recording device
JP2010197990A (en) * 2009-02-02 2010-09-09 Ricoh Co Ltd Optical scanning device, image forming apparatus, control method and program

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0498269A (en) * 1990-08-17 1992-03-30 Nec Corp Bar code printing control circuit
US5742324A (en) * 1994-05-11 1998-04-21 Kabushiki Kaisha Tec Exposing device having power controller for controlling laser power during dot exposing cycle in an electrophotographic process
JP2002002000A (en) * 2000-06-22 2002-01-08 Konica Corp Image recording device
JP2010197990A (en) * 2009-02-02 2010-09-09 Ricoh Co Ltd Optical scanning device, image forming apparatus, control method and program

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