JPS5711362A - Semiconductor laser control method - Google Patents

Semiconductor laser control method

Info

Publication number
JPS5711362A
JPS5711362A JP8532680A JP8532680A JPS5711362A JP S5711362 A JPS5711362 A JP S5711362A JP 8532680 A JP8532680 A JP 8532680A JP 8532680 A JP8532680 A JP 8532680A JP S5711362 A JPS5711362 A JP S5711362A
Authority
JP
Japan
Prior art keywords
semiconductor laser
laser
drum
emission
fed
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
JP8532680A
Other languages
Japanese (ja)
Inventor
Shuji Kimura
Masao Konishi
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.)
Fujitsu Ltd
Original Assignee
Fujitsu Ltd
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 Fujitsu Ltd filed Critical Fujitsu Ltd
Priority to JP8532680A priority Critical patent/JPS5711362A/en
Publication of JPS5711362A publication Critical patent/JPS5711362A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
    • G06K15/00—Arrangements for producing a permanent visual presentation of the output data, e.g. computer output printers
    • G06K15/02—Arrangements for producing a permanent visual presentation of the output data, e.g. computer output printers using printers
    • G06K15/12—Arrangements for producing a permanent visual presentation of the output data, e.g. computer output printers using printers by photographic printing, e.g. by laser printers
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
    • H01S5/00—Semiconductor lasers
    • H01S5/06—Arrangements for controlling the laser output parameters, e.g. by operating on the active medium
    • H01S5/068—Stabilisation of laser output parameters
    • H01S5/0683—Stabilisation of laser output parameters by monitoring the optical output parameters
    • H01S5/06835—Stabilising during pulse modulation or generation
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
    • H01S5/00—Semiconductor lasers
    • H01S5/06—Arrangements for controlling the laser output parameters, e.g. by operating on the active medium
    • H01S5/068—Stabilisation of laser output parameters
    • H01S5/06825—Protecting the laser, e.g. during switch-on/off, detection of malfunctioning or degradation

Landscapes

  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Condensed Matter Physics & Semiconductors (AREA)
  • Electromagnetism (AREA)
  • Exposure Or Original Feeding In Electrophotography (AREA)
  • Dot-Matrix Printers And Others (AREA)
  • Laser Beam Printer (AREA)

Abstract

PURPOSE:To reduce an emission time of a semiconductor laser to the necessary minimum, and to extend a life of the semiconductor laser, by controlling emission of the semiconductor laser with start and stop signals of a photosensitive drum. CONSTITUTION:When a drive signal issued at start of a photosensitive drum is applied to the controller 21 to which printing data 14 are fed, the controller 21 applies the drum drive signal through a specified time constant circuit, etc. to the AND gate 22 to which video signals are fed to open the gate 22. Accordingly, when the drum is driven and a rotary mirror for scanning comes to turn stably, a semiconductor laser 1 emits light and characters corresponding to the printing data 14 are formed, and when the drum stops, emission of the laser 1 also stops. The life of the laser 1 is extended by thus controlling a laser emission time to the necessary minimum.
JP8532680A 1980-06-24 1980-06-24 Semiconductor laser control method Pending JPS5711362A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8532680A JPS5711362A (en) 1980-06-24 1980-06-24 Semiconductor laser control method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8532680A JPS5711362A (en) 1980-06-24 1980-06-24 Semiconductor laser control method

Publications (1)

Publication Number Publication Date
JPS5711362A true JPS5711362A (en) 1982-01-21

Family

ID=13855499

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8532680A Pending JPS5711362A (en) 1980-06-24 1980-06-24 Semiconductor laser control method

Country Status (1)

Country Link
JP (1) JPS5711362A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60100869A (en) * 1983-11-07 1985-06-04 Canon Inc Laser beam scanner

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60100869A (en) * 1983-11-07 1985-06-04 Canon Inc Laser beam scanner

Similar Documents

Publication Publication Date Title
ATE107246T1 (en) YAW CONTROL DEVICE FOR A VEHICLE.
GB1515606A (en) Electrophotographic apparatus
KR860001359A (en) Driving method of optical switch element
EP0359248A3 (en) Laser irradiating apparatus and laser recording apparatus using the same
JPS5711362A (en) Semiconductor laser control method
JPS55103097A (en) System for driving motor for moving stage
EP0355839A3 (en) Optical beam scanning apparatus
JPS6467347A (en) Image exposure apparatus
JPS5726875A (en) Electrophotographic type printer device
KR900015051A (en) Driving Method of Image Display Element
JPS5780881A (en) Rotary head type magnetic recording and reproducing device
US5767890A (en) Image output apparatus
JPS6456465A (en) Exposure correction device for laser beam printer
SHIYUUJI et al. Semiconductor laser control method
KR920701949A (en) Optical recorder
JPS54135552A (en) Laser recorder
JPS5738191A (en) Recording method
JPS5487129A (en) Format synthesizer
JPS6411839A (en) Image recording apparatus of laser scanning type
JP3008225B2 (en) Image recording device
JPS51141531A (en) Optical scanning device
EP0513682B1 (en) Image formation device
JPS5762470A (en) Scanning type picture recorder
JPS6476432A (en) Optical information recording and reproducing device
JPS6416673A (en) Power supplying method for printer