JPS56140768A - Optical device for multibeam scanning - Google Patents

Optical device for multibeam scanning

Info

Publication number
JPS56140768A
JPS56140768A JP4297580A JP4297580A JPS56140768A JP S56140768 A JPS56140768 A JP S56140768A JP 4297580 A JP4297580 A JP 4297580A JP 4297580 A JP4297580 A JP 4297580A JP S56140768 A JPS56140768 A JP S56140768A
Authority
JP
Japan
Prior art keywords
opening
size
scanning
lens
spots
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
JP4297580A
Other languages
Japanese (ja)
Inventor
Isao Sato
Yukio Sakai
Fumio Yamazaki
Michinori Nagahiro
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.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial Co 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 Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP4297580A priority Critical patent/JPS56140768A/en
Publication of JPS56140768A publication Critical patent/JPS56140768A/en
Pending legal-status Critical Current

Links

Classifications

    • GPHYSICS
    • G06COMPUTING; CALCULATING; COUNTING
    • G06KGRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
    • G06K15/00Arrangements for producing a permanent visual presentation of the output data, e.g. computer output printers
    • G06K15/02Arrangements for producing a permanent visual presentation of the output data, e.g. computer output printers using printers
    • G06K15/12Arrangements 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
    • G06K15/1238Arrangements 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 simultaneously exposing more than one point
    • G06K15/1257Arrangements 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 simultaneously exposing more than one point on more than one main scanning line
    • G06K15/1261Arrangements 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 simultaneously exposing more than one point on more than one main scanning line using an array of light sources

Abstract

PURPOSE:To obtain the same size and same form for plural spots on the scanning screen, by giving a simultaneous shaping to plural laser beams with a beam shaping opening. CONSTITUTION:The laser beams 50 given from the laser beam source 42 are changed into the parallel beams 52 through a collimating lens 47 and then put into the rotary polyhedral mirror 48. In this case, the beam 51 is shaped through the beam shaping opening 49 provided on the figure side focal surface of the lens 47 and having an oblong form of the opening. The shaped parallel beam 52 is reflected on the surface of the mirror 48 and then converted into the equi-speed linear scan through the Ftheta lens 53. At the same time, the beam 52 is condensed to draw two pieces of scanning lines 55 on the photosensitive drum 54. The size of the scanning spots that form the line 55 is varied by the size of the opening 49. In the diagram, the figures 43a and 43b are semiconductor lasers, 44 and 45 are current driving circuits and 46 is a pattern generating circuit respectively.
JP4297580A 1980-04-01 1980-04-01 Optical device for multibeam scanning Pending JPS56140768A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4297580A JPS56140768A (en) 1980-04-01 1980-04-01 Optical device for multibeam scanning

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4297580A JPS56140768A (en) 1980-04-01 1980-04-01 Optical device for multibeam scanning

Publications (1)

Publication Number Publication Date
JPS56140768A true JPS56140768A (en) 1981-11-04

Family

ID=12651035

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4297580A Pending JPS56140768A (en) 1980-04-01 1980-04-01 Optical device for multibeam scanning

Country Status (1)

Country Link
JP (1) JPS56140768A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5933420A (en) * 1982-07-28 1984-02-23 Xerox Corp Optical system
JPS5997117A (en) * 1982-11-04 1984-06-04 Xerox Corp Optical apparatus
JPS6318481A (en) * 1986-07-10 1988-01-26 Fujitsu Ltd Bar code demodulator
EP0315776A2 (en) * 1987-11-09 1989-05-17 International Business Machines Corporation Scanner for use in multiple spot laser electrophotographic printer
EP0480195A2 (en) * 1990-10-11 1992-04-15 International Business Machines Corporation Spot-defined exposure system for a laser printer

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5933420A (en) * 1982-07-28 1984-02-23 Xerox Corp Optical system
JPS5997117A (en) * 1982-11-04 1984-06-04 Xerox Corp Optical apparatus
JPH0581884B2 (en) * 1982-11-04 1993-11-16 Xerox Corp
JPS6318481A (en) * 1986-07-10 1988-01-26 Fujitsu Ltd Bar code demodulator
EP0315776A2 (en) * 1987-11-09 1989-05-17 International Business Machines Corporation Scanner for use in multiple spot laser electrophotographic printer
EP0480195A2 (en) * 1990-10-11 1992-04-15 International Business Machines Corporation Spot-defined exposure system for a laser printer

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