JPS54150140A - Recorder - Google Patents

Recorder

Info

Publication number
JPS54150140A
JPS54150140A JP5865178A JP5865178A JPS54150140A JP S54150140 A JPS54150140 A JP S54150140A JP 5865178 A JP5865178 A JP 5865178A JP 5865178 A JP5865178 A JP 5865178A JP S54150140 A JPS54150140 A JP S54150140A
Authority
JP
Japan
Prior art keywords
galvanomirrors
light
modulating elements
scanned
direct modulating
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
JP5865178A
Other languages
Japanese (ja)
Other versions
JPS6053854B2 (en
Inventor
Koichi Sakurai
Iwao Hamaguchi
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.)
Ricoh Co Ltd
Original Assignee
Ricoh 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 Ricoh Co Ltd filed Critical Ricoh Co Ltd
Priority to JP5865178A priority Critical patent/JPS6053854B2/en
Publication of JPS54150140A publication Critical patent/JPS54150140A/en
Publication of JPS6053854B2 publication Critical patent/JPS6053854B2/en
Expired legal-status Critical Current

Links

Landscapes

  • Dot-Matrix Printers And Others (AREA)
  • Laser Beam Printer (AREA)
  • Mechanical Optical Scanning Systems (AREA)

Abstract

PURPOSE: To achieve the improvement in resolving power by using plural sets of direct modulating elements and galvanomirrors.
CONSTITUTION: Direct modulating elements 25, 26 composed of two semiconductor lasers or light emitting diodes and galvanomirrors 31, 32 are disposed. As a result, the direct modulating elements 25, 26 are driven by the output signals of driving systems 27, 28 to produce the modulated light. The modulated light is made to parallel light by optical systems 29, 30 and is scanned by the galvanomirrors 31, 32. The scanned light is condensed by fθ lenses 33, 34 to scan the left and right halves of a photosensitive drum 33 simultaneously from the end toward the central part. Hence, the light source part becomes smaller and the need for external modulators is eliminated. Further, the swing angles of the galvanomirrors 31, 32 can be half and therefore the resolution becomes high and the speed of recording is doubled.
COPYRIGHT: (C)1979,JPO&Japio
JP5865178A 1978-05-17 1978-05-17 recording device Expired JPS6053854B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5865178A JPS6053854B2 (en) 1978-05-17 1978-05-17 recording device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5865178A JPS6053854B2 (en) 1978-05-17 1978-05-17 recording device

Publications (2)

Publication Number Publication Date
JPS54150140A true JPS54150140A (en) 1979-11-26
JPS6053854B2 JPS6053854B2 (en) 1985-11-27

Family

ID=13090478

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5865178A Expired JPS6053854B2 (en) 1978-05-17 1978-05-17 recording device

Country Status (1)

Country Link
JP (1) JPS6053854B2 (en)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5879215A (en) * 1981-11-06 1983-05-13 Hitachi Ltd Optical system for two color laser printer
JPS5895361A (en) * 1981-12-01 1983-06-06 Canon Inc Laser printer
JPS58123540A (en) * 1982-01-19 1983-07-22 Dainippon Screen Mfg Co Ltd Original image scanning method in image scanning recording
JPS5940620A (en) * 1982-08-30 1984-03-06 Fujitsu Ltd Scanning system
JPS59123368A (en) * 1982-12-29 1984-07-17 Canon Inc Recorder
US4987044A (en) * 1989-05-31 1991-01-22 E. I. Du Pont De Nemours And Company Method and apparatus for maintaining desired exposure levels
JP2002267966A (en) * 2001-03-08 2002-09-18 Ricoh Co Ltd Optical scanner, image forming device and image recording method
JP2002267972A (en) * 2001-03-14 2002-09-18 Ricoh Co Ltd Optical scanner and image forming device
JP2003098459A (en) * 2001-09-26 2003-04-03 Ricoh Co Ltd Optical scanner and image forming apparatus

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5879215A (en) * 1981-11-06 1983-05-13 Hitachi Ltd Optical system for two color laser printer
JPH0474688B2 (en) * 1981-11-06 1992-11-26
JPS5895361A (en) * 1981-12-01 1983-06-06 Canon Inc Laser printer
JPH0451829B2 (en) * 1981-12-01 1992-08-20 Canon Kk
JPH0360112B2 (en) * 1982-01-19 1991-09-12 Dainippon Screen Mfg
JPS58123540A (en) * 1982-01-19 1983-07-22 Dainippon Screen Mfg Co Ltd Original image scanning method in image scanning recording
JPH044568B2 (en) * 1982-08-30 1992-01-28
JPS5940620A (en) * 1982-08-30 1984-03-06 Fujitsu Ltd Scanning system
JPS59123368A (en) * 1982-12-29 1984-07-17 Canon Inc Recorder
US4987044A (en) * 1989-05-31 1991-01-22 E. I. Du Pont De Nemours And Company Method and apparatus for maintaining desired exposure levels
JP2002267966A (en) * 2001-03-08 2002-09-18 Ricoh Co Ltd Optical scanner, image forming device and image recording method
JP4695276B2 (en) * 2001-03-08 2011-06-08 株式会社リコー Optical scanning apparatus, image forming apparatus, and image recording method
JP2002267972A (en) * 2001-03-14 2002-09-18 Ricoh Co Ltd Optical scanner and image forming device
JP4667624B2 (en) * 2001-03-14 2011-04-13 株式会社リコー Optical scanning apparatus and image forming apparatus
JP2003098459A (en) * 2001-09-26 2003-04-03 Ricoh Co Ltd Optical scanner and image forming apparatus

Also Published As

Publication number Publication date
JPS6053854B2 (en) 1985-11-27

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