JPS54150140A - Recorder - Google Patents
RecorderInfo
- 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
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
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)
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 |
-
1978
- 1978-05-17 JP JP5865178A patent/JPS6053854B2/en not_active Expired
Cited By (15)
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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