JPS6476019A - Optical device for image forming device - Google Patents
Optical device for image forming deviceInfo
- Publication number
- JPS6476019A JPS6476019A JP62232351A JP23235187A JPS6476019A JP S6476019 A JPS6476019 A JP S6476019A JP 62232351 A JP62232351 A JP 62232351A JP 23235187 A JP23235187 A JP 23235187A JP S6476019 A JPS6476019 A JP S6476019A
- Authority
- JP
- Japan
- Prior art keywords
- image
- scanning mirror
- variation
- image forming
- optical axis
- 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
Links
Landscapes
- Dot-Matrix Printers And Others (AREA)
- Laser Beam Printer (AREA)
- Mechanical Optical Scanning Systems (AREA)
- Facsimile Scanning Arrangements (AREA)
- Fax Reproducing Arrangements (AREA)
Abstract
PURPOSE:To reduce the variation of the image height on an image carrier and to improve an image quality by allowing the plural laser beams radiated on a scanning mirror to come near in parallel with an optical axis. CONSTITUTION:A diaphragm 36 which makes the center of the plural laser beams 27a, 27b parallel or condensed is set on the collimator lens 32 side of the scanning mirror 34. Consequently, the angle made by an incident light to the scanning mirror 34 and the optical axis is reduced to approach zero regardless of the variation of the length, from the prism compressor 33 to the scanning mirror 34, which is caused by the form of the mirror 34. On the image carrier 38, the variation of the image height of the laser beam is reduced or can be zero, the deviation of image is prevented, and the image quantity is improved.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62232351A JPS6476019A (en) | 1987-09-18 | 1987-09-18 | Optical device for image forming device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62232351A JPS6476019A (en) | 1987-09-18 | 1987-09-18 | Optical device for image forming device |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS6476019A true JPS6476019A (en) | 1989-03-22 |
Family
ID=16937845
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP62232351A Pending JPS6476019A (en) | 1987-09-18 | 1987-09-18 | Optical device for image forming device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6476019A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1992021069A1 (en) * | 1991-05-14 | 1992-11-26 | Seiko Epson Corporation | Image-forming device |
-
1987
- 1987-09-18 JP JP62232351A patent/JPS6476019A/en active Pending
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1992021069A1 (en) * | 1991-05-14 | 1992-11-26 | Seiko Epson Corporation | Image-forming device |
EP0697782A2 (en) * | 1991-05-14 | 1996-02-21 | Seiko Epson Corporation | Image forming apparatus |
US5610647A (en) * | 1991-05-14 | 1997-03-11 | Seigo Epson Corporation | Image forming apparatus including a plural laser beam scanning apparatus |
US6326992B1 (en) | 1991-05-14 | 2001-12-04 | Seiko Epson Corporation | Image forming apparatus |
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