JPS57197575A - Optical scanning device - Google Patents
Optical scanning deviceInfo
- Publication number
- JPS57197575A JPS57197575A JP8268181A JP8268181A JPS57197575A JP S57197575 A JPS57197575 A JP S57197575A JP 8268181 A JP8268181 A JP 8268181A JP 8268181 A JP8268181 A JP 8268181A JP S57197575 A JPS57197575 A JP S57197575A
- Authority
- JP
- Japan
- Prior art keywords
- prism
- drum
- optical axis
- scanning system
- original
- 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
- Exposure Or Original Feeding In Electrophotography (AREA)
- Optical Systems Of Projection Type Copiers (AREA)
- Light Sources And Details Of Projection-Printing Devices (AREA)
Abstract
PURPOSE: To constitute a compact scanning system, by borning a scanning system a prism.
CONSTITUTION: A slit region of an original 1 is projected on a drum 5 through an luminous flux restricting member 6 with a lens 2 via a prism 10. An incident optical axis R1 and an emitting optical axis R2 are set in parallel, the prism 10 constitutes the scanning system and they are moved toward the same direction of the drum 5 in a speed a half the circumference speed of the drum toward the moving tangential direction of the drum 5, i.e., vertically to the optical axis. Thus, the entire original is copied while the original 1 and the lens 2 are fixed. In the example of this execution, the prism is a Dove prism and the reflecting plane is set in parallel with the optical axis.
COPYRIGHT: (C)1982,JPO&Japio
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8268181A JPS57197575A (en) | 1981-05-29 | 1981-05-29 | Optical scanning device |
US06/352,713 US4447147A (en) | 1981-03-09 | 1982-02-26 | Optical scanning device |
DE19823208264 DE3208264A1 (en) | 1981-03-09 | 1982-03-08 | OPTICAL SCANNER |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8268181A JPS57197575A (en) | 1981-05-29 | 1981-05-29 | Optical scanning device |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS57197575A true JPS57197575A (en) | 1982-12-03 |
JPH0219935B2 JPH0219935B2 (en) | 1990-05-07 |
Family
ID=13781159
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP8268181A Granted JPS57197575A (en) | 1981-03-09 | 1981-05-29 | Optical scanning device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS57197575A (en) |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS54122132A (en) * | 1978-03-16 | 1979-09-21 | Ricoh Co Ltd | Slit exposure method for photreceptor in copier |
-
1981
- 1981-05-29 JP JP8268181A patent/JPS57197575A/en active Granted
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS54122132A (en) * | 1978-03-16 | 1979-09-21 | Ricoh Co Ltd | Slit exposure method for photreceptor in copier |
Also Published As
Publication number | Publication date |
---|---|
JPH0219935B2 (en) | 1990-05-07 |
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