JPS57147625A - Optical scanner - Google Patents
Optical scannerInfo
- Publication number
- JPS57147625A JPS57147625A JP3356181A JP3356181A JPS57147625A JP S57147625 A JPS57147625 A JP S57147625A JP 3356181 A JP3356181 A JP 3356181A JP 3356181 A JP3356181 A JP 3356181A JP S57147625 A JPS57147625 A JP S57147625A
- Authority
- JP
- Japan
- Prior art keywords
- drum
- original
- lens
- optical axis
- reflective mirrors
- 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
Classifications
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B27/00—Photographic printing apparatus
- G03B27/32—Projection printing apparatus, e.g. enlarger, copying camera
- G03B27/52—Details
- G03B27/522—Projection optics
- G03B27/525—Projection optics for slit exposure
- G03B27/526—Projection optics for slit exposure in which the projection optics move
Landscapes
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- General Physics & Mathematics (AREA)
- 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 separate a drum and a lens from each other spatially to make a reflective mirror small-size, by constituting a scanning system in the side of an image field so that the optical axis of incidence and the optical axis of exit are parallel by <=3 odd reflective mirrors and moving this optical system in the half of the moving speed of a photoreceptor. CONSTITUTION:The light of a slit region of an original 1 is projected onto a drum 5 through reflective mirrors 7, 8, and 9 and a light flux regulating member 6 by a lens 2. An optical axis R1 of incidence and an optical axis R2 of exit are set in parallel, and relfective mirrors 7, 8, and 9 constitute a scanning system, and these reflective mirrors are moved as one body in the direction of the tangent of movement of the drum 5 in the half of the peripheral speed of the drum 5, and the whole of the original is copied with the original 1 and the lens 2 fixed. A scanning system M consisting of reflective mirrors 7, 8, and 9 is moved in the direction of (x) for the original 1 and the lens system 2. In respect to the scanning system M, constituent reflective mirrors are moved as one body or are moved independently of one another.
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP3356181A JPS57147625A (en) | 1981-03-09 | 1981-03-09 | Optical scanner |
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 |
---|---|---|---|
JP3356181A JPS57147625A (en) | 1981-03-09 | 1981-03-09 | Optical scanner |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS57147625A true JPS57147625A (en) | 1982-09-11 |
JPH0216499B2 JPH0216499B2 (en) | 1990-04-17 |
Family
ID=12389954
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP3356181A Granted JPS57147625A (en) | 1981-03-09 | 1981-03-09 | Optical scanner |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS57147625A (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
- 1981-03-09 JP JP3356181A patent/JPS57147625A/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 |
---|---|
JPH0216499B2 (en) | 1990-04-17 |
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