JPS57164761A - Optical device of copying machine - Google Patents
Optical device of copying machineInfo
- Publication number
- JPS57164761A JPS57164761A JP937682A JP937682A JPS57164761A JP S57164761 A JPS57164761 A JP S57164761A JP 937682 A JP937682 A JP 937682A JP 937682 A JP937682 A JP 937682A JP S57164761 A JPS57164761 A JP S57164761A
- Authority
- JP
- Japan
- Prior art keywords
- motor
- detecting
- optical elements
- rotating
- backward
- 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
Classifications
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
- G03G15/00—Apparatus for electrographic processes using a charge pattern
- G03G15/04—Apparatus for electrographic processes using a charge pattern for exposing, i.e. imagewise exposure by optically projecting the original image on a photoconductive recording material
- G03G15/041—Apparatus for electrographic processes using a charge pattern for exposing, i.e. imagewise exposure by optically projecting the original image on a photoconductive recording material with variable magnification
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Variable Magnification In Projection-Type Copying Machines (AREA)
- Optical Systems Of Projection Type Copiers (AREA)
- Exposure Or Original Feeding In Electrophotography (AREA)
Abstract
PURPOSE:To make constitution simple without the need for changing over of revolving directions to forward and backward directions and to improve accuracy by using a one way rotating and driving means, and detecting the rotating angle position of a one way rotating direction thereby detecting the position of an optical system. CONSTITUTION:This device has optical elements that can be moved forward and backward in order to change copying magnifications (a lens L, and mirrors M3, M4), a motor 14 which outputs one way rotating and driving force, a reduction gear train 21 which converts the one way rotating force from said motor 14 to forward and backward movements and transmits the same to said optical elements, a one way revolving shaft 23 which makes one turn as against the one forward and backward movement of the optical elements in accordance with the driving force from the motor 14, and microswitches MS 1-3 which detect that the shaft 23 has revolved to the rotating angle position corresponding to the selected magnification and stop the operation of the motor 14. The constitution is made simple and the accuracy is improved by using the motor 14, and detecting the position of the optical elements by detecting the rotating angle position of the shaft 23.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP937682A JPS57164761A (en) | 1982-01-22 | 1982-01-22 | Optical device of copying machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP937682A JPS57164761A (en) | 1982-01-22 | 1982-01-22 | Optical device of copying machine |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10797377A Division JPS5441723A (en) | 1977-09-09 | 1977-09-09 | Optical device for copier |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS57164761A true JPS57164761A (en) | 1982-10-09 |
Family
ID=11718732
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP937682A Pending JPS57164761A (en) | 1982-01-22 | 1982-01-22 | Optical device of copying machine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS57164761A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59178439A (en) * | 1983-03-21 | 1984-10-09 | ゼロツクス・コ−ポレ−シヨン | Image forming equipment having matching mechanism |
-
1982
- 1982-01-22 JP JP937682A patent/JPS57164761A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59178439A (en) * | 1983-03-21 | 1984-10-09 | ゼロツクス・コ−ポレ−シヨン | Image forming equipment having matching mechanism |
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