JPS5459940A - Variable power copying apparatus - Google Patents
Variable power copying apparatusInfo
- Publication number
- JPS5459940A JPS5459940A JP1433578A JP1433578A JPS5459940A JP S5459940 A JPS5459940 A JP S5459940A JP 1433578 A JP1433578 A JP 1433578A JP 1433578 A JP1433578 A JP 1433578A JP S5459940 A JPS5459940 A JP S5459940A
- Authority
- JP
- Japan
- Prior art keywords
- photo detectors
- signals
- controlled
- moving distance
- variable power
- 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
- Variable Magnification In Projection-Type Copying Machines (AREA)
Abstract
PURPOSE: To eliminate wasteful movement and improve copying efficiency by changing the moving distance of image scanning system according to the selected magnification.
CONSTITUTION: Forward and backward clutches 33, 34 which transmit the revolutions of a motor 30 to a photosensitive drum 25 and film carrier base 12 are controlled by a detector 69 which consists of a lever 72 turned about a pin 71 by the movement of the film carrier base 12, photo detectors 72a thru 72e, etc. and controls the moving distance of the film and adjusts the exposure start position. Then, if the selected magnification is low, the forward and backward clutches 33, 34 are controlled by the signals from the photo detectors 72a, 72e, the exposure start position is determined by the signal from the photo detector 72a and the moving distance is determined by the signals from the photo detectors 72a, 72e. If it is high, these are controlled by the signals from the photo detectors 72b, 72d
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1433578A JPS5459940A (en) | 1978-02-09 | 1978-02-09 | Variable power copying apparatus |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1433578A JPS5459940A (en) | 1978-02-09 | 1978-02-09 | Variable power copying apparatus |
Related Parent Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2349174A Division JPS5437825B2 (en) | 1974-02-27 | 1974-02-27 |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5459940A true JPS5459940A (en) | 1979-05-15 |
Family
ID=11858188
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP1433578A Pending JPS5459940A (en) | 1978-02-09 | 1978-02-09 | Variable power copying apparatus |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5459940A (en) |
-
1978
- 1978-02-09 JP JP1433578A patent/JPS5459940A/en active Pending
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