JPS5677863A - Copying machine provided with automatic mask device - Google Patents
Copying machine provided with automatic mask deviceInfo
- Publication number
- JPS5677863A JPS5677863A JP15507379A JP15507379A JPS5677863A JP S5677863 A JPS5677863 A JP S5677863A JP 15507379 A JP15507379 A JP 15507379A JP 15507379 A JP15507379 A JP 15507379A JP S5677863 A JPS5677863 A JP S5677863A
- Authority
- JP
- Japan
- Prior art keywords
- original
- size
- circuit
- copying machine
- pulse signals
- 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
- Holders For Sensitive Materials And Originals (AREA)
- Exposure Or Original Feeding In Electrophotography (AREA)
Abstract
PURPOSE: To enable an original size to be easily detected by automatically masking a contact glass on its under surface side, and detecting the original size by utilizing the moving time of mask plates.
CONSTITUTION: An original size detecting circuit 2, which consists of an AND circuit 27, and a counter 28, counts the pulse signals of a fixed frequency only while a mask plate drive control unit 22 is moving the 1st mask plate forward from its home position, to detect the size of the original. More specifically, the pulse signals Sp of a fixed frequency fed from a copying machine control part 21 and the Q signal (a) of an FF26 of a motor control circuit 23 are inputted to the AND circuit 27, and only while the signal (a) is being outputted from the FF26, the pulse signals Sp pass through an AND circuit 27 and since the pulse number of the signals Sp corresponds to the size of the original, a counter 28 counts this pulse number, enabling the size of the original to be detected.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP15507379A JPS5677863A (en) | 1979-11-30 | 1979-11-30 | Copying machine provided with automatic mask device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP15507379A JPS5677863A (en) | 1979-11-30 | 1979-11-30 | Copying machine provided with automatic mask device |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5677863A true JPS5677863A (en) | 1981-06-26 |
Family
ID=15598055
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP15507379A Pending JPS5677863A (en) | 1979-11-30 | 1979-11-30 | Copying machine provided with automatic mask device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5677863A (en) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS60260940A (en) * | 1984-06-08 | 1985-12-24 | Fuji Xerox Co Ltd | Device for automatically detecting size of original |
JPS619639A (en) * | 1984-06-26 | 1986-01-17 | Fuji Xerox Co Ltd | Light shielding device for copying device |
JPS61210343A (en) * | 1985-03-15 | 1986-09-18 | Fuji Xerox Co Ltd | Automatic original size detector for copying machine |
JPS61188142U (en) * | 1985-05-14 | 1986-11-22 | ||
JPS61203741U (en) * | 1985-06-11 | 1986-12-22 |
-
1979
- 1979-11-30 JP JP15507379A patent/JPS5677863A/en active Pending
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS60260940A (en) * | 1984-06-08 | 1985-12-24 | Fuji Xerox Co Ltd | Device for automatically detecting size of original |
JPS619639A (en) * | 1984-06-26 | 1986-01-17 | Fuji Xerox Co Ltd | Light shielding device for copying device |
JPS61210343A (en) * | 1985-03-15 | 1986-09-18 | Fuji Xerox Co Ltd | Automatic original size detector for copying machine |
JPS61188142U (en) * | 1985-05-14 | 1986-11-22 | ||
JPS61203741U (en) * | 1985-06-11 | 1986-12-22 |
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