JPS5625753A - Detector of original size - Google Patents
Detector of original sizeInfo
- Publication number
- JPS5625753A JPS5625753A JP10111479A JP10111479A JPS5625753A JP S5625753 A JPS5625753 A JP S5625753A JP 10111479 A JP10111479 A JP 10111479A JP 10111479 A JP10111479 A JP 10111479A JP S5625753 A JPS5625753 A JP S5625753A
- Authority
- JP
- Japan
- Prior art keywords
- electrodes
- original
- size
- nonconducting
- photodetectors
- 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
Abstract
PURPOSE: To enable discrimination of presence or absence of an original and its size to be automated, by providing electrodes or photodetectors opposite to each other outside the copying region of an original platen glass.
CONSTITUTION: Electrodes X1, Y1, and X2, Y2 are provided each opposite to each other on nonimage region A of glass 2 of original platen 1 and on original pressing cover 3. A detection signal of an original size is obtained by detecting conduction or nonconduction of electrodes X, Y disposed thus. For example, when the original is absent, electrodes X1-Y1 and X2-Y2 become conducting, and when it is of A4 size, electrodes X1-Y1 become conducting but X2-Y2 nonconducting. When it is of A3 size, electrodes X1-Y1 and X2-Y2 become both nonconducting. In addition, photodetectors are used in place of electrodes X, Y, a size of a thick original can be detected.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP10111479A JPS5625753A (en) | 1979-08-08 | 1979-08-08 | Detector of original size |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP10111479A JPS5625753A (en) | 1979-08-08 | 1979-08-08 | Detector of original size |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5625753A true JPS5625753A (en) | 1981-03-12 |
Family
ID=14292038
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP10111479A Pending JPS5625753A (en) | 1979-08-08 | 1979-08-08 | Detector of original size |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5625753A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS60169845A (en) * | 1984-02-14 | 1985-09-03 | Konishiroku Photo Ind Co Ltd | Original size detector of copying machine |
JPH01265270A (en) * | 1988-04-15 | 1989-10-23 | Sanyo Electric Co Ltd | Automatic detecting method for original size |
JPH0684627U (en) * | 1993-05-18 | 1994-12-02 | 小糸工業株式会社 | Lighting device mounting structure |
-
1979
- 1979-08-08 JP JP10111479A patent/JPS5625753A/en active Pending
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS60169845A (en) * | 1984-02-14 | 1985-09-03 | Konishiroku Photo Ind Co Ltd | Original size detector of copying machine |
JPH01265270A (en) * | 1988-04-15 | 1989-10-23 | Sanyo Electric Co Ltd | Automatic detecting method for original size |
JPH0684627U (en) * | 1993-05-18 | 1994-12-02 | 小糸工業株式会社 | Lighting device mounting structure |
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