JPS55164844A - Copying apparatus having black-color pressure plate - Google Patents
Copying apparatus having black-color pressure plateInfo
- Publication number
- JPS55164844A JPS55164844A JP7227879A JP7227879A JPS55164844A JP S55164844 A JPS55164844 A JP S55164844A JP 7227879 A JP7227879 A JP 7227879A JP 7227879 A JP7227879 A JP 7227879A JP S55164844 A JPS55164844 A JP S55164844A
- Authority
- JP
- Japan
- Prior art keywords
- original
- pressure
- black
- pressure plate
- portions
- 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)
- Facsimile Scanning Arrangements (AREA)
Abstract
PURPOSE:To enable the obtaining of good copies by detecting the size of the original area from the output signal of a means of converting light images to electric signals of a scanning read means and exposing the portions other than the original face as well as by providing a pressure plate of which the pressure contact surface is of a black color. CONSTITUTION:A scanning reader 10 which performs scanning and reading of data by making use of the light transmitted through the optical path of an exposure optical system, a synchronizing circuit, etc. are disposed in said optical system. A pressure plate 1 for fixing originals which has a black-color pressure-contact surface is used. As a result of this, if, for example, the original 0, is smaller than contact glass 2, the signal appearing in the reader 10 is generally white at the end of the original and therefore its level is high and the level of the portions off from the original 0 becomes low. By detecting the size of the original face and making the portions other than the same to a white level in this way, the staining of the pressure-contact surface is obviated from being copied.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7227879A JPS55164844A (en) | 1979-06-11 | 1979-06-11 | Copying apparatus having black-color pressure plate |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7227879A JPS55164844A (en) | 1979-06-11 | 1979-06-11 | Copying apparatus having black-color pressure plate |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS55164844A true JPS55164844A (en) | 1980-12-22 |
Family
ID=13484652
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP7227879A Pending JPS55164844A (en) | 1979-06-11 | 1979-06-11 | Copying apparatus having black-color pressure plate |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS55164844A (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6046576A (en) * | 1983-08-25 | 1985-03-13 | Canon Inc | Image forming device |
JPS616636A (en) * | 1984-06-21 | 1986-01-13 | Canon Inc | Image processor |
JPH02131662A (en) * | 1988-11-11 | 1990-05-21 | Fuji Xerox Co Ltd | Original position detection processing system for picture processor |
US7688477B2 (en) | 2005-11-08 | 2010-03-30 | Brother Kogyo Kabushiki Kaisha | Image reading apparatus, and method for detecting size of document |
-
1979
- 1979-06-11 JP JP7227879A patent/JPS55164844A/en active Pending
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6046576A (en) * | 1983-08-25 | 1985-03-13 | Canon Inc | Image forming device |
JPS616636A (en) * | 1984-06-21 | 1986-01-13 | Canon Inc | Image processor |
JPH02131662A (en) * | 1988-11-11 | 1990-05-21 | Fuji Xerox Co Ltd | Original position detection processing system for picture processor |
US7688477B2 (en) | 2005-11-08 | 2010-03-30 | Brother Kogyo Kabushiki Kaisha | Image reading apparatus, and method for detecting size of document |
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