JPS55154874A - Original reader - Google Patents
Original readerInfo
- Publication number
- JPS55154874A JPS55154874A JP6158079A JP6158079A JPS55154874A JP S55154874 A JPS55154874 A JP S55154874A JP 6158079 A JP6158079 A JP 6158079A JP 6158079 A JP6158079 A JP 6158079A JP S55154874 A JPS55154874 A JP S55154874A
- Authority
- JP
- Japan
- Prior art keywords
- original
- electric signal
- input
- laser beam
- adder
- 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
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
- H04N1/024—Details of scanning heads ; Means for illuminating the original
- H04N1/028—Details of scanning heads ; Means for illuminating the original for picture information pick-up
- H04N1/03—Details of scanning heads ; Means for illuminating the original for picture information pick-up with photodetectors arranged in a substantially linear array
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Facsimile Scanning Arrangements (AREA)
Abstract
PURPOSE:To remove or lessen an influence of stary light by constituting an arithmetic circuit so that an electric signal from a photo detector will selectively be added corresponding to the size of an original to be read. CONSTITUTION:The read original 13 samll in size, an input from key switch 22 opens switches 181 and 183 and closes 182. Then, when a laser beam stays near both X-directional end parts of an original holding part, stray light strikes optical fiber element groups 151 and 153 because of no original and photoelectric converting elements 161 and 163 output an electric signal corresponding to the quantity of the stray light. However, since switches 181 and 183 are left open, the outputs of amplifiers 171 and 173 are never input to analog adder 19. Next, when the laser beam is in the region of original 13, the laser beam strickes optical fiber elememt group 152 by scattering and reflecting from original 13. Therefore, an electric signal corresponding to shade information on original 13 is input to adder 19. On the other hand, although the stray light strike element groups 151 and 153, its electric signal is never input to adder 19.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP6158079A JPS55154874A (en) | 1979-05-21 | 1979-05-21 | Original reader |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP6158079A JPS55154874A (en) | 1979-05-21 | 1979-05-21 | Original reader |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP62199029A Division JPS63126359A (en) | 1987-08-11 | 1987-08-11 | Original reader |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS55154874A true JPS55154874A (en) | 1980-12-02 |
Family
ID=13175202
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP6158079A Pending JPS55154874A (en) | 1979-05-21 | 1979-05-21 | Original reader |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS55154874A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS60246169A (en) * | 1984-05-21 | 1985-12-05 | Matsushita Graphic Commun Syst Inc | Recording head |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5122307A (en) * | 1974-08-20 | 1976-02-23 | Oki Electric Ind Co Ltd | |
JPS51113425A (en) * | 1975-03-31 | 1976-10-06 | Nippon Telegr & Teleph Corp <Ntt> | Optical system for image sensor |
JPS5267210A (en) * | 1975-12-01 | 1977-06-03 | Toshiba Corp | Facsimile transmission equipment |
JPS5377119A (en) * | 1976-12-20 | 1978-07-08 | Nippon Telegr & Teleph Corp <Ntt> | Solid state scanning reader |
-
1979
- 1979-05-21 JP JP6158079A patent/JPS55154874A/en active Pending
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5122307A (en) * | 1974-08-20 | 1976-02-23 | Oki Electric Ind Co Ltd | |
JPS51113425A (en) * | 1975-03-31 | 1976-10-06 | Nippon Telegr & Teleph Corp <Ntt> | Optical system for image sensor |
JPS5267210A (en) * | 1975-12-01 | 1977-06-03 | Toshiba Corp | Facsimile transmission equipment |
JPS5377119A (en) * | 1976-12-20 | 1978-07-08 | Nippon Telegr & Teleph Corp <Ntt> | Solid state scanning reader |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS60246169A (en) * | 1984-05-21 | 1985-12-05 | Matsushita Graphic Commun Syst Inc | Recording head |
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