JPS5494836A - Pattern input unit - Google Patents
Pattern input unitInfo
- Publication number
- JPS5494836A JPS5494836A JP151878A JP151878A JPS5494836A JP S5494836 A JPS5494836 A JP S5494836A JP 151878 A JP151878 A JP 151878A JP 151878 A JP151878 A JP 151878A JP S5494836 A JPS5494836 A JP S5494836A
- Authority
- JP
- Japan
- Prior art keywords
- original
- white
- measurement
- electric conversion
- pattern
- 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
- Character Input (AREA)
- Image Input (AREA)
Abstract
PURPOSE: To avoid inaccuracy of pattern, information due to the dispersion in the photo electric conversion means, by providing the means automatically placing the white board on the original location, in the pattern input unit performing photo electric conversion for the pattern and letter information on the original.
CONSTITUTION: In measurement, the white plate 21 is turned automatically on the original location on the original stand 20 and the white surface 21a is opposed to the lnes 11. The light from the illumination means 9 is reflected on the white surface 2a and it reaches the photo detection element array 21 through the lens 11. Since the white surface 21a has the same reflection factor and hue as the standard original. The measurement of the output level variation of the photo detection element array 12 is enabled and it is possible to read in the original by correcting this variation. When the measurement is finished, the white plate 21 is restored to the dust proof cover 23 by rotation. After that, the original is moved to the original stand 20 with the feed rollers 4,5 and pinch rollers 6,7 and it is made for scanning photo electric conversion.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP151878A JPS5494836A (en) | 1978-01-12 | 1978-01-12 | Pattern input unit |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP151878A JPS5494836A (en) | 1978-01-12 | 1978-01-12 | Pattern input unit |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5494836A true JPS5494836A (en) | 1979-07-26 |
Family
ID=11503706
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP151878A Pending JPS5494836A (en) | 1978-01-12 | 1978-01-12 | Pattern input unit |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5494836A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS58153328A (en) * | 1982-03-09 | 1983-09-12 | Hitachi Ltd | Photodetecting sensitivity irregularity correcting system for image sensor |
-
1978
- 1978-01-12 JP JP151878A patent/JPS5494836A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS58153328A (en) * | 1982-03-09 | 1983-09-12 | Hitachi Ltd | Photodetecting sensitivity irregularity correcting system for image sensor |
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