JPS6480160A - Method and apparatus for lighting control of lighting source in close contact image sensor - Google Patents
Method and apparatus for lighting control of lighting source in close contact image sensorInfo
- Publication number
- JPS6480160A JPS6480160A JP62238175A JP23817587A JPS6480160A JP S6480160 A JPS6480160 A JP S6480160A JP 62238175 A JP62238175 A JP 62238175A JP 23817587 A JP23817587 A JP 23817587A JP S6480160 A JPS6480160 A JP S6480160A
- Authority
- JP
- Japan
- Prior art keywords
- lighting
- image sensor
- contact image
- lighting source
- close contact
- 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
- Facsimile Scanning Arrangements (AREA)
Abstract
PURPOSE:To lower a cost of close-contact image sensor with high sensitivity by lighting intermittently a lighting source so as to adjust the exposure thereby not saturating the photoelectric conversion output. CONSTITUTION:A monostable multivibrator 11 generates a control pulse having a specified time width based on a pulse inputted from a control circuit 10 and gives it to a lighting circuit 12. The lighting circuit 12 outputs the drive current based on the control pulse to light intermittently the lighting source 13. Thus, the close-contact image sensor with high sensitivity is attained without increas ing the capacitance of a sensor device, without decreasing the luminous quantity of an LED array and charging components used in a conventional sensor.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62238175A JPS6480160A (en) | 1987-09-22 | 1987-09-22 | Method and apparatus for lighting control of lighting source in close contact image sensor |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62238175A JPS6480160A (en) | 1987-09-22 | 1987-09-22 | Method and apparatus for lighting control of lighting source in close contact image sensor |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS6480160A true JPS6480160A (en) | 1989-03-27 |
Family
ID=17026289
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP62238175A Pending JPS6480160A (en) | 1987-09-22 | 1987-09-22 | Method and apparatus for lighting control of lighting source in close contact image sensor |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6480160A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2009005292A (en) * | 2007-06-25 | 2009-01-08 | Brother Ind Ltd | Image reading apparatus |
JP2009060491A (en) * | 2007-09-03 | 2009-03-19 | Seiko Epson Corp | Image reading apparatus, and image reading method |
JP2015043529A (en) * | 2013-08-26 | 2015-03-05 | シャープ株式会社 | Image reader and image formation apparatus with the same |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6298860A (en) * | 1985-10-24 | 1987-05-08 | Matsushita Graphic Commun Syst Inc | Image processor |
-
1987
- 1987-09-22 JP JP62238175A patent/JPS6480160A/en active Pending
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6298860A (en) * | 1985-10-24 | 1987-05-08 | Matsushita Graphic Commun Syst Inc | Image processor |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2009005292A (en) * | 2007-06-25 | 2009-01-08 | Brother Ind Ltd | Image reading apparatus |
JP2009060491A (en) * | 2007-09-03 | 2009-03-19 | Seiko Epson Corp | Image reading apparatus, and image reading method |
JP2015043529A (en) * | 2013-08-26 | 2015-03-05 | シャープ株式会社 | Image reader and image formation apparatus with the same |
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