JPS5638058A - Image comtrolling method - Google Patents
Image comtrolling methodInfo
- Publication number
- JPS5638058A JPS5638058A JP11125479A JP11125479A JPS5638058A JP S5638058 A JPS5638058 A JP S5638058A JP 11125479 A JP11125479 A JP 11125479A JP 11125479 A JP11125479 A JP 11125479A JP S5638058 A JPS5638058 A JP S5638058A
- Authority
- JP
- Japan
- Prior art keywords
- contrast
- image
- accordance
- switches
- sensor
- 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)
- Developing For Electrophotography (AREA)
- Control Or Security For Electrophotography (AREA)
Abstract
PURPOSE: To obtain a halftone image of high reproductivity by classifying original contrast into at least 3 kinds of low, medium, and high contrasts, and controlling exposure in accordance with a desired contrast.
CONSTITUTION: Three kinds of switches for high, medium and low contrast switches are provided in an image controller in order to select a copy image in accordance with the contrast of an original. In addition, said image controller is provided with sensor 10 for detecting surface potential of photoreceptor 1, amplifier 11 for amplifying said surface potential, operation control circuit 12, sensor 10, etc. Circuit 12 produces output signals for controlling development bias in reply to the sensor signals, and these bias controlling signals are adjusted with change-over means 14 including said change-over switches so as to apply adequate bias in accordance with the given contrast and to control exposure.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP11125479A JPS5638058A (en) | 1979-08-31 | 1979-08-31 | Image comtrolling method |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP11125479A JPS5638058A (en) | 1979-08-31 | 1979-08-31 | Image comtrolling method |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5638058A true JPS5638058A (en) | 1981-04-13 |
Family
ID=14556514
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP11125479A Pending JPS5638058A (en) | 1979-08-31 | 1979-08-31 | Image comtrolling method |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5638058A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS60218672A (en) * | 1984-04-16 | 1985-11-01 | Ricoh Co Ltd | Copying device |
JPS6311631U (en) * | 1986-07-09 | 1988-01-26 | ||
JP2008155927A (en) * | 2006-12-21 | 2008-07-10 | Hisaka Works Ltd | Tray used for sterilizing processing of plastic container |
-
1979
- 1979-08-31 JP JP11125479A patent/JPS5638058A/en active Pending
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS60218672A (en) * | 1984-04-16 | 1985-11-01 | Ricoh Co Ltd | Copying device |
JPS6311631U (en) * | 1986-07-09 | 1988-01-26 | ||
JP2008155927A (en) * | 2006-12-21 | 2008-07-10 | Hisaka Works Ltd | Tray used for sterilizing processing of plastic container |
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