JPS5517174A - Image stabilizing method - Google Patents
Image stabilizing methodInfo
- Publication number
- JPS5517174A JPS5517174A JP9058778A JP9058778A JPS5517174A JP S5517174 A JPS5517174 A JP S5517174A JP 9058778 A JP9058778 A JP 9058778A JP 9058778 A JP9058778 A JP 9058778A JP S5517174 A JPS5517174 A JP S5517174A
- Authority
- JP
- Japan
- Prior art keywords
- images
- corona discharger
- voltage
- drum
- thru
- 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
- Control Or Security For Electrophotography (AREA)
- Electrophotography Using Other Than Carlson'S Method (AREA)
Abstract
PURPOSE: To form stable images without any effect of fluctuations of charging conditions by controlling the staircase form applied voltage, developing bias voltage, etc. corresponding to the electrostatic contrast functions to a corona discharger according to the detection of electrostatic latent image potentials.
CONSTITUTION: Discharging of polarity opposite from that of a discharger 2 by a secondary corona discharger 3 which is evenly charged by the primary corona discharger 2 and whose back face is optically open and the radiation of image light cause latent images to be formed on a photosensitive drum 1. The potentials of the bright and dark parts of the latent images are detected with a potential detecting probe 6 and are applied via A/D converter 14 to a control part 15 to which the signal corresponding to the turning position of the drum 1 by a drum rotation pulse generator 12 is applied. The control part 15 controls the staircase form applied voltage, bias voltage for developing device 7, etc. corresponding to the contrast functions by way of D/A converters 16 thru 18, control voltage sources 19 thru 21, etc. Hence, the good images of good contrast free from fog, etc. are formed without the effect of ambient conditions such as temperature, etc.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9058778A JPS5517174A (en) | 1978-07-25 | 1978-07-25 | Image stabilizing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9058778A JPS5517174A (en) | 1978-07-25 | 1978-07-25 | Image stabilizing method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5517174A true JPS5517174A (en) | 1980-02-06 |
Family
ID=14002574
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9058778A Pending JPS5517174A (en) | 1978-07-25 | 1978-07-25 | Image stabilizing method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5517174A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5723957A (en) * | 1980-07-18 | 1982-02-08 | Hitachi Koki Co Ltd | Electrophotographic device |
| US5173734A (en) * | 1990-03-19 | 1992-12-22 | Minolta Camera Kabushiki Kaisha | Image forming apparatus using measured data to adjust the operation level |
| JP2008026738A (en) * | 2006-07-24 | 2008-02-07 | Sharp Corp | Image forming apparatus |
-
1978
- 1978-07-25 JP JP9058778A patent/JPS5517174A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5723957A (en) * | 1980-07-18 | 1982-02-08 | Hitachi Koki Co Ltd | Electrophotographic device |
| US5173734A (en) * | 1990-03-19 | 1992-12-22 | Minolta Camera Kabushiki Kaisha | Image forming apparatus using measured data to adjust the operation level |
| JP2008026738A (en) * | 2006-07-24 | 2008-02-07 | Sharp Corp | Image forming apparatus |
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