JPS5648656A - Exposure method of electrophotographic apparatus - Google Patents
Exposure method of electrophotographic apparatusInfo
- Publication number
- JPS5648656A JPS5648656A JP12583579A JP12583579A JPS5648656A JP S5648656 A JPS5648656 A JP S5648656A JP 12583579 A JP12583579 A JP 12583579A JP 12583579 A JP12583579 A JP 12583579A JP S5648656 A JPS5648656 A JP S5648656A
- Authority
- JP
- Japan
- Prior art keywords
- data
- signal
- flaw
- photosensitive drum
- parts
- 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
Abstract
PURPOSE:To achieve the improvement in the utilization rate of a photosensitive drum by detecting the parts of the flaws produced on a photosensitive drum prior to printing and executing printing sequence from the parts where no flaws exist. CONSTITUTION:A predetermined range B where there is a flaw A on a photosensitive drum 1 is visually determined by using a scale 4 and the data of the range B is sent to a memory circuit 5 via an encoder 2 and a detector 3. The stored data and the output data of the detector 3 are compared 6 and the signal F corresponding to the flaw A is obtained. When the signal F is obtained during photoscanning with the 1st data E, the new signal G adding white paper data G' to the signal E corresponding to the signal F is made so that the intrinsic data are not latent-imaged to the parts of the flaw. Further, at the transferring, transfer is made only when the data corresponds to the high level of the signal H.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP12583579A JPS5648656A (en) | 1979-09-28 | 1979-09-28 | Exposure method of electrophotographic apparatus |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP12583579A JPS5648656A (en) | 1979-09-28 | 1979-09-28 | Exposure method of electrophotographic apparatus |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5648656A true JPS5648656A (en) | 1981-05-01 |
Family
ID=14920107
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP12583579A Pending JPS5648656A (en) | 1979-09-28 | 1979-09-28 | Exposure method of electrophotographic apparatus |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5648656A (en) |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS53131848A (en) * | 1977-04-22 | 1978-11-17 | Hitachi Ltd | Surface defect detector of photoreceptor |
-
1979
- 1979-09-28 JP JP12583579A patent/JPS5648656A/en active Pending
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS53131848A (en) * | 1977-04-22 | 1978-11-17 | Hitachi Ltd | Surface defect detector of photoreceptor |
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