JPS5648656A - Exposure method of electrophotographic apparatus - Google Patents

Exposure method of electrophotographic apparatus

Info

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
Application number
JP12583579A
Other languages
Japanese (ja)
Inventor
Akira Igarashi
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Koki Holdings Co Ltd
Original Assignee
Hitachi Koki Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Hitachi Koki Co Ltd filed Critical Hitachi Koki Co Ltd
Priority to JP12583579A priority Critical patent/JPS5648656A/en
Publication of JPS5648656A publication Critical patent/JPS5648656A/en
Pending legal-status Critical Current

Links

Landscapes

  • Exposure Or Original Feeding In Electrophotography (AREA)

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.
JP12583579A 1979-09-28 1979-09-28 Exposure method of electrophotographic apparatus Pending JPS5648656A (en)

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)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS53131848A (en) * 1977-04-22 1978-11-17 Hitachi Ltd Surface defect detector of photoreceptor

Patent Citations (1)

* Cited by examiner, † Cited by third party
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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