JPS5632152A - Image stabilizing method - Google Patents

Image stabilizing method

Info

Publication number
JPS5632152A
JPS5632152A JP10773479A JP10773479A JPS5632152A JP S5632152 A JPS5632152 A JP S5632152A JP 10773479 A JP10773479 A JP 10773479A JP 10773479 A JP10773479 A JP 10773479A JP S5632152 A JPS5632152 A JP S5632152A
Authority
JP
Japan
Prior art keywords
charging
bias light
light source
change
signal enters
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
JP10773479A
Other languages
Japanese (ja)
Inventor
Hatsuo Tajima
Kimio Nakahata
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.)
Canon Inc
Original Assignee
Canon Inc
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 Canon Inc filed Critical Canon Inc
Priority to JP10773479A priority Critical patent/JPS5632152A/en
Publication of JPS5632152A publication Critical patent/JPS5632152A/en
Pending legal-status Critical Current

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  • Control Or Security For Electrophotography (AREA)

Abstract

PURPOSE: To prevent the change in image density at the continuous copying by applying predetermined quantity of bias light to image exposure light according to the pause period of a photoreceptor and changing the same according to the number of copies.
CONSTITUTION: When the drum rotation signal enters the terminal T1 of a bias light source lighting voltage control timer circuit, charging of a capacitor C1 is accomplished via a transistor Q2, to cause a transistor Q3 to operate. On progression of charging of the capacitor C1, the bias light source lighting voltage returns to the voltage not controlled. When the drum stop signal enters the terminal T1, the TRs Q1, Q2 stop operating and the charging voltage of C1 starts discharging. When the drum rotation signal enters during discharging, C1 again starts charging. Thereupon if the time until the bias light source lighting voltage reaches saturation is set shorter than the time during copying suspension, the dark part latent image potential coverges nearly to a fixed value in continuous copying and the change in density does not occur. With such constitution, the change in the image density at the continuous copying may be prevented.
COPYRIGHT: (C)1981,JPO&Japio
JP10773479A 1979-08-24 1979-08-24 Image stabilizing method Pending JPS5632152A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP10773479A JPS5632152A (en) 1979-08-24 1979-08-24 Image stabilizing method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10773479A JPS5632152A (en) 1979-08-24 1979-08-24 Image stabilizing method

Publications (1)

Publication Number Publication Date
JPS5632152A true JPS5632152A (en) 1981-04-01

Family

ID=14466587

Family Applications (1)

Application Number Title Priority Date Filing Date
JP10773479A Pending JPS5632152A (en) 1979-08-24 1979-08-24 Image stabilizing method

Country Status (1)

Country Link
JP (1) JPS5632152A (en)

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