JPS5738466A - Electrophotographic method - Google Patents

Electrophotographic method

Info

Publication number
JPS5738466A
JPS5738466A JP11513180A JP11513180A JPS5738466A JP S5738466 A JPS5738466 A JP S5738466A JP 11513180 A JP11513180 A JP 11513180A JP 11513180 A JP11513180 A JP 11513180A JP S5738466 A JPS5738466 A JP S5738466A
Authority
JP
Japan
Prior art keywords
copying
photoreceptor
carrying
difference
copy mode
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
JP11513180A
Other languages
Japanese (ja)
Inventor
Koji Goto
Isamu Kajita
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 JP11513180A priority Critical patent/JPS5738466A/en
Publication of JPS5738466A publication Critical patent/JPS5738466A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G21/00—Arrangements not provided for by groups G03G13/00 - G03G19/00, e.g. cleaning, elimination of residual charge
    • G03G21/06—Eliminating residual charges from a reusable imaging member
    • G03G21/08—Eliminating residual charges from a reusable imaging member using optical radiation

Abstract

PURPOSE:To eliminate the difference of density of an image due to the difference of the copying speed, by varying the irradiation of light of the pre-exposure in accordance with the copying speed and thus carrying out a control so as to ensure nearly a constant amount of free carrier within a photoreceptor when the photoreceptor is charged. CONSTITUTION:A pre-irradiating light source 25 is put between a cleaning means 11 and a primary charger 2 so as to irradiate the surface of a photosensitive drum 1. When carrying out the copying, the copy modes such as the equal size, reduction, magnification, etc. are selected by means of a copy mode changeover switch. The degree of light irradiation is set weak ad strong with a high and low speeds of copying respectively and synchronously with decision of the copying speed corresponding to the selected copy mode. In such way, the copying having an almost equal image density is obtained.
JP11513180A 1980-08-20 1980-08-20 Electrophotographic method Pending JPS5738466A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11513180A JPS5738466A (en) 1980-08-20 1980-08-20 Electrophotographic method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11513180A JPS5738466A (en) 1980-08-20 1980-08-20 Electrophotographic method

Publications (1)

Publication Number Publication Date
JPS5738466A true JPS5738466A (en) 1982-03-03

Family

ID=14655037

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11513180A Pending JPS5738466A (en) 1980-08-20 1980-08-20 Electrophotographic method

Country Status (1)

Country Link
JP (1) JPS5738466A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2477075A1 (en) * 2009-09-10 2012-07-18 Canon Kabushiki Kaisha An image forming device

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2477075A1 (en) * 2009-09-10 2012-07-18 Canon Kabushiki Kaisha An image forming device
EP2477075A4 (en) * 2009-09-10 2013-05-29 Canon Kk An image forming device

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