JPS5727265A - Copying apparatus - Google Patents

Copying apparatus

Info

Publication number
JPS5727265A
JPS5727265A JP10191480A JP10191480A JPS5727265A JP S5727265 A JPS5727265 A JP S5727265A JP 10191480 A JP10191480 A JP 10191480A JP 10191480 A JP10191480 A JP 10191480A JP S5727265 A JPS5727265 A JP S5727265A
Authority
JP
Japan
Prior art keywords
voltage
driving
primary
developing bias
microcomputer
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
JP10191480A
Other languages
Japanese (ja)
Other versions
JPH0411864B2 (en
Inventor
Koki Kuroda
Koji Suzuki
Joji Nagahira
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 JP55101914A priority Critical patent/JPH0411864B2/ja
Publication of JPS5727265A publication Critical patent/JPS5727265A/en
Publication of JPH0411864B2 publication Critical patent/JPH0411864B2/ja
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • GPHYSICS
    • G03PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03GELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G15/00Apparatus for electrographic processes using a charge pattern
    • G03G15/50Machine control of apparatus for electrographic processes using a charge pattern, e.g. regulating differents parts of the machine, multimode copiers, microprocessor control
    • G03G15/5033Machine control of apparatus for electrographic processes using a charge pattern, e.g. regulating differents parts of the machine, multimode copiers, microprocessor control by measuring the photoconductor characteristics, e.g. temperature, or the characteristics of an image on the photoconductor
    • G03G15/5037Machine control of apparatus for electrographic processes using a charge pattern, e.g. regulating differents parts of the machine, multimode copiers, microprocessor control by measuring the photoconductor characteristics, e.g. temperature, or the characteristics of an image on the photoconductor the characteristics being an electrical parameter, e.g. voltage

Abstract

PURPOSE:To make frequency components common, and to enhance noise resistance, by driving the oscillation circuit of a high voltage generating means in synchronism to clock pulses for driving a microcomputer. CONSTITUTION:A microcomputer 4 receives latent image surface potential, calculates primary and secondary charging current values, and an optimum developing bias value, and drives the high voltage transformers of primary and secondary high voltage sources 7, 9 through high voltage driving circuits 6, 8 to feed charging currents to primary and secondary chargers 16, 17. A developing bias driving circuit 10 drives a high voltage source 11 for developing bias to add a prescribed bias to a developing roller 18. On the other hand, clock pulses having proper frequency are delivered through buffer circuits to driving circuits 13, 14, 15 to start oscillation of each high voltage source 7, 9, 11.
JP55101914A 1980-07-25 1980-07-25 Expired - Lifetime JPH0411864B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP55101914A JPH0411864B2 (en) 1980-07-25 1980-07-25

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP55101914A JPH0411864B2 (en) 1980-07-25 1980-07-25

Publications (2)

Publication Number Publication Date
JPS5727265A true JPS5727265A (en) 1982-02-13
JPH0411864B2 JPH0411864B2 (en) 1992-03-02

Family

ID=14313170

Family Applications (1)

Application Number Title Priority Date Filing Date
JP55101914A Expired - Lifetime JPH0411864B2 (en) 1980-07-25 1980-07-25

Country Status (1)

Country Link
JP (1) JPH0411864B2 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6149582U (en) * 1984-09-05 1986-04-03
FR2589594A1 (en) * 1985-11-04 1987-05-07 Savin Corp CHARGE AND POLARIZATION APPARATUS FOR ELECTROPHOTOGRAPHIC COPIER

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS52147756A (en) * 1976-06-04 1977-12-08 Ricoh Co Ltd Zero volt trigger method in ac load
JPS53119037A (en) * 1977-03-26 1978-10-18 Canon Inc Forming method of image
JPS53148921A (en) * 1977-05-31 1978-12-26 Canon Inc Power unit
JPS53149626A (en) * 1977-05-31 1978-12-27 Canon Inc Power source system
JPS54129457A (en) * 1978-03-31 1979-10-06 Ricoh Co Ltd Sc voltage control system
JPS5529228A (en) * 1978-08-17 1980-03-01 Mitsubishi Electric Corp Switching regulator for pcm device

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS52147756A (en) * 1976-06-04 1977-12-08 Ricoh Co Ltd Zero volt trigger method in ac load
JPS53119037A (en) * 1977-03-26 1978-10-18 Canon Inc Forming method of image
JPS53148921A (en) * 1977-05-31 1978-12-26 Canon Inc Power unit
JPS53149626A (en) * 1977-05-31 1978-12-27 Canon Inc Power source system
JPS54129457A (en) * 1978-03-31 1979-10-06 Ricoh Co Ltd Sc voltage control system
JPS5529228A (en) * 1978-08-17 1980-03-01 Mitsubishi Electric Corp Switching regulator for pcm device

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6149582U (en) * 1984-09-05 1986-04-03
FR2589594A1 (en) * 1985-11-04 1987-05-07 Savin Corp CHARGE AND POLARIZATION APPARATUS FOR ELECTROPHOTOGRAPHIC COPIER

Also Published As

Publication number Publication date
JPH0411864B2 (en) 1992-03-02

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