JPS57129457A - Electrophotographic device - Google Patents

Electrophotographic device

Info

Publication number
JPS57129457A
JPS57129457A JP56014825A JP1482581A JPS57129457A JP S57129457 A JPS57129457 A JP S57129457A JP 56014825 A JP56014825 A JP 56014825A JP 1482581 A JP1482581 A JP 1482581A JP S57129457 A JPS57129457 A JP S57129457A
Authority
JP
Japan
Prior art keywords
charge
photoreceptor
charger
electrode
power supply
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
JP56014825A
Other languages
Japanese (ja)
Inventor
Yoshio Morimura
Nobuyoshi Osagata
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.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial 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 Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP56014825A priority Critical patent/JPS57129457A/en
Publication of JPS57129457A publication Critical patent/JPS57129457A/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
    • G03G15/00—Apparatus for electrographic processes using a charge pattern
    • G03G15/50—Machine control of apparatus for electrographic processes using a charge pattern, e.g. regulating differents parts of the machine, multimode copiers, microprocessor control
    • G03G15/5033—Machine 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
    • G03G15/5037—Machine 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 achieve a prescribed amount of charge, by detecting the surface potential of a photoreceptor drum with an oscillation capacitance type potentiometer and controlling the power supply for charger. CONSTITUTION:When a shutter 3 is oscillated in about 10 cycles, a charge induced on an electrode 2 is changed with a charge 8 on a photoreceptor 4. An AC voltage generated to the electrode 2 is applied to the gate of a field effect transistor 1, then the gate current changes also, and the peak value is proportional to the surface potential of the photoreceptor. The power supply voltage of the charger is controlled so that the output signal of the transistor 1 reaches a reference value.
JP56014825A 1981-02-03 1981-02-03 Electrophotographic device Pending JPS57129457A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56014825A JPS57129457A (en) 1981-02-03 1981-02-03 Electrophotographic device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56014825A JPS57129457A (en) 1981-02-03 1981-02-03 Electrophotographic device

Publications (1)

Publication Number Publication Date
JPS57129457A true JPS57129457A (en) 1982-08-11

Family

ID=11871810

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56014825A Pending JPS57129457A (en) 1981-02-03 1981-02-03 Electrophotographic device

Country Status (1)

Country Link
JP (1) JPS57129457A (en)

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