JPS57116369A - Controller for development bias voltage - Google Patents

Controller for development bias voltage

Info

Publication number
JPS57116369A
JPS57116369A JP287881A JP287881A JPS57116369A JP S57116369 A JPS57116369 A JP S57116369A JP 287881 A JP287881 A JP 287881A JP 287881 A JP287881 A JP 287881A JP S57116369 A JPS57116369 A JP S57116369A
Authority
JP
Japan
Prior art keywords
output
development bias
inverter
terminal
controller
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
JP287881A
Other languages
Japanese (ja)
Inventor
Koji Suzuki
Koki Kuroda
Joji Nagahira
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 JP287881A priority Critical patent/JPS57116369A/en
Publication of JPS57116369A publication Critical patent/JPS57116369A/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
    • G03G15/06—Apparatus for electrographic processes using a charge pattern for developing
    • G03G15/065—Arrangements for controlling the potential of the developing electrode

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Developing For Electrophotography (AREA)

Abstract

PURPOSE:To obtain a controller for a development bias voltage which follows up a control voltage with high precision, by partially feeding back the output of a DC-DC inverter to a differential amplifier supplied with the control voltage. CONSTITUTION:A negative-polarity output from a fixed-output DC-DC inverter 4 is superposed upon the positive-polarity output of a DC-DC inverter 3 to output a development bias voltage from a terminal 2. Further, a control signal is supplied from a terminal to the plus terminal of a differential amplifier 5 which controls the variable output inverter 3, and the output of the inverter 3 is voltage-divided and fed back to the minus terminal. Consequently, the development bias voltage developed at the terminal 2 follows up the control voltage with high precision. Thus, a development bias controller which follows up the control voltage with high precision is obtained.
JP287881A 1981-01-12 1981-01-12 Controller for development bias voltage Pending JPS57116369A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP287881A JPS57116369A (en) 1981-01-12 1981-01-12 Controller for development bias voltage

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP287881A JPS57116369A (en) 1981-01-12 1981-01-12 Controller for development bias voltage

Publications (1)

Publication Number Publication Date
JPS57116369A true JPS57116369A (en) 1982-07-20

Family

ID=11541605

Family Applications (1)

Application Number Title Priority Date Filing Date
JP287881A Pending JPS57116369A (en) 1981-01-12 1981-01-12 Controller for development bias voltage

Country Status (1)

Country Link
JP (1) JPS57116369A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6418165A (en) * 1987-07-13 1989-01-20 Konishiroku Photo Ind Developing bias generating circuit

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6418165A (en) * 1987-07-13 1989-01-20 Konishiroku Photo Ind Developing bias generating circuit

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