JPS57116369A - Controller for development bias voltage - Google Patents
Controller for development bias voltageInfo
- 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
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.
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)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6418165A (en) * | 1987-07-13 | 1989-01-20 | Konishiroku Photo Ind | Developing bias generating circuit |
-
1981
- 1981-01-12 JP JP287881A patent/JPS57116369A/en active Pending
Cited By (1)
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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