JPS57129453A - Multi-mode copying machine - Google Patents
Multi-mode copying machineInfo
- Publication number
- JPS57129453A JPS57129453A JP56016205A JP1620581A JPS57129453A JP S57129453 A JPS57129453 A JP S57129453A JP 56016205 A JP56016205 A JP 56016205A JP 1620581 A JP1620581 A JP 1620581A JP S57129453 A JPS57129453 A JP S57129453A
- Authority
- JP
- Japan
- Prior art keywords
- potentiometer
- probe
- potential
- output
- place
- 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
- 239000000523 sample Substances 0.000 abstract 3
- 230000002159 abnormal effect Effects 0.000 abstract 1
- 108091008695 photoreceptors Proteins 0.000 abstract 1
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
Landscapes
- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Control Or Security For Electrophotography (AREA)
- Discharging, Photosensitive Material Shape In Electrophotography (AREA)
Abstract
PURPOSE:To achieve operation even at failure of a probe, by inputting a specified reference signal to a control means, in place of an output signal of a surface potentiometer. CONSTITUTION:A potential on the surface of a photoreceptor drum 11 is detected with a surface potentiometer 26 having a probe 14, an operation circuit 24 calculates exposure and charging amount to obtain the best picture based on the potential, allowing to control a light source power supply 22 and charger power supply 23. If an output of the potentiometer 26 shows an abnormal value, it is judged that a trouble such as attached toner on the probe 14 takes place, and a switch 25 is selected. A specified reference potential is applied to the circuit 24 in place of the output of the potentiometer 26, and copying can be kept with a degree of video quality.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP56016205A JPS57129453A (en) | 1981-02-05 | 1981-02-05 | Multi-mode copying machine |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP56016205A JPS57129453A (en) | 1981-02-05 | 1981-02-05 | Multi-mode copying machine |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS57129453A true JPS57129453A (en) | 1982-08-11 |
Family
ID=11910006
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP56016205A Pending JPS57129453A (en) | 1981-02-05 | 1981-02-05 | Multi-mode copying machine |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS57129453A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS58209755A (en) * | 1982-05-31 | 1983-12-06 | Canon Inc | Image formation |
JPS60257457A (en) * | 1984-06-05 | 1985-12-19 | Fuji Xerox Co Ltd | Control method of automatic density adjustment |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5695249A (en) * | 1979-12-28 | 1981-08-01 | Canon Inc | Image forming device |
JPS5695251A (en) * | 1979-12-28 | 1981-08-01 | Canon Inc | Electrostatic recorder |
JPS5695254A (en) * | 1979-12-28 | 1981-08-01 | Canon Inc | Electrostatic recorder |
-
1981
- 1981-02-05 JP JP56016205A patent/JPS57129453A/en active Pending
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5695249A (en) * | 1979-12-28 | 1981-08-01 | Canon Inc | Image forming device |
JPS5695251A (en) * | 1979-12-28 | 1981-08-01 | Canon Inc | Electrostatic recorder |
JPS5695254A (en) * | 1979-12-28 | 1981-08-01 | Canon Inc | Electrostatic recorder |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS58209755A (en) * | 1982-05-31 | 1983-12-06 | Canon Inc | Image formation |
JPS60257457A (en) * | 1984-06-05 | 1985-12-19 | Fuji Xerox Co Ltd | Control method of automatic density adjustment |
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