JPS5655871A - Detecting device for electric potential - Google Patents
Detecting device for electric potentialInfo
- Publication number
- JPS5655871A JPS5655871A JP13207779A JP13207779A JPS5655871A JP S5655871 A JPS5655871 A JP S5655871A JP 13207779 A JP13207779 A JP 13207779A JP 13207779 A JP13207779 A JP 13207779A JP S5655871 A JPS5655871 A JP S5655871A
- Authority
- JP
- Japan
- Prior art keywords
- electric potential
- electrometer
- outputted
- led
- processed
- 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
Landscapes
- Control Or Security For Electrophotography (AREA)
Abstract
PURPOSE: To enable adjustment of a electrometer without using any outside meters by a method wherein the output of the surface electrometer is converted into a digital value and processed within a computer and is indicated in a LED on the basis of the designation.
CONSTITUTION: In the electrometer which detects the surface electric potential of a photosensitive drum for a reproducing device and the like 47, a chopper 83 is rotated by a motor 82 and synchronizing signals are outputted from the LED 84 and a phototransistor 87, while a surface electrocharge signl is outputted from an electrod 85. And, these signals are inputted in the computer CT7 built in an A/D converter and processed there, driving an indication circuit CT10 consisting of a group of LEDs, and are sent to a means for adjusting the surface electric potential. Accordingly, the electric potential can be inspected without using an outside voltmeter and the like and the electrometer can easily be adjusted by the output obtained through the intermediary of a level converting circuit CT9.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP13207779A JPS5655871A (en) | 1979-10-13 | 1979-10-13 | Detecting device for electric potential |
DE3038367A DE3038367C2 (en) | 1979-10-13 | 1980-10-10 | Electrophotographic device |
GB8032949A GB2061558B (en) | 1979-10-13 | 1980-10-13 | Digital computer display |
GB08319606A GB2131202B (en) | 1979-10-13 | 1983-07-20 | Electrophotographic copier |
US07/412,433 US5043765A (en) | 1979-10-13 | 1989-09-25 | Image forming apparatus including control means responsive to image forming conditions |
US08/035,885 US5357319A (en) | 1979-10-13 | 1993-03-23 | Image forming apparatus having image quality control |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP13207779A JPS5655871A (en) | 1979-10-13 | 1979-10-13 | Detecting device for electric potential |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5655871A true JPS5655871A (en) | 1981-05-16 |
Family
ID=15072963
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP13207779A Pending JPS5655871A (en) | 1979-10-13 | 1979-10-13 | Detecting device for electric potential |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5655871A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS60103364A (en) * | 1983-11-11 | 1985-06-07 | Fuji Xerox Co Ltd | Abnormality detector for electrostatic electrometer |
JPS61231570A (en) * | 1985-04-05 | 1986-10-15 | Sanyo Electric Co Ltd | Electrostatic recording device |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5062644A (en) * | 1973-10-01 | 1975-05-28 | ||
JPS5142542A (en) * | 1974-08-12 | 1976-04-10 | Xerox Corp | |
JPS5450329A (en) * | 1977-09-28 | 1979-04-20 | Ricoh Co Ltd | Copier control device using plural micro-computers |
-
1979
- 1979-10-13 JP JP13207779A patent/JPS5655871A/en active Pending
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5062644A (en) * | 1973-10-01 | 1975-05-28 | ||
JPS5142542A (en) * | 1974-08-12 | 1976-04-10 | Xerox Corp | |
JPS5450329A (en) * | 1977-09-28 | 1979-04-20 | Ricoh Co Ltd | Copier control device using plural micro-computers |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS60103364A (en) * | 1983-11-11 | 1985-06-07 | Fuji Xerox Co Ltd | Abnormality detector for electrostatic electrometer |
JPS61231570A (en) * | 1985-04-05 | 1986-10-15 | Sanyo Electric Co Ltd | Electrostatic recording device |
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