JPS5536856A - High voltage power source device for electrophotographic copier - Google Patents

High voltage power source device for electrophotographic copier

Info

Publication number
JPS5536856A
JPS5536856A JP11014478A JP11014478A JPS5536856A JP S5536856 A JPS5536856 A JP S5536856A JP 11014478 A JP11014478 A JP 11014478A JP 11014478 A JP11014478 A JP 11014478A JP S5536856 A JPS5536856 A JP S5536856A
Authority
JP
Japan
Prior art keywords
reference voltage
voltage generating
high voltage
generating circuit
power source
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
JP11014478A
Other languages
Japanese (ja)
Inventor
Hikojiro Baba
Masafumi Nakamura
Tetsusaburo Honma
Yoshio Morimura
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 JP11014478A priority Critical patent/JPS5536856A/en
Publication of JPS5536856A publication Critical patent/JPS5536856A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE: To obtain stable surface potentials of photoreceptor and images by correcting reference voltage in correspondence to environmental changes.
CONSTITUTION: A sensor 8 which detects environmental changes such as humidity, temperature and atmospheric pressure is disposed near a corona discharge part 3 and is connected to a reference voltage generating circuit 9. Then, the current or voltage of a high voltage generating unit 2 is detected by a detector 7 and is compared with the reference voltage of the reference voltage generating circuit 9 in a subtractor 10 and comparing amplifier 11, causing a driving circuit 1 to be controlled via control circuit 12 so as to provide the constant current or constant voltage. The environmental change near the corona discharge part 3 is detected by the sensor 8 and the reference voltage of the reference voltage generating circuit 9 is corrected. Hence, always stable surface potentials of a photoreceptor 4 may be obtained and the superior copying images are formed.
COPYRIGHT: (C)1980,JPO&Japio
JP11014478A 1978-09-06 1978-09-06 High voltage power source device for electrophotographic copier Pending JPS5536856A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11014478A JPS5536856A (en) 1978-09-06 1978-09-06 High voltage power source device for electrophotographic copier

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11014478A JPS5536856A (en) 1978-09-06 1978-09-06 High voltage power source device for electrophotographic copier

Publications (1)

Publication Number Publication Date
JPS5536856A true JPS5536856A (en) 1980-03-14

Family

ID=14528146

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11014478A Pending JPS5536856A (en) 1978-09-06 1978-09-06 High voltage power source device for electrophotographic copier

Country Status (1)

Country Link
JP (1) JPS5536856A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5766445A (en) * 1980-10-11 1982-04-22 Ricoh Co Ltd Controlling method for extent of charging of electrophotographic copying machine
JPS58152267A (en) * 1982-03-04 1983-09-09 Murata Mfg Co Ltd Electrophotographic copying device
JPS60242479A (en) * 1984-05-16 1985-12-02 Fuji Electric Co Ltd Method for stabilizing electrification of electrophotographic sensitive body
JPS6141947U (en) * 1984-08-23 1986-03-18 川崎重工業株式会社 Camchen tension guide mounting structure

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS49106336A (en) * 1973-01-18 1974-10-08
JPS5393029A (en) * 1977-01-27 1978-08-15 Ricoh Co Ltd Copying process control method of electrophotographic copying machine

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS49106336A (en) * 1973-01-18 1974-10-08
JPS5393029A (en) * 1977-01-27 1978-08-15 Ricoh Co Ltd Copying process control method of electrophotographic copying machine

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5766445A (en) * 1980-10-11 1982-04-22 Ricoh Co Ltd Controlling method for extent of charging of electrophotographic copying machine
JPS58152267A (en) * 1982-03-04 1983-09-09 Murata Mfg Co Ltd Electrophotographic copying device
JPS60242479A (en) * 1984-05-16 1985-12-02 Fuji Electric Co Ltd Method for stabilizing electrification of electrophotographic sensitive body
JPS6141947U (en) * 1984-08-23 1986-03-18 川崎重工業株式会社 Camchen tension guide mounting structure
JPS6240198Y2 (en) * 1984-08-23 1987-10-14

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