JPS5553345A - Electrostatic recording device - Google Patents

Electrostatic recording device

Info

Publication number
JPS5553345A
JPS5553345A JP12673678A JP12673678A JPS5553345A JP S5553345 A JPS5553345 A JP S5553345A JP 12673678 A JP12673678 A JP 12673678A JP 12673678 A JP12673678 A JP 12673678A JP S5553345 A JPS5553345 A JP S5553345A
Authority
JP
Japan
Prior art keywords
surface potential
circuit
recording body
drum
detect
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
JP12673678A
Other languages
Japanese (ja)
Inventor
Yoshitaka Kawamo
Koji Suzuki
Yoshikazu Yokomizo
Kimio Nakahata
Hatsuo Tajima
Naoki Iwami
Shunichi Masuda
Katsuichi Shimizu
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 JP12673678A priority Critical patent/JPS5553345A/en
Publication of JPS5553345A publication Critical patent/JPS5553345A/en
Pending legal-status Critical Current

Links

Landscapes

  • Control Or Security For Electrophotography (AREA)

Abstract

PURPOSE: To increase the stability of control, by using a linear detector circuit as rectifier circuit, and controlling the processing means of image forming with the output thereof to make linear the relation between the surface potential of recording body and DC reproduction voltage.
CONSTITUTION: In an electrostatic recording device having a detecting means to detect the surface potential on the recording body as AC output and plural processing means to apply various processings to the recording body and form image on the recording body, a surface electrometer 50 to detect the surface potential of a drum 11 is provided in a developing device 25, and the detected AC signal is amplified and reproduced in DC in a rectifying-smoothing circuit 205 to be led into a sample hold circuit 206, so that a development bias control circuit 207 may be controlled. Thus, since a linear detector circuit is used, the linearity of DC reproduction voltage characteristic with respect to the surface potential of the drum 11 may be improved, and the compensation for temperature may be also sufficient.
COPYRIGHT: (C)1980,JPO&Japio
JP12673678A 1978-10-14 1978-10-14 Electrostatic recording device Pending JPS5553345A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP12673678A JPS5553345A (en) 1978-10-14 1978-10-14 Electrostatic recording device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12673678A JPS5553345A (en) 1978-10-14 1978-10-14 Electrostatic recording device

Publications (1)

Publication Number Publication Date
JPS5553345A true JPS5553345A (en) 1980-04-18

Family

ID=14942614

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12673678A Pending JPS5553345A (en) 1978-10-14 1978-10-14 Electrostatic recording device

Country Status (1)

Country Link
JP (1) JPS5553345A (en)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5077046A (en) * 1974-08-02 1975-06-24
JPS5225226B2 (en) * 1972-06-14 1977-07-06

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5225226B2 (en) * 1972-06-14 1977-07-06
JPS5077046A (en) * 1974-08-02 1975-06-24

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