JPS5691251A - Method of charging photoreceptor in color electrophotography system - Google Patents

Method of charging photoreceptor in color electrophotography system

Info

Publication number
JPS5691251A
JPS5691251A JP16874779A JP16874779A JPS5691251A JP S5691251 A JPS5691251 A JP S5691251A JP 16874779 A JP16874779 A JP 16874779A JP 16874779 A JP16874779 A JP 16874779A JP S5691251 A JPS5691251 A JP S5691251A
Authority
JP
Japan
Prior art keywords
grid
color
voltage
photoreceptor
charger
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.)
Granted
Application number
JP16874779A
Other languages
Japanese (ja)
Other versions
JPS6256502B2 (en
Inventor
Kan Shiga
Masayoshi Watanuki
Hidetoshi Yano
Nobuo Kasahara
Toshio Nakahara
Yoshihiro Sakai
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.)
Ricoh Co Ltd
Original Assignee
Ricoh 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 Ricoh Co Ltd filed Critical Ricoh Co Ltd
Priority to JP16874779A priority Critical patent/JPS5691251A/en
Publication of JPS5691251A publication Critical patent/JPS5691251A/en
Publication of JPS6256502B2 publication Critical patent/JPS6256502B2/ja
Granted legal-status Critical Current

Links

Abstract

PURPOSE: To uniformalize the photoreceptor surface potential before exposure of every color separation by forming the charger which charges the photoreceptor into a scorotron type and differing the voltage to be applied to the grid thereof at the first color separating and at the other color separating.
CONSTITUTION: A charger 12 is of a scorotron type, has a grid 123, and the discharge voltage of positive polarity is applied from a DC power source 124 to its discharge section 121 at the timing matched to the sequence of the apparatus. Three kinds of Zenor diode arrays SZ1, SZ2, SZ3 are connected to the grid 123 according to the number 3 of color separation, and are so arranged that the voltage to be applied upon the grid changes when the Zenor diode arrays are changed over selectively and exclusively by switches SW1, SW2, SW3. The changing-over of the switch SW1 etc. is accomplished in correspondence to the sequence of the color process.
COPYRIGHT: (C)1981,JPO&Japio
JP16874779A 1979-12-25 1979-12-25 Method of charging photoreceptor in color electrophotography system Granted JPS5691251A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP16874779A JPS5691251A (en) 1979-12-25 1979-12-25 Method of charging photoreceptor in color electrophotography system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP16874779A JPS5691251A (en) 1979-12-25 1979-12-25 Method of charging photoreceptor in color electrophotography system

Publications (2)

Publication Number Publication Date
JPS5691251A true JPS5691251A (en) 1981-07-24
JPS6256502B2 JPS6256502B2 (en) 1987-11-26

Family

ID=15873662

Family Applications (1)

Application Number Title Priority Date Filing Date
JP16874779A Granted JPS5691251A (en) 1979-12-25 1979-12-25 Method of charging photoreceptor in color electrophotography system

Country Status (1)

Country Link
JP (1) JPS5691251A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4603964A (en) * 1984-10-22 1986-08-05 Xerox Corporation Photoreceptor charging scorotron
JPS63118763A (en) * 1986-11-07 1988-05-23 Konica Corp Image forming method and its device
US5438401A (en) * 1991-12-09 1995-08-01 Ricoh Company, Ltd. Multicolor image forming method and apparatus therefor
JP2007230646A (en) * 2006-03-02 2007-09-13 Azuma Iwasaki Tube content squeezing tool

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS48102629A (en) * 1972-04-12 1973-12-24
JPS51123160A (en) * 1975-04-21 1976-10-27 Hitachi Ltd Electronic photograph device
JPS5285827A (en) * 1976-01-12 1977-07-16 Ono Gijiyutsu Kenkiyuushiyo Yu Electrophotographic color printer

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS48102629A (en) * 1972-04-12 1973-12-24
JPS51123160A (en) * 1975-04-21 1976-10-27 Hitachi Ltd Electronic photograph device
JPS5285827A (en) * 1976-01-12 1977-07-16 Ono Gijiyutsu Kenkiyuushiyo Yu Electrophotographic color printer

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4603964A (en) * 1984-10-22 1986-08-05 Xerox Corporation Photoreceptor charging scorotron
JPS63118763A (en) * 1986-11-07 1988-05-23 Konica Corp Image forming method and its device
US5438401A (en) * 1991-12-09 1995-08-01 Ricoh Company, Ltd. Multicolor image forming method and apparatus therefor
JP2007230646A (en) * 2006-03-02 2007-09-13 Azuma Iwasaki Tube content squeezing tool

Also Published As

Publication number Publication date
JPS6256502B2 (en) 1987-11-26

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