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JPS5685761A - Liquid developing device of electrophotographic copying machine - Google Patents

Liquid developing device of electrophotographic copying machine

Info

Publication number
JPS5685761A
JPS5685761A JP16272079A JP16272079A JPS5685761A JP S5685761 A JPS5685761 A JP S5685761A JP 16272079 A JP16272079 A JP 16272079A JP 16272079 A JP16272079 A JP 16272079A JP S5685761 A JPS5685761 A JP S5685761A
Authority
JP
Japan
Prior art keywords
density
temperature
developing
bias voltage
developing device
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
JP16272079A
Other languages
Japanese (ja)
Inventor
Hiromi Izumi
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 JP16272079A priority Critical patent/JPS5685761A/en
Publication of JPS5685761A publication Critical patent/JPS5685761A/en
Pending legal-status Critical Current

Links

Landscapes

  • Wet Developing In Electrophotography (AREA)
  • Control Or Security For Electrophotography (AREA)

Abstract

PURPOSE: To render density of a copied image constant, by detecting the temperature of a developing fluid, and selectively controlling various conditions affecting image density of copying paper.
CONSTITUTION: When the developing temperature drops in making a large number of copies in succession, temperature detector 10 detects its temperature and controls controlling device 11. Its control signals change charge quantity of main charging charger 2, bias voltage of developing bias voltage source 12, light quantity of light source 9, and further, charge quantity of transfer charger 5, thus permitting density of an image developed on photosensitive drum 1, that is, copied image density to be made constant.
COPYRIGHT: (C)1981,JPO&Japio
JP16272079A 1979-12-17 1979-12-17 Liquid developing device of electrophotographic copying machine Pending JPS5685761A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP16272079A JPS5685761A (en) 1979-12-17 1979-12-17 Liquid developing device of electrophotographic copying machine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP16272079A JPS5685761A (en) 1979-12-17 1979-12-17 Liquid developing device of electrophotographic copying machine

Publications (1)

Publication Number Publication Date
JPS5685761A true JPS5685761A (en) 1981-07-13

Family

ID=15759992

Family Applications (1)

Application Number Title Priority Date Filing Date
JP16272079A Pending JPS5685761A (en) 1979-12-17 1979-12-17 Liquid developing device of electrophotographic copying machine

Country Status (1)

Country Link
JP (1) JPS5685761A (en)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS52138133A (en) * 1976-05-14 1977-11-18 Canon Inc Electrophotography
JPS5343029A (en) * 1976-09-30 1978-04-18 Yamatake Honeywell Co Ltd Thermocouples for detecting flame
JPS53115233A (en) * 1977-03-18 1978-10-07 Ricoh Co Ltd Control for electrophotogtaphic copier

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS52138133A (en) * 1976-05-14 1977-11-18 Canon Inc Electrophotography
JPS5343029A (en) * 1976-09-30 1978-04-18 Yamatake Honeywell Co Ltd Thermocouples for detecting flame
JPS53115233A (en) * 1977-03-18 1978-10-07 Ricoh Co Ltd Control for electrophotogtaphic copier

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