JPS5770551A - Copy image adjustment method - Google Patents

Copy image adjustment method

Info

Publication number
JPS5770551A
JPS5770551A JP55145736A JP14573680A JPS5770551A JP S5770551 A JPS5770551 A JP S5770551A JP 55145736 A JP55145736 A JP 55145736A JP 14573680 A JP14573680 A JP 14573680A JP S5770551 A JPS5770551 A JP S5770551A
Authority
JP
Japan
Prior art keywords
potential
exposure
power source
photoreceptor
scanner
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
JP55145736A
Other languages
Japanese (ja)
Inventor
Hiroaki Ueno
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 JP55145736A priority Critical patent/JPS5770551A/en
Publication of JPS5770551A publication Critical patent/JPS5770551A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G15/00—Apparatus for electrographic processes using a charge pattern
    • G03G15/50—Machine control of apparatus for electrographic processes using a charge pattern, e.g. regulating differents parts of the machine, multimode copiers, microprocessor control
    • G03G15/5033—Machine control of apparatus for electrographic processes using a charge pattern, e.g. regulating differents parts of the machine, multimode copiers, microprocessor control by measuring the photoconductor characteristics, e.g. temperature, or the characteristics of an image on the photoconductor
    • G03G15/5037—Machine control of apparatus for electrographic processes using a charge pattern, e.g. regulating differents parts of the machine, multimode copiers, microprocessor control by measuring the photoconductor characteristics, e.g. temperature, or the characteristics of an image on the photoconductor the characteristics being an electrical parameter, e.g. voltage

Landscapes

  • Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Control Or Security For Electrophotography (AREA)
  • Exposure Or Original Feeding In Electrophotography (AREA)

Abstract

PURPOSE:To always obtain a high quality image, by charging and exposing a photoreceptor in returning a scanner, and controlling quality of charging and exposure in order to adjust potential of the electrostatic latent image formed to a standard value. CONSTITUTION:When power is supplied to a copying machine, a control circuit 21 applies input control signals to a corona charger power source 22 and an exposure lamp power source 23 to execute initial setting. Both the power sources are turned on, and a scanner having an exposure lamp 5, and mirrors 6, 7 reaches a returning position R from a copying state. At that time, exposure is stopped, and the corona charger power source 22 is kept on. The charged potential on a photoreceptor 11 is detected with a surface electrometer 18, and compared with the set potential of a circuit 20 for setting a reference latent image potential in a comparator 19 to control the source 22. When the scanner reaches the point G, exposure is started, the latent image potential on the photoreceptor 11 corresponding to the background standard density pattern 3 is likewise compared with the reference background set potential, and both are equalized by controlling the lamp power source 23, thus permitting a high quality copy to be always obtained.
JP55145736A 1980-10-20 1980-10-20 Copy image adjustment method Pending JPS5770551A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP55145736A JPS5770551A (en) 1980-10-20 1980-10-20 Copy image adjustment method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP55145736A JPS5770551A (en) 1980-10-20 1980-10-20 Copy image adjustment method

Publications (1)

Publication Number Publication Date
JPS5770551A true JPS5770551A (en) 1982-05-01

Family

ID=15391946

Family Applications (1)

Application Number Title Priority Date Filing Date
JP55145736A Pending JPS5770551A (en) 1980-10-20 1980-10-20 Copy image adjustment method

Country Status (1)

Country Link
JP (1) JPS5770551A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58224355A (en) * 1982-06-24 1983-12-26 Ricoh Co Ltd Method for correcting surface potential of photoreceptor of electrophotographic copying machine
EP0660196A2 (en) * 1993-12-20 1995-06-28 Xerox Corporation Method and apparatus for background control in an electrostatographic printing machine

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58224355A (en) * 1982-06-24 1983-12-26 Ricoh Co Ltd Method for correcting surface potential of photoreceptor of electrophotographic copying machine
EP0660196A2 (en) * 1993-12-20 1995-06-28 Xerox Corporation Method and apparatus for background control in an electrostatographic printing machine
EP0660196A3 (en) * 1993-12-20 1996-10-16 Xerox Corp Method and apparatus for background control in an electrostatographic printing machine.

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