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JPS57118257A - Image formation apparatus - Google Patents

Image formation apparatus

Info

Publication number
JPS57118257A
JPS57118257A JP56003255A JP325581A JPS57118257A JP S57118257 A JPS57118257 A JP S57118257A JP 56003255 A JP56003255 A JP 56003255A JP 325581 A JP325581 A JP 325581A JP S57118257 A JPS57118257 A JP S57118257A
Authority
JP
Japan
Prior art keywords
image quality
microcomputer
microcomputers
control
controlling
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
JP56003255A
Other languages
Japanese (ja)
Other versions
JPH0213789B2 (en
Inventor
Koki Kuroda
Koji Suzuki
Joji Nagahira
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 JP56003255A priority Critical patent/JPS57118257A/en
Priority to US06/338,045 priority patent/US4511240A/en
Publication of JPS57118257A publication Critical patent/JPS57118257A/en
Priority to US06/921,103 priority patent/US4755850A/en
Publication of JPH0213789B2 publication Critical patent/JPH0213789B2/ja
Granted 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
    • 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
    • G03G15/06—Apparatus for electrographic processes using a charge pattern for developing
    • G03G15/065—Arrangements for controlling the potential of the developing electrode

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Exposure Or Original Feeding In Electrophotography (AREA)
  • Variable Magnification In Projection-Type Copying Machines (AREA)
  • Control Or Security For Electrophotography (AREA)

Abstract

PURPOSE:To change over image quality control conditions in accordance with magnifications different from 1 or equal to 1, by using 2 microcomputers for sequential control and image quality control. CONSTITUTION:A microcomputer 15' for controlling sequential copying operations instructs only switching of an exposure lamp, developing bias application, or the like. When an image quality-controlling microcomputer 15 receives said switching instruction from the microcomputer 15', values for forming the optimum image quality are obtained by calculation based on a potential value on the surface of a photosensitive drum detected with an electrometer in order to control exposure lamp voltage and developing bias value. Conventional microcomputers having only limited input and output ports have not been able to operate so far as image quality control in the case of changing magnification, but use of the 2 microcomputers permits image quality controlling conditions to be changed with the microcomputer 15 in accordance with magnification information received from the microcomputer 15'.
JP56003255A 1981-01-13 1981-01-14 Image formation apparatus Granted JPS57118257A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
JP56003255A JPS57118257A (en) 1981-01-14 1981-01-14 Image formation apparatus
US06/338,045 US4511240A (en) 1981-01-13 1982-01-08 Electrostatic recording apparatus
US06/921,103 US4755850A (en) 1981-01-13 1986-10-21 Electrostatic recording apparatus including a controlled developer device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56003255A JPS57118257A (en) 1981-01-14 1981-01-14 Image formation apparatus

Publications (2)

Publication Number Publication Date
JPS57118257A true JPS57118257A (en) 1982-07-23
JPH0213789B2 JPH0213789B2 (en) 1990-04-05

Family

ID=11552351

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56003255A Granted JPS57118257A (en) 1981-01-13 1981-01-14 Image formation apparatus

Country Status (1)

Country Link
JP (1) JPS57118257A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59136728A (en) * 1983-01-26 1984-08-06 Canon Inc Image forming device
JPS59159153A (en) * 1983-02-28 1984-09-08 Canon Inc Reproducing and outputting device of image
JPS6227766A (en) * 1985-07-29 1987-02-05 Fuji Xerox Co Ltd Method for adjusting image quality of copying machine
JP2009008906A (en) * 2007-06-28 2009-01-15 Ricoh Co Ltd Image forming device

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59136728A (en) * 1983-01-26 1984-08-06 Canon Inc Image forming device
JPH0541993B2 (en) * 1983-01-26 1993-06-25 Canon Kk
JPS59159153A (en) * 1983-02-28 1984-09-08 Canon Inc Reproducing and outputting device of image
JPS6227766A (en) * 1985-07-29 1987-02-05 Fuji Xerox Co Ltd Method for adjusting image quality of copying machine
JP2009008906A (en) * 2007-06-28 2009-01-15 Ricoh Co Ltd Image forming device

Also Published As

Publication number Publication date
JPH0213789B2 (en) 1990-04-05

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