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JPS5785070A - Control device for copying density of electrophotographic copier - Google Patents

Control device for copying density of electrophotographic copier

Info

Publication number
JPS5785070A
JPS5785070A JP55160854A JP16085480A JPS5785070A JP S5785070 A JPS5785070 A JP S5785070A JP 55160854 A JP55160854 A JP 55160854A JP 16085480 A JP16085480 A JP 16085480A JP S5785070 A JPS5785070 A JP S5785070A
Authority
JP
Japan
Prior art keywords
fixing
density
paper
image density
copying machine
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
JP55160854A
Other languages
Japanese (ja)
Other versions
JPH0310945B2 (en
Inventor
Fumio Nakaya
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.)
Fujifilm Business Innovation Corp
Original Assignee
Fuji Xerox 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 Fuji Xerox Co Ltd filed Critical Fuji Xerox Co Ltd
Priority to JP55160854A priority Critical patent/JPS5785070A/en
Publication of JPS5785070A publication Critical patent/JPS5785070A/en
Publication of JPH0310945B2 publication Critical patent/JPH0310945B2/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
    • G03G15/20—Apparatus for electrographic processes using a charge pattern for fixing, e.g. by using heat
    • G03G15/2003—Apparatus for electrographic processes using a charge pattern for fixing, e.g. by using heat using heat
    • G03G15/2014—Apparatus for electrographic processes using a charge pattern for fixing, e.g. by using heat using heat using contact heat
    • G03G15/2039—Apparatus for electrographic processes using a charge pattern for fixing, e.g. by using heat using heat using contact heat with means for controlling the fixing temperature

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Fixing For Electrophotography (AREA)
  • Combination Of More Than One Step In Electrophotography (AREA)
  • Control Or Security For Electrophotography (AREA)

Abstract

PURPOSE:To obtain always constant density of a copying machine by detecting image density from a member to be detected after fixing and controlling the respective parts of the copying machine by the signal obtained by this in such a way that the correct image density is obtained. CONSTITUTION:A member 10 to be detected traveling in parallel to paper 9 is provided between a transfer process and a fixing process, and this member 10 is designed to have roughly the same performance as that of the paper 9. The toner image formed on the non-image part of a photoreceptor 6 is transferred on the member 10, and this is fixed together with the paper 9 on the member 10. The image density after fixing is detected as an electric signal from the member 10 by an image density detector 13. The signal obtained by this is inputted to a control circuit of a copying machine body 1, by which the respective parts of the body 1, for example, exposure, the bias potential of a developing device 8, the electrostatic charge quantity of a transfer device 14, and the fixing temp. of a fixing device 12 are so controlled that the correct density is obtained.
JP55160854A 1980-11-17 1980-11-17 Control device for copying density of electrophotographic copier Granted JPS5785070A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP55160854A JPS5785070A (en) 1980-11-17 1980-11-17 Control device for copying density of electrophotographic copier

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP55160854A JPS5785070A (en) 1980-11-17 1980-11-17 Control device for copying density of electrophotographic copier

Publications (2)

Publication Number Publication Date
JPS5785070A true JPS5785070A (en) 1982-05-27
JPH0310945B2 JPH0310945B2 (en) 1991-02-14

Family

ID=15723819

Family Applications (1)

Application Number Title Priority Date Filing Date
JP55160854A Granted JPS5785070A (en) 1980-11-17 1980-11-17 Control device for copying density of electrophotographic copier

Country Status (1)

Country Link
JP (1) JPS5785070A (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6049351A (en) * 1983-08-27 1985-03-18 Mita Ind Co Ltd Image output device
JPS6057868A (en) * 1983-09-09 1985-04-03 Canon Inc Image density controlling method
JPS6126071A (en) * 1984-07-17 1986-02-05 Canon Inc Image formation controller
JPS6223075A (en) * 1985-07-24 1987-01-31 Hitachi Ltd Recorder
US4780742A (en) * 1984-07-30 1988-10-25 Canon Kabushiki Kaisha Image quality improving process and apparatus and sheet usable therewith
US6151460A (en) * 1998-05-21 2000-11-21 Brother Kogyo Kabushiki Kaisha Image recording device having a developing bias voltage output circuit

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5298534A (en) * 1976-02-13 1977-08-18 Ricoh Co Ltd Copying machine
JPS5512916A (en) * 1978-07-13 1980-01-29 Ricoh Co Ltd Controlling pircture density
JPS5515185A (en) * 1978-07-19 1980-02-02 Ricoh Co Ltd Image density control method

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5298534A (en) * 1976-02-13 1977-08-18 Ricoh Co Ltd Copying machine
JPS5512916A (en) * 1978-07-13 1980-01-29 Ricoh Co Ltd Controlling pircture density
JPS5515185A (en) * 1978-07-19 1980-02-02 Ricoh Co Ltd Image density control method

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6049351A (en) * 1983-08-27 1985-03-18 Mita Ind Co Ltd Image output device
JPS6057868A (en) * 1983-09-09 1985-04-03 Canon Inc Image density controlling method
JPS6126071A (en) * 1984-07-17 1986-02-05 Canon Inc Image formation controller
US4780742A (en) * 1984-07-30 1988-10-25 Canon Kabushiki Kaisha Image quality improving process and apparatus and sheet usable therewith
JPS6223075A (en) * 1985-07-24 1987-01-31 Hitachi Ltd Recorder
US6151460A (en) * 1998-05-21 2000-11-21 Brother Kogyo Kabushiki Kaisha Image recording device having a developing bias voltage output circuit

Also Published As

Publication number Publication date
JPH0310945B2 (en) 1991-02-14

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