DE3340529C2 - - Google Patents

Info

Publication number
DE3340529C2
DE3340529C2 DE3340529A DE3340529A DE3340529C2 DE 3340529 C2 DE3340529 C2 DE 3340529C2 DE 3340529 A DE3340529 A DE 3340529A DE 3340529 A DE3340529 A DE 3340529A DE 3340529 C2 DE3340529 C2 DE 3340529C2
Authority
DE
Germany
Prior art keywords
toner
reference pattern
copy
photoconductive element
fatigue
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.)
Expired
Application number
DE3340529A
Other languages
German (de)
English (en)
Other versions
DE3340529A1 (de
Inventor
Chikara Tokio/Tokyo Jp Imai
Yasushi Yamato Kanagawa Jp Koichi
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
Publication of DE3340529A1 publication Critical patent/DE3340529A1/de
Application granted granted Critical
Publication of DE3340529C2 publication Critical patent/DE3340529C2/de
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
    • G03G15/06—Apparatus for electrographic processes using a charge pattern for developing
    • G03G15/08—Apparatus for electrographic processes using a charge pattern for developing using a solid developer, e.g. powder developer
    • 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
    • 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
    • G03G15/08—Apparatus for electrographic processes using a charge pattern for developing using a solid developer, e.g. powder developer
    • G03G15/0822—Arrangements for preparing, mixing, supplying or dispensing developer
    • G03G15/0848—Arrangements for testing or measuring developer properties or quality, e.g. charge, size, flowability
    • G03G15/0849—Detection or control means for the developer concentration
    • 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
    • G03G15/5041—Detecting a toner image, e.g. density, toner coverage, using a test patch

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Dry Development In Electrophotography (AREA)
  • Developing For Electrophotography (AREA)
  • Control Or Security For Electrophotography (AREA)
DE19833340529 1982-11-09 1983-11-09 Verfahren zum steuern der zufuhr von toner Granted DE3340529A1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP57196601A JPS5986074A (ja) 1982-11-09 1982-11-09 電子写真複写機におけるトナ−補給量の制御方法

Publications (2)

Publication Number Publication Date
DE3340529A1 DE3340529A1 (de) 1984-05-10
DE3340529C2 true DE3340529C2 (en, 2012) 1988-03-24

Family

ID=16360454

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19833340529 Granted DE3340529A1 (de) 1982-11-09 1983-11-09 Verfahren zum steuern der zufuhr von toner

Country Status (3)

Country Link
US (1) US4522481A (en, 2012)
JP (1) JPS5986074A (en, 2012)
DE (1) DE3340529A1 (en, 2012)

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0640233B2 (ja) * 1984-04-13 1994-05-25 株式会社リコー 電子写真装置
US4742372A (en) * 1985-08-09 1988-05-03 Mita Industrial Co., Ltd. Toner detection method and device for copying machines
US4684243A (en) * 1986-05-15 1987-08-04 Eastman Kodak Company Optional output for test patches
US4785331A (en) * 1986-11-13 1988-11-15 Minolta Camera Kabushiki Kaisha Electrophotographic copying method and apparatus
GB2203358A (en) * 1987-01-12 1988-10-19 Ricoh Kk A toner density control device
JPS63228180A (ja) * 1987-03-17 1988-09-22 Minolta Camera Co Ltd トナ−補給装置
US4829336A (en) * 1988-04-18 1989-05-09 International Business Machines Corporation Toner concentration control method and apparatus
JP2765582B2 (ja) * 1988-10-05 1998-06-18 株式会社リコー 画像形成装置
US4974024A (en) * 1989-07-03 1990-11-27 Xerox Corporation Predictive toner dispenser controller
US5124750A (en) * 1989-09-05 1992-06-23 Minolta Camera Kabushiki Kaisha Toner density detecting method, and image forming method and apparatus employing the toner density detecting method
JP2810813B2 (ja) * 1991-10-03 1998-10-15 富士通株式会社 印刷制御装置
US6081677A (en) * 1996-08-02 2000-06-27 Oce Printing Systems Gmbh Process for optimizing a half-tone reproduction on a photoconductor of electrophotographic printers and copiers
KR100238688B1 (ko) * 1997-04-07 2000-01-15 윤종용 전자사진형성장치의 현상제 회수/공급장치
US7162187B2 (en) * 2003-06-30 2007-01-09 Ricoh Company, Ltd. Image forming apparatus and image forming method
JP2006106307A (ja) * 2004-10-05 2006-04-20 Ricoh Co Ltd 画像形成装置

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2915052A1 (de) * 1978-04-14 1979-10-25 Konishiroku Photo Ind Verfahren und vorrichtung zur steuerung der bilddichte in einem elektrophotographischen kopiergeraet
GB1573127A (en) * 1976-03-12 1980-08-13 Ricoh Kk Static copying machines
EP0037731A2 (en) * 1980-04-07 1981-10-14 Xerox Corporation Development control of an electrostatographic machine

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56102874A (en) * 1980-01-19 1981-08-17 Canon Inc Developer replenishing device
JPS56146155A (en) * 1980-04-15 1981-11-13 Mita Ind Co Ltd Electrostatic copying machine
US4343548A (en) * 1980-05-19 1982-08-10 Xerox Corporation Control system for regulating the concentration of toner particles within a developer mixture
JPS5754962A (en) * 1980-09-19 1982-04-01 Mita Ind Co Ltd Development device
US4462680A (en) * 1981-05-20 1984-07-31 Canon Kabushiki Kaisha Apparatus for controlling toner density

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1573127A (en) * 1976-03-12 1980-08-13 Ricoh Kk Static copying machines
DE2915052A1 (de) * 1978-04-14 1979-10-25 Konishiroku Photo Ind Verfahren und vorrichtung zur steuerung der bilddichte in einem elektrophotographischen kopiergeraet
EP0037731A2 (en) * 1980-04-07 1981-10-14 Xerox Corporation Development control of an electrostatographic machine

Also Published As

Publication number Publication date
US4522481A (en) 1985-06-11
JPS5986074A (ja) 1984-05-18
DE3340529A1 (de) 1984-05-10

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Legal Events

Date Code Title Description
OP8 Request for examination as to paragraph 44 patent law
8128 New person/name/address of the agent

Representative=s name: SCHWABE, H., DIPL.-ING. SANDMAIR, K., DIPL.-CHEM.

D2 Grant after examination
8364 No opposition during term of opposition
8339 Ceased/non-payment of the annual fee