DE69414426T2 - Prozesssteuervorrichtung eines elektrophotographischen Gerätes - Google Patents

Prozesssteuervorrichtung eines elektrophotographischen Gerätes

Info

Publication number
DE69414426T2
DE69414426T2 DE69414426T DE69414426T DE69414426T2 DE 69414426 T2 DE69414426 T2 DE 69414426T2 DE 69414426 T DE69414426 T DE 69414426T DE 69414426 T DE69414426 T DE 69414426T DE 69414426 T2 DE69414426 T2 DE 69414426T2
Authority
DE
Germany
Prior art keywords
process control
electrophotographic
control device
electrophotographic device
control
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 - Fee Related
Application number
DE69414426T
Other languages
English (en)
Other versions
DE69414426D1 (de
Inventor
Mitsuru Tokuyama
Toshiaki Ino
Motoyuki Itoyama
Kunio Ohashi
Haruo Nishiyama
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.)
Sharp Corp
Original Assignee
Sharp Corp
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
Priority claimed from JP00138493A external-priority patent/JP3219882B2/ja
Application filed by Sharp Corp filed Critical Sharp Corp
Publication of DE69414426D1 publication Critical patent/DE69414426D1/de
Application granted granted Critical
Publication of DE69414426T2 publication Critical patent/DE69414426T2/de
Anticipated expiration legal-status Critical
Expired - Fee Related 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
    • G03G15/5041—Detecting a toner image, e.g. density, toner coverage, using a test patch
    • 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
    • G03G15/04—Apparatus for electrographic processes using a charge pattern for exposing, i.e. imagewise exposure by optically projecting the original image on a photoconductive recording material
    • G03G15/045—Apparatus for electrographic processes using a charge pattern for exposing, i.e. imagewise exposure by optically projecting the original image on a photoconductive recording material with means for charging or discharging distinct portions of the charge pattern on the recording material, e.g. for contrast enhancement or discharging non-image areas
    • G03G15/047—Apparatus for electrographic processes using a charge pattern for exposing, i.e. imagewise exposure by optically projecting the original image on a photoconductive recording material with means for charging or discharging distinct portions of the charge pattern on the recording material, e.g. for contrast enhancement or discharging non-image areas for discharging non-image areas
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G2215/00—Apparatus for electrophotographic processes
    • G03G2215/00025—Machine control, e.g. regulating different parts of the machine
    • G03G2215/00029—Image density detection
    • G03G2215/00033—Image density detection on recording member
    • G03G2215/00037—Toner image detection
    • G03G2215/00042—Optical detection
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G2215/00—Apparatus for electrophotographic processes
    • G03G2215/00025—Machine control, e.g. regulating different parts of the machine
    • G03G2215/00071—Machine control, e.g. regulating different parts of the machine by measuring the photoconductor or its environmental characteristics
    • G03G2215/00084—Machine control, e.g. regulating different parts of the machine by measuring the photoconductor or its environmental characteristics the characteristic being the temperature
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G2215/00—Apparatus for electrophotographic processes
    • G03G2215/04—Arrangements for exposing and producing an image
    • G03G2215/0429—Changing or enhancing the image
    • G03G2215/0431—Producing a clean non-image area, i.e. avoiding show-around effects
    • G03G2215/0448—Charge-erasing means for the non-image area

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Control Or Security For Electrophotography (AREA)
DE69414426T 1993-01-07 1994-01-04 Prozesssteuervorrichtung eines elektrophotographischen Gerätes Expired - Fee Related DE69414426T2 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP00138493A JP3219882B2 (ja) 1992-03-11 1993-01-07 電子写真装置のプロセス制御装置

Publications (2)

Publication Number Publication Date
DE69414426D1 DE69414426D1 (de) 1998-12-17
DE69414426T2 true DE69414426T2 (de) 1999-06-10

Family

ID=11499995

Family Applications (2)

Application Number Title Priority Date Filing Date
DE69432936T Expired - Fee Related DE69432936T2 (de) 1993-01-07 1994-01-04 Betriebsüberwachungseinrichtung eines elektrophotographischen Gerätes
DE69414426T Expired - Fee Related DE69414426T2 (de) 1993-01-07 1994-01-04 Prozesssteuervorrichtung eines elektrophotographischen Gerätes

Family Applications Before (1)

Application Number Title Priority Date Filing Date
DE69432936T Expired - Fee Related DE69432936T2 (de) 1993-01-07 1994-01-04 Betriebsüberwachungseinrichtung eines elektrophotographischen Gerätes

Country Status (3)

Country Link
US (1) US5532794A (de)
EP (2) EP0858008B1 (de)
DE (2) DE69432936T2 (de)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5678131A (en) * 1995-08-22 1997-10-14 Eastman Kodak Company Apparatus and method for regulating toning contrast and extending developer life by long-term adjustment of toner concentration
JP3282964B2 (ja) * 1996-03-21 2002-05-20 シャープ株式会社 画像形成装置の画像安定化方法
JPH1048939A (ja) * 1996-08-07 1998-02-20 Minolta Co Ltd 画像形成装置
JPH1063048A (ja) * 1996-08-13 1998-03-06 Fuji Xerox Co Ltd 画像形成装置
JPH10232521A (ja) * 1997-02-19 1998-09-02 Canon Inc 画像形成装置
US5815768A (en) * 1997-02-28 1998-09-29 Hewlett-Packard Company Detection of toner depletion in an electrophotographic printing system
JP5301576B2 (ja) 2011-02-03 2013-09-25 シャープ株式会社 画像形成装置および画像形成方法
JP5958184B2 (ja) * 2012-08-27 2016-07-27 ブラザー工業株式会社 画像形成装置
US20140178084A1 (en) * 2012-12-21 2014-06-26 Hewlett-Packard Development Company, L.P. Machine learning based tone consistency calibration decisions
JP6214275B2 (ja) 2013-08-08 2017-10-18 キヤノン株式会社 画像形成装置

Family Cites Families (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5555349A (en) * 1978-10-20 1980-04-23 Fuji Xerox Co Ltd Control unit of electrophotographic copier
JPS55127572A (en) * 1979-03-26 1980-10-02 Fuji Xerox Co Ltd Control unit of electrophotographic copier
JPS58152273A (ja) * 1982-03-04 1983-09-09 Minolta Camera Co Ltd 転写型電子写真複写機
JPS58122571A (ja) * 1982-01-14 1983-07-21 Konishiroku Photo Ind Co Ltd 静電記録装置
JPS58123567A (ja) * 1982-01-19 1983-07-22 Konishiroku Photo Ind Co Ltd 静電記録装置
JPS58136061A (ja) * 1982-02-09 1983-08-12 Ricoh Co Ltd 複写プロセス制御方法
EP0384493A3 (de) * 1985-10-25 1990-11-07 Colorocs Corporation Druckgerät für Farbelektrophotographie
US4684243A (en) * 1986-05-15 1987-08-04 Eastman Kodak Company Optional output for test patches
US4870460A (en) * 1986-12-05 1989-09-26 Ricoh Company, Ltd. Method of controlling surface potential of photoconductive element
US5276483A (en) * 1988-11-08 1994-01-04 Canon Kabushiki Kaisha Image forming apparatus provided with an attraction charger controlled by one or more ambient conditions
JP2738749B2 (ja) * 1989-08-07 1998-04-08 株式会社リコー 画像形成装置
JPH03215051A (ja) * 1990-01-19 1991-09-20 Hitachi Koki Co Ltd Ｌｅｄプリンタ
US5191362A (en) * 1990-02-21 1993-03-02 Tokyo Electric Co., Ltd. Electrophotographic printing apparatus with a control system responsive to temperature changes
JPH0434563A (ja) * 1990-05-31 1992-02-05 Toshiba Corp 画像形成装置
JPH04165371A (ja) * 1990-10-30 1992-06-11 Canon Inc 画像形成装置
JPH04267269A (ja) * 1991-02-22 1992-09-22 Canon Inc 画像形成装置
JPH052305A (ja) * 1991-06-26 1993-01-08 Toshiba Corp 画像形成装置
US5400120A (en) * 1991-11-14 1995-03-21 Matsushita Electric Industrial Co., Ltd. Electrophotographic apparatus
US5307119A (en) * 1992-12-31 1994-04-26 Xerox Corporation Method and apparatus for monitoring and controlling a toner image formation process

Also Published As

Publication number Publication date
EP0606067A3 (en) 1994-09-21
EP0858008B1 (de) 2003-07-09
EP0606067A2 (de) 1994-07-13
DE69432936D1 (de) 2003-08-14
DE69414426D1 (de) 1998-12-17
DE69432936T2 (de) 2004-05-13
EP0606067B1 (de) 1998-11-11
US5532794A (en) 1996-07-02
EP0858008A2 (de) 1998-08-12
EP0858008A3 (de) 2000-04-26

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8339 Ceased/non-payment of the annual fee