DE68919015D1 - Verfahren und Vorrichtung zur Steuerung der Tonerdichte in einem elektrostatischen einen Toner verwendenden Druckgerät. - Google Patents

Verfahren und Vorrichtung zur Steuerung der Tonerdichte in einem elektrostatischen einen Toner verwendenden Druckgerät.

Info

Publication number
DE68919015D1
DE68919015D1 DE68919015T DE68919015T DE68919015D1 DE 68919015 D1 DE68919015 D1 DE 68919015D1 DE 68919015 T DE68919015 T DE 68919015T DE 68919015 T DE68919015 T DE 68919015T DE 68919015 D1 DE68919015 D1 DE 68919015D1
Authority
DE
Germany
Prior art keywords
toner
printing device
electrostatic printing
controlling
toner density
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
DE68919015T
Other languages
English (en)
Other versions
DE68919015T2 (de
Inventor
Fumiaki Seto
Yutaka Takenaka
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.)
Fujitsu Ltd
Original Assignee
Fujitsu 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
Priority claimed from JP63193983A external-priority patent/JP2526274B2/ja
Priority claimed from JP20793288A external-priority patent/JPH0256577A/ja
Application filed by Fujitsu Ltd filed Critical Fujitsu Ltd
Application granted granted Critical
Publication of DE68919015D1 publication Critical patent/DE68919015D1/de
Publication of DE68919015T2 publication Critical patent/DE68919015T2/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
    • G03G15/06—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
    • 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
    • G03G15/0855—Detection or control means for the developer concentration the concentration being measured by optical means
    • 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
    • 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

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Control Or Security For Electrophotography (AREA)
  • Dry Development In Electrophotography (AREA)
DE68919015T 1988-08-03 1989-08-03 Verfahren und Vorrichtung zur Steuerung der Tonerdichte in einem elektrostatischen einen Toner verwendenden Druckgerät. Expired - Fee Related DE68919015T2 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP63193983A JP2526274B2 (ja) 1988-08-03 1988-08-03 印刷装置の制御方法
JP20793288A JPH0256577A (ja) 1988-08-22 1988-08-22 トナー濃度制御装置

Publications (2)

Publication Number Publication Date
DE68919015D1 true DE68919015D1 (de) 1994-12-01
DE68919015T2 DE68919015T2 (de) 1995-02-23

Family

ID=26508226

Family Applications (1)

Application Number Title Priority Date Filing Date
DE68919015T Expired - Fee Related DE68919015T2 (de) 1988-08-03 1989-08-03 Verfahren und Vorrichtung zur Steuerung der Tonerdichte in einem elektrostatischen einen Toner verwendenden Druckgerät.

Country Status (3)

Country Link
US (1) US5097293A (de)
EP (1) EP0354128B1 (de)
DE (1) DE68919015T2 (de)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5293198A (en) * 1990-08-10 1994-03-08 Ricoh Company, Ltd. Image forming apparatus for controlling the dynamic range of an image
JP3143521B2 (ja) * 1992-06-17 2001-03-07 シャープ株式会社 電子画像形成装置
JPH0736230A (ja) * 1993-07-16 1995-02-07 Mita Ind Co Ltd 画像濃度制御方法
JP3140329B2 (ja) * 1995-06-02 2001-03-05 シャープ株式会社 画像形成装置
JP3331294B2 (ja) * 1996-11-28 2002-10-07 シャープ株式会社 トナー濃度測定機能付き画像形成装置
US6373045B1 (en) * 1999-06-29 2002-04-16 Infineon Technologies North America Corp. High speed optocoupler detector
JP4358378B2 (ja) * 1999-09-20 2009-11-04 東芝テック株式会社 画像形成装置
KR20160012594A (ko) * 2014-07-24 2016-02-03 삼성전자주식회사 화상형성장치 및 그 제어방법
JP6938445B2 (ja) * 2018-07-19 2021-09-22 キヤノン株式会社 画像形成装置

Family Cites Families (28)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB212750A (en) * 1923-03-23 1924-03-20 Percy St George Kirke Improvements in internal combustion engines
US4082445A (en) * 1975-11-21 1978-04-04 Xerox Corporation Toner control system for an electrostatic reproduction machine
JPS5497038A (en) * 1978-01-17 1979-07-31 Konishiroku Photo Ind Co Ltd Image density controller for zerographic copier
US4178095A (en) * 1978-04-10 1979-12-11 International Business Machines Corporation Abnormally low reflectance photoconductor sensing system
JPS54143144A (en) * 1978-04-14 1979-11-08 Konishiroku Photo Ind Co Ltd Image density detecting method and apparatus for zerographic copier
US4279498A (en) * 1978-12-28 1981-07-21 Ricoh Company, Ltd. Electrostatographic copying apparatus with automatic toner density control
US4312589A (en) * 1979-11-19 1982-01-26 International Business Machines Corporation Charge density control for an electrostatic copier
US4372672A (en) * 1980-12-22 1983-02-08 International Business Machines Corporation Self-triggering quality control sensor
JPS5835552A (ja) * 1981-08-28 1983-03-02 Fujitsu Ltd トナ−濃度制御装置におけるセンサのレベル低下検知方式
JPS5886563A (ja) * 1981-11-18 1983-05-24 Fuji Xerox Co Ltd 電子複写機
DE3304470A1 (de) * 1982-02-09 1983-08-18 Ricoh Co., Ltd., Tokyo Verfahren zum steuern eines kopierablaufs
JPS5915263A (ja) * 1982-07-15 1984-01-26 Minolta Camera Co Ltd 複写機
JPS5930565A (ja) * 1982-08-13 1984-02-18 Fuji Xerox Co Ltd 電子複写機の画像濃度制御装置
JPS5948776A (ja) * 1982-09-13 1984-03-21 Ricoh Co Ltd フオトセンサ出力補正装置
GB2127590B (en) * 1982-09-21 1987-04-15 Xerox Corp Toner density control
JPS5953869A (ja) * 1982-09-22 1984-03-28 Ricoh Co Ltd フオトセンサ出力補正装置
US4502778A (en) * 1982-12-27 1985-03-05 International Business Machines Corporation System for monitoring and controlling electrophotographic toner operation
JPS60131574A (ja) * 1983-12-21 1985-07-13 Fuji Xerox Co Ltd 画像濃度制御方法
JPS60208182A (ja) * 1984-03-30 1985-10-19 Canon Inc ビデオ画像記録装置
US4670647A (en) * 1984-09-27 1987-06-02 Xerox Corporation Dirt insensitive optical paper path sensor
US4833506A (en) * 1986-05-30 1989-05-23 Konishiroku Photo Industry Co., Ltd. Method and apparatus for controlling toner density of copying device
JPS63110477A (ja) * 1986-10-29 1988-05-14 Konica Corp トナ−濃度制御用センサの汚れ補償装置
US4801980A (en) * 1986-10-29 1989-01-31 Konica Corporation Toner density control apparatus
JPS63110476A (ja) * 1986-10-29 1988-05-14 Konica Corp トナ−濃度制御用センサの汚れ補償装置
JPS63121067A (ja) * 1986-11-10 1988-05-25 Ricoh Co Ltd トナ−濃度制御装置
JPS63223760A (ja) * 1987-03-13 1988-09-19 Canon Inc 画像形成装置
JP2573851B2 (ja) * 1987-09-25 1997-01-22 コニカ株式会社 トナー濃度制御装置におけるセンサ汚れ補償装置
US4951088A (en) * 1988-12-13 1990-08-21 International Business Machines Corporation Toner mass developed control ratio modification system

Also Published As

Publication number Publication date
DE68919015T2 (de) 1995-02-23
EP0354128A2 (de) 1990-02-07
US5097293A (en) 1992-03-17
EP0354128A3 (de) 1991-07-24
EP0354128B1 (de) 1994-10-26

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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