DE3471533D1 - Electrographic apparatus - Google Patents

Electrographic apparatus

Info

Publication number
DE3471533D1
DE3471533D1 DE8484106454T DE3471533T DE3471533D1 DE 3471533 D1 DE3471533 D1 DE 3471533D1 DE 8484106454 T DE8484106454 T DE 8484106454T DE 3471533 T DE3471533 T DE 3471533T DE 3471533 D1 DE3471533 D1 DE 3471533D1
Authority
DE
Germany
Prior art keywords
electrographic apparatus
electrographic
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
DE8484106454T
Other languages
English (en)
Inventor
William L Ernst
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.)
Eastman Kodak Co
Original Assignee
Eastman Kodak Co
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 Eastman Kodak Co filed Critical Eastman Kodak Co
Application granted granted Critical
Publication of DE3471533D1 publication Critical patent/DE3471533D1/de
Expired 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
    • 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
    • G03G15/5041—Detecting a toner image, e.g. density, toner coverage, using a test patch
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S222/00—Dispensing
    • Y10S222/01—Xerography
DE8484106454T 1983-06-20 1984-06-07 Electrographic apparatus Expired DE3471533D1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US06/506,094 US4506973A (en) 1983-06-20 1983-06-20 Toner concentration monitoring apparatus located behind a transparent photoconductor

Publications (1)

Publication Number Publication Date
DE3471533D1 true DE3471533D1 (de) 1988-06-30

Family

ID=24013155

Family Applications (1)

Application Number Title Priority Date Filing Date
DE8484106454T Expired DE3471533D1 (de) 1983-06-20 1984-06-07 Electrographic apparatus

Country Status (5)

Country Link
US (1) US4506973A (de)
EP (1) EP0129750B1 (de)
JP (1) JPS6012566A (de)
CA (1) CA1213638A (de)
DE (1) DE3471533D1 (de)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4550254A (en) * 1984-01-16 1985-10-29 Xerox Corporation Low cost infrared reflectance densitometer signal processor chip
US4626096A (en) * 1984-04-02 1986-12-02 Canon Kabushiki Kaisha Image forming apparatus for forming a visual image in accordance with image signals
JPS62229170A (ja) * 1986-03-29 1987-10-07 Toshiba Corp 画像形成装置
US4833506A (en) * 1986-05-30 1989-05-23 Konishiroku Photo Industry Co., Ltd. Method and apparatus for controlling toner density of copying device
US4967238A (en) * 1988-12-22 1990-10-30 Xerox Corporation Cleaning performance monitor
JPH0786718B2 (ja) * 1989-03-10 1995-09-20 三田工業株式会社 感光性トナーの濃度検出方法および検出装置
JPH06161335A (ja) * 1992-07-03 1994-06-07 Fuji Xerox Co Ltd 電子写真複写機等の画像形成装置
JP3605042B2 (ja) * 2001-03-28 2004-12-22 キヤノン株式会社 定着装置

Family Cites Families (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3553464A (en) * 1967-03-27 1971-01-05 Ricoh Kk Device for detecting the density of developer in an electrostatographic duplicator
US3610205A (en) * 1968-10-17 1971-10-05 Continental Can Co Apparatus for measuring and controlling mixture content
FR2021354A1 (de) * 1968-10-23 1970-07-24 Eastman Kodak Co
US3830401A (en) * 1971-12-13 1974-08-20 Eastman Kodak Co Toner concentration monitoring apparatus
US3756192A (en) * 1971-12-17 1973-09-04 Ibm Automatic toner concentration control system
US3876106A (en) * 1973-10-01 1975-04-08 Eastman Kodak Co Toner concentration monitoring apparatus utilizing programmable digital computer
US3926145A (en) * 1974-03-04 1975-12-16 Honeywell Inf Systems Toner concentration detector
JPS5426745A (en) * 1977-07-29 1979-02-28 Eastman Kodak Co Monitoring method and apparatus of toner concentration
US4141645A (en) * 1977-07-29 1979-02-27 Eastman Kodak Company Toner concentration monitor
US4155638A (en) * 1978-03-02 1979-05-22 Eastman Kodak Company Toner concentration monitor
JPS5946391B2 (ja) * 1977-11-30 1984-11-12 株式会社リコー 磁気ブラシ現像装置
US4318610A (en) * 1980-04-21 1982-03-09 Xerox Corporation Control system for an electrophotographic printing machine
JPS5726878A (en) * 1980-07-23 1982-02-13 Mita Ind Co Ltd Display device for remaining amount of two component type developer
US4372672A (en) * 1980-12-22 1983-02-08 International Business Machines Corporation Self-triggering quality control sensor
JPS57108641A (en) * 1980-12-25 1982-07-06 Canon Inc Device for detecting concentration of developing agent
JPS57154973A (en) * 1981-03-19 1982-09-24 Minolta Camera Co Ltd Controller of electrostatic recorder
JPS57202569A (en) * 1981-06-08 1982-12-11 Minolta Camera Co Ltd Electrophotographic copier
US4377338A (en) * 1981-08-07 1983-03-22 International Business Machines Corporation Method and apparatus for copier quality monitoring and control

Also Published As

Publication number Publication date
CA1213638A (en) 1986-11-04
EP0129750B1 (de) 1988-05-25
US4506973A (en) 1985-03-26
EP0129750A3 (en) 1985-04-17
JPS6012566A (ja) 1985-01-22
EP0129750A2 (de) 1985-01-02

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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