FR2245988A1 - - Google Patents

Info

Publication number
FR2245988A1
FR2245988A1 FR7432454A FR7432454A FR2245988A1 FR 2245988 A1 FR2245988 A1 FR 2245988A1 FR 7432454 A FR7432454 A FR 7432454A FR 7432454 A FR7432454 A FR 7432454A FR 2245988 A1 FR2245988 A1 FR 2245988A1
Authority
FR
France
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
FR7432454A
Other languages
French (fr)
Other versions
FR2245988B1 (en
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
Publication of FR2245988A1 publication Critical patent/FR2245988A1/fr
Application granted granted Critical
Publication of FR2245988B1 publication Critical patent/FR2245988B1/fr
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
    • 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
FR7432454A 1973-10-01 1974-09-26 Expired FR2245988B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US402222A US3876106A (en) 1973-10-01 1973-10-01 Toner concentration monitoring apparatus utilizing programmable digital computer

Publications (2)

Publication Number Publication Date
FR2245988A1 true FR2245988A1 (en) 1975-04-25
FR2245988B1 FR2245988B1 (en) 1979-02-02

Family

ID=23591035

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7432454A Expired FR2245988B1 (en) 1973-10-01 1974-09-26

Country Status (3)

Country Link
US (1) US3876106A (en)
FR (1) FR2245988B1 (en)
GB (1) GB1474458A (en)

Families Citing this family (30)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL7316541A (en) * 1972-12-05 1974-06-07
JPS5146133A (en) * 1974-10-18 1976-04-20 Ricoh Kk Jikigenzosochi
US4013041A (en) * 1975-10-24 1977-03-22 Eastman Kodak Company Self-compensating photoconductor web
US4032227A (en) * 1976-01-15 1977-06-28 International Business Machines Corporation Toner concentration control apparatus
US4065031A (en) * 1976-07-23 1977-12-27 Xerox Corporation Programmable development control system
US4108545A (en) * 1976-12-20 1978-08-22 Pitney-Bowes, Inc. Developer supply control system in a copier
DE2732673A1 (en) * 1977-03-25 1978-09-28 Eastman Kodak Co Sheet copying and stacking machine - has logic system to control operation of collector so that complete batches can be formed from partial batches
JPS53118962A (en) * 1977-03-28 1978-10-17 Canon Inc Analog-to-digital converting unit
FR2406239A1 (en) * 1977-05-31 1979-05-11 Canon Kk AUTOMATICALLY ADJUSTABLE FORMAT IMAGE FORMAT DEVICE
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
US4144550A (en) * 1977-08-30 1979-03-13 Xerox Corporation Reproduction machine using fiber optics communication system
US4183089A (en) * 1977-08-30 1980-01-08 Xerox Corporation Data communications system for a reproduction machine having a master and secondary controllers
US4306803A (en) * 1977-08-30 1981-12-22 Xerox Corporation Microprocessor and control apparatus in a photocopier
JPS54143144A (en) * 1978-04-14 1979-11-08 Konishiroku Photo Ind Co Ltd Image density detecting method and apparatus for zerographic copier
US4310238A (en) * 1979-09-08 1982-01-12 Ricoh Company, Ltd. Electrostatic copying apparatus
DE3040366C2 (en) * 1979-10-29 1986-11-20 Konishiroku Photo Industry Co. Ltd., Tokio/Tokyo Device for regulating the exposure or development in a copier when making copies with a white background from colored originals
JPS56121068A (en) * 1980-02-27 1981-09-22 Mita Ind Co Ltd Developing device of electrostatic copying machine
US4341461A (en) * 1980-04-07 1982-07-27 Xerox Corporation Development control of a reproduction machine
US4551004A (en) * 1980-10-21 1985-11-05 Xerox Corporation Toner concentration sensor
JPS5885448A (en) * 1981-11-17 1983-05-21 Ricoh Co Ltd Controlling method for recording density
JPS59170867A (en) * 1983-03-17 1984-09-27 Minolta Camera Co Ltd Control method of toner density
US4506973A (en) * 1983-06-20 1985-03-26 Eastman Kodak Company Toner concentration monitoring apparatus located behind a transparent photoconductor
JPS6063632A (en) * 1984-03-28 1985-04-12 Canon Inc Analog-digital converter
US4733798A (en) * 1986-02-05 1988-03-29 Ecolab Inc. Method and apparatus for controlling the concentration of a chemical solution
JPS62229170A (en) * 1986-03-29 1987-10-07 Toshiba Corp Image forming device
JP2812335B2 (en) * 1988-08-31 1998-10-22 京セラ株式会社 Toner density control method
US5119132A (en) * 1990-10-24 1992-06-02 Xerox Corporation Densitometer and circuitry with improved measuring capabilities of marking particle density on a photoreceptor
US6427057B1 (en) * 2000-08-15 2002-07-30 Heidelberger Druckmaschinen Ag Image-forming machine with a pulse densitometer
US8145078B2 (en) * 2008-05-27 2012-03-27 Xerox Corporation Toner concentration system control with state estimators and state feedback methods

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2110758A5 (en) * 1970-10-29 1972-06-02 Sercel Rech Const Elect
US3777173A (en) * 1972-02-22 1973-12-04 Dyke Res Van Xerographic toner concentration measuring apparatus and method

Also Published As

Publication number Publication date
GB1474458A (en) 1977-05-25
US3876106A (en) 1975-04-08
FR2245988B1 (en) 1979-02-02

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Legal Events

Date Code Title Description
ST Notification of lapse