FR2253233B1 - - Google Patents

Info

Publication number
FR2253233B1
FR2253233B1 FR7439536A FR7439536A FR2253233B1 FR 2253233 B1 FR2253233 B1 FR 2253233B1 FR 7439536 A FR7439536 A FR 7439536A FR 7439536 A FR7439536 A FR 7439536A FR 2253233 B1 FR2253233 B1 FR 2253233B1
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.)
Expired
Application number
FR7439536A
Other versions
FR2253233A1 (fr
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.)
AB Dick Co
Original Assignee
Multigraphics Inc
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 Multigraphics Inc filed Critical Multigraphics Inc
Publication of FR2253233A1 publication Critical patent/FR2253233A1/fr
Application granted granted Critical
Publication of FR2253233B1 publication Critical patent/FR2253233B1/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
FR7439536A 1973-12-03 1974-12-03 Expired FR2253233B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US421226A US3911861A (en) 1973-12-03 1973-12-03 Programmable toner concentration control

Publications (2)

Publication Number Publication Date
FR2253233A1 FR2253233A1 (fr) 1975-06-27
FR2253233B1 true FR2253233B1 (fr) 1978-09-15

Family

ID=23669688

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7439536A Expired FR2253233B1 (fr) 1973-12-03 1974-12-03

Country Status (5)

Country Link
US (1) US3911861A (fr)
CA (1) CA1034184A (fr)
DE (1) DE2456936A1 (fr)
FR (1) FR2253233B1 (fr)
GB (2) GB1483472A (fr)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4082445A (en) * 1975-11-21 1978-04-04 Xerox Corporation Toner control system for an electrostatic reproduction machine
JPS6020119Y2 (ja) * 1978-03-27 1985-06-17 株式会社東芝 トナ−濃度制御装置
US4179213A (en) * 1978-04-10 1979-12-18 International Business Machines Corporation Vector pinning in an electrophotographic machine
US4178095A (en) * 1978-04-10 1979-12-11 International Business Machines Corporation Abnormally low reflectance photoconductor sensing system
US4183657A (en) * 1978-04-10 1980-01-15 International Business Machines Corporation Dynamic reference for an image quality control system
US4372672A (en) * 1980-12-22 1983-02-08 International Business Machines Corporation Self-triggering quality control sensor
US4357901A (en) * 1981-09-03 1982-11-09 Bunnington Corporation Method and system for magnetically sensing and controlling toner concentration and optical density of copies in electrostatic reproduction
JPS5842073A (ja) * 1981-09-08 1983-03-11 Fuji Xerox Co Ltd 現像剤の濃度制御装置
US5192972A (en) * 1990-12-24 1993-03-09 Eastman Kodak Company Developer mix monitoring for color developer stations
US5148217A (en) * 1991-06-24 1992-09-15 Eastman Kodak Company Electrostatographic copier/printer densitometer insensitive to power supply variations
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 (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3580673A (en) * 1968-08-26 1971-05-25 Xerox Corp Cleaning apparatus
US3682132A (en) * 1969-03-03 1972-08-08 Xerox Corp Automatic developer controller
US3818864A (en) * 1971-09-14 1974-06-25 Xerox Corp Image developing apparatus
US3756192A (en) * 1971-12-17 1973-09-04 Ibm Automatic toner concentration control system
US3791744A (en) * 1972-02-22 1974-02-12 Dyk Res Corp Van Xerographic toner concentration measuring apparatus and method
US3801196A (en) * 1973-04-20 1974-04-02 Xerox Corp Toner concentration regulating apparatus

Also Published As

Publication number Publication date
CA1034184A (fr) 1978-07-04
FR2253233A1 (fr) 1975-06-27
US3911861A (en) 1975-10-14
GB1483472A (en) 1977-08-17
DE2456936A1 (de) 1975-06-05
GB1483471A (en) 1977-08-17

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Legal Events

Date Code Title Description
ST Notification of lapse