FR2225782B1 - - Google Patents

Info

Publication number
FR2225782B1
FR2225782B1 FR7413189A FR7413189A FR2225782B1 FR 2225782 B1 FR2225782 B1 FR 2225782B1 FR 7413189 A FR7413189 A FR 7413189A FR 7413189 A FR7413189 A FR 7413189A FR 2225782 B1 FR2225782 B1 FR 2225782B1
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
FR7413189A
Other languages
French (fr)
Other versions
FR2225782A1 (it
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.)
Xerox Corp
Original Assignee
Xerox 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
Application filed by Xerox Corp filed Critical Xerox Corp
Publication of FR2225782A1 publication Critical patent/FR2225782A1/fr
Application granted granted Critical
Publication of FR2225782B1 publication Critical patent/FR2225782B1/fr
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
    • G05D21/00—Control of chemical or physico-chemical variables, e.g. pH value
    • G05D21/02—Control of chemical or physico-chemical variables, e.g. pH value characterised by the use of electric 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
    • G03G15/06—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
    • 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
FR7413189A 1973-04-16 1974-04-16 Expired FR2225782B1 (it)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US351741A US3873002A (en) 1973-04-16 1973-04-16 Toner dispenser logic control

Publications (2)

Publication Number Publication Date
FR2225782A1 FR2225782A1 (it) 1974-11-08
FR2225782B1 true FR2225782B1 (it) 1978-01-20

Family

ID=23382178

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7413189A Expired FR2225782B1 (it) 1973-04-16 1974-04-16

Country Status (11)

Country Link
US (1) US3873002A (it)
JP (1) JPS544853B2 (it)
AU (1) AU6791674A (it)
BE (1) BE813798A (it)
BR (1) BR7403036D0 (it)
CA (1) CA1008915A (it)
DE (1) DE2408411A1 (it)
FR (1) FR2225782B1 (it)
GB (1) GB1457565A (it)
IT (1) IT1009837B (it)
NL (1) NL7404416A (it)

Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4065031A (en) * 1976-07-23 1977-12-27 Xerox Corporation Programmable development control system
JPS5540449A (en) * 1978-09-14 1980-03-21 Ricoh Co Ltd Method for detecting development capability of two-color developer and developing apparatus provided with unit using its method
US4551004A (en) * 1980-10-21 1985-11-05 Xerox Corporation Toner concentration sensor
JPS57158849A (en) * 1981-03-27 1982-09-30 Konishiroku Photo Ind Co Ltd Toner replenishing method
US4635819A (en) * 1982-01-28 1987-01-13 K-Tron International, Inc. Apparatus and method for improving the accuracy of a loss-in-weight feeding system
GB2127590B (en) * 1982-09-21 1987-04-15 Xerox Corp Toner density control
DE68915084T2 (de) * 1988-08-31 1994-09-01 Canon Kk Bildaufzeichnungsgerät.
US5081491A (en) * 1990-12-04 1992-01-14 Xerox Corporation Toner maintenance subsystem for a printing machine
GB2259583B (en) * 1991-09-11 1995-08-16 Xerox Corp Toner monitoring in an electrostatographic printing/digital copying machine
US5574539A (en) * 1995-09-18 1996-11-12 Xerox Corporation Toner maintenance subsystem for a printing machine
US5890042A (en) * 1996-03-29 1999-03-30 Xerox Corporation Hybrid jumping developer with pulse width compensated toner mass control
US5887221A (en) * 1997-10-20 1999-03-23 Xerox Corporation Signature sensing for optimum toner control with donor roll
US6580882B2 (en) 2001-10-04 2003-06-17 Xerox Corporation Low cost trim-gap-conductivity TC sensor
US20030113649A1 (en) * 2001-12-12 2003-06-19 Xerox Corporation Developer composition having improved noise signal ratio in an optical toner concentration sensing system
US6606463B2 (en) 2001-12-12 2003-08-12 Xerox Corporation Optical toner concentration sensor
US8145078B2 (en) * 2008-05-27 2012-03-27 Xerox Corporation Toner concentration system control with state estimators and state feedback methods

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2978951A (en) * 1958-02-13 1961-04-11 Proctor Silex Corp Method and system of color monitoring
US3409901A (en) * 1967-07-12 1968-11-05 Ibm Automatic toner concentration control for use with crt input
US3526338A (en) * 1968-01-02 1970-09-01 Xerox Corp Method and controller for dispensing electroscopic material
US3572551A (en) * 1969-03-27 1971-03-30 Rca Corp Apparatus for monitoring and controlling the concentration of toner in a developer mix
US3777935A (en) * 1971-10-19 1973-12-11 Storey W Pulse capture unit and apparatus for controlling the blending of two flowable substances

Also Published As

Publication number Publication date
NL7404416A (it) 1974-10-18
BE813798A (fr) 1974-08-16
GB1457565A (en) 1976-12-08
JPS5031829A (it) 1975-03-28
CA1008915A (en) 1977-04-19
AU6791674A (en) 1975-10-16
DE2408411A1 (de) 1974-10-31
FR2225782A1 (it) 1974-11-08
JPS544853B2 (it) 1979-03-10
BR7403036D0 (pt) 1974-11-19
US3873002A (en) 1975-03-25
IT1009837B (it) 1976-12-20

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Legal Events

Date Code Title Description
ST Notification of lapse