GB1398963A - Method of and apparatus for measuring or measuring and replacing toner consumed in an electrophotographic reproduction machine - Google Patents

Method of and apparatus for measuring or measuring and replacing toner consumed in an electrophotographic reproduction machine

Info

Publication number
GB1398963A
GB1398963A GB4398272A GB4398272A GB1398963A GB 1398963 A GB1398963 A GB 1398963A GB 4398272 A GB4398272 A GB 4398272A GB 4398272 A GB4398272 A GB 4398272A GB 1398963 A GB1398963 A GB 1398963A
Authority
GB
United Kingdom
Prior art keywords
toner
development
measuring
sept
photo
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
GB4398272A
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.)
Hoechst AG
Original Assignee
Hoechst AG
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 DE19712147948 external-priority patent/DE2147948C3/en
Application filed by Hoechst AG filed Critical Hoechst AG
Publication of GB1398963A publication Critical patent/GB1398963A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
    • G01N27/60—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating electrostatic variables, e.g. electrographic flaw testing
    • 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
    • G03G15/0851—Detection or control means for the developer concentration the concentration being measured by electrical 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
    • G03G15/0887—Arrangements for conveying and conditioning developer in the developing unit, e.g. agitating, removing impurities or humidity
    • G03G15/0891—Arrangements for conveying and conditioning developer in the developing unit, e.g. agitating, removing impurities or humidity for conveying or circulating developer, e.g. augers
    • 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

Landscapes

  • General Physics & Mathematics (AREA)
  • Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Dry Development In Electrophotography (AREA)

Abstract

1398963 Xerographic development; automatic control of concentration HOECHST AG 22 Sept 1972 [25 Sept 1971] 43982/72 Headings G2H and G3R Replenishment of toner in an electrostatic development apparatus forming part of an electrophotographic apparatus is controlled by an electrical measurement of voltage across or current through a resistor, representative of the amount of toner transferred to an electrostatic latent image undergoing development. Preferably the development apparatus is electrically insulated, and receives a charge from circulating carrier particles equal and opposite to that passed by toner particles to a photo-conductive surface 2 undergoing development. Alternatively an insulated electrically conductive plate may sample a proportion of used toner cascading from the photo-conductive surface. In either case the measurements control a toner replenishment apparatus, suitably comprising a hopper 15 and grooved roller 17. Two toner sources may be arranged to supply toner in parallel, one responding to a count of the number of copies produced and the other making up a residual requirement.
GB4398272A 1971-09-25 1972-09-22 Method of and apparatus for measuring or measuring and replacing toner consumed in an electrophotographic reproduction machine Expired GB1398963A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19712147948 DE2147948C3 (en) 1971-09-25 Method and device for measuring the removal of toner in an electrophotographic reproduction machine

Publications (1)

Publication Number Publication Date
GB1398963A true GB1398963A (en) 1975-06-25

Family

ID=5820561

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4398272A Expired GB1398963A (en) 1971-09-25 1972-09-22 Method of and apparatus for measuring or measuring and replacing toner consumed in an electrophotographic reproduction machine

Country Status (6)

Country Link
US (1) US3910459A (en)
JP (1) JPS5547390B2 (en)
AU (1) AU467941B2 (en)
FR (1) FR2154252A5 (en)
GB (1) GB1398963A (en)
NL (1) NL7212544A (en)

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3821938A (en) * 1971-12-17 1974-07-02 Ibm Toner usage sensing system
JPS5953538B2 (en) * 1975-04-07 1984-12-25 株式会社リコー Toner concentration detection method
US4064834A (en) * 1976-11-19 1977-12-27 A. B. Dick Company Apparatus for sensing the concentration of toner in a developer mix
DE2715904C3 (en) * 1977-04-09 1981-05-27 Agfa-Gevaert Ag, 5090 Leverkusen Cascade developing device for an electrostatic copier
US4288518A (en) * 1978-12-13 1981-09-08 Minolta Camera Kabushiki Kaisha Electrographic magnetic developing method
US4310238A (en) * 1979-09-08 1982-01-12 Ricoh Company, Ltd. Electrostatic copying apparatus
US4343548A (en) * 1980-05-19 1982-08-10 Xerox Corporation Control system for regulating the concentration of toner particles within a developer mixture
US4524088A (en) * 1983-01-31 1985-06-18 Magnetic Technologies Corp. Method and apparatus for controlling the thickness of developer on an applicator, such as a magnetic brush, in electrostatic reproduction
US4492179A (en) * 1983-06-16 1985-01-08 Xerox Corporation Control system for regulating the dispensing of marking particles in an electrophotographic printing machine
US4660152A (en) * 1984-06-18 1987-04-21 Xerox Corporation System and method for monitoring and maintaining concentrate material in a fluid carrier
US4607944A (en) * 1985-06-07 1986-08-26 Eastman Kodak Company Apparatus for controlling toner replenishment in electrographic copier
JPS61292665A (en) * 1985-06-20 1986-12-23 Sanyo Electric Co Ltd Toner concentration detecting device
US5150135A (en) * 1990-08-20 1992-09-22 Xerox Corporation Current sensing development control system for an ionographic printing machine
US6275675B1 (en) * 1999-09-14 2001-08-14 Lester E. Cornelius Electronically conducting segmented hopper construction for toner cartridge
JP6864820B2 (en) * 2016-07-25 2021-04-28 富士フイルムビジネスイノベーション株式会社 Development system and image forming equipment

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2965266A (en) * 1958-04-30 1960-12-20 Haloid Xerox Inc Xerographic toner dispenser
US3376853A (en) * 1966-04-29 1968-04-09 Xerox Corp Electrostatic toner control
US3409901A (en) * 1967-07-12 1968-11-05 Ibm Automatic toner concentration control for use with crt input
US3656509A (en) * 1970-02-05 1972-04-18 Minolta Camera Kk Automatic toner feeding device for electronic copying machines
US3674353A (en) * 1971-07-01 1972-07-04 Eastman Kodak Co Toner concentration control apparatus
US3719165A (en) * 1971-09-03 1973-03-06 Eastman Kodak Co Tuner concentration control apparatus

Also Published As

Publication number Publication date
US3910459A (en) 1975-10-07
NL7212544A (en) 1973-03-27
AU467941B2 (en) 1975-12-18
DE2147948B2 (en) 1977-06-30
AU4665572A (en) 1974-03-21
DE2147948A1 (en) 1973-03-29
JPS4842739A (en) 1973-06-21
JPS5547390B2 (en) 1980-11-29
FR2154252A5 (en) 1973-05-04

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee