GB1439527A - Electrostatographic imaging apparatus including menas for detecting the density of application of toner particles - Google Patents

Electrostatographic imaging apparatus including menas for detecting the density of application of toner particles

Info

Publication number
GB1439527A
GB1439527A GB4632073A GB4632073A GB1439527A GB 1439527 A GB1439527 A GB 1439527A GB 4632073 A GB4632073 A GB 4632073A GB 4632073 A GB4632073 A GB 4632073A GB 1439527 A GB1439527 A GB 1439527A
Authority
GB
United Kingdom
Prior art keywords
toner particles
menas
density
detecting
application
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
GB4632073A
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 GB1439527A publication Critical patent/GB1439527A/en
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

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Dry Development In Electrophotography (AREA)
  • Control Or Security For Electrophotography (AREA)
  • Developing For Electrophotography (AREA)
  • Developing Agents For Electrophotography (AREA)
  • Color Electrophotography (AREA)
  • Investigating Or Analysing Materials By Optical Means (AREA)

Abstract

1439527 Developing electrostatic images XEROX CORP 4 Oct 1973 [6 Oct 1972] 46320/73 Heading G2H A measure of the deposition of toner particles on photo-conductive surface 12 is obtained by measuring the transmission of light through a transparent electrode 42, by means of a photosensor 46 which is associated with a light-pipe 48 and kept at a constant temperature by a surrounding heating apparatus 50.
GB4632073A 1972-10-06 1973-10-04 Electrostatographic imaging apparatus including menas for detecting the density of application of toner particles Expired GB1439527A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US00295775A US3817616A (en) 1972-10-06 1972-10-06 Thermal chamber for a developability regulating apparatus

Publications (1)

Publication Number Publication Date
GB1439527A true GB1439527A (en) 1976-06-16

Family

ID=23139190

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4632073A Expired GB1439527A (en) 1972-10-06 1973-10-04 Electrostatographic imaging apparatus including menas for detecting the density of application of toner particles

Country Status (6)

Country Link
US (1) US3817616A (en)
JP (1) JPS5334055B2 (en)
CA (1) CA991247A (en)
DE (1) DE2336866C3 (en)
GB (1) GB1439527A (en)
NL (1) NL7313379A (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4027621A (en) * 1975-03-14 1977-06-07 Xerox Corporation Developing system for electrostatic reproduction machines
NL7604400A (en) * 1976-04-26 1977-10-28 Oce Van Der Grinten Nv DEVICE FOR DEVELOPING AN ELECTROSTATIC CHARGING IMAGE.
JPS5842073A (en) * 1981-09-08 1983-03-11 Fuji Xerox Co Ltd Developer density controller
JPS58100140A (en) * 1981-12-10 1983-06-14 Ricoh Co Ltd Color electrophotography
JPS59293U (en) * 1982-06-24 1984-01-05 象印マホービン株式会社 Heater mounting device for electric heater
US20060269331A1 (en) * 2005-05-26 2006-11-30 Eastman Kodak Company Dry ink developer station warmer for improved dry ink charge control and dry ink concentration stability

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3251761A (en) * 1962-08-28 1966-05-17 Bayer Ag Process for the production of organic compounds containing nitrogen and chlorine combined in an-n=ccl-radical
US3348521A (en) * 1962-08-28 1967-10-24 Xerox Corp Automatic toner control system
US3327126A (en) * 1964-02-28 1967-06-20 Paul E V Shannon Emission spectrometer with cooled photomultiplier tube detector
US3376854A (en) * 1966-06-01 1968-04-09 Xerox Corp Automatic toner dispensing control
US3421009A (en) * 1966-06-14 1969-01-07 Felix P Caruthers Temperature compensated photosensor system
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

Also Published As

Publication number Publication date
DE2336866C3 (en) 1981-05-27
DE2336866B2 (en) 1980-09-04
JPS4974034A (en) 1974-07-17
JPS5334055B2 (en) 1978-09-19
DE2336866A1 (en) 1974-04-11
CA991247A (en) 1976-06-15
NL7313379A (en) 1973-12-27
US3817616A (en) 1974-06-18

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
746 Register noted 'licences of right' (sect. 46/1977)
PCNP Patent ceased through non-payment of renewal fee