GB1213493A - Xerographic development apparatus - Google Patents

Xerographic development apparatus

Info

Publication number
GB1213493A
GB1213493A GB03513/68A GB1351368A GB1213493A GB 1213493 A GB1213493 A GB 1213493A GB 03513/68 A GB03513/68 A GB 03513/68A GB 1351368 A GB1351368 A GB 1351368A GB 1213493 A GB1213493 A GB 1213493A
Authority
GB
United Kingdom
Prior art keywords
toner particles
carrier
particles
roller
toner
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
GB03513/68A
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 Ltd
Original Assignee
Rank Xerox Ltd
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 Rank Xerox Ltd filed Critical Rank Xerox Ltd
Publication of GB1213493A publication Critical patent/GB1213493A/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
    • G03G15/0801—Apparatus for electrographic processes using a charge pattern for developing using a solid developer, e.g. powder developer for cascading
    • 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
    • G03G15/0877—Arrangements for metering and dispensing developer from a developer cartridge into the development unit
    • 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

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Dry Development In Electrophotography (AREA)
  • Magnetic Brush Developing In Electrophotography (AREA)

Abstract

1,213,493. Developing electrostatic images. RANK XEROX Ltd. March 20, 1968 [March 23, 1967], No. 13513/68. Heading G2H. An apparatus for dispensing toner particles 52 comprises a guide 39 to direct developer 36 comprising carrier and toner particles in a path towards a development zone, a roller 40 having a core 45 and a cover 47 of a material having tribolectric characteristics similar to the carrier particles, a hopper enclosing toner particles above the roller 40, such that upon rotation of the roller toner particles are dispensed from the hopper in an amount to replace toner particles depleted from the carrier particles 39. The transfer of toner particles 52 from the roller 40 to the carrier particles in the developer 36 continuing until such time as the electrostatic attraction between the carrier and toner particles equals that between the cover 47 and toner particles. A variable D. C. potential 70 connected to the core 45 varies the electrostatic attraction of toner to the cover 47, to control the toner concentration in the developer and so provides selective development of images.
GB03513/68A 1967-03-23 1968-03-20 Xerographic development apparatus Expired GB1213493A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US62533567A 1967-03-23 1967-03-23

Publications (1)

Publication Number Publication Date
GB1213493A true GB1213493A (en) 1970-11-25

Family

ID=24505591

Family Applications (1)

Application Number Title Priority Date Filing Date
GB03513/68A Expired GB1213493A (en) 1967-03-23 1968-03-20 Xerographic development apparatus

Country Status (6)

Country Link
US (1) US3453045A (en)
DE (1) DE1772023A1 (en)
FR (1) FR1559973A (en)
GB (1) GB1213493A (en)
NL (1) NL6803924A (en)
SU (1) SU371739A3 (en)

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT325005B (en) * 1967-11-20 1975-09-25 Benno Saladin PROCESS AND DEVICE FOR COATING IN ENDLESS TRAILS OR IN FORMAT CUT DOCUMENTS WITH POWDERED MATERIALS
US3635553A (en) * 1969-09-22 1972-01-18 Xerox Corp Cascade developing apparatus utilizing a rotary wheel with scoops
US3662711A (en) * 1970-03-19 1972-05-16 Xerox Corp Development apparatus
US3697169A (en) * 1971-01-06 1972-10-10 Xerox Corp Electrostatic recording apparatus and method
US3937570A (en) * 1971-06-03 1976-02-10 Xerox Corporation Cloud suppression in an electrostatic copying apparatus
US3911865A (en) * 1973-03-30 1975-10-14 Xerox Corp Toner pickoff apparatus
US3951539A (en) * 1974-10-15 1976-04-20 Xerox Corporation Electrostatic reproduction machine with improved toner dispensing apparatus
US4230070A (en) * 1977-08-24 1980-10-28 Minolta Camera Kabushiki Kaisha Device for automatically replenishing toner to dry-type developing apparatus for electrophotography
US4347299A (en) * 1978-08-16 1982-08-31 Minolta Camera Kabushiki Kaisha Method of controlling toner concentration for electrophotographic copying apparatus
US4288518A (en) * 1978-12-13 1981-09-08 Minolta Camera Kabushiki Kaisha Electrographic magnetic developing method
JPS5955463A (en) * 1982-09-24 1984-03-30 Mita Ind Co Ltd Toner density controlling method of two-component developer
US6623579B1 (en) * 1999-11-02 2003-09-23 Alien Technology Corporation Methods and apparatus for fluidic self assembly
US6479395B1 (en) * 1999-11-02 2002-11-12 Alien Technology Corporation Methods for forming openings in a substrate and apparatuses with these openings and methods for creating assemblies with openings
US7452748B1 (en) 2004-11-08 2008-11-18 Alien Technology Corporation Strap assembly comprising functional block deposited therein and method of making same

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3013703A (en) * 1958-11-28 1961-12-19 Xerox Corp Powder dispensing apparatus
US3152012A (en) * 1960-12-19 1964-10-06 Ibm Apparatus for the development of electrostatic images
US3094049A (en) * 1961-02-03 1963-06-18 Xerox Corp Xerographic developer measuring apparatus
US3376854A (en) * 1966-06-01 1968-04-09 Xerox Corp Automatic toner dispensing control

Also Published As

Publication number Publication date
SU371739A3 (en) 1973-02-22
NL6803924A (en) 1968-09-24
FR1559973A (en) 1969-03-14
DE1772023A1 (en) 1971-01-07
US3453045A (en) 1969-07-01

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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