GB1430876A - Apparatus for developing an electrostatic latent image - Google Patents

Apparatus for developing an electrostatic latent image

Info

Publication number
GB1430876A
GB1430876A GB199974A GB199974A GB1430876A GB 1430876 A GB1430876 A GB 1430876A GB 199974 A GB199974 A GB 199974A GB 199974 A GB199974 A GB 199974A GB 1430876 A GB1430876 A GB 1430876A
Authority
GB
United Kingdom
Prior art keywords
roller
particles
latent image
development
act
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
GB199974A
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
Priority claimed from US324466A external-priority patent/US3865080A/en
Priority claimed from US346485A external-priority patent/US3911865A/en
Application filed by Xerox Corp filed Critical Xerox Corp
Publication of GB1430876A publication Critical patent/GB1430876A/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
    • G03G15/0887—Arrangements for conveying and conditioning developer in the developing unit, e.g. agitating, removing impurities or humidity
    • 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
    • G03G15/0889—Arrangements for conveying and conditioning developer in the developing unit, e.g. agitating, removing impurities or humidity for agitation or stirring

Landscapes

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

Abstract

1430876 Developing electrostatic latent images XEROX CORP 16 Jan 1974 [17 Jan 1973 30 March 1973] 01999/74 Heading G2H When an electrostatic latent image on drum 10 is developed with a carrier particle/toner particle mix, toner particles which have an insufficient electrostatic charge, or are charged to the wrong polarity, are removed from the developer by being caused to cling to roller 52 to prevent them from adhering to the background areas of the latent image. Two rollers may operate together, one removing particles of insufficient charge and the other particles of wrong polarity, or the roller may be divided into sections. The roller may act in conjunction with a development electrode, or may act as a development electrode. Where a sectional roller is used to remove both kinds of undesired particles, and also to act as a development electrode, it is rotated at such a rate that its average potential acts in development. Removal may take place in both cascade and magnetic development apparatus.
GB199974A 1973-01-17 1974-01-16 Apparatus for developing an electrostatic latent image Expired GB1430876A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US324466A US3865080A (en) 1973-01-17 1973-01-17 Toner pickoff apparatus
US346485A US3911865A (en) 1973-03-30 1973-03-30 Toner pickoff apparatus

Publications (1)

Publication Number Publication Date
GB1430876A true GB1430876A (en) 1976-04-07

Family

ID=26984472

Family Applications (1)

Application Number Title Priority Date Filing Date
GB199974A Expired GB1430876A (en) 1973-01-17 1974-01-16 Apparatus for developing an electrostatic latent image

Country Status (4)

Country Link
DE (1) DE2401932A1 (en)
FR (1) FR2214144B1 (en)
GB (1) GB1430876A (en)
NL (1) NL7400678A (en)

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3357403A (en) * 1967-01-03 1967-12-12 Xerox Corp Powder cloud development apparatus
BE791193A (en) * 1971-11-11 1973-05-10 Xerox Corp XEROGRAPHIC DEVELOPMENT DEVICES

Also Published As

Publication number Publication date
DE2401932A1 (en) 1974-07-18
NL7400678A (en) 1974-07-19
FR2214144A1 (en) 1974-08-09
FR2214144B1 (en) 1977-06-10

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee