GB1306630A - Electrophotographic development mixtures - Google Patents

Electrophotographic development mixtures

Info

Publication number
GB1306630A
GB1306630A GB3029871*[A GB1306630DA GB1306630A GB 1306630 A GB1306630 A GB 1306630A GB 1306630D A GB1306630D A GB 1306630DA GB 1306630 A GB1306630 A GB 1306630A
Authority
GB
United Kingdom
Prior art keywords
coating
fluoropolymer
core material
modifying agent
microns
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
GB3029871*[A
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.)
International Business Machines Corp
Original Assignee
International Business Machines 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 International Business Machines Corp filed Critical International Business Machines Corp
Publication of GB1306630A publication Critical patent/GB1306630A/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
    • G03G9/00—Developers
    • G03G9/08—Developers with toner particles
    • G03G9/10—Developers with toner particles characterised by carrier particles
    • G03G9/113—Developers with toner particles characterised by carrier particles having coatings applied thereto
    • G03G9/1132—Macromolecular components of coatings
    • G03G9/1133—Macromolecular components of coatings obtained by reactions only involving carbon-to-carbon unsaturated bonds
    • G03G9/1134—Macromolecular components of coatings obtained by reactions only involving carbon-to-carbon unsaturated bonds containing fluorine atoms
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G9/00—Developers
    • G03G9/08—Developers with toner particles
    • G03G9/10—Developers with toner particles characterised by carrier particles
    • G03G9/113—Developers with toner particles characterised by carrier particles having coatings applied thereto
    • G03G9/1132—Macromolecular components of coatings
    • G03G9/1135—Macromolecular components of coatings obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G9/00—Developers
    • G03G9/08—Developers with toner particles
    • G03G9/10—Developers with toner particles characterised by carrier particles
    • G03G9/113—Developers with toner particles characterised by carrier particles having coatings applied thereto
    • G03G9/1132—Macromolecular components of coatings
    • G03G9/1135—Macromolecular components of coatings obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
    • G03G9/1136—Macromolecular components of coatings obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds containing silicon atoms
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G9/00—Developers
    • G03G9/08—Developers with toner particles
    • G03G9/10—Developers with toner particles characterised by carrier particles
    • G03G9/113—Developers with toner particles characterised by carrier particles having coatings applied thereto
    • G03G9/1132—Macromolecular components of coatings
    • G03G9/1137—Macromolecular components of coatings being crosslinked

Abstract

1306630 Electro-photographic developer INTERNATIONAL BUSINESS MACHINES CORP 29 Dec 1971 [28 Jan 1971] 60298/71 Heading G2H A carrier (which in admixture with a toner acquires a relatively positive charge) comprises particles of core material having a heat-treated coating comprising a mixture of a fluoropolymer and a modifying agent which renders the fluoropolymer more triboelectrically positive. The fluoropolymer may be a fluorocarbon (e.g. a copolymer of tetrafluorethylene and hexafluoropropylene) or fluorosilicone polymer. The modifying agent may be an epoxy, urethane or methyl phenyl silicone resin. Coating of the core material may be by spraying in a cyclic fluidized bed. The coating may be 1-25 microns thick. The coating may be heated at up to 700‹F. for about 15 min. The core material may be sand or beads of glass or magnetic material and have a particle size of 50-1,000 microns. Toners are specified.
GB3029871*[A 1971-01-28 1971-12-29 Electrophotographic development mixtures Expired GB1306630A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US11075671A 1971-01-28 1971-01-28

Publications (1)

Publication Number Publication Date
GB1306630A true GB1306630A (en) 1973-02-14

Family

ID=22334771

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3029871*[A Expired GB1306630A (en) 1971-01-28 1971-12-29 Electrophotographic development mixtures

Country Status (8)

Country Link
US (1) US3778262A (en)
CA (1) CA964512A (en)
CH (1) CH576661A5 (en)
DE (1) DE2203622C3 (en)
ES (1) ES399004A1 (en)
GB (1) GB1306630A (en)
IT (1) IT940701B (en)
NL (1) NL168060C (en)

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3918968A (en) * 1971-01-28 1975-11-11 Ibm Electrophotographic process utilizing carrier particles coated with a fluoropolymer in development
US3947271A (en) * 1972-02-14 1976-03-30 International Business Machines Corporation Electrostatic imaging method using a polytetrafluoroethylene coated carrier particle
US4002570A (en) * 1973-12-26 1977-01-11 Xerox Corporation Electrophotographic developer with polyvinylidene fluoride additive
US3922381A (en) * 1974-06-14 1975-11-25 Addressorgrap Multigraph Corp Chemically treated carrier particles for use in electrophotographic process
US4297427A (en) * 1978-01-26 1981-10-27 Xerox Corporation Polyblend coated carrier materials
US4225660A (en) * 1979-01-08 1980-09-30 Pitney Bowes Inc. Treated toner carrier and method of making the same
US4265995A (en) * 1979-10-22 1981-05-05 Xerox Corporation Carrier core surface treatment
US4342824A (en) * 1980-05-27 1982-08-03 Imaging Systems Corporation Developer with coated carrier material and method of making
JPS5840557A (en) * 1981-09-03 1983-03-09 Canon Inc Electrophotographic developer
US4535047A (en) * 1983-04-04 1985-08-13 Allied Corporation Ferromagnetic amorphous metal carrier particles for electrophotographic toners
JPS6087349A (en) * 1983-10-19 1985-05-17 Canon Inc Toner coating method
US4971881A (en) * 1989-01-05 1990-11-20 Monsanto Company Toner composition comprising rosin modified styrene acrylic resin
US5102769A (en) * 1991-02-04 1992-04-07 Xerox Corporation Solution coated carrier particles
DE69231367T2 (en) * 1991-02-20 2001-02-01 Fuji Xerox Co Ltd Carriers for the development of electrostatic latent images and processes for their production
US5627001A (en) * 1995-10-05 1997-05-06 Nashua Corporation Coated carrier particle containing a charge control agent

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL146059B (en) * 1948-05-01 Keyes Fibre Co PROCEDURE FOR MANUFACTURING INTERCHANGEABLE FILTER UNITS FOR GAS FILTERS AND FILTER UNITS MADE IN ACCORDANCE WITH THIS PROCESS.
US2618551A (en) * 1948-10-20 1952-11-18 Haloid Co Developer for electrostatic images
US3093039A (en) * 1958-05-12 1963-06-11 Xerox Corp Apparatus for transferring powder images and method therefor
US3533835A (en) * 1966-10-11 1970-10-13 Xerox Corp Electrostatographic developer mixture
US3507686A (en) * 1967-06-23 1970-04-21 Xerox Corp Method of coating carrier beads
US3558492A (en) * 1969-06-11 1971-01-26 Du Pont Ferromagnetic chromium oxide recording members and compositions stabilized with tertiary amine-containing polymers

Also Published As

Publication number Publication date
ES399004A1 (en) 1974-11-01
CA964512A (en) 1975-03-18
NL168060B (en) 1981-09-16
US3778262A (en) 1973-12-11
NL7200842A (en) 1972-08-01
IT940701B (en) 1973-02-20
CH576661A5 (en) 1976-06-15
DE2203622B2 (en) 1975-02-20
DE2203622C3 (en) 1975-09-25
DE2203622A1 (en) 1972-08-10
NL168060C (en) 1982-02-16

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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