GB1421603A - Coated carrier particles for use in electrophotographic processes and their preparation - Google Patents

Coated carrier particles for use in electrophotographic processes and their preparation

Info

Publication number
GB1421603A
GB1421603A GB276173A GB276173A GB1421603A GB 1421603 A GB1421603 A GB 1421603A GB 276173 A GB276173 A GB 276173A GB 276173 A GB276173 A GB 276173A GB 1421603 A GB1421603 A GB 1421603A
Authority
GB
United Kingdom
Prior art keywords
coating
cores
preparation
carrier particles
coated carrier
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
GB276173A
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 GB1421603A publication Critical patent/GB1421603A/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
    • G03G9/1131—Coating methods; Structure of coatings
    • 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
    • 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

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Developing Agents For Electrophotography (AREA)

Abstract

1421603 Coated magnetic cores INTERNATIONAL BUSINESS MACHINES CORP 19 Jan 1973 [14 Feb 1972 (2)] 2761/ 73 Heading B2E [Also in Division G2] Ferromagnetic solid cores having a median diameter of 50 to 1000 microns bear a first coating from 0.1 to 5.0 microns thick of polytetrafluorethylene and chromic and phosphoric acids and a second outermost coating from 0.1 to 10 microns thick of sintered polytetrafluorethylene. The cores may be steel beads. Both coatings may be applied in fluidised beds, into which the component materials are introduced with volatile carrier media. After the second coating step th eparticles are heat-treated to sinter the outer coating.
GB276173A 1972-02-14 1973-01-19 Coated carrier particles for use in electrophotographic processes and their preparation Expired GB1421603A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US22576172A 1972-02-14 1972-02-14
US22601572A 1972-02-14 1972-02-14

Publications (1)

Publication Number Publication Date
GB1421603A true GB1421603A (en) 1976-01-21

Family

ID=26919886

Family Applications (1)

Application Number Title Priority Date Filing Date
GB276173A Expired GB1421603A (en) 1972-02-14 1973-01-19 Coated carrier particles for use in electrophotographic processes and their preparation

Country Status (1)

Country Link
GB (1) GB1421603A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0034488A1 (en) * 1980-02-15 1981-08-26 Xerox Corporation Carrier particle for electrostatographic developer mixture, developer mixture, and imaging process using the mixture
US4925762A (en) * 1987-08-17 1990-05-15 Basf Aktiengesellschaft Carrier for reprography and production of this carrier
WO2001036107A1 (en) * 1999-11-16 2001-05-25 Chisso Corporation Particle coating device, throttle plate for jet tower and particle coating method

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0034488A1 (en) * 1980-02-15 1981-08-26 Xerox Corporation Carrier particle for electrostatographic developer mixture, developer mixture, and imaging process using the mixture
US4925762A (en) * 1987-08-17 1990-05-15 Basf Aktiengesellschaft Carrier for reprography and production of this carrier
WO2001036107A1 (en) * 1999-11-16 2001-05-25 Chisso Corporation Particle coating device, throttle plate for jet tower and particle coating method

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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