GB1342748A - - Google Patents

Info

Publication number
GB1342748A
GB1342748A GB2056271A GB2056271A GB1342748A GB 1342748 A GB1342748 A GB 1342748A GB 2056271 A GB2056271 A GB 2056271A GB 2056271 A GB2056271 A GB 2056271A GB 1342748 A GB1342748 A GB 1342748A
Authority
GB
United Kingdom
Prior art keywords
particles
glow discharge
polymerizable material
vinyl
coating
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
GB2056271A
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 filed Critical
Publication of GB1342748A publication Critical patent/GB1342748A/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
    • 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
    • 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

1342748 Coating particles by polymerization EASTMAN KODAK CO 19 April 1971 [3 Feb 1970] 20562/71 Heading C3P [Also in Division G2] Particles are coated by subjecting them in a fluidized state to a glow discharge treatment in the presence of a gaseous polymerizable material at 0À3-5 mm.Hg pressure. The particles are preferably of a magnetic material for use as carrier materials, mixed with toner particles, for developing electrostatic images in electrophotography. Suitable such materials are iron, cobalt, nickel, their alloys, ferrites, iron dispersed in a resin binder or a non-magnetic particle overcoated with ferromagnetic material, and preferably is of 30-1200 microns diameter. The ,polymerizable material is tetrafluoroethylene, trifluorochloroethylene, hexafluoropropylene, octafluorobutene-2, vinyl or vinylidene fluoride; hexafluoroacetone, acrylonitrile, styrene, ethylene, vinyl chloride, vinyl ferrocene, carbon tetrachloride, hexafluoroethane, methyl methacrylate, divinylbenzene, benzene, naphthalene or anthracene. The particles are preferably located between two parallel plate electrodes on a support which can be vibrated and a sufficient electrical potential is applied to the plates to form a glow discharge. The amount of polymer formed is such as to provide a coating 0À03- 0-2% by weight of the core and to give the particles a resistance greater than 10<SP>7</SP> ohms. The particles may first be subjected to the glow discharge in an inert atmosphere which is then replaced by the polymerizable material.
GB2056271A 1970-02-03 1971-04-19 Expired GB1342748A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US841670A 1970-02-03 1970-02-03

Publications (1)

Publication Number Publication Date
GB1342748A true GB1342748A (en) 1974-01-03

Family

ID=21731476

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2056271A Expired GB1342748A (en) 1970-02-03 1971-04-19

Country Status (6)

Country Link
US (1) US3669885A (en)
AU (1) AU2489471A (en)
BE (1) BE762324A (en)
CA (1) CA936401A (en)
FR (1) FR2080485A5 (en)
GB (1) GB1342748A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2805152A1 (en) * 1977-02-08 1978-08-10 Thomson Csf DIELECTRIC COMPOSING AN ORGANIC POLYMERISATE AND PROCESS FOR ITS MANUFACTURING
GB2252559A (en) * 1991-02-09 1992-08-12 Tioxide Group Services Ltd Method of coating inorganic particles

Families Citing this family (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5525482B2 (en) * 1972-02-24 1980-07-07
US3898170A (en) * 1972-03-21 1975-08-05 Eastman Kodak Co Electrographic carrier vehicle and developer composition
US3945823A (en) * 1972-11-21 1976-03-23 Xerox Corporation Electrostatographic reversal development with developer comprising poly(p-xylene)-coated carrier particles
CA1003262A (en) * 1972-11-21 1977-01-11 Xerox Corporation Developer material
JPS5146552B2 (en) * 1972-12-04 1976-12-09
US4042517A (en) * 1972-12-18 1977-08-16 Xerox Corporation Electrostatographic developer mixture containing a thermoset acrylic resin coated carrier
US3965022A (en) * 1973-06-29 1976-06-22 Minnesota Mining And Manufacturing Company Pressure-fixable developing powder
US3898171A (en) * 1973-12-03 1975-08-05 Addressograph Multigraph Electroscopic powder with sharp melting point containing sucrose benzoate and a thermoplastic resin
US4206065A (en) * 1978-10-30 1980-06-03 Xerox Corporation Electrostatographic developer compositions using terpolymer coated carrier
SU1085995A1 (en) * 1979-09-25 1984-04-15 Предприятие П/Я В-8584 Process for surface modification of rubber articles
US4464417A (en) * 1983-02-02 1984-08-07 The United States Of America As Represented By The Department Of Energy Method for minimizing contaminant particle effects in gas-insulated electrical apparatus
JPS60164754A (en) * 1984-02-06 1985-08-27 Hitachi Chem Co Ltd Toner for developing electrostatic charge image
US4824753A (en) * 1986-04-30 1989-04-25 Minolta Camera Kabushiki Kaisha Carrier coated with plasma-polymerized film and apparatus for preparing same
JPH0690542B2 (en) * 1986-07-10 1994-11-14 ミノルタ株式会社 Binder type carrier
JPH0690541B2 (en) * 1986-07-10 1994-11-14 ミノルタ株式会社 Binder type carrier
US4822708A (en) * 1986-08-01 1989-04-18 Minolta Camera Kabushiki Kaisha Carrier for use in developing device of electrostatic latent image and production thereof
JP2797294B2 (en) * 1987-01-29 1998-09-17 ミノルタ株式会社 Binder type carrier
JP2643136B2 (en) * 1987-02-20 1997-08-20 ミノルタ株式会社 Carrier for electrophotography
JPH01309074A (en) * 1988-06-07 1989-12-13 Minolta Camera Co Ltd Developer composition
US5141834A (en) * 1988-10-03 1992-08-25 Daikin Industries, Ltd. Carriers for developing electrostatic images
US5777537A (en) * 1996-05-08 1998-07-07 Espey Mfg. & Electronics Corp. Quiet magnetic structures such as power transformers and reactors
US20040151617A1 (en) * 2003-01-31 2004-08-05 Zanakis Michael F. Methods and apparatus for air sterilization

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3247014A (en) * 1963-05-29 1966-04-19 Battelle Development Corp Method of coating solid particles
US3326177A (en) * 1963-09-12 1967-06-20 Pennsalt Chemicals Corp Metal vapor coating apparatus
US3440085A (en) * 1963-12-16 1969-04-22 Nuclear Materials & Equipment Method of and apparatus for producing coated particles
US3387991A (en) * 1964-10-13 1968-06-11 Rexall Drug Chemical Glow discharge polymerization coating of polyolefin surfaces to render them receptive to adhesives, inks, and the like
US3392139A (en) * 1965-05-03 1968-07-09 Monsanto Graphic Syst Electroscopic powder containing titania-calcium sulfate pigment
US3461092A (en) * 1965-08-23 1969-08-12 Owens Illinois Inc Solid particulate printing ink composition and process for producing same
NL6615946A (en) * 1965-12-14 1967-06-15
US3447950A (en) * 1966-02-03 1969-06-03 Valley Metallurg Processing Production of encapsulated powders
US3526533A (en) * 1966-08-10 1970-09-01 Xerox Corp Coated carrier particles
US3466191A (en) * 1966-11-07 1969-09-09 Us Army Method of vacuum deposition of piezoelectric films of cadmium sulfide
US3507686A (en) * 1967-06-23 1970-04-21 Xerox Corp Method of coating carrier beads

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2805152A1 (en) * 1977-02-08 1978-08-10 Thomson Csf DIELECTRIC COMPOSING AN ORGANIC POLYMERISATE AND PROCESS FOR ITS MANUFACTURING
GB2252559A (en) * 1991-02-09 1992-08-12 Tioxide Group Services Ltd Method of coating inorganic particles
GB2252559B (en) * 1991-02-09 1994-10-12 Tioxide Group Services Ltd Coating process

Also Published As

Publication number Publication date
US3669885A (en) 1972-06-13
FR2080485A5 (en) 1971-11-12
CA936401A (en) 1973-11-06
BE762324A (en) 1971-07-01
AU2489471A (en) 1972-08-03

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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
PCNP Patent ceased through non-payment of renewal fee