GB1497732A - Carrier particles suitable for electrostatographic developers - Google Patents

Carrier particles suitable for electrostatographic developers

Info

Publication number
GB1497732A
GB1497732A GB18406/75A GB1840675A GB1497732A GB 1497732 A GB1497732 A GB 1497732A GB 18406/75 A GB18406/75 A GB 18406/75A GB 1840675 A GB1840675 A GB 1840675A GB 1497732 A GB1497732 A GB 1497732A
Authority
GB
United Kingdom
Prior art keywords
carrier particles
particles
classified
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
GB18406/75A
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 US05/474,623 external-priority patent/US4040969A/en
Priority claimed from US05/474,489 external-priority patent/US4126454A/en
Application filed by Xerox Corp filed Critical Xerox Corp
Publication of GB1497732A publication Critical patent/GB1497732A/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
    • G03G9/107—Developers with toner particles characterised by carrier particles having magnetic components
    • G03G9/1075—Structural characteristics of the carrier particles, e.g. shape or crystallographic structure
    • 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
    • G03G9/107—Developers with toner particles characterised by carrier particles having magnetic components
    • G03G9/108—Ferrite carrier, e.g. magnetite
    • G03G9/1085—Ferrite carrier, e.g. magnetite with non-ferrous metal oxide, e.g. MgO-Fe2O3
    • 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
    • G03G9/1138—Non-macromolecular organic components of coatings

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Developing Agents For Electrophotography (AREA)
  • Dry Development In Electrophotography (AREA)

Abstract

1497732 Developer carrier particles XEROX CORP 2 May 1975 [30 May 1974 (2)] 18406/75 Heading G2H Carrier particles, suitable for use with toner particles to form an electrostatographic developer, are selected to have a specific surface area of at least 150 cm<SP>2</SP>/gram and preferably have a particle size volume distribution geometric standard deviation (defined in the Specification) of less than 1À3 and an average particle size diameter of less than 100 microns. Any known carrier material may be classified to produce carrier particles, which may be coated or uncoated, of the required size. In the Examples, nickel-zinc ferrite particles are coated with a known plastics coating material, are classified by sieving and then mixed with known toner particles.
GB18406/75A 1974-05-30 1975-05-02 Carrier particles suitable for electrostatographic developers Expired GB1497732A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US05/474,623 US4040969A (en) 1974-05-30 1974-05-30 High surface area carrier
US05/474,489 US4126454A (en) 1974-05-30 1974-05-30 Imaging process utilizing classified high surface area carrier materials

Publications (1)

Publication Number Publication Date
GB1497732A true GB1497732A (en) 1978-01-12

Family

ID=27044473

Family Applications (1)

Application Number Title Priority Date Filing Date
GB18406/75A Expired GB1497732A (en) 1974-05-30 1975-05-02 Carrier particles suitable for electrostatographic developers

Country Status (10)

Country Link
JP (1) JPS5913023B2 (en)
BR (1) BR7503081A (en)
CA (1) CA1041344A (en)
DE (1) DE2520214C2 (en)
ES (1) ES438084A1 (en)
FR (1) FR2273308B1 (en)
GB (1) GB1497732A (en)
IT (1) IT1038561B (en)
NL (1) NL7506484A (en)
SE (1) SE406653B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110856440A (en) * 2018-06-21 2020-02-28 法国圣戈班玻璃厂 Method for producing a composite glass pane with a polarization-selective coating

Families Citing this family (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4214160A (en) * 1976-03-04 1980-07-22 Finnigan Corporation Mass spectrometer system and method for control of ion energy for different masses
US4297427A (en) * 1978-01-26 1981-10-27 Xerox Corporation Polyblend coated carrier materials
CA1147192A (en) * 1978-04-06 1983-05-31 John L. Webb Electrostatographic developer including toner of diameter between 3 and 15 microns and carrier of diameter between 15 and 65 microns
DE2840717C3 (en) * 1978-09-19 1981-12-17 Addressograph-Multigraph Corp., Los Angeles, Calif. Carrier for the development of electrostatic images
DE3043040A1 (en) * 1979-11-14 1981-05-21 Canon K.K., Tokyo METHOD FOR DEVELOPING ELECTRIC LATEN IMAGES, AND A DEVICE FOR CARRYING OUT THIS METHOD
JPS5684402A (en) * 1979-12-14 1981-07-09 Nippon Teppun Kk Iron powder as core materials for resin-coated carrier
JPS5840557A (en) * 1981-09-03 1983-03-09 Canon Inc Electrophotographic developer
JPS58123553A (en) * 1982-01-19 1983-07-22 Hitachi Metals Ltd Electrophotographic developing carrier
JPS5938755A (en) * 1982-08-30 1984-03-02 Konishiroku Photo Ind Co Ltd Electrostatic charge image developing carrier
JPS60258559A (en) * 1984-06-06 1985-12-20 Ricoh Co Ltd Electrostatic latent image developer
JPH0619593B2 (en) * 1984-07-30 1994-03-16 三田工業株式会社 Two-component magnetic developer
JPH0680465B2 (en) * 1984-11-27 1994-10-12 三田工業株式会社 Magnetic brush development method
JPS63277413A (en) * 1987-05-06 1988-11-15 Kyoshin Eng:Kk Sealing device for covered cord penetrating partition wall
US5512402A (en) * 1993-05-20 1996-04-30 Canon Kabushiki Kaisha Carrier for electrophotography, two-component type developer, and image forming method
EP0650099B1 (en) * 1993-10-15 2000-08-23 Canon Kabushiki Kaisha Carrier for electrophotography, two-component type developer, and image forming method
CA2151988C (en) * 1994-06-22 2001-12-18 Kenji Okado Carrier for electrophotography, two component-type developer and image forming method
US6316156B1 (en) 1994-06-22 2001-11-13 Canon Kabushiki Kaisha Carrier for electrophotography, two component type developer, and image forming method
DE60120556T2 (en) 2000-05-23 2007-06-06 Ricoh Co., Ltd. Two-component developer, a container filled with this developer, and image forming apparatus
GB201103854D0 (en) 2011-03-07 2011-04-20 Micromass Ltd Dynamic resolution correction of quadrupole mass analyser

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE636477A (en) * 1962-09-06 1900-01-01

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110856440A (en) * 2018-06-21 2020-02-28 法国圣戈班玻璃厂 Method for producing a composite glass pane with a polarization-selective coating

Also Published As

Publication number Publication date
JPS513238A (en) 1976-01-12
DE2520214C2 (en) 1984-01-05
IT1038561B (en) 1979-11-30
SE406653B (en) 1979-02-19
CA1041344A (en) 1978-10-31
BR7503081A (en) 1976-04-20
FR2273308A1 (en) 1975-12-26
DE2520214A1 (en) 1975-12-11
AU8149475A (en) 1976-11-25
SE7506043L (en) 1975-12-01
JPS5913023B2 (en) 1984-03-27
ES438084A1 (en) 1977-06-16
FR2273308B1 (en) 1978-09-22
NL7506484A (en) 1975-12-02

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
746 Register noted 'licences of right' (sect. 46/1977)
PE20 Patent expired after termination of 20 years

Effective date: 19950501