[go: up one dir, main page]

JPS6446767A - Electrophotographic carrier - Google Patents

Electrophotographic carrier

Info

Publication number
JPS6446767A
JPS6446767A JP62203258A JP20325887A JPS6446767A JP S6446767 A JPS6446767 A JP S6446767A JP 62203258 A JP62203258 A JP 62203258A JP 20325887 A JP20325887 A JP 20325887A JP S6446767 A JPS6446767 A JP S6446767A
Authority
JP
Japan
Prior art keywords
carrier
image
acid
treating
magnetic
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.)
Pending
Application number
JP62203258A
Other languages
Japanese (ja)
Inventor
Junji Otani
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.)
Minolta Co Ltd
Original Assignee
Minolta Co Ltd
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 Minolta Co Ltd filed Critical Minolta Co Ltd
Priority to JP62203258A priority Critical patent/JPS6446767A/en
Publication of JPS6446767A publication Critical patent/JPS6446767A/en
Pending 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
    • G03G9/1088—Binder-type carrier

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Developing Agents For Electrophotography (AREA)

Abstract

PURPOSE:To form a superior image by treating a binder type carrier with acid or the like to remove a magnetic powder disclosed on the surface of the carrier and maintaining high electric resistivity even under high humidity. CONSTITUTION:The magnetic carrier is produced by sufficiently mixing the resin to be used as the binder and a magnetic material soluble in acid, for example, with a mixer, pulverizing the mixture, melting and kneading it with an extrusion kneader, cooling the obtained product, finely pulverizing and classifying it to obtain particles having a prescribed particle diameter of 20-100mum, and finally, treating with the acid to remove the magnetic powder present on the surfaces of the particles, thus permitting the obtained carrier to have high resistivity even under high humidity, and not to attach to a photosensitive body and to an image to be developed, and an image free from image defects to be obtained.
JP62203258A 1987-08-14 1987-08-14 Electrophotographic carrier Pending JPS6446767A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62203258A JPS6446767A (en) 1987-08-14 1987-08-14 Electrophotographic carrier

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62203258A JPS6446767A (en) 1987-08-14 1987-08-14 Electrophotographic carrier

Publications (1)

Publication Number Publication Date
JPS6446767A true JPS6446767A (en) 1989-02-21

Family

ID=16471048

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62203258A Pending JPS6446767A (en) 1987-08-14 1987-08-14 Electrophotographic carrier

Country Status (1)

Country Link
JP (1) JPS6446767A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0412352A1 (en) * 1989-08-07 1991-02-13 Eastman Kodak Company Method of preconditioning carrier particles for use in electrographic developers
JP2014066981A (en) * 2012-09-27 2014-04-17 Kyocera Document Solutions Inc Carrier and two-component developer

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0412352A1 (en) * 1989-08-07 1991-02-13 Eastman Kodak Company Method of preconditioning carrier particles for use in electrographic developers
JP2014066981A (en) * 2012-09-27 2014-04-17 Kyocera Document Solutions Inc Carrier and two-component developer

Similar Documents

Publication Publication Date Title
GB1478382A (en) Pressure-fixable developing powder
JPS6470764A (en) Electrophotographic toner
JPS5466134A (en) Magnetic brush development method
ES8105489A1 (en) Process for preparing coated carrier particles for electrostatographic developers.
JPS5526518A (en) Magnetic toner
ES8202504A1 (en) Method for producing mixtures of thermoplastic synthetic materials and mineral or organic charge materials,apparatus for the implementation of the method and material produced thereby
JPS5528032A (en) Electrostatic transfer type magnetic toner and production thereof
JPS6446767A (en) Electrophotographic carrier
JPS5468246A (en) Electrostatographic developer
JPS5796780A (en) Abrasive
JPS5670556A (en) Production of magnetic particle for electrophotographic developer
JPS55155363A (en) Carrier for dry developer
DE69525620D1 (en) METHOD FOR PRODUCING MEL-GRANULATED SUCRAL FATE PREPARATION
JPS54118250A (en) Magnetic toner and production of the same
JPS6491141A (en) Electrostatic image developing toner
JPS55583A (en) Insulation type magnetic toner
GB1419504A (en) Electrophotographic toner composition
JPS5331793A (en) Preparation of particle-containing polyester
JPS6420561A (en) Carrier for development
JPS6491143A (en) Electrostatic image developing toner
JPS5499636A (en) Production of pressure fixing toner for electrostatic charge image developing
JPS54121744A (en) Dry type developing process in electrophotography
JPS6220226B2 (en)
JPS5681853A (en) Manufacture of toner
JPS5695246A (en) Manufacture of toner particle