JPS6463976A - Binary system electrophotographic color developer - Google Patents

Binary system electrophotographic color developer

Info

Publication number
JPS6463976A
JPS6463976A JP62220785A JP22078587A JPS6463976A JP S6463976 A JPS6463976 A JP S6463976A JP 62220785 A JP62220785 A JP 62220785A JP 22078587 A JP22078587 A JP 22078587A JP S6463976 A JPS6463976 A JP S6463976A
Authority
JP
Japan
Prior art keywords
developer
toner
carrier
white
picture image
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
JP62220785A
Other languages
Japanese (ja)
Inventor
Yasuo Asahina
Nobuhiro Nakayama
Mitsuo Aoki
Hiroyuki Fushimi
Kayo Makita
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.)
Ricoh Co Ltd
Original Assignee
Ricoh 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 Ricoh Co Ltd filed Critical Ricoh Co Ltd
Priority to JP62220785A priority Critical patent/JPS6463976A/en
Publication of JPS6463976A publication Critical patent/JPS6463976A/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
    • G03G9/113—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
    • G03G9/097—Plasticisers; Charge controlling agents

Landscapes

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

Abstract

PURPOSE:To prevent color stain, to stabilize the degree of electrical charge of a developer, to enhance picture image density, and to improve the unformity of solid part by adopting silicone resin for a covering resin of a carrier and a white electroconductive material for fine electroconductive powder. CONSTITUTION:A silicone resin is adopted for a covering resin of a carrier and a white electroconductive material is adopted for fine electroconductive powder. A developer is prepd. by kneading the white electroconductive particles in a toner, and/or by adding the white electroconductive particles to the toner and carrier at the same time of mixing the toner with the carrier. A picture image having high picture image density, satisfactory uniformity of solid part, providing conscientiously printed matters to a copy without causing edge effect is obtd. by adding fine powder of the white electroconductive material to a developer and controlling the quality of electric charge by controlling the resistance of a toner and/or a developer appropriately.
JP62220785A 1987-09-03 1987-09-03 Binary system electrophotographic color developer Pending JPS6463976A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62220785A JPS6463976A (en) 1987-09-03 1987-09-03 Binary system electrophotographic color developer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62220785A JPS6463976A (en) 1987-09-03 1987-09-03 Binary system electrophotographic color developer

Publications (1)

Publication Number Publication Date
JPS6463976A true JPS6463976A (en) 1989-03-09

Family

ID=16756534

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62220785A Pending JPS6463976A (en) 1987-09-03 1987-09-03 Binary system electrophotographic color developer

Country Status (1)

Country Link
JP (1) JPS6463976A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010217441A (en) * 2009-03-16 2010-09-30 Ricoh Co Ltd Electrostatic charge image developing developer, developing device, image forming apparatus, image forming method and process cartridge

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010217441A (en) * 2009-03-16 2010-09-30 Ricoh Co Ltd Electrostatic charge image developing developer, developing device, image forming apparatus, image forming method and process cartridge

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