JPS647046A - Carrier for dry binary component type developing agent - Google Patents

Carrier for dry binary component type developing agent

Info

Publication number
JPS647046A
JPS647046A JP62162976A JP16297687A JPS647046A JP S647046 A JPS647046 A JP S647046A JP 62162976 A JP62162976 A JP 62162976A JP 16297687 A JP16297687 A JP 16297687A JP S647046 A JPS647046 A JP S647046A
Authority
JP
Japan
Prior art keywords
carrier
substance
electroconductive
coating layer
developing agent
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
JP62162976A
Other languages
Japanese (ja)
Inventor
Yasuo Asahina
Nobuhiro Nakayama
Hiroyuki Fushimi
Yasutaka Iwamoto
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 JP62162976A priority Critical patent/JPS647046A/en
Publication of JPS647046A publication Critical patent/JPS647046A/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
    • G03G9/1139—Inorganic components of coatings

Landscapes

  • Chemical & Material Sciences (AREA)
  • Inorganic Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Developing Agents For Electrophotography (AREA)

Abstract

PURPOSE:To enable the use of a developing agent for a long period without generating the spent of a toner, even if an electroconductive material is exposed on the surface of the titled carrier, by processing previously a fine particle of the electroconductive material with a substance having low surface energy, followed by dispersing the obtd. particle in a carrier coating solution to form a coating layer. CONSTITUTION:The coating layer (a carrier coating layer) composed of a resin contg. the fine particle of the electroconductive fine material which is previously surface-treated with the substance having the low energy, is formed on the surface of a carrier core material. The electroconductive fine particle usable for the titled carrier. is composed of a metal, a metal oxide, a sulfide, a carbon, a graphite or a conductive high polymer, etc., which has a particle size of about 1mmu-1mu. And, the substance having the low surface energy is exemplified by an org. acid or a silane coupler which has a fluorocarbon group, etc. Thus, the developer has a long shelf life, and an image having the good quality for the long period, can be formed without generating the spent of the toner.
JP62162976A 1987-06-30 1987-06-30 Carrier for dry binary component type developing agent Pending JPS647046A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62162976A JPS647046A (en) 1987-06-30 1987-06-30 Carrier for dry binary component type developing agent

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62162976A JPS647046A (en) 1987-06-30 1987-06-30 Carrier for dry binary component type developing agent

Publications (1)

Publication Number Publication Date
JPS647046A true JPS647046A (en) 1989-01-11

Family

ID=15764859

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62162976A Pending JPS647046A (en) 1987-06-30 1987-06-30 Carrier for dry binary component type developing agent

Country Status (1)

Country Link
JP (1) JPS647046A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0800118A1 (en) * 1996-04-01 1997-10-08 Fuji Xerox Co., Ltd. Carrier for developer of electrostatic latent image, method for making said carrier, developer of electrostatic latent image, method for forming image and apparatus for forming image
JP2010097206A (en) * 2008-09-17 2010-04-30 Ricoh Co Ltd Carrier for developing electrostatic latent image, two-component developer, supplemental developer, process cartridge, and image forming method
JP2011145648A (en) * 2009-12-17 2011-07-28 Ricoh Co Ltd Carrier for electrostatic latent image developer, two-component developer, container containing developer, image forming method, and process cartridge

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0800118A1 (en) * 1996-04-01 1997-10-08 Fuji Xerox Co., Ltd. Carrier for developer of electrostatic latent image, method for making said carrier, developer of electrostatic latent image, method for forming image and apparatus for forming image
US5849448A (en) * 1996-04-01 1998-12-15 Fuji Xerox Co., Ltd. Carrier for developer of electrostatic latent image, method for making said carrier
JP2010097206A (en) * 2008-09-17 2010-04-30 Ricoh Co Ltd Carrier for developing electrostatic latent image, two-component developer, supplemental developer, process cartridge, and image forming method
JP2011145648A (en) * 2009-12-17 2011-07-28 Ricoh Co Ltd Carrier for electrostatic latent image developer, two-component developer, container containing developer, image forming method, and process cartridge

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