JPS6433559A - Two-component developer for electrophotography - Google Patents

Two-component developer for electrophotography

Info

Publication number
JPS6433559A
JPS6433559A JP62188947A JP18894787A JPS6433559A JP S6433559 A JPS6433559 A JP S6433559A JP 62188947 A JP62188947 A JP 62188947A JP 18894787 A JP18894787 A JP 18894787A JP S6433559 A JPS6433559 A JP S6433559A
Authority
JP
Japan
Prior art keywords
toner
fatty acid
metallic salt
developer
styrene
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
JP62188947A
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 JP62188947A priority Critical patent/JPS6433559A/en
Publication of JPS6433559A publication Critical patent/JPS6433559A/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
    • G03G9/1138—Non-macromolecular organic components 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
    • G03G9/097—Plasticisers; Charge controlling agents
    • G03G9/09783—Organo-metallic compounds
    • G03G9/09791—Metallic soaps of higher carboxylic acids

Abstract

PURPOSE:To obtain stable Q/M of a toner by incorporating a metallic salt of fatty acid into the coating layer of a carrier and a positively polarizing agent into the toner. CONSTITUTION:This developer is composed of a carrier contg. a metallic salt of fatty acid in the coating layer and a toner contg. a styrene-based polymer as a resin binder and a positively polarizing agent. The styrene-based polymer may be polystyrene and the metallic salt of fatty acid may be cadmium stearate. Thus, the Q/M of the toner can be stabilized, and when the developer is used, a clear image having high image density can stably be obtd. with high transfer efficiency.
JP62188947A 1987-07-30 1987-07-30 Two-component developer for electrophotography Pending JPS6433559A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62188947A JPS6433559A (en) 1987-07-30 1987-07-30 Two-component developer for electrophotography

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62188947A JPS6433559A (en) 1987-07-30 1987-07-30 Two-component developer for electrophotography

Publications (1)

Publication Number Publication Date
JPS6433559A true JPS6433559A (en) 1989-02-03

Family

ID=16232699

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62188947A Pending JPS6433559A (en) 1987-07-30 1987-07-30 Two-component developer for electrophotography

Country Status (1)

Country Link
JP (1) JPS6433559A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11156934B2 (en) 2020-03-11 2021-10-26 Fujifilm Business Innovation Corp. Carrier for developing electrostatic charge image, electrostatic charge image developer, and image forming apparatus

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11156934B2 (en) 2020-03-11 2021-10-26 Fujifilm Business Innovation Corp. Carrier for developing electrostatic charge image, electrostatic charge image developer, and image forming apparatus

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