JPS5796357A - Carrier for electrophotographic developer - Google Patents

Carrier for electrophotographic developer

Info

Publication number
JPS5796357A
JPS5796357A JP55172007A JP17200780A JPS5796357A JP S5796357 A JPS5796357 A JP S5796357A JP 55172007 A JP55172007 A JP 55172007A JP 17200780 A JP17200780 A JP 17200780A JP S5796357 A JPS5796357 A JP S5796357A
Authority
JP
Japan
Prior art keywords
carrier
elastomer
toners
impingement
surface tension
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.)
Granted
Application number
JP55172007A
Other languages
Japanese (ja)
Other versions
JPS6360383B2 (en
Inventor
Naoyuki Ushiyama
Satoru Inoue
Kimitoshi Yamaguchi
Katsuomi Kobayashi
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 JP55172007A priority Critical patent/JPS5796357A/en
Publication of JPS5796357A publication Critical patent/JPS5796357A/en
Publication of JPS6360383B2 publication Critical patent/JPS6360383B2/ja
Granted 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
    • G03G9/108—Ferrite carrier, e.g. magnetite

Landscapes

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

Abstract

PURPOSE:To provide a titled carrier of high abrasion resistance and a long life causing no sticking of toners on carrier surfaces by mixing elastomer having surface tension below specific values and magnetic powder, and granulating the mixture. CONSTITUTION:A soln. of elastomer of >=25dyne/cm surface tension selected from silicone elastomer, fluorosilicone elastomer, fluororubber, etc., and magnetic powder such as ferrite powder are mixed, and the mixture is granulated by a method such as spray drying, whereby the intended carrier for electrophotographic developer is obtained. The elastomer of >=24dyne/cm surface tension has the effect of peventing sticking of toners on carrier surface during long-time reiterative use, further absorbing the impact owing to the impingement of the carriers against each other and the impingement of the carriers and the toners, reducing the weight of the carriers per se, and reducing impingement energy. As a result, the abrasion, damage, etc. of the carrier surfaces are prevented.
JP55172007A 1980-12-08 1980-12-08 Carrier for electrophotographic developer Granted JPS5796357A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP55172007A JPS5796357A (en) 1980-12-08 1980-12-08 Carrier for electrophotographic developer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP55172007A JPS5796357A (en) 1980-12-08 1980-12-08 Carrier for electrophotographic developer

Publications (2)

Publication Number Publication Date
JPS5796357A true JPS5796357A (en) 1982-06-15
JPS6360383B2 JPS6360383B2 (en) 1988-11-24

Family

ID=15933783

Family Applications (1)

Application Number Title Priority Date Filing Date
JP55172007A Granted JPS5796357A (en) 1980-12-08 1980-12-08 Carrier for electrophotographic developer

Country Status (1)

Country Link
JP (1) JPS5796357A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61204643A (en) * 1985-03-08 1986-09-10 Ricoh Co Ltd Carrier for electrostatic latent image developer

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS51107281A (en) * 1975-02-24 1976-09-22 Xerox Corp
JPS5468246A (en) * 1977-11-10 1979-06-01 Ricoh Co Ltd Electrostatographic developer

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS51107281A (en) * 1975-02-24 1976-09-22 Xerox Corp
JPS5468246A (en) * 1977-11-10 1979-06-01 Ricoh Co Ltd Electrostatographic developer

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61204643A (en) * 1985-03-08 1986-09-10 Ricoh Co Ltd Carrier for electrostatic latent image developer

Also Published As

Publication number Publication date
JPS6360383B2 (en) 1988-11-24

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