JPS6438759A - Spherical iron powder carrier for developer and production thereof - Google Patents

Spherical iron powder carrier for developer and production thereof

Info

Publication number
JPS6438759A
JPS6438759A JP62196091A JP19609187A JPS6438759A JP S6438759 A JPS6438759 A JP S6438759A JP 62196091 A JP62196091 A JP 62196091A JP 19609187 A JP19609187 A JP 19609187A JP S6438759 A JPS6438759 A JP S6438759A
Authority
JP
Japan
Prior art keywords
carrier
film
developer
particle size
iron powder
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
JP62196091A
Other languages
Japanese (ja)
Inventor
Toshiaki Takahashi
Tsutomu Ishita
Kiyoshi Kimura
Ryoji Nishitani
Shuichi Machi
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.)
Nippon Steel Corp
Tetsugen Corp
Original Assignee
Nippon Steel Corp
Tetsugen Corp
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 Nippon Steel Corp, Tetsugen Corp filed Critical Nippon Steel Corp
Priority to JP62196091A priority Critical patent/JPS6438759A/en
Publication of JPS6438759A publication Critical patent/JPS6438759A/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
    • G03G9/1075—Structural characteristics of the carrier particles, e.g. shape or crystallographic structure
    • 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
    • G03G9/1087—Specified elemental magnetic metal or alloy, e.g. alnico comprising iron, nickel, cobalt, and aluminum, or permalloy comprising iron and nickel

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Metallurgy (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Developing Agents For Electrophotography (AREA)

Abstract

PURPOSE:To form a spherical iron powder carrier for a developer having superior properties at a low cost by classifying iron dusts produced in a stage for manufacturing pig iron, steel, etc. CONSTITUTION:This spherical iron powder carrier for a developer is nearly spherical iron particles obtd. by sieving the dusts produced in a stage for manufacturing steel. Most of the particles are within the particle size range of 44-500mum and the wt.% (R) of integrated plus mesh is represented by an equality R=100.exp[-(D/De)<n>] (where D is particle size, De is 65-430mum characterization factor of particle size and n is 7.4-23.3 equality number). The performance of the iron particles as the carrier is further improved by coating each surface with a surface modifying film. This film may be a triiron tetroxide film, a resin film or a film formed by chemical treatment. The carrier is comparable or superior to a conventional expensive carrier.
JP62196091A 1987-08-04 1987-08-04 Spherical iron powder carrier for developer and production thereof Pending JPS6438759A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62196091A JPS6438759A (en) 1987-08-04 1987-08-04 Spherical iron powder carrier for developer and production thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62196091A JPS6438759A (en) 1987-08-04 1987-08-04 Spherical iron powder carrier for developer and production thereof

Publications (1)

Publication Number Publication Date
JPS6438759A true JPS6438759A (en) 1989-02-09

Family

ID=16352062

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62196091A Pending JPS6438759A (en) 1987-08-04 1987-08-04 Spherical iron powder carrier for developer and production thereof

Country Status (1)

Country Link
JP (1) JPS6438759A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2018109704A (en) * 2017-01-04 2018-07-12 パウダーテック株式会社 Magnetic core material for electrophotographic developer, carrier for electrophotographic developer, and developer
JP2018109703A (en) * 2017-01-04 2018-07-12 パウダーテック株式会社 Magnetic core material for electrophotographic developer, carrier for electrophotographic developer, and developer
JP2019040098A (en) * 2017-08-25 2019-03-14 パウダーテック株式会社 Magnetic core material for electrophotographic developer, carrier for electrophotographic developer and developer

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2018109704A (en) * 2017-01-04 2018-07-12 パウダーテック株式会社 Magnetic core material for electrophotographic developer, carrier for electrophotographic developer, and developer
JP2018109703A (en) * 2017-01-04 2018-07-12 パウダーテック株式会社 Magnetic core material for electrophotographic developer, carrier for electrophotographic developer, and developer
US10754271B2 (en) 2017-01-04 2020-08-25 Powdertech Co., Ltd. Magnetic core material for electrophotographic developer, carrier for electrophotographic developer, and developer
US10996576B2 (en) 2017-01-04 2021-05-04 Powdertech Co., Ltd. Magnetic core material for electrophotographic developer, carrier for electrophotographic developer, and developer
JP2019040098A (en) * 2017-08-25 2019-03-14 パウダーテック株式会社 Magnetic core material for electrophotographic developer, carrier for electrophotographic developer and developer
US11099495B2 (en) 2017-08-25 2021-08-24 Powdertech Co., Ltd. Magnetic core material for electrophotographic developer, carrier for electrophotographic developer, developer, method for producing magnetic core material for electrophotographic developer, method for producing carrier for electrophotographic developer, and method for producing developer

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