JPS57164771A - Magnet roll for magnetic brush - Google Patents

Magnet roll for magnetic brush

Info

Publication number
JPS57164771A
JPS57164771A JP4933781A JP4933781A JPS57164771A JP S57164771 A JPS57164771 A JP S57164771A JP 4933781 A JP4933781 A JP 4933781A JP 4933781 A JP4933781 A JP 4933781A JP S57164771 A JPS57164771 A JP S57164771A
Authority
JP
Japan
Prior art keywords
magnetic
roll
magnet
flux density
dimensional accuracy
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
JP4933781A
Other languages
Japanese (ja)
Inventor
Yusuke Ogita
Yoshikazu Okamoto
Yoshio Inoue
Kiyoshi Miyashita
Yasuo Koseki
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.)
Fujifilm Business Innovation Corp
Original Assignee
Fuji Xerox 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 Fuji Xerox Co Ltd filed Critical Fuji Xerox Co Ltd
Priority to JP4933781A priority Critical patent/JPS57164771A/en
Publication of JPS57164771A publication Critical patent/JPS57164771A/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
    • G03G15/00—Apparatus for electrographic processes using a charge pattern
    • G03G15/06—Apparatus for electrographic processes using a charge pattern for developing
    • G03G15/08—Apparatus for electrographic processes using a charge pattern for developing using a solid developer, e.g. powder developer
    • G03G15/09—Apparatus for electrographic processes using a charge pattern for developing using a solid developer, e.g. powder developer using magnetic brush
    • G03G15/0921—Details concerning the magnetic brush roller structure, e.g. magnet configuration

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Magnetic Brush Developing In Electrophotography (AREA)

Abstract

PURPOSE:To improve magnetic flux density with magnetically homogeneous quality and good dimensional accuracy by orienting the easy magnetization axes of the magnetic material of a forming roll in the circumferential direction outer than the notched part of the roll with a magnetic roll of a horseshoe shape in section which is formed into one body. CONSTITUTION:The compsn. constituted of the magnetic material particles of a large magnetic anisotropic constant such as ferrite powder contg. at least one kind of Ba, Sr, Pb, etc., or rare earth magnet powder or the like and a high polymer compd. consisting of a highly fluid thermoplastic resin such as PE, PP or the like are uniformly kneaded, after which the mixture is molded while the easy magnetization axes of the ferrite particles are oriented in the same direction as the lines of magnetic induction by the magnetic force of the powerful magnetic field generated by an electromagnet or the like, whereby the roll molding of a horseshoe shape is obtained. A shaft 1 is mounted to the magnet roll 9 obtained in this way, and is magnetized to necessary patterns. Thereby, the magnet for development of magnetically homogeneous quality, good dimensional accuracy and high magnetic flux density is mass produced.
JP4933781A 1981-04-03 1981-04-03 Magnet roll for magnetic brush Pending JPS57164771A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4933781A JPS57164771A (en) 1981-04-03 1981-04-03 Magnet roll for magnetic brush

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4933781A JPS57164771A (en) 1981-04-03 1981-04-03 Magnet roll for magnetic brush

Publications (1)

Publication Number Publication Date
JPS57164771A true JPS57164771A (en) 1982-10-09

Family

ID=12828173

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4933781A Pending JPS57164771A (en) 1981-04-03 1981-04-03 Magnet roll for magnetic brush

Country Status (1)

Country Link
JP (1) JPS57164771A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04156571A (en) * 1990-10-19 1992-05-29 Sagami Kagaku Kinzoku:Kk Magnetic roller and manufacture thereof

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04156571A (en) * 1990-10-19 1992-05-29 Sagami Kagaku Kinzoku:Kk Magnetic roller and manufacture thereof

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