JPS55155371A - Magnet roller - Google Patents

Magnet roller

Info

Publication number
JPS55155371A
JPS55155371A JP6237579A JP6237579A JPS55155371A JP S55155371 A JPS55155371 A JP S55155371A JP 6237579 A JP6237579 A JP 6237579A JP 6237579 A JP6237579 A JP 6237579A JP S55155371 A JPS55155371 A JP S55155371A
Authority
JP
Japan
Prior art keywords
magnetic
magnets
pole
poles
shaft
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
JP6237579A
Other languages
Japanese (ja)
Inventor
Katsunobu Yamamoto
Kazunori Tawara
Motoharu Shimizu
Tokuyuki Noda
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.)
Proterial Ltd
Original Assignee
Hitachi Metals 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 Hitachi Metals Ltd filed Critical Hitachi Metals Ltd
Priority to JP6237579A priority Critical patent/JPS55155371A/en
Publication of JPS55155371A publication Critical patent/JPS55155371A/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 reduce the weight of the title roller and to enhance its magnetic characteristic by using anisotropic ferrite magnets provided with a groove extending in the shaft direction between or downward between each magnetic pole. CONSTITUTION:Cylindrical anisotropic ferrite magnets 1 are fixed to shaft 2, nonmagnetic sleeve 3 made of aluminum, stainless steel, or the like is fitted around the circumference of magnets 1, and especially groove 4 extending in the shaft direction between the N poles and S poles of magnets 1 are formd to reduce the weight of magnet 1 markedly. When the axes of easy magnetization 5 are oriented in the direction of the arrows, the direction of magnetic flux from the S pole to the N pole becomes such as shown in the short dash line. As a result, formation of the grooves do not lower the magnetic force of the ferrite magnets and a light magnetic roller superior in magnetic characteristic can be obtained.
JP6237579A 1979-05-21 1979-05-21 Magnet roller Pending JPS55155371A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6237579A JPS55155371A (en) 1979-05-21 1979-05-21 Magnet roller

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6237579A JPS55155371A (en) 1979-05-21 1979-05-21 Magnet roller

Publications (1)

Publication Number Publication Date
JPS55155371A true JPS55155371A (en) 1980-12-03

Family

ID=13198300

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6237579A Pending JPS55155371A (en) 1979-05-21 1979-05-21 Magnet roller

Country Status (1)

Country Link
JP (1) JPS55155371A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6132079A (en) * 1984-09-17 1986-02-14 Tdk Corp Magnet roll

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6132079A (en) * 1984-09-17 1986-02-14 Tdk Corp Magnet roll

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