JPS5624909A - Armanent magnet roll - Google Patents

Armanent magnet roll

Info

Publication number
JPS5624909A
JPS5624909A JP10061979A JP10061979A JPS5624909A JP S5624909 A JPS5624909 A JP S5624909A JP 10061979 A JP10061979 A JP 10061979A JP 10061979 A JP10061979 A JP 10061979A JP S5624909 A JPS5624909 A JP S5624909A
Authority
JP
Japan
Prior art keywords
axis
narrowered
slurry
permanent magnet
cut
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
JP10061979A
Other languages
Japanese (ja)
Inventor
Kazunori Tawara
Katsunobu Kiriyama
Tokuyuki Noda
Motoharu Shimizu
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 JP10061979A priority Critical patent/JPS5624909A/en
Publication of JPS5624909A publication Critical patent/JPS5624909A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F41/00—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties
    • H01F41/02—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets
    • H01F41/0253—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets for manufacturing permanent magnets

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Magnetic Brush Developing In Electrophotography (AREA)

Abstract

PURPOSE:To obtain a small-sized permanent magnet roll of high magnetic force by a method wherein a mixed medium and an additive are added, as occasion demands, to an oxide magnetic powder, an extrusion molding is performed while giving a vacant space between each magnetic pole of a narrowered width as it is approaching a center axis and then a sintering process is performed. CONSTITUTION:Slurry is made by adding about 2% or less of organic binder, to be used for improvement of moldability, to oxide magnetic powder and they are put into hopper. Then, after performing kneading and compressing processes, the slurry is cut by a shredder 6 and it is deaerated in a vacuum chamber 8 which has been made vacuous by a vacuum pump 7. Subsequently, an extruding process is performed through an extruding screw 9, a tapered barrel 10 and a mold 11, it is cut in a prescribed size and a drying and a sintering processes are performed. As a result, an approximately cylindrical permanent magnet substance 1 is formed and at this time, a vacant space 3, which has a narrowered width as it approaches an axis 2, is to be made between each magnetic pole S and N which will be formed around the axis 2. Thus, a roller with a high magnetic force, in spite of small size, can be obtained and it is suitably used for an electrophotography.
JP10061979A 1979-08-07 1979-08-07 Armanent magnet roll Pending JPS5624909A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP10061979A JPS5624909A (en) 1979-08-07 1979-08-07 Armanent magnet roll

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10061979A JPS5624909A (en) 1979-08-07 1979-08-07 Armanent magnet roll

Publications (1)

Publication Number Publication Date
JPS5624909A true JPS5624909A (en) 1981-03-10

Family

ID=14278848

Family Applications (1)

Application Number Title Priority Date Filing Date
JP10061979A Pending JPS5624909A (en) 1979-08-07 1979-08-07 Armanent magnet roll

Country Status (1)

Country Link
JP (1) JPS5624909A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63133816A (en) * 1986-11-20 1988-06-06 鐘淵化学工業株式会社 Magnet roll and manufacture of the same
JP4938191B2 (en) * 1999-11-25 2012-05-23 オウトクンプ オーユーイー Filter press filter plate

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63133816A (en) * 1986-11-20 1988-06-06 鐘淵化学工業株式会社 Magnet roll and manufacture of the same
JPH0682579B2 (en) * 1986-11-20 1994-10-19 鐘淵化学工業株式会社 Magnetoroll and manufacturing method thereof
JP4938191B2 (en) * 1999-11-25 2012-05-23 オウトクンプ オーユーイー Filter press filter plate

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