Process of producing roll-shaped magnet

Details Process of producing roll-shaped magnet Process of producing roll-shaped magnet

1980-03-07

1982-04-27

Massie, Jerome W.

Adhesive bonding and miscellaneous chemical manufacture

Methods

Surface bonding and/or assembly therefor

29609, 156222, 156 22, 1562724, 264259, 264295, 264DIG58, 335302, H01F 302

Patent

active

043269087

ABSTRACT:
A process for producing roll-shaped magnets which may be used in electrophotographic copying machines or the like. At least two types of composite magnet sheets of different magnetic characteristics, each having a magnetic orientation in the thickness direction, are superposed to form a laminated body. A plurality of wedge-shaped indentations are formed in one side of the laminated body. The laminated body is then wound around a shaft so that its surface having the indentations constitutes the inner peripheral surface. A magnetization is then effected. This process conveniently permits the full magnetization of the laminated body to ensure a high quality and superior characteristic of the products, as well as a high productivity. during the mass production of such magnets.

REFERENCES:
patent: 3127461 (1964-03-01), Blume, Jr.
patent: 3359152 (1967-12-01), Blume
patent: 3837959 (1974-09-01), Bishop
patent: 3903228 (1975-09-01), Riedl et al.
patent: 4057606 (1977-11-01), Kobayashi et al.
patent: 4185262 (1980-01-01), Watanabe et al.

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