Developing roll for use in electrostatic developing apparatus em

Details Developing roll for use in electrostatic developing apparatus em Developing roll for use in electrostatic developing apparatus em

1979-05-10

1981-05-12

Kee Chi, James

Metal working

Means to assemble or disassemble

Puller or pusher means, contained force multiplying operator

118658, 355 3DD, B21B 1302, G03G 1509

Patent

active

042663288

ABSTRACT:
A core assembly for magnetizing a columnar permanent magnet, especially a columnar ceramic permanent magnet and a developing roll magnetized by the core assembly, adapted for use in an electrostatic developing apparatus of magnetic-brush developing type. The magnetizing iron core assembly has a specific arrangement of magnetic poles and magnetizing coil windings for providing a specific pattern of magnetic flux distribution which would provide the most efficient development.

REFERENCES:
patent: 3402698 (1967-05-01), Kojima et al.
patent: 3455276 (1967-05-01), Anderson
patent: 3828730 (1972-05-01), Yamashita et al.
patent: 3952701 (1974-11-01), Yamashita et al.
patent: 3988816 (1976-11-01), Tada
patent: 4091765 (1978-05-01), Lowthorp

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