Magnet roll

Details Magnet roll Magnet roll

1989-08-02

1991-07-09

Harris, George

Electricity: magnetically operated switches, magnets, and electr

Magnets and electromagnets

Magnet structure or material

118657, 29125, H01F 702

Patent

active

050309374

ABSTRACT:
A magnet roll for an electrophotographic device includes a magnet carrier assembly constituted by a plurality of identical cylindrical segments of injection molded plastic material. The segments are coaxially arranged and longitudinally aligned in an end-to-end relationahip on a spindlelike metal rod constituting the magnet roll axis of rotation. The segmented carrier assembly provides a plurality of longitudinally extending channels circumferentially spaced about the carrier assembly. The bottom of each channel has along its length a central groove that functions as a locator for an extruded, flexible magnet strip that mounts within the channel, each magnet strip having along the length of its underside a centered tongue that fits into the locator groove of its respective channel. Such a magnet roll provides for highly accurate positioning of the outer working surfaces of the magnet strips.

REFERENCES:
patent: 3721189 (1973-03-01), Bray
patent: 4517719 (1985-05-01), Okumura
patent: 4558294 (1985-12-01), Yamashita
patent: 4587699 (1986-05-01), Kadomatsu
patent: 4638281 (1987-01-01), Baermann

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