Electricity: magnetically operated switches – magnets – and electr – Magnets and electromagnets – Magnet structure or material
Patent
1985-04-01
1987-01-20
Harris, George
Electricity: magnetically operated switches, magnets, and electr
Magnets and electromagnets
Magnet structure or material
335306, 118657, 29607, H01F 300
Patent
active
046382810
ABSTRACT:
A magnetic roll for electro-photographic copy machines is provided with a carrier to which strip-shaped permanent magnetic components are fastened in an axial direction. Recesses are provided in the carrier having a cross-section larger than the magnetic components so as to permit selective radial, tangential and pivotal movement for universal positioning of the components within the recess. The components are selectively oriented to provide a predetermined induction value as measured at a predetermined distance outwardly of the carrier or with respect to adjacent poles as determined by discretely located Hall probes. The permanent magnetic components are fixed in the prescribed orientation by an injection moldable plastic material such as a plastic foam.
REFERENCES:
patent: 3208296 (1965-09-01), Baermann
patent: 3641969 (1972-02-01), Hakanson
patent: 3663850 (1972-05-01), Phelon
patent: 4558294 (1985-12-01), Yamashita
patent: 4580121 (1986-04-01), Ogawa
Harris George
Max Baermann, G.m.b.H.
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