Magnetic cylinder with axial extending permanent bar magnets

Electricity: magnetically operated switches – magnets – and electr – Magnets and electromagnets – Magnet structure or material

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1013891, H01F 702, B41F 2702

Patent

active

056275056

ABSTRACT:
A magnetic cylinder for holding printing plates and the like having a drum of non-magnetic material with recesses on the drum surface containing a series of uninterrupted elongated permanent ceramic magnets extending substantially the length of the cylinder in an axial direction with pole pieces between adjacent magnets.

REFERENCES:
patent: 3610583 (1971-10-01), Ostrom et al.
patent: 3721189 (1973-03-01), Bray
patent: 3824926 (1974-07-01), Fukuyama
patent: 4114532 (1978-09-01), Arzoumanian
patent: 4625928 (1986-12-01), Peekna
patent: 4676161 (1987-06-01), Peekna
patent: 4852490 (1989-08-01), McEachern
patent: 5219050 (1993-06-01), Kubomiya

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