Printing – Selective or progressive – Bed and platen machines
Patent
1981-12-30
1983-08-09
Coven, Edward M.
Printing
Selective or progressive
Bed and platen machines
101 9348, 336 61, 335300, 361388, B41J 938
Patent
active
043972349
ABSTRACT:
A heat exchange system for an electromagnetically operated print hammer of a print hammer bank provides internal and external heat transfer for the operating windings. A non-magnetic metal bobbin of the heat exchange system provides conductive transfer of heat from the interior of the operating winding to the magnetic core. Flat parallel plates of magnetic material are attached to the sides of the operating winding for external heat transfer and magnetic flux shielding. The plates may have multiple laminations having different saturation and permeability characteristics.
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patent: 4081776 (1978-03-01), Hisamoto et al.
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Lee Ho C.
Rickenbach David H.
Wolfert Gerhard A.
Zable Jack L.
Coven Edward M.
Gasper John S.
International Business Machines - Corporation
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