Printing apparatus with cooling of hammer printing coils

Details Printing apparatus with cooling of hammer printing coils Printing apparatus with cooling of hammer printing coils

1983-06-20

1984-03-27

Eickholt, E. H.

Printing

Selective or progressive

Bed and platen machines

400131, 4001572, 335300, 174 16R, 361384, B41J 300, H01F 500

Patent

active

044386923

ABSTRACT:
A printing apparatus including a plurality of drive coils for driving printing hammers arranged longitudinally in side-by-side relation at one side of a core of the U-shape. A first cooling fluid passageway is defined inside the core of the U-shape to allow a cooling fluid for cooling the drive coils to flow therethrough, and a second cooling fluid passageway is defined outside the core by a duct to allow the cooling fluid for cooling the drive coils to flow therethrough without escaping to the outside by diffusion. A current of cooling fluid is forcibly fed into these cooling fluid passageways by a fluid machine.

REFERENCES:
patent: 2547065 (1951-04-01), Wadhams
patent: 3086457 (1963-04-01), Antonucci
patent: 3123743 (1964-03-01), Perlmutter
patent: 3141999 (1964-07-01), Schneider
patent: 3230293 (1966-01-01), Turgeon
patent: 4014258 (1977-03-01), Wassermann
patent: 4033255 (1977-07-01), Kleist et al.
patent: 4044668 (1977-08-01), Barrus et al.
patent: 4158875 (1979-06-01), Tasima et al.
"Cooling Electrical Equipment", IBM Technical Disclosure Bulletin, vol. 20, No. 6, Nov. 1977, pp. 2428-2429.
"Cooling Apparatus", IBM Technical Disclosure Bulletin, vol. 13, No. 4, Sep. 1970, p. 959.
"Air Cooling Scheme", IBM Technical Disclosure Bulletin, vol. 16, No. 1, Jun. 1973, pp. 296-297.
"Push-Pull Mult-Flow System for Air-Cooled Modules", IBM, vol. 22, No. 2, Jul. 19, 1979, pp. 696-697.

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