Print hammer assembly with multi-location impacts

Details Print hammer assembly with multi-location impacts Print hammer assembly with multi-location impacts

1979-11-05

1982-05-04

Coven, Edward M.

Printing

Selective or progressive

Bed and platen machines

101 9348, 4001573, 4001442, B41J 930

Patent

active

043276393

ABSTRACT:
A print hammer assembly is disclosed comprising a support structure having a plunger at a first location thereon, and means for movably mounting the support structure with its plunger adjacent an electromagnetic actuator capable of being selectively energized such that, when the actuator is energized, the resultant magnetic field acting upon the plunger will cause the plunger and thus the support structure to travel along predefined paths and predetermined speeds. A hammer element is coupled to the support structure at a second location thereon, and means coupled to the hammer element causes the hammer element to impact an adjacent platen or interposed print element against an adjacent platen more than once during travel of the pole piece along its predefined path. The means for causing includes means for altering the location of maximum impact force of the hammer element following initial impact thereof against the platen or the interposed print element against the platen.

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