Printing – Selective or progressive – Printing members
Patent
1974-07-18
1976-08-03
Burr, Edgar S.
Printing
Selective or progressive
Printing members
197182, 101111, B41J 132
Patent
active
039722813
ABSTRACT:
An adjustable facet print mechanism includes a plurality of print wheels in one embodiment each meshing constantly on an internal periphery with a pinion. Annular members are also provided and each meshes with a corresponding pinion of one of the print wheels and each carries read-out indicia corresponding to the print-facets of the print wheels. Drive to the print wheels to adjust their operative facets is effected through a splined shaft which engages a selected annular member when a notch in a cam engages the periphery of the annular member. A read-out arrangement includes an arm of transparent material with a prismatic face lying opposite the indicia selected.
Other embodiments make use of slightly flexible print wheels to effect engagement with a splined shaft and one embodiment uses print bands in place of wheels. In the latter embodiment selection of a print band for adjustment is effected by an interrupted pinion carried on fingers integral with an adjusting knob. These fingers interdigitate with further fingers and relative axial sliding movement enables the interrupted pinion to engage selectively one of a plurality of annular members around which the respective print bands are trained.
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Burr Edgar S.
Coven Edward M.
Norprint Limited
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