Ribbon drive for low cost quiet impact printer

Details Ribbon drive for low cost quiet impact printer Ribbon drive for low cost quiet impact printer

1990-04-18

1991-04-30

Eickholt, Eugene H.

Typewriting machines

Having typewriter-controlled reciprocable electromagnetic...

400155, 400225, 400322, B41J 2334

Patent

active

050113097

ABSTRACT:
A serial impact printer comprising a support frame, a platen mounted for rotation upon the support frame, a print element having character imprinting portions disposed thereon, a print element selector for moving the print element to position a selected character imprinting portion at a printing position, a marking ribbon and a lift-off ribbon. A hammer for moving a selected character imprinting portion for deforming the platen with a printing force, and means for moving the hammer toward and away from the platen. Each ribbon is selectively positionable between the print element and the platen. A carriage mounted for reciprocating movement generally parallel to the platen supports thereon the print element, the print element selector, the marking and lift-off ribbons, means for positioning the ribbons, means for advancing the marking ribbon, the hammer, and the means for moving the hammer. A single D.C. motor comprises the means for moving the hammer, the means for positioning the ribbons, and the means for advancing the marking ribbon.

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