Quiet impact printer

Details Quiet impact printer Quiet impact printer

1985-07-02

1987-05-26

Pieprz, William

Typewriting machines

Including type-set-assemblage mounted on carrier and...

Imprint by movement of record-medium against type-face

4001442, 400166, 400387, 4003914, 400392, 101 9333, 101 9348, B41J 936, B41J 130

Patent

active

046681124

ABSTRACT:
An improved serial impact printer designed to substantially reduce impact noise generation during the printing operation. The printer includes a print tip relatively movable with respect to a deformable platen, with a print element, a marking ribbon and an image receptor sheet interposed between the print tip and the platen which are urged together during a controlled contact period. Movement is subject to control by a kinetic drive mechanism which applies a first force for moving the print tip relative to the platen, prior to the initiation of the contact period, for closing the gap therebetween and then applies a second force for accelerating the print tip relative to the platen, subsequent to the initiation of the contact period, for causing the print tip to deform the platen.

REFERENCES:
patent: 1110346 (1914-09-01), Reisser
patent: 1615694 (1927-01-01), Going
patent: 1998555 (1935-04-01), Norton
patent: 2114659 (1938-04-01), Salzberger
patent: 2267915 (1941-12-01), Henry
patent: 2625100 (1953-01-01), Williams et al.
patent: 4302117 (1981-11-01), Tomita
patent: 4347786 (1982-09-01), Sweat, Jr. et al.
patent: 4547087 (1985-10-01), Heider et al.

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