Printing – Bed-and-platen machines – Web
Patent
1978-01-05
1980-06-17
Pieprz, William
Printing
Bed-and-platen machines
Web
101288, 101297, 400457, B41J 500
Patent
active
042078164
ABSTRACT:
A constant printing pressure mechanism for a label printing machine: in one embodiment, a pressure applying roller is attached to the free ends of the yokes or printing levers that support the printing head; a resilient pressure receiving member which is pivotally supported on the machine frame and is abutted by the pressure roller; when the hand lever is squeezed, the pressure roller is pressed to the pressure receiving member; when the force of the pressure roller both pivots the receiving member a permitted maximum distance and overcomes the compressive stress in the resilient pressure receiving member and deflects the member, then the printing stroke is effected; in another embodiment, the pressure applying roller is on the frame and the resilient pressure receiving means is on the hand lever; the pressure receiving means comprises: a supporting member attached to a hand lever; a pressure controlling member which is pivotally secured to the hand lever; a pressure receiving piece having a cam surface on the front side thereof and being pivotally secured to the pressure controlling member; and a spring member which is interposed between the supporting member and the pressure controlling member.
REFERENCES:
patent: 1064674 (1913-06-01), Ursbruck
patent: 3055630 (1962-09-01), Becker
patent: 3197011 (1965-07-01), Kuramochi
patent: 3362326 (1968-01-01), Delpo et al.
patent: 3729080 (1973-04-01), Mueller
patent: 3779428 (1973-12-01), Banman
patent: 3789874 (1974-02-01), Hills
patent: 3902952 (1975-09-01), Penalnna
patent: 3911817 (1975-10-01), Becker et al.
patent: 4072105 (1978-02-01), Becker et al.
Kabushiki Kaisha Sato Kenkyusho
Pieprz William
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