Typewriting machines – Including type-set-assemblage mounted on carrier and... – Imprint by pivoting of type-head-carrier and type-head...
Patent
1992-06-02
1993-01-19
Wiecking, David A.
Typewriting machines
Including type-set-assemblage mounted on carrier and...
Imprint by pivoting of type-head-carrier and type-head...
4401572, 101 9302, B41J 942, B41J 948
Patent
active
051802350
ABSTRACT:
An impact printer has a platen, a carriage movable in parallelism to the platen, a hammer carried on the carriage, driving means for protruding the hammer toward the platen, detecting means for detecting the speed of the hammer striking against the platen and returned therefrom, and control means for changing over the speed at which the hammer is protruded toward the platen in conformity with the result of the detection of the detecting means.
REFERENCES:
patent: 1977531 (1934-10-01), Sperry
patent: 4064799 (1977-12-01), Babler
patent: 4407193 (1983-10-01), Hall
patent: 4440079 (1984-04-01), Dayger
patent: 4547087 (1985-10-01), Heider
patent: 4558965 (1985-12-01), Ueda
Canon Kabushiki Kaisha
Kelley Steven S.
Wiecking David A.
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