G - Physics – 06 – F
Patent
G - Physics
06
F
101/93
G06F 3/00 (2006.01) B41J 2/285 (2006.01) B41J 9/38 (2006.01) B41J 9/46 (2006.01)
Patent
CA 1138120
18.10.78 l PHN.8949 "ABSTRACT": "Printer, provided with an impact device comprising a transducer" A printer comprising an impact device which is provided with an impact member which is electro- mechanically driven and whose position and speed are measured (calculated) by means of a transducer and calculation means in order to obtain a speed-and- position-signal. The speed signal is compared with a reference signal in a comparator. The signal output of the comparator is connected to a signal input of an electrical actuation device for driving the impact member, the actuation. of the drive being terminated only after a stop signal has appeared on the signal output of the comparator. The speed-find-position-signal determines the amplitude of the actuation current pulse in order to achieve a constant impact force (constant speed of the impact member) and a constant flying time, although position and speed of the impact member at the successive moments of starting actuation may differ.
315188
Blom Nico
Wor Jan T.
N.v. Philips Gloeilampenfabrieken
Van Steinburg C.e.
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