Typewriting machines – Including type-set-assemblage mounted on carrier and... – Imprint by movement of record-medium against type-face
Patent
1994-10-21
1996-05-21
Burr, Edgar S.
Typewriting machines
Including type-set-assemblage mounted on carrier and...
Imprint by movement of record-medium against type-face
400166, B41J 900, B41J 952
Patent
active
055183271
ABSTRACT:
The wire motion detecting apparatus according to the present invention comprises a velocity detecting portion for detecting the velocity of a printing wire, a comparator output signal generating portion for generating a first comparator output signal CMP and a second comparator output signal CMPR corresponding to the detected velocity, a first counter 101 for measuring a motion time T.sub.S for the printing wire, a second counter 102 for measuring a print time T.sub.P for the printing wire, and a third counter 103 for measuring a return time T.sub.R for the printing wire. When the signal level of the first comparator output signal CMP is repeatedly changed between a high level and a low level, the first counter 101 stops counting. Even if an armature is rebounded, the first counter 101 does not resume counting.
REFERENCES:
patent: 5039238 (1991-08-01), Kikuchi
patent: 5201876 (1993-04-01), Stengel
patent: 5312193 (1994-05-01), Kringe
patent: 5330277 (1994-07-01), Kasai
patent: 5439302 (1995-08-01), Andou et al.
Burr Edgar S.
Kelley Steven S.
OKI Electric Industry Co., Ltd.
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