Print tip contact sensor for quiet impact printer

Typewriting machines – Type-bar-action mechanism or type-face on type-bar or... – With added-motion mechanism for type-bar near print-point

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Details

4001442, 4001572, 400166, 400385, 4003881, 400689, 400703, 101 9319, 101 9329, 101 9348, B41J 936, B41J 130

Patent

active

046783555

ABSTRACT:
An impacting element for an impact printer having a platen, selectable character elements and means for driving the impacting element to impart a printing force to a selected character element, to drive it against said platen for a contact period, the impacting element including a sensor thereon for generating a signal indicative of the initiation of the contact period.

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patent: 4429342 (1984-01-01), Heider
patent: 4525086 (1985-06-01), Field et al.
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"Print Hammer Position Sensor"; W. D. Freeman et al; IBM Tech. Disc. Bull.; vol. 18, No. 12, p. 4072; May 1976.
"Type Bar Velocity Transducer"; H. W. Simpson; IBM Tech. Disc. Bull.; vol. 2, No. 1, p. 37; Jun. 1959.
S. A. Oleksa; Transducer for Measuring Print Impact Force; IBM Tech. Disc. Bull.; vol. 22, No. 11, pp. 5019-5020; Apr. 1980.
IBM Technical Disclosure Bulletin, "Print Hammer Impact Force Detection and Correction", by Matthews, vol. 21, No. 12, May. '79, p. 4763.
IBM Technical Disclosure Bulletin, "Multi-Function Impact Detector for Impact Printer", by Hindermeyer, vol. 27, No. 6, Nov. '84, p. 3345.

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