Low inertia impact printing means

Details Low inertia impact printing means Low inertia impact printing means

1976-07-26

1977-04-26

Burr, Edgar S.

Textiles: fiber preparation

101 9319, B41J 124

Patent

active

040196151

ABSTRACT:
In a print head, a print wheel comprising the combination of a disk, a plurality of permanently magnetized printing members bearing characters thereon, and electromagnet imparting translation to the printing members by magnetic interaction, and also providing capability of additional mechanical impact upon the printing members. The print wheel has the capability of providing means to create pulses for obtaining character selection. The wheel may be made of resilient material, preferably non-magnetic. This wheel is generally mounted on a shaft of a stepping motor, the start and stop action of the motor and character selection being controlled by logic circuits well known in the art. The motor and electromagnet are generally mounted in a movable carriage as used in a computer terminal typewriter.

REFERENCES:
patent: 3640369 (1972-02-01), Rolph
patent: 3842960 (1974-10-01), Gerry
IBM Tech. Disc. Bulletin, J. H. Meier et al., Type Wheel Assembly, vol. 17, No. 5, Oct. 1974, p. 1316.
IBM Tech. Disc. Bulletin, W. D. Thorne, Hammerless Printer, vol. 17, No. 11, Apr. 1975, pp. 3381-3382.

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