Speed controlled printer

Details Speed controlled printer Speed controlled printer

1981-11-10

1984-01-24

Crowder, Clifford D.

Typewriting machines

Carriage or carriage-moving or movement-regulating mechanism

Carriage-retarder mechanism

400 88, 400120, 400121, 400314, 4003172, 400336, B41J 1902, B41J 336

Patent

active

044273142

ABSTRACT:
A manually operated dot printer designed for use in a pocket-sized calculator or a small-sized electronic device includes a printing head which is manually driven across the dot printer paper in one direction to store energy in springs. The springs return the printing head in steps intermittently while the printing head effects printing on the printing paper. The springs also feed the printing paper. While the printing head is manually moved, the printing elements are maintained out of contact with the printing paper. During return movement of the printing head, the printing elements are in contact with, or nearly in contact with, the printing paper for printing operations. The actual printing operations of the printing head are performed with electrical control using elements of low power consumption.

REFERENCES:
patent: 744424 (1903-11-01), Steiger
patent: 2905302 (1959-09-01), Hickerson
patent: 2917151 (1959-12-01), Lambert
patent: 3767020 (1973-10-01), Rowe
patent: 3826915 (1974-07-01), Giolitti et al.
patent: 3881587 (1975-05-01), Okabe
patent: 4134696 (1979-01-01), Hanakata et al.
patent: 4198170 (1980-04-01), Decker
patent: 4310256 (1982-07-01), Inoue

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