Electronic typewriter

Details Electronic typewriter Electronic typewriter

1992-02-25

1993-05-04

Eickholt, Eugene H.

Typewriting machines

Having power-driven operator for plural functions

400568, 400569, B41J 2334

Patent

active

052077969

ABSTRACT:
An electronic typewriter (11) has a line spacing device (29) for rotating a platen roller (16) and a transport device (28) for moving a printing carriage (19) in both directions. The line spacing and transport devices are driven from a single motor (32) via an intermediate gear (40) mounted on a shift member (35). The shift member (35) is displaceable between two operative positions for connecting a driveshaft (33) to the transport device (28) or to the line spacing device (29). A servomechanism (36) which is motorized by the shaft (33) displaces the shift member (35) between the two positions by means of a shift electromagnet (81) which actuates a lever (79) to lock the gear (40) by means of teeth (88) on a slide member (43). Positioning means (44) hold the shift member (35) in each of the two operative positions, and an electronic control means (22) controls the motor (32 ) and the electromagnet (81). The system is of low cost, and is simple, functional and reliable.

REFERENCES:
patent: 4449835 (1984-08-01), Arai
patent: 4637744 (1987-01-01), Valle et al.
patent: 4697941 (1987-10-01), Takenoya
patent: 4787761 (1988-11-01), Tezuka et al.
patent: 5106216 (1992-04-01), Kim

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