High-speed printer with self-adjusting cable preload mechanism

Details High-speed printer with self-adjusting cable preload mechanism High-speed printer with self-adjusting cable preload mechanism

1978-07-10

1980-05-20

Wright, Jr., Ernest T.

Typewriting machines

Carriage or carriage-moving or movement-regulating mechanism

Carriage-feed mechanism

400320, 4001442, 400322, B41J 1900

Patent

active

042036801

ABSTRACT:
A high-speed printer in which the carriage carrying a print wheel is coupled to a servo controlled driving motor having intermittent motion. The motor drives a helically grooved pulley, which has attached to it left and right cable segments. The other ends of the cable segments are attached to the movable carriage. A cable preload spring and friction pulley snubber combination maintains cable tension relatively constant. The snubber provides a tight cable system during normal carriage acceleration and deceleration. The preload spring allows for tension correction when the cable suffers from long-term stretching due to constructional stretching, that is, the normal tendency of wound cables to stretch due to seating of individual wires in the strand.

REFERENCES:
patent: 3872960 (1975-03-01), Gabor
patent: 3954163 (1976-05-01), Gabor
patent: 4116568 (1978-09-01), Suzuki et al.

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