Electronic typewriter having improved paper and ink feed mechani

Details Electronic typewriter having improved paper and ink feed mechani Electronic typewriter having improved paper and ink feed mechani

1990-03-16

1991-01-22

Wiecking, David A.

Typewriting machines

Having power-driven operator for plural functions

Usable selectively

400229, 400568, 4006971, B41J 2334

Patent

active

049866770

ABSTRACT:
There is disclosed an output apparatus which prints and outputs onto an ink ribbon in an electronic typewriter or the like. One motor is commonly used for print paper feed, ribbon feed, and ribbon lift up/down operations. The ribbon feed mechanism is controlled by the heteromorphic or noncircular rotary cam having grooves of different kinds of radii. The ink ribbon feed operation and the correction ribbon feed and lift up/down operations are also performed by the rotary cam. With this apparatus, the ink and correction ribbons can be efficiently used and the operation timing of the carriage can be accurately controlled.

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IBM Technical Disclosure Bulletin, "Variable Lift and Feed Increment Ribbon/Correction Mechanism", Greenlief et al., vol. 26, No. 3B, Aug. 1983, pp. 1580-1582.

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