Microcomputer control of ribbon drive for printers

Details Microcomputer control of ribbon drive for printers Microcomputer control of ribbon drive for printers

1979-10-19

1982-02-02

Wright, Jr., Ernest T.

Typewriting machines

Including interposed inking device for record-medium

Ribbon-feeding mechanism

400124, 4002191, 400221, 400234, 4002362, 400248, 400249, 4006162, 400902, B41J 3314

Patent

active

043136834

ABSTRACT:
A microcomputer controls a ribbon drive assembly in a high speed wire matrix printer to eliminte ribbon slack, to insure proper ribbon positioning and to conduct diagnostics in conjunction with turning on the printer such as start-up time each day and after replacement of the ribbon with a new ribbon, the diagnostics checking to be sure that a ribbon is actually in the proper position, that it is threaded across the print line and also checking for proper operation of the ribbon drive, logic, and electronics. Tests are also made for proper ribbon drive during normal ribbon feeding operations.

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patent: 3291043 (1966-12-01), Bernard
patent: 3354822 (1967-11-01), Dollot
patent: 3496547 (1970-02-01), Gorrill et al.
patent: 3730082 (1973-05-01), Perry
patent: 3902585 (1975-09-01), Mogtader
patent: 3966036 (1976-06-01), Bernardis et al.
patent: 3974906 (1976-08-01), Lee et al.
patent: 4000804 (1977-01-01), Zaltieri
patent: 4025830 (1977-05-01), Delaporte
patent: 4091913 (1978-05-01), Ku et al.
patent: 4177731 (1979-12-01), Kleist et al.

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