Print ribbon handler

Details Print ribbon handler Print ribbon handler

1977-04-04

1978-08-29

Wright, Jr., Ernest T.

Typewriting machines

Including interposed inking device for record-medium

Means auxiliary to ribbon mechanism

400213, B41J 3504

Patent

active

041100506

ABSTRACT:
A print ribbon handler for an impact type printer maintains the ribbon at a constant slant angle from the horizontal. A ribbon guide surface having threaded grooves is provided to guide the ribbon up and down at a constant vertical rate of change with respect to the horizontal/printhead travel back and forth across the printing span to keep the ribbon at the constant slant angle.

REFERENCES:
patent: 1031541 (1912-07-01), Duncan
patent: 1662220 (1928-03-01), Umstead
patent: 2168364 (1939-08-01), Schaefer
patent: 2202958 (1940-06-01), McFarland
patent: 2672092 (1954-03-01), Beattie
patent: 3987883 (1976-10-01), Darwin et al.
patent: 4011934 (1977-03-01), Ploby et al.
IBM Technical Disclosure Bulletin, "Helically Grooved Ribbon Guide," Bakken, vol. 13, No. 8, Jan. 1971, p. 2229.
IBM Technical Disclosure Bulletin, "Angled Ribbon Guide," Giallo et al., vol. 19, No. 10, Mar. 1977, pp. 3817-3818.

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