Method for adaptively using a print ribbon in an impact printer

Details Method for adaptively using a print ribbon in an impact printer Method for adaptively using a print ribbon in an impact printer

1983-08-05

1985-07-23

Sewell, Paul T.

Typewriting machines

Including interposed inking device for record-medium

Ribbon-feeding mechanism

400197, 400225, 4002404, 400249, B41J 3336, B41J 3356

Patent

active

045306125

ABSTRACT:
Rather than repeatedly using the entire length of a multi-color print ribbon in an impact printer until the reaching of a lower quality threshold requires replacement of the ribbon, this invention causes only a subsection of limited length of the ribbon to be used until the lower quality threshold of any one of the color tracks of this subsection is reached, after which the ribbon is advanced to enable use of a fresh subsection.
The quality status of the currently used subsection may be monitored by counting the number of impacts on each individual color track and comparing that number with a predetermined, stored value, or by shining light through the ribbon and optically comparing the passing light with a preset value. The method is flexible enough to permit manual advance of the ribbon to a fresh subsection in case a printing job requires highest possible quality.

REFERENCES:
patent: 2569145 (1951-09-01), Berger
patent: 4037708 (1977-07-01), Walker-Arnott
patent: 4128348 (1978-12-01), Steele et al.
patent: 4132486 (1979-01-01), Kwan
patent: 4297043 (1981-10-01), Dargatz
IBM Technical Disclosure Bulletin; vol. 23, No. 8; Sweet et al.; "Reduced Consumption of Ribbon in an Impact Printer"; p. 3506; Jan. 1981.
IBM Technical Disclosure Bulletin; vol. 22, No. 7; Baker et al.; "Multicolor Printing"; p. 2633-2635; Dec. 1979.
"An Easy Guide for Operating the Remington Portable Typewriter"; Anonymous; 1925.

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