Ink ribbon feed

Details Ink ribbon feed Ink ribbon feed

1991-12-30

1994-03-15

Burr, Edgar S.

Typewriting machines

Typing by other than type-face or type-die

Thermal

400223, 400225, B41J 2325

Patent

active

052942031

ABSTRACT:
Thermal printing apparatus is disclosed in which a thermal transfer ink ribbon (14) is drawn from a supply spool (15) past a thermal print head (12) in ink transfer engagement with an item (17) on which printing is to be effected. The used ribbon is wound upon a take up spool (16) which is driven to apply tension to the used ribbon to peel it from the face of the printed item. Drive (43) to the take up spool is controlled by a pivoted member (22) which actuates a switch (26) to apply drive when the ribbon is slack and to terminate energisation of the drive as the ribbon becomes taut.

REFERENCES:
patent: 3882774 (1975-05-01), Pfiz
patent: 4025830 (1977-05-01), Delaporte
patent: 4705417 (1987-11-01), Harry
patent: 4723853 (1988-02-01), Suzaki et al.
patent: 4813802 (1989-03-01), Gilham et al.
patent: 4821644 (1989-04-01), Gawler
patent: 4924240 (1990-05-01), Herbert et al.
W. M. Jenkins "End-of-Ribbon Sensor and Cartridge-Present Indicator" IBM Technical Disclosure Bulletin. vol. 27, No. 6 Nov. 1984.

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