Ribbon drive system for a thermal demand printer

Incremental printing of symbolic information – Thermal marking apparatus or processes – With transfer medium or driving means therefor

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242571, 2425714, 2425715, 2425739, B65H 7522, B41J 3314

Patent

active

060209062

ABSTRACT:
A demand printer for printing on media includes a ribbon take-up spindle for accumulating spent printing ribbon and facilitating removal of the spent ribbon from the spindle. The spindle has a surface with a protrusion bore formed therethrough. At least one protruding segment extends through the protrusion bore. The protruding segment controllably projects away from the spindle surface for maintaining a space between a portion of the spindle surface and the spent ribbon accumulated on the spindle. A biasing structure is operatively associated with the spindle and the protruding segment for controllably biasedly directing the protruding segment through the protrusion bore in the spindle. A retracting structure is provided for controllably compressing and expanding the biasing means to controllably move the protruding segment through the protrusion bore.

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patent: 5015324 (1991-05-01), Goodwin et al.
patent: 5028155 (1991-07-01), Sugiura et al.
Patent Abstracts of Japan, vol. 013, No. 143(M-811), Apr. 7, 1989 and JP 63 306147 A(Sony Corp.), Dec. 14, 1988.

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