Thermal ink cassette for a thermal printing device

Details Thermal ink cassette for a thermal printing device Thermal ink cassette for a thermal printing device

1994-12-27

1997-04-08

Fuller, Benjamin R.

Incremental printing of symbolic information

Thermal marking apparatus or processes

Ink cassette or cartridge

400234, B41J 3100, B41J 3314

Patent

active

056192444

ABSTRACT:
The thermal ribbon cassette is attachable to a thermal printing apparatus, the cassette housing is formed by a forward section attached to a rear wall to define a chamber. A supply spool is rotatively mounted to the forward section and the rear wall in the chamber. The supply spool has an ink transfer ribbon continuously wrapped there around and a number of interrupters continuously formed around the edge of the spool. A drag spring is mounted to the rear wall and biased against the interrupters for providing a rotational drag force. The take-up spool is rotatively mounted to the forward section and the rear wall in the chamber, the ink transfer ribbon has one end fixably mounted to the take-up spool and a portion extending through slots in the housing such that a portion of the ink transfer ribbon extends externally to said chamber. A locking gear arrangement is provided for preventing rotation of the take-up spool except in a forward direction.

REFERENCES:
patent: 4676678 (1987-06-01), Watanabe
patent: 4908632 (1990-03-01), Ishikawa et al.
patent: 5192149 (1993-03-01), Gillio
Grafstein, Paul, et al., Pictorial Handbook, N.Y., Chemical Publishing Co., Inc, 1971. pp. 58-75.

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