Thermal printing device for feeding tightly stretched paper

Details Thermal printing device for feeding tightly stretched paper Thermal printing device for feeding tightly stretched paper

1989-06-21

1990-11-20

Reynolds, Bruce A.

Recorders

Thermal recording

400120, G01D 1510

Patent

active

049722077

ABSTRACT:
A thermal printing system of this type is able to obviate loosening of the paper sheet stock during its feeding step prior to printing, and thereby to prevent crumpling of the paper and information of misaligned print from occuring. A thermal printing system capable of performing aforesaid function can be achieved by making the printing system as such one comprising, a platen, a pair of pinch rollers one end of each of which is rotaably supported by each one of a pair of pinch roller levers and is resiliently biased by a pinch roller lever tensioning spring so that each pinch roller can be brought into tight contact with aforesaid platen, and a paper stock holding cassette case attached with a paper feed roller for feeding paper stock for printing, in which the peripheral speed of the platen is set higher than that of the paper feed roller of the paper holding cassette. By virtue of this improved construction, the feed roller attached to the paper holding cassette is utilized as a type of brake means for imparting back tension for the purpose of stretching the sheet of paper being fed.

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