(57) A device (41) for intermittently feeding a strip of paper (22) from a roll (27) comprising
at least one feeding roller (29) engaging with the strip and interposition means (51)
for forming a buffer of paper (52) between roll and roller, wherein the feeding roller
(29) is suitable for feeding the strip (22) intermittently towards a printing zone
(24). The interposition means (51) variably release a certain amount of paper from
the buffer to the feeding roller and comprise control means (47, 56, 57) servodriven
in relation to the motion conditions of the feeding roller (29) in order to cause,
in a controlled manner, transfer to the roller of a portion of strip from the buffer
(52) and withdrawal from the roll (27) of the said portion of strip for reformation
of the buffer.
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