Patent ID: 9656479
Date: 2017-05-23
CPC Classifications: B41J

Claim:
1. A labelling machine comprising: a first motive apparatus configured to advance a label web along a label web path; an encoder arranged to output a sensor signal which is indicative of a rate of movement of said label web along said label web path; and a printer configured to print on said label web, the printer including a second motive apparatus configured to advance a print ribbon along a ribbon path; the labelling machine further comprising a controller configured to receive said sensor signal and control the second motive apparatus based on the sensor signal; and wherein the controller is configured to supply a pulsed control signal to the second motive apparatus, the intervals between pulses of the pulsed control signal being a function of a desired rate of movement of the print ribbon along the ribbon path; wherein the controller is configured such that if the controller is controlling the second motive apparatus to advance the print ribbon at a first rate of movement having a first series of intervals between pulses, and the controller receives said sensor signal being indicative of the label web moving along label web path at a second rate of movement greater than the first, then the controller supplies a re-timed pulse to the second motive apparatus at a time which is before a next pulse defined by the first series of intervals.