Method in a label printer

A method of printing a label in a label printer, the label printer comprising:

• a label supply spool (120) configured to supply a label web comprising a label (191) attached to a carrier (191);
• a label rewinder (130) configured to receive at least the carrier of the label web and rotationally operatable by a label rewinder motor (132);
• a drive roller (172),
• the method comprising:
• during a print operation:
• rewinding the carrier by means of the rewinder with controlled torque;
• if an ongoing extension removal operation:
• in a first period of time rewind with a controlled speed, and
• in a second period of time rewind with a second speed higher than a surface speed of the drive roller;
• during an optional non-printing operation:
• rewinding the carrier by means of the rewinder by controlling the speed;
• during a backfeed operation:
• creating an extension, substantially with known size, in the carrier by controlling the speed of the rewinder in a opposite direction;
• and
• during an extension removal operation:
• rewinding the carrier with the rewinder, wherein the rewinder:
• in a first period of time has a controlled speed, and
• in a second period of time has a second speed higher than a surface speed of the drive roller.

A method of printing a label in a label printer, the label printer comprising:

• a label supply spool (120) configured to supply a label web comprising a label (191) attached to a carrier (191);
• a label rewinder (130) configured to receive at least the carrier of the label web and rotationally operatable by a label rewinder motor (132);
• a drive roller (172),
• the method comprising:
• during a print operation:
• rewinding the carrier by means of the rewinder with controlled torque;
• if an ongoing extension removal operation:
• in a first period of time rewind with a controlled speed, and
• in a second period of time rewind with a second speed higher than a surface speed of the drive roller;
• during a non-printing operation:
• rewinding the carrier by means of the rewinder by controlling the speed;
• during a backfeed operation:
• creating an extension, substantially with known size, in the carrier by controlling the speed of the rewinder in a opposite direction;
• and
• during an extension removal operation:
• rewinding the carrier with the rewinder speed or torque controlled.

A label printer (100) at least comprising:

• a label supply spool (120) configured to supply a label web comprising a label (191) and a carrier (191);
• a label rewinder (130) configured to rewind at least the carrier;
• a drive roller (172);
• and
• a controller (103);
• wherein the controller is configured to:
• instruct the label rewinder to operate in an opposite direction to a rewind direction and building or continue to build an extension (195) on the carrier between the drive roller (172) and the carrier rewinder (130) during a backfeed operation of the label web;
• instruct the rewinder to a backfeed operation by rotating the drive roller (172) in a direction opposite to the print operation direction until a next label is displaced back to a start print position;
• stop the drive roller after backfeed when a length of the extension (195) is reduced;
• and
• instruct the rewinder (130) to rewind in the rewinder operation direction causing the carrier to tense.