Patent ID: 8379071
Filing Date: 2013-02-19
Classification: B41J,B65C

Abstract:
1. A label roll-up preventing device for a printer which prints a label, the printer having a rotatable platen roller and an opposing print head and a printer body configured to advance a label to be printed between the rotatable platen roller and the print head, to be printed by the print head; and the platen roller being configured to transfer the label with rotation of the platen roller, the label roll-up preventing device comprising: a roll-up preventing plate capable of fixing at a radial peripheral surface of the platen roller, relatively to the rotating platen roller, the plate having; a roll-up preventing projection edge at a portion of the roll-up preventing plate, the edge projecting out from the outer circumferential surface of the platen roller, and the edge being positioned and configured for contacting the back surface of the linerless label advancing past the platen roller; a rotating shaft of the platen roller, an arcuate fitting portion, which is fitted to the rotating shaft of the platen roller and is configured to permit rotation of the rotating shaft, the arcuate fitting portion having an exterior portion which forms the roll-up preventing projection edge, the edge is located at a downstream side of a contacting portion of the print head and the platen roller between the print head and the platen roller; and a pair of right and left fixing ends, located at both ends of the arcuate fitting portion, and configured for fixing the roll-up preventing plates relatively to the platen roller.