Patent ID: 8011611
Filing Date: 2011-09-06
Classification: B65H

Abstract:
1. A recording medium transporting mechanism comprising: a flange member attached on either side of a roll paper, the roll paper having a recording medium wound on a core cylinder, the flange member having an outer diameter smaller than a maximum outer diameter of the roll paper; a plurality of sets of support rollers, each set of the support rollers supports a corresponding one of the flange members in a rotatable manner, at least one set of support rollers is configured to move in a longitudinal direction of the roll paper, and a sum of outer diameters of the flange member and the corresponding support roller is greater than a maximum outer diameter of the roll paper; a paper feed roller configured to feed the recording medium in a feeding direction from the roll paper via the support rollers; and a rewinding roller having a length greater than or equal to a maximum distance between one set of support rollers and another set of support rollers, engaging with one support roller of the one set, and configured to rotate the flange member in a rewinding direction reversed to the feeding direction.