Patent ID: 6367731
Filing Date: 2002-04-09
Classification: B41J,B65H

Abstract:
A roll paper pulling load-buffering device for use in a printer having a print unit that prints on a surface of roll paper that is pulled from a paper roll and supplied to the print unit by rotation of a transportation roller, the roll paper pulling load-buffering device comprising:an arm rotatable within a specified angle about a center shaft for the roll paper; a roller extending from the arm widthwise of the roll paper on the outside of the roll paper; an urging means for urging the arm in a direction opposite to a direction in which the arm is moved circularly by a pulling force occurring when the roll paper is transported by the transportation roller; and an arc shaped guide centered on the center shaft for the roll paper, wherein the urging means is a first extension spring that stretches and contracts along the guide.