Patent ID: 8057339
Filing Date: 2011-11-15
Classification: B41J,F16H

Abstract:
1. A pulley holder for rotatably supporting a pulley around which a belt is to be wound, the pulley holder comprising: a shaft including: a holder body having a first groove, a second groove, and a third groove, wherein the first end portion and the second end portion of the shaft body are received by the first groove and the second groove, respectively, and the projection is received by the third groove to prevent the shaft body from rotating with respect to the holder body while allowing the pulley supported by the pulley supporting portion to rotate around the pulley supporting portion, and wherein the shaft body has a cylindrical shape and the projection has a cylindrical shape whose diameter is smaller than the diameter of the shaft body, the axis of the shaft body being parallel with an axis of the projection, wherein the belt wounded around the pulley extends from the pulley in a first direction, and the first groove, the second groove, and the third groove extend in a direction parallel to the first direction and are open at an end of the holder body in a second direction opposite to the first direction, and wherein a groove width of the first groove is substantially the same as a diameter of the first end portion of the shaft body, a groove width of the second groove is substantially the same as a diameter of the second end portion of the shaft body, and a groove width of the third groove is substantially the same as the diameter of the projection.