Patent ID: 8052589
Filing Date: 2011-11-08
Classification: B65H

Abstract:
1. A sheet conveying roller comprising: a shaft supported by bearings at both ends thereof; and an elastic frictional member provided on an outer circumference of the shaft, wherein the shaft is a pipe shaft, the both ends of the pipe shaft are formed into small-diameter portions, and a mount portion on which the frictional member is mounted is formed into a large-diameter portion having a diameter larger than a diameter of the both ends, wherein the sheet conveying roller conveys a sheet in contact with an outer periphery of the frictional member, at least one hole in the large-diameter portion extending through the large-diameter portion to form a passage between an inner side of the pipe shaft and an outer side of the pipe shaft, at least one projection is formed on an inner surface of the frictional member, and the at least one projection formed on the frictional member is insertable into the at least one hole in the large-diameter portion to be engaged with the at least one hole so that the frictional member is locked with the pipe shaft, wherein the frictional member is mounted on the large-diameter portion in a C-shaped cross section, while the at least one projection formed on the frictional member is detachably attached to the at least one hole in the large-diameter portion, wherein a chevron portion and a valley portion are formed on opposite ends of the C-shaped cross section of the frictional member so that the chevron portion and the valley portion intermesh with each other.