| 摘要 |
A sheet feed roller prolonging sustainability of sheet feeding capability even if crushed powders are scattered. The sheet feed roller comprises a hub and an elastic layer provided on an outer peripheral surface of the hub, wherein plural grooves axially extend at specific intervals circumferentially on an outer peripheral surface of the elastic layer, a textured surface comprising mountain portions and a valley portion is formed on an outer peripheral surface of the elastic layer except for the grooves, and on bottom surfaces and wall surfaces of the grooves, a ratio of a total area of the bottom surfaces of the grooves to a total area of the outer peripheral surface of the elastic layer except for the grooves is 10% to 20%. |
