Patent ID: 9656285
Date: 2017-05-23
CPC Classifications: B05C,H01M,Y02E,Y02P

Claim:
1. A roll member having an outer circumferential surface in which a plurality of grooves are formed, wherein the plurality of grooves are arranged at an angle relative to a direction parallel to a central axis of the roll member; in the outer circumferential surface of the roll member, there are provided a processing region where the plurality of grooves are formed and a non-processing region where the plurality of grooves are not formed; a plurality of rows of the processing region and a plurality of rows of the non-processing region are arranged alternately along the direction parallel to the central axis; the plurality of rows of the non-processing region is arranged at a direction orthogonal to the direction parallel to the central axis; the processing region has a first processing region provided in one end portion in a width direction of the processing region parallel to the central axis, a second processing region provided in the other end portion in the width direction of the processing region, and a third processing region that is a processing region other than the first and second processing regions; grooves in the third processing region are even in depth; grooves in the first processing region are smaller in depth than the grooves in the third processing region; the depth of the grooves in the first processing region gradually decreases as the distance from the one end portion in the width direction of the processing region decreases; grooves in the second processing region are smaller in depth than the grooves in the third processing region; the depth of the grooves in the second processing region gradually decreases as the distance from the other end portion in the width direction of the processing region decreases; and a first length that is the length of the first processing region in the direction parallel to the central axis is different from a second length that is the length of the second processing region in the direction parallel to the central axis.