Patent ID: 8442414

Claim:
A seal member that covers a space between a casing and a rotating member, the space extending in a longitudinal direction of the rotating member, the seal member including a first end and a second end, the first end being fixed to the casing and extending along the longitudinal direction, and the second end extending along the longitudinal direction and coming into contact with the rotating member, the seal member comprising: a flexible sheet that extends from the first end to the second end; and a reinforcing member attached to the flexible sheet at an attachment surface between the reinforcing member and the flexible sheet, the reinforcing member being located near the first end, the reinforcing member including a plurality of notches extending from the attachment surface in a direction perpendicular to the longitudinal direction and into an end of the reinforcing member that is closer to the second end, and a coefficient of linear expansion of the reinforcing member is smaller than a coefficient of linear expansion of the flexible sheet.