Patent ID: 9086655
Filing Date: 2015-07-21
Classification: G03G

Abstract:
1. A developing device comprising: a casing configured to accommodate developer; a developing roller; a seal member, at least a portion of which is disposed between the developing roller and the casing, the seal member including a fabric member having a plurality of first fibers extending in a first direction and a plurality of second fibers extending in a second direction different from the first direction, wherein the plurality of first fibers and the plurality of second fibers intersect each other, and each of the first fibers and the second fibers of the fabric member include a circumferential surface which has a first heat radiation amount per unit area, and an end surface having a second heat radiation amount per unit area larger than the first heat radiation amount per unit area; and a heat radiation member disposed at an end portion of the seal member in an axial direction of the developing roller and configured to contact the end surfaces of the first fibers and the second fibers.