Patent ID: 8909109
Filing Date: 2014-12-09
Classification: G03G

Abstract:
1. A developing device comprising: a casing; a developing roller rotatably supported by the casing and defining an axis extending in an axial direction, the developing roller being configured to rotate in a rotational direction and to carry a layer of developer thereon; a resiliently deformable blade supported by the casing and extending in the axial direction, the blade having a first surface facing the developing roller; and a regulation portion configured to be in contact with the developing roller to regulate a thickness of the layer of the developer carried on the developing roller, wherein the blade is formed with a through-hole to allow a material of the regulation portion to pass therethrough in order to form the regulation portion on the blade, wherein the through-hole is the only through-hole formed in the blade configured to allow the material of the regulation portion to pass therethrough, wherein the through-hole is formed in a central area in the axial direction of the blade, and wherein the central area is a middle of three areas when the blade is divided into the three areas having a length in the axial direction equal to each other.