Patent ID: 6603944
Filing Date: 2003-08-05
Classification: G03G

Abstract:
A developing apparatus comprising:a developing roller for supplying non-magnetic single component toner deposited in a layered fashion on a circumferential surface of the developing roller to a surface of a photoreceptor by rotation of the developing roller at a predetermined speed; and a planar plate-like blade cantilevered at one end thereof, for regulating thickness of a toner layer by pressing a part of the other end of the blade against the circumferential surface of the developing roller, the other end of the blade being bent at a bending angle in a direction in which the other end of the blade is spaced apart from the circumferential surface of the developing roller, the bending angle being 45Â° or more, a bend of the other end of the blade being positioned downstream from a position which exists upstream by an amount between 0.0 to 1.0 mm from a tangent point, which is an intersection point at which the normal of the developing roller in a direction perpendicular to the blade intersects the circumferential surface of the developing roller, between the blade and the developing roller with respect to a direction of rotation of the circumferential surface of the developing roller.