US 8,620,186 B2 · Image forming apparatus

Abstract

An image forming apparatus includes an image bearing member; a brush roller, rotatable in a predetermined rotational direction, contacted to the image bearing member; and an applying device for applying a bias to the brush roller. The brush roller includes a shaft and a woven fabric brush including fibers planted in a strip-like base material, which is wound helically about the shaft with a helical winding gap. The woven fabric brush is subjected to fiber slanting processing so that the fibers of the helically wound woven fabric brush are slanted, so as to cover the helical winding gap, from a downstream side toward an upstream side with respect to a longitudinal direction in which a helically extending widthwise edge of the base material appears to be moving when the brush roller rotates in the predetermined rotational direction.

Claims8

Dependent claims

An image forming apparatus comprising:

an image bearing member;
a brush roller, rotatable in a predetermined rotational direction, contacted to said image bearing member;
and
applying means for applying a bias to said brush roller,
wherein said brush roller includes a shaft and a woven fabric brush including fibers planted in a strip-like base material which is wound helically about the shaft with a helical winding gap, and
wherein the woven fabric brush is subjected to fiber-slanting processing so that the fibers of the helically wound woven fabric brush are slanted, so as to cover the helical winding gap, from a downstream side toward an upstream side with respect to a longitudinal direction in which a helically extending widthwise edge of the base material is seen moving when said brush roller rotates in the predetermined rotational direction.

3 more elements

An image forming apparatus comprising:

a photosensitive member;
a brush roller, rotatable in a predetermined rotational direction, contacted to said photosensitive member;
a power source configured to apply a bias to said brush roller;
and
a driving device configured to rotate said brush roller,
wherein said brush roller includes a shaft and a woven fabric brush including fibers planted in a strip-like base material which is wound helically about the shaft with a helical winding gap, and
wherein when a direction opposite to a direction in which the helical winding gap is seen moving in an axial direction of said brush roller when said brush roller rotates in the predetermined rotational direction is a direction X, 90% or more of the fibers of said brush roller are slanted in the direction X.

4 more elements

Dependencies are inferred from the claim text.

Image forming apparatus

Life of this patent

Image forming apparatus

Life of this patent

Abstract

Claims8