Developer roller, and image forming apparatus including the developer roller
AssigneeSamsung Electronics Co., Ltd.
InventorKatsuhiro SHUKURI
Life of this patent
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Abstract
A developer roller is spaced apart by a developing gap from a photosensitive medium and supplies toner to an electrostatic latent image formed on the photosensitive medium to develop the electrostatic latent image. The developer roller includes a core and at least one material layer formed on an outer circumference of the core. A ten-point average roughness of an outermost layer in the material layer is 5-15% of the developing gap.
Claims13
A developer roller which is spaced apart by a developing gap from a photosensitive medium and supplies one-component toner to an electrostatic latent image formed on the photosensitive medium to develop the electrostatic latent image, the developer roller comprising:
- a core;
- and
- at least one material layer formed on an outer circumference of the core,
- wherein a ten-point average roughness of an outermost layer in the material layer is about 5-15% of a width of the developing gap.
An image forming apparatus using a non-magnetic, one-component toner, comprising:
- a photosensitive medium on which an electrostatic latent image is formed;
- and
- a developer roller spaced apart from the photosensitive medium by a developing gap, the developer roller supplying toner to the electrostatic latent image to develop the electrostatic latent image, the developer roller comprising:
- a core;
- and
- at least one material layer formed on an outer circumference of the core,
- wherein a ten-point average roughness of an outermost layer in the material layer is about 5-15% of a width of the developing gap.
An image forming apparatus, comprising:
- a photosensitive medium to carry an electrostatic latent image;
- and
- a developer roller to supply toner to the electrostatic image, the developer roller having a ten-point average surface roughness of about 5-15% of a width of a developing gap between the developer roller and the photosensitive medium.
Dependencies are inferred from the claim text.