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US 8,078,089 B2Granted
Development apparatus with a development roller scraper and image forming apparatus including the same
AssigneeSharp Kabushiki Kaisha
InventorsHisashi Kunihiro, Koichi Mihara
Life of this patent
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Abstract
One embodiment of a development apparatus includes a developer carrier that transports a two-component developer and a scraper that detaches the two-component developer transported by the developer carrier from a surface of the developer carrier. Also, a front end of the scraper is formed so as not to have an edge that is less than 90 degrees. Further, the development apparatus includes a scraper pedestal having rigidity, and the scraper is fixed on the scraper pedestal.
Claims11
A development apparatus comprising:
- a developer carrier that transports a two-component developer;
- and
- a scraper that detaches the two-component developer transported by the developer carrier from a surface of the developer carrier, wherein a front end of the scraper is formed so as not to have an edge formed between two surfaces that form an angle of less than 90 degrees, and wherein the scraper is disposed so that a gap of 0.8 to 1.5 mm is formed between the scraper and a surface of the developer carrier.
A development apparatus comprising:
- a developer carrier that transports a two-component developer;
- and
- a scraper that detaches the two-component developer transported by the developer carrier from a surface of the developer carrier, wherein a front end of the scraper is formed so as not to have an edge formed between two surfaces that form an angle of less than 90 degrees, and wherein the scraper is made of a resin that includes electrically conductive carbon black.
A development apparatus comprising:
- a developer carrier that transports a two-component developer;
- and
- a scraper that detaches the two-component developer transported by the developer carrier from a surface of the developer carrier, wherein a front end of the scraper is formed so as not to have an edge formed between two surfaces that form an angle of less than 90 degrees, and wherein the scraper is made of a resin that includes a silica microparticle or a glass fiber.
Dependencies are inferred from the claim text.