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US 7,734,213 B2Granted
Developing device, process cartridge, and image forming apparatus
AssigneeBrother Kogyo Kabushiki Kaisha
InventorsHiroya Fukuta, Bak Kyo Suh
Life of this patent
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Abstract
A secure seal is provided between a blade unit and a housing in a developer unit of an image forming apparatus by utilizing a sheet member configured to cover a step height formed on a surface of the blade unit facing a sealing member.
Claims19
A developing device comprising:
- a housing having an opening;
- a sealing member disposed along the opening of the housing;
- a developing roller rotatably supported by the housing and configured to carry developer on a surface of the developing roller;
- a blade unit disposed in the opening of the housing to sandwich the sealing member between the blade unit and the housing, the blade unit comprising.
- a blade disposed in contact with the surface of the developing roller on a first end side of the blade;
- and
- a reinforcing plate configured to reinforce the blade on a second end side opposite the first end side, and
- a sheet member configured to cover a step height formed on a surface of the blade unit facing the sealing member.
5 more elements
Dependencies are inferred from the claim text.