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US 9,002,218 B2Granted
Developing device and image forming apparatus
AssigneeFuji Xerox Co., Ltd.
InventorYoshinori Yamaguchi
Life of this patent
Estimating the term…
Abstract
Provided is a developing device including a container that contains developer; a developing roller that transports the developer within the container to a photoconductor side; a trimmer having a tip brought close to the developing roller, and provided upstream of the photoconductor in a transporting direction by the developing roller; and a detector provided in the trimmer or in the vicinity of the trimmer of the inner surface of the container to detect the pressure caused by the developer.
Claims6
A developing device comprising:
- a container that contains developer;
- a developing roller that transports the developer from the container in a transport direction toward a photoconductor;
- a trimmer having a tip brought close to the developing roller, and provided upstream of the photoconductor in the transporting direction by the developing roller;
- and
- a detector provided in a throttling region of an inner surface of the container to detect the pressure caused by the developer, the throttling region being a narrowing region of the container leading to the trimmer that narrows along the transporting direction.
2 more elements
An image forming apparatus comprising:
- a container that contains developer;
- a developing roller that transports the developer from the container in a transport direction toward a photoconductor;
- a trimmer having a tip brought close to the developing roller, and provided upstream of the photoconductor in the transporting direction by the developing roller;
- a detector provided in a throttling region of an inner surface of the container to detect the pressure caused by the developer, the throttling region being a narrowing region of the container leading to the trimmer that narrows along the transporting direction;
- a determination unit comparing the pressure detected by the detector with a preset pressure and determining the state of the developer;
- and
- an output unit outputting information of a determination result obtained by the determination unit.
4 more elements
Dependencies are inferred from the claim text.