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US08934790B2 Development apparatus and image forming apparatus using the same 有权
显影装置和使用其的图像形成装置

Development apparatus and image forming apparatus using the same
Abstract:
A development apparatus and an image forming apparatus wherein optical high-precision detection of the toner amount of a toner layer formed on a toner carrying member is ensured even when the great amount of the toner is deposited on the toner carrying member by transferring all or a part of the toner on the surface of the toner carrying member onto a detecting roller, and wherein stable images are provided at all times.
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