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Image forming apparatus that adjusts a secondary transfer condition for a secondary transfer device based on a degradation of toner
Image forming apparatus that adjusts a secondary transfer condition for a secondary transfer device based on a degradation of toner
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机译：图像形成装置，其基于调色剂的劣化来调整二次转印装置的二次转印条件
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摘要
An image forming apparatus includes an image bearing member, a toner image forming device, an intermediate transfer member, a primary transfer device, a toner adherence detector, a secondary transfer device, and a controller. The toner image forming device forms a toner image and a toner pattern for detection of degradation of toner on the image bearing member. The primary transfer device transfers the toner pattern onto the intermediate transfer member with transfer conditions that deliberately reduce transfer efficiency compared with that for image formation. The toner adherence detector detects an amount of toner adhered to the toner pattern at multiple places. The controller calculates a degree of degradation of toner based on the difference in the amount of toner adhered to the toner pattern detected by the toner adherence detector and adjusts secondary transfer conditions for the secondary transfer device based on the obtained degradation of toner.
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