Image forming apparatus with adjustment of toner content in developer
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United States of America Patent
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Aug 27, 2019
Grant Date -
Jan 18, 2018
app pub date -
Jul 7, 2017
filing date -
Jul 13, 2016
priority date (Note) -
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status (Latency Note)
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Abstract
An image forming apparatus includes an image bearing member, a developing device, a toner content detecting portion, a toner supplying device, an image ratio calculating portion, a toner image density detecting portion, an adjusting portion, and a controller. The controller is configured to control an execution frequency of the adjusting portion so that execution by the adjusting portion is carried out after a number of times of image formation after occurrence of a change rate of the image ratio that is greater than a predetermined change rate reaches a first value, and execution by the adjusting portion is carried out after the number of times of image formation after occurrence of a change rate of the image ratio that is less than the predetermined change rate reaches a second value greater than the first value.
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