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AssigneeSharp Kabushiki Kaisha
InventorsTamaki Mashiba, Akihiko Taniguchi
Estimating the term…
An image-quality stabilizer provided in a copying machine executes a feedback control on a charger output based on an adhering toner amount detected by a patch sensor in a pre-rotation of the photoreceptor drum directly before each copying operation is started. A time interval between feedback controls is counted by a timer, and a CPU sets an appropriate time interval in accordance with an amount of change in the adhering toner amount detected by the patch sensor or in accordance with the charger output before and after feedback control. According to the described arrangement, since the feedback control is executed at a timing set in accordance with the amount of change in adhering toner, variations in image quality such as an increase in image density caused by overcompensation and an excessive feedback control can be prevented, thereby ensuring stable image quality by efficiently compensating the image density without increasing an amount of toner consumption.
An image quality stabilizer for use in an electrophotographic printing machine, comprising:
An image-quality stabilizer for use in an electrophotographic printing machine, comprising:
An image-quality stabilizer for use in an electrophotographic printing machine:
Dependencies are inferred from the claim text.