Patent ID: 9423750
Filing Date: 2016-08-23
CPC Classification: G03G

Claim Text:
1. An image forming apparatus comprising: an image bearing member; a latent image forming unit configured to form an electrostatic latent image on the image bearing member based on image data; a development unit configured to develop the electrostatic latent image using toner; a container configured to contain toner; a replenishment unit configured to replenish the toner to the development unit from the container; a first determination unit configured to determine, based on the image data, a first value corresponding to an amount of the toner consumed from the development unit; a detection unit configured to detect an amount of the toner contained in the development unit; a second determination unit configured to determine a second value corresponding to a difference between the amount of the toner detected by the detection unit and a target toner amount; a third determination unit configured to perform an accumulative calculation based on the second value to determine a third value; and a controller configured to control the replenishment unit, based on the first value, the second value and the third value, wherein in a case where a toner consumption amount consumed by the development unit is less than a predetermined amount and the amount of the toner detected by the detection unit is more than the target toner amount, the third determination unit does not perform the accumulative calculation based on the second value.