Patent ID: 8306445
Filing Date: 2012-11-06
Classification: G03G,Y10T

Abstract:
1. An image forming apparatus comprising: a mounting part configured to allow plural types of cartridges having different initial capacities of developing agent to be detachably mountable therein; a light emitting device configured to emit light into a cartridge mounted in the mounting part; a light receiving device configured to receive light emitted from the light emitting device and passed through an inside of the cartridge; a determining unit configured to determine a replacement time of the cartridge based on a light reception signal of the light receiving device; a detecting unit configured to detect an initial capacity of the cartridge mounted in the mounting part; and a light emission time changing unit configured to change a light emission time of the light emitting device in accordance with the initial capacity of the cartridge detected by the detecting unit such that the light emission time decreases as the initial capacity of the cartridge becomes smaller.