Patent ID: 7206526
Filing Date: 2007-04-17
Classification: G03G

Abstract:
1. An image forming apparatus comprising: an exchangeable toner cartridge; a display portion for notifying a toner near-empty; a storage portion for storing, as data, a toner amount housed in a new toner cartridge, a toner consumption amount when a toner cartridge is used and operating time of an image forming apparatus; and a control portion for executing a program for notifying a toner near-empty, wherein a toner supply prediction point and a toner supply preparation point are calculated and renewed at fixed time intervals from a toner amount housed in a new toner cartridge, a toner consumption amount when a toner cartridge is used and operating time of an image forming apparatus in the control portion, and when reaching the toner supply preparation point, a toner near-empty is displayed on the display portion to notify it.