Image forming apparatus and toner remaining amount determining method

Abstract

An image forming apparatus includes a development device in which a toner supplied by a toner cartridge section is carried by a magnetic carrier and is discharged, a first sensor to acquire information indicating a supply amount of the toner supplied by the toner cartridge section to the development device, a second sensor to acquire information indicating a toner density in the development device, and a controller which updates the information indicating the total supply amount and stored in a storage section storing information indicating a total supply amount of the toner supplied by the toner cartridge section to the development device based on the information acquired by the first sensor and determines a toner remaining amount in the development device based on the information indicating the total supply amount and stored in the storage section and the information indicating the toner density acquired by the second sensor.

Dependencies are inferred from the claim text.