Patent ID: 8923709
Filing Date: 2014-12-30
Classification: G03G

Abstract:
1. An image forming apparatus comprising: a main casing; a cartridge configured to be attached to and detached from the main casing and to accommodate therein developing agent, the cartridge having a cartridge electrode configured to receive electric power from the main casing; and a processing unit provided in the main casing and configured to determine a condition of the cartridge, the main casing comprising: the cartridge comprising: wherein the processing unit determines that the condition of the cartridge is new when, in sequence after the cartridge has been attached to the main casing, the electrical connection is established between the cartridge electrode and the first main electrode and between the cartridge electrode and the second main electrode after the electrical connection is interrupted between the cartridge electrode and at least one of the first main electrode and the second main electrode, and then the electrical connection is once again interrupted between the cartridge electrode and at least one of the first main electrode and the second main electrode.