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AssigneeCanon Kabushiki Kaisha
InventorsYasunao Ohtomo, Norihito Naito, Hideaki Hasegawa
Estimating the term…
An image forming apparatus has full- and half-speeds as image forming speeds. In the full-speed mode, a detected voltage value conforming to the electrostatic capacity between a developing roller and plate antenna of a process cartridge is converted to the amount of toner remaining in the apparatus. In the half-speed mode, on the other hand, the amount of remaining toner is found using a value obtained by adding a correction value δ to the detected voltage value conforming to the electrostatic capacity between the developing roller and plate antenna. As a result, the amount of toner can be sensed accurately even if the electrification conditions of an image carrier change.
An image forming apparatus comprising:
A cartridge removably loaded in an image forming apparatus, said cartridge comprising:
A memory device mounted on a cartridge removably loaded in an image forming apparatus that includes an image carrier for carrying an electrostatic latent image;
A method of controlling an image forming apparatus that includes an image carrier for carrying an electrostatic latent image;
An image forming apparatus comprising:
Dependencies are inferred from the claim text.