Canon Kabushiki Kaisha

Koichiro Masui

Nobuyoshi Yoshida

Masataka Mochizuki

Motonari Ito

Taku Watanabe

Kenta Shibukawa

An image forming apparatus includes a charging member, a light source, and a light quantity lowering member. The light quantity lowering member is provided so that a lowering amount of a quantity of a part of light reflected by a surface of a member at each of end portions of a charging region where the surface of the image bearing member is charged by the charging member is larger than that at a portion inside an associated end portion with respect to a rotational axis direction of the image bearing member.

Image forming apparatus and cartridge

A cartridge includes: a developer accommodating chamber, provided with an opening, for accommodating a developer; a sealing member, provided with an electroconductive portion, for sealing the opening; and a storing element, provided with an electrical contact at a surface thereof, for storing information on the cartridge. The electroconductive portion covers the electrical contact.

Cartridge, developing cartridge, process cartridge and image forming apparatus

An image forming apparatus includes a rotatable image bearing member for bearing a developer image, a developing device for developing an electrostatic latent image on the image bearing member into the developer image and a cleaning blade. In addition, a controller executes a stop operation of the image bearing member in which the image bearing member is, after being temporarily stopped at an end of an image forming operation, rotated in the same direction as that during the image forming operation and then is rotated in a direction opposite to that during the image forming operation, and a predicting portion predicts a remaining usable lifetime of the image bearing member. In the stop operation of the image bearing member after the remaining usable lifetime is below a threshold, the controller controls an amount of rotation in the direction opposite to that during the image forming operation so as to be smaller than the amount of rotation before the remaining usable lifetime is below the threshold.

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Numazu, Japan

Koichiro Masui