Abstract: The pixels counting unit divides an area in a main-scanning direction of a recording material on which image formation is performed into a plurality of areas 1 to n based on a width that is a length in the main-scanning direction of the recording material, and measures a pixels count with respect to each area among the plurality of areas 1 to n defined by dividing the area in the main-scanning direction of the recording material.

Abstract: An image forming apparatus includes first and second image bearing members; first and second charging members; first and second developing members; a transfer member configured to sequentially transfer toner images from the first and second image bearing members to a transfer-receiving member; and a control portion configured to, at a timing determined based on information relating to the toner image formed on the first image bearing member, perform a cleaning operation of decreasing toner that adheres to the second charging member at a time of non-image formation.

Abstract: The pixels counting unit divides an area in a main-scanning direction of a recording material on which image formation is performed into a plurality of areas 1 to n based on a width that is a length in the main-scanning direction of the recording material, and measures a pixels count with respect to each area among the plurality of areas 1 to n defined by dividing the area in the main-scanning direction of the recording material.

Abstract: An image forming apparatus includes: first and second image bearing members; first and second charging members; first and second developing members; a transfer member configured to sequentially transfer toner images from the first and second image bearing members to a transfer-receiving member; and a control portion configured to, at a timing determined based on information relating to the toner image formed on the first image bearing member, perform a cleaning operation of decreasing toner that adheres to the second charging member at a time of non-image formation.

Abstract: A feeding device includes a detection unit, a control unit, a first plate on which a recording material is placed, a second plate located above the first plate in vertical direction, and an uplift unit to uplift a recording material placed on the first plate. The detection unit changes a detection result when an uplifted recording material arrives at a feeding position. The recording material placed on the first plate is uplifted by the uplift unit until the detection result is changed. The detection result is changed when a recording material fed from the second plate passes the detection unit while the recording material placed on the first plate is not in the feeding position. The control unit causes recording material to be sequentially fed from the second plate, and causes the uplift unit to uplift the recording material placed on the first plate in an interval time.

Abstract: A feeding device includes a detection unit, a control unit, a first plate on which a recording material is placed, a second plate located above the first plate in vertical direction, and an uplift unit to uplift a recording material placed on the first plate. The detection unit changes a detection result when an uplifted recording material arrives at a feeding position. The recording material placed on the first plate is uplifted by the uplift unit until the detection result is changed. The detection result is changed when a recording material fed from the second plate passes the detection unit while the recording material placed on the first plate is not in the feeding position. The control unit causes recording material to be sequentially fed from the second plate, and causes the uplift unit to uplift the recording material placed on the first plate in an interval time.