Konica Minolta Business Technologies, Inc.

Masato Kubota

Satoshi Nishida

Toshiki Hayami

An image forming apparatus, including: an image carrier; an image forming section to form a toner image on the image carrier; a transfer section to transfer the toner image formed on the image carrier to an intermediate transfer body or a recording sheet; a cleaning section to remove not transferred toner particles remaining on the image carrier, an image covering density calculating section to calculate an average image covering density of the toner image formed on plural areas divided in a lateral direction of the image carrier, during a predetermined time period; an obtaining section to obtain a difference of the average image covering density in each divided area, based on the image covering density calculated by the image covering density calculating section; and an adjusting section to adjust an amount of abrasive particles to be supplied to each divided area, based on the differences obtained by the obtaining section.

Image forming apparatus with image covering density calculating section

An image forming apparatus which forms a toner image, includes: an image carrier which carries the toner image thereon; a transfer section which interposes a transfer member at a transfer nip between the image carrier and the transfer section thereby to transfer the toner image on the image carrier onto the transfer member; a voltage applying member provided downstream of the transfer nip in a moving direction of the transfer member; a power source section which applies a voltage to the voltage applying member; and a control section which controls the voltage applied by the power source section. The control section controls the power source section to apply a prescribed voltage to the voltage applying member so that the prescribed voltage has the same polarity as that of a toner used in the apparatus and the voltage applying member does not carry out a self-discharge to the transfer member.

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Hachioji, Japan

Masato Kubota