Image forming apparatus configured to apply a transfer bias to a transfer nip based on a plurality of transfer conditions, image forming method, and recording medium

Abstract

An image forming apparatus includes: an image bearer, a transfer member disposed opposite the image bearer to form a transfer nip between the transfer member and the image bearer; a power supply device to apply a transfer bias; and processing circuitry to generate a plurality of transfer conditions for the transfer bias, the transfer conditions being different from each other and including a combination of values of at least a direct current (DC) component out of the DC component and an alternating current (AC) component, and switch the transfer conditions to apply the transfer bias from the power supply device to the transfer nip. The circuitry transfers an image from the image bearer to a recording material for each one of the transfer conditions according to an adjustment mode that is set among a plurality of adjustment modes for adjusting a transfer bias corresponding to the recording material.