Image forming apparatus and transfer voltage setting method

摘要

An image forming apparatus includes an image forming unit that forms an image with toner, an image carrier, a transfer unit that transfers an image from the image carrier to a medium, and a power supply control unit that applies a transfer bias generated by superimposing an AC bias and a DC bias to the transfer unit. Multiple first images are transferred to a medium, the first images being formed by setting one of an amplitude value of the AC bias, and a DC bias value representing a value of the DC bias to a fixed value and changing the other one at a preset interval. Multiple second images are transferred to a medium, the second images being formed by setting the one of the amplitude value and the DC bias value to a fixed value different from the fixed value, and changing the other one at a preset interval.

主权项

1. An image forming apparatus comprising:
an image forming unit that forms an image by using toner; an image carrier; a transfer unit that transfers an image from the image carrier to a medium; and a power supply control unit that applies a transfer bias to the transfer unit, the transfer bias being generated by superimposing an AC bias and a DC bias on each other, wherein a plurality of first images are transferred to a medium, the first images being formed by setting one of an amplitude value of the AC bias and a DC bias value representing the DC bias to a fixed value and changing another one of the amplitude value and the DC bias value at a preset interval, and wherein a plurality of second images are transferred to a medium, the second images being formed by setting the one of the amplitude value and the DC bias value to a fixed value different from the fixed value, and changing the other one of the amplitude value and the DC bias value at a preset interval.