| 摘要 |
A method and apparatus for controlling a transfer voltage applied to a transfer roller in order to transfer a toner image formed on an intermediate transfer member to a medium in a multi-path type electrophotographic image forming device are provided. An amount of toner transferred from the photoconductive member to the intermediate transfer member is detected, and a transfer voltage applied to the transfer roller using the detected amount of toner is determined. Accordingly, when an optimum transfer voltage is determined to be applied to the transfer roller in the multi-path type electrophotographic image forming device, by determining the transfer voltage applied to the transfer roller considering the amount of toner detected while the toner image is transferred from the photoconductive member to the intermediate transfer member, an improved printing quality can be maintained regardless of the coverage of an entire printing image.
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