Image forming device and method having optimum print quality by control of fixture temperature and/or transfer voltage

摘要

An image forming device forms an image on a recordable medium with image data supplied from a document. The device provides an otpimum print quality by varying a fixing temperature of a fixing unit after presuming an amount of consumed toner. In another embodiment, the image forming device is capable of supplying an optimum print quality by varying a transferring voltage level of a transfer unit after presuming the amount of consumed toner.