Patent ID: 7376366
Filing Date: 2008-05-20
Classification: G03G

Abstract:
1. An image-forming device comprising: an image-carrying unit that supports a toner; a transferring unit that transfers the toner supported on the image-carrying unit onto a recording medium, the transferring unit opposing to the image-carrying unit at a transferring position; a power-supplying unit that supplies voltage and current to the transferring unit to transfer the toner onto the recording medium; a current-detecting unit that detects the current flowing in the transferring unit; a voltage-detecting unit that detects the voltage applied to the transferring unit; a memory unit that stores a characteristic curve indicating a correlation between an optimal current and at least the detected voltage, the optimal current enabling the transferring unit to transfer the toner supported on the image-carrying unit onto the recording medium; and a controller that controls the power-supplying unit to supply the optimal current to the transferring unit.