A printer including: a powder housing chamber that houses powder including a color material and carrier; a supplying conveying unit that conveys the powder while supplying the powder to a powder holder that holds the powder, by forward rotation; a detection unit that detects the amount of powder within the powder housing chamber, upstream in a conveyance direction from a discharge unit that discharges surplus powder, downstream in the conveyance direction from the supplying conveying unit, and above a rotary shaft of the supplying conveying unit; and a control unit that controls at least one of the rotation direction and the rotation speed of the supplying conveying unit on the basis of a detection result of the detection unit.