Patent ID: 8167307

Claim:
An image forming apparatus comprising: an image forming unit that forms an image; and a conveyance unit that conveys a medium to be recorded opposing the image forming unit; wherein the conveyance unit includes a platen member that guides the medium to be recorded and has plural suction holes formed therein, plural air chambers that the plural suction holes formed in the platen member face, and plural suction units that suction air inside the plural air chambers through the suction holes, at least two or more of the plural air chambers being arranged in a direction crossing a conveyance direction of the medium to be recorded, one of the plural air chambers being connected to one of the plural suction units and one or two or more of the plural air chambers being connected to at least one of the plural suction units and wherein the plural suction units are separately connected to the plural air chambers, the plural suction units connected to the plural air chambers are identical to one another, the plural suction units are driven by PWM control, and a duty of the suction unit connected to the air chamber where some of the suction holes are sealed by the medium to be recorded is set to be higher than a duty of the suction unit connected to the air chamber where all the suction holes are sealed by the medium to be recorded.