Patent ID: 7478897

Claim:
An ink jet printer, comprising: a print medium transfering device that transfers a print medium; an ink jet head having an ink discharging plane, wherein a plurality of ink openings for discharging ink toward the print medium being transferred by the print medium transferring device and a liquid opening for discharging liquid are formed on the ink discharging plane, the ink openings are closer to one end of the ink discharging plane than the liquid opening is, the liquid opening is closer to the other end of the ink discharging plane than the ink openings are, the ink openings are formed at positions where the ink openings face the print medium being transferred by the print medium transferring device, the liquid opening is formed at a position where the liquid opening does not face the print medium being transferred by print medium transferring device, and the ink jet head is located at a predetermined position and does not move from the predetermined position when the ink openings discharge the ink toward the print medium; a wiper that wipes the ink discharging plane of the ink jet head; and a wiper transferring device that transfers the wiper such that the wiper wipes the ink discharging plane from a beginning position located at the other end side of the ink discharging plane to a finishing position located at the one end side of the ink discharging plane, wherein the ink jet head is located at the predetermined position and does not move from the predetermined position when the wiper transferring device transfers the wiper such that the wiper wipes the ink discharging plane from the beginning position to the finishing position, wherein the liquid discharged from the liquid opening adheres to the wiper when the wiper wipes an area where the liquid opening is formed, and a distance between the liquid opening and an ink opening, among the plurality of ink openings on the discharging plate, located at the most upstream position of the wiping direction of the wiper is longer than a distance between the two adjacent ink openings.