| 摘要 |
PROBLEM TO BE SOLVED: To eliminate a white band-like abnormal image in a print image by arranging a covering roller having characteristic values of Clark stiffness, a dynamic frictional coefficient of a contact surface with the roller and a frictional coefficient of a contact surface with a delivery roller and the delivery roller on a conveying route. SOLUTION: A conveying roller having Clark stiffness of 45 to 125 cm3/100, a dynamic frictional coefficient 1.5 to 3.2 of a contact surface with the roller and a frictional coefficient of 1.6 to 2.8 of a contact surface with a delivery roller and the delivery roller are arranged on a conveying route. An amount of a line feed mm is obtained by 0.0423×(N-3) [wherein N=3n+2, N: number of discharging nozzles, and n: an integer of 3 to 29], and the recording medium for an ink jet recorder is constituted. In an ink jet printer in which such a conveying roller and a delivery roller are arranged, its recording head discharges ink liquid droplets to an opposed recording area of a recording sheet as the head scans and moves and prints one line. |
