| 摘要 |
PURPOSE:To perform an appropriate curl correction, by reducing the angle of unwinding of paper from a roll depending on the decrease in the diameter of the roll to heighten an unwinding effect. CONSTITUTION:When paper feed rollers 4 are rotating, a solenoid 24 is energized by a control section to swing a lever 21 clockwise to bring a curl correction roller 22 into contact with a roll of paper 1. The paper is delivered out of the roll while being in contact with the peripheral surface of the curl correction roller 22 within an angle theta, so that the paper is curled oppositely to its original curl. As a result, the curl of the paper is corrected. Although the diameter of the roll of the paper 1 is decreasing, the solenoid 24 is kept energized to bring the curl correction roller 22 into contact with the unwound paper in opposition to a spring 26. The curl of the paper is thus corrected depending on the decrease in the diameter of the roll. |
