Patent ID: 7602513

Claim:
A paper conveying apparatus for conveying paper, comprising: first conveying means including a plurality of paired first driving rollers, the paired first driving rollers being arranged in a direction perpendicular to a paper conveying direction, the first conveying means being located at an upstream portion of a paper conveying path; and second conveying means including a plurality of paired second driving rollers, the paired second driving rollers being arranged at predetermined intervals away from the first conveying means, the second conveying means being located at a downstream portion of the paper conveying path with respect to the first conveying means, such that the plurality of paired second driving rollers grips the paper simultaneously with the plurality of paired first driving rollers with a time delay, and a predetermined tension is applied to the paper travelling along the paper conveying path by the first conveying means and the second conveying means, wherein each of the plurality of paired second driving rollers includes a driving roller which is rotationally driven and a driven roller which is trailingly rotated with paper being gripped between the driving and driven rollers, wherein a driven roller of one of the plurality of paired second driving roller is arranged on an upstream side along the paper conveying path as compared to a driven roller of another one of the plurality of paired second driving roller, such that the driven roller of said another of the plurality of paired second driving roller grips the paper simultaneously with the driven roller of said one of the plurality of paired driving roller with a time delay, and wherein a paper gripping pressure of said one of the plurality of paired second driving rollers is set to be lower than a paper gripping pressure of said another of the plurality of paired second driving roller.