| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a sheet material post-processor constituted so that the interruption of the action of an image forming device occurring because the processing time of a sheet material ejected in a double-sided copying mode is secured can be eliminated and the productivity of the image forming device is prevented from being lowered in the double-sided copying mode. SOLUTION: The number of sheet materials capable of existing on a double- sided path extending over an image forming part 213 from an image forming part 213 through a carrying path 221, an inversion path 217, an intermediate tray 218 and a paper re-supply path 219 is 5 sheets (S1-S5). When the number of the same is defined as (n), the number of bins (m) of respective bin modules B1 and B2 is set to the minimum integral value satisfying a relational expression (m)>=n+1. That means, the number of bins of the respective bin modules B1 and B2 is set to 6 when the number of existing feasible sheet material on the double-sided path is 5.</p> |
