| 摘要 |
When the width of an envelope has sufficient margin for the width of a paper sheet, the aligning operation is skipped to improve productivity. As shown in FIG. 2, in an aligning apparatus 1 including an aligning unit 4 that aligns both side edges of the conveyed paper sheets, a difference value and a predetermined threshold value for use in an aligning operation execution determination are compared. The difference value is calculated by subtracting width dimension obtained from sheet size information of the paper sheet to be aligned from width dimension obtained from envelope size information of the envelope to enclose the paper sheet. The controller 7 controls not to execute the aligning operation if the difference value exceeds the predetermined threshold value.
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