Recording sheet finishing apparatus

摘要

A recording sheet finisher in use with an image forming apparatus such as a copier. The recording sheet finisher includes a stacker for stacking recording sheets, an aligning member for aligning the bundle of the recording sheets on the stacker, a counter for counting a number of the recording sheets bundled on the stacker, and a controller for controlling the aligning member so that the aligning member aligns the bundle of recording sheets after a first predetermined time period after the last one of the recording sheets is conveyed onto the other ones when the number of recording sheets bundled on the stacker is 25 or more, and aligns the bundle after a second predetermined time period when the number is not less than 25.