Delivery Processing Apparatus And Image Forming Apparatus

摘要

The present invention relates to a delivery processing apparatus comprising an alignment stage (4), an aligning means having an alignment member (6) operable to align a sheet on the alignment stage and to escape to a home position during a non-alignment period, a conveying means (3) for conveying the sheet on the alignment stage, a sheet processing means for performing a prescribed processing to the sheet on the alignment stage, a delivery portion (7) for stacking the sheets and a stacking amount detecting means (10) having a detection member selectively moving to a detection position and a non-detection position at a region overlapping an operation region of the alignment member to detect the stacking amount of the sheet delivered to the delivery portion.The stacking amount detecting means (10) has a first stacking amount detection mode for detecting a stacking amount of the sheets stacked at the delivery portion during a first delivery mode in which the sheets processed by the sheet processing means are delivered to the delivery portion and a second stacking amount detection mode for detecting a stacking amount of the sheets stacked at the delivery portion during a second delivery mode for delivering the sheet to the delivery portion without executing the alignment operation. <IMAGE>