Patent ID: 7134659
Filing Date: 2006-11-14
Classification: B42C,B65H

Abstract:
1. A delivery processing apparatus comprising: an alignment stage; an aligning mechanism including an alignment member operable to align a sheet on the alignment stage and to escape to a home position during a non-alignment period; a sheet conveyor, which conveys the sheet on the alignment stage; a sheet processor, which performs a prescribed processing of the sheet on the alignment stage; a delivery portion, which stacks the sheets; and a stacking amount detecting mechanism including a detection member selectively moving to a detection position and a non-detection position to detect a stacking amount of a sheet delivered to the delivery portion at a portion overlapping an operation region of the alignment member, wherein the stacking amount detecting mechanism operates in a first stacking amount detection mode, which detects a stacking amount of the sheets stacked at the delivery portion during a first delivery mode in which the sheets processed by the sheet processor are delivered to the delivery portion, and operates in a second stacking amount detection mode, which detects a stacking amount of the sheets stacked at the delivery portion during a second delivery mode in which the sheets are delivered to the delivery portion without executing the alignment operation, wherein in the first stacking amount detection mode a period to confirm the stacking amount is set shorter than a shortest period for moving the detection member from the detecting position to the non-detection position between a sheet processing job and a subsequent sheet processing job, and wherein in the second stacking amount detection mode, a fully stacking confirmation period for judging as to whether the stacking amount is full is set longer than a longest period for passing a sheet at the detection member.