Delivery processing apparatus and image forming apparatus

Sheet feeding or delivering – Feeding – By means to convey sheet

Reexamination Certificate

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Details

C271S258010, C270S058090

Reexamination Certificate

active

07134659

ABSTRACT:
A delivery processing apparatus includes 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 for conveying the sheet on the alignment stage, a sheet processor for performing a prescribed processing to the sheet on the alignment stage, a delivery portion for stacking the sheets and a stacking amount detecting mechanism, including 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 mechanism operates in 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 mechanism are delivered to the delivery portion and operates in 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.

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