| http://www.w3.org/ns/prov#value | - The present invention relates to an image forming apparatus such as a copier or printer, or a sheet processing device such as a sorter or a finisher, which is disposed in the image forming device, and especially relates to a sheet processing device in which, apart from stacking means such as a stacking part on which sheets can be stacked, support means such as a sheet holding part for being capabl
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