Substrate handling system comprising a sheet processing machine and at least one alignment device, and method for aligning and/or loosening at least one partial stack of sheets

A substrate handling system comprising a sheet processing machine (01) and at least one alignment device (31), the at least one alignment device (31) comprising at least four stops (32;

• 33;
• 34), at least one stop (32) being configured as a front stop (32) and at least one stop (34) being configured as a rear stop (34), and at least two stops (33) being configured in each case as a lateral stop (33), the at least two lateral stops (33) being arranged opposite one another, the at least one front stop (32) and the at least one rear stop (34) being arranged opposite one another, the alignment device (31) comprising at least one support element (41), the at least one support element (41) being configured as a propping element for propping at least one partial stack of sheets in the alignment device (31), characterized in that a first one of the at least two lateral stops (33) comprises at least one respective support element (41), a second one of the at least two lateral stops (33) comprises at least one respective support element (41), and the at least one rear stop (34) comprises at least one respective support element (41), that the at least one respective support element (41) in each case has at least two positions, that the at least one respective support element (41), in a first position has a first distance, and in a second position has a second distance, between its tip and the first and/or second lateral stop (33) comprising the at least one respective support element (41) or the rear stop (34) comprising the at least one respective support element (41), and that the first distance in the first position is greater than the second distance in the second position.