Multi-position collation system with retracting guides including pre-compiler

A system for collating a plurality of media comprising:

• a compiler comprising a first position and a second position;
• a first bin arranged elevationally lower than the first position;
• a second bin arranged elevationally lower than the second position and adjacent to the first bin;
• a collated stack receiver arranged proximate the second bin opposite the first bin;
• first, second and third guides, the first and second guides positioned on opposing sides of the first bin, and the second and third guides positioned on opposing sides of the second bin;
• a movable wall arranged generally perpendicular relative to the first, second and third guides, the movable wall forming a side of the first and second positions, the movable wall and the first, second and third guides forming three sides of the first and second bins, the movable wall is translatable in a process direction;
• and,
• a pusher,
• wherein a first portion of the plurality of media is deposited in the first position and a second portion of the plurality of media is deposited in the second position, the compiler temporarily holds the first and second portions of the plurality of media, and upon completion of depositing the plurality of media in the compiler, the compiler moves the first portion of the plurality of media to the first bin and the second portion of the plurality of media to the second bin;
• wherein when the first, second and third guides are positioned in non-retracted locations, the first portion of the plurality of media is deposited in the first bin and the second portion of the plurality of media is deposited in the second bin, and when the first, second and third guides are positioned in retracted locations, the pusher moves the first portion to the second bin vertically above the second portion to form a first combined set and moves the first combined set to the collated stack receiver, and
• wherein a location of the movable wall is varied based on characteristics of the plurality of media.