System for directing a leading edge of continuous form paper onto a stack

A fold detector that detects folds in a pre-folded continuous form moving along a transport path, comprising:

• at least one wall placed along the transport path, said at least one wall forming a corner that changes a direction of the continuous form and forms a detectable clearance, depending on predetermined stiffnesses of the continuous form and the folds, between said at least one wall and the continuous form, an opening being formed through said at least one wall at the corner, and wherein said at least one wall comprises two substantially straight walls that intersect to form an angled corner, said angled corner changing a direction of the continuous form so that said detectable clearance forms between one of said substantially straight walls and the continuous form when no detectable fold is at said angled corner and said detectable clearance reduces when a detectable fold is at said angled corner;
• a media detection sensor that senses said continuous form at said opening, said media detection sensor being responsive to the detectable clearance to sense the folds in the continuous form, said media detection sensor being responsive to said reducing of said detectable clearance to sense the folds in the continuous form, and wherein said media detection sensor comprises a limit switch having a movable lever emerging from said opening at said one of said substantially straight walls, so that said movable lever is depressed and said limit switch activated when said detectable clearance is reduced and said movable lever is released and said limit switch deactivated when said detectable clearance is formed.