Signature booklet maker with a modified fold blade and a trim wa

Details Signature booklet maker with a modified fold blade and a trim wa Signature booklet maker with a modified fold blade and a trim wa

1994-09-09

1995-08-29

Kisliuk, Bruce M.

Manufacturing container or tube from paper; or other manufacturi

Bending

Folding

493468, 493437, B65H 4518

Patent

active

054455928

ABSTRACT:
A signature booklet maker (SBM) finishing apparatus for an image producing device includes a modified fold blade having a plurality of contacting teeth spaced part by a predetermined distance. The contacting teeth further include a predetermined contact surface width and a predetermined thickness. The grind direction of the teeth is specified to reduce inside sheet drag during folding. The spaced teeth are adapted drive the stitched signature set in a folding unit without contacting the stitches, thereby eliminating fold skew and inside sheet marking. Moreover, the fold blade has a predetermined hardness to ensure that the blade is not damaged during folding. The SBM further includes a trim waste elimination device and knife guard to prevent booklet trimmings from migrating throughout the trimmer unit. The knife guard eliminates the safety hazard caused by the blade in the resting position and guides air from an air blower to force booklet trimmings into a waste chute. A discontinuity bracket on the blade reduces the surface area for trimmings to become adhered to the blade by static electricity. The apparatus provides for a substantial increase in the quality of the output and in the aesthetic appearance of the booklet.

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