Browse Prior Art Database

Continuous Form Perforation

IP.com Disclosure Number: IPCOM000107909D
Original Publication Date: 1992-Mar-01
Included in the Prior Art Database: 2005-Mar-22
Document File: 1 page(s) / 33K

Publishing Venue

IBM

Related People

Kuhn, RF: AUTHOR

Abstract

Disclosed is a method for perforating continuous forms at the folds to improve the forms ability to refold.

This text was extracted from an ASCII text file.
This is the abbreviated version, containing approximately 100% of the total text.

Continuous Form Perforation

      Disclosed is a method for perforating continuous forms at the
folds to improve the forms ability to refold.

      Horizontal perforations in continuous forms are currently
formed by slitting the paper using a single or double beveled blade.
A cross-sectional view of a horizontal perforation formed by slitting
is shown in Fig. 1.

      The forms path in printers results in unfolding the forms
during printing and refolding the forms in a stacker for easy
customer removal.

      Due to the expansion characteristic of paper and/or the
accuracy of the initial fold, the two halves of the slit form can
interfere during refolding.  This interference inhibits the forms
refolding ability.  In high speed continuous forms printers, this can
result in misfolds or stacker jams.

      By punching a slot of sufficient width in the form, these catch
points are eliminated.  A cross-sectional view of a horizontal
perforation formed by punching is shown in Fig. 2.

      Disclosed anonymously.