Browse Prior Art Database

Paper Cutter With System Controlled Partial Cut Feature

IP.com Disclosure Number: IPCOM000121700D
Original Publication Date: 1991-Sep-01
Included in the Prior Art Database: 2005-Apr-03
Document File: 2 page(s) / 64K

Publishing Venue

IBM

Related People

Harris, RH: AUTHOR [+3]

Abstract

Paper cutters for point-of-sale printers typically offer a complete or a partial cut selectable by mechanically setting a lever or making a mechanical adjustment. This article provides this option under system control. This eliminates mechanical adjustments in the printer and eases the printer assembly and set-up procedure.

This text was extracted from an ASCII text file.
This is the abbreviated version, containing approximately 75% of the total text.

Paper Cutter With System Controlled Partial Cut Feature

      Paper cutters for point-of-sale printers typically offer
a complete or a partial cut selectable by mechanically setting a
lever or making a mechanical adjustment.  This article provides this
option under system control.  This eliminates mechanical adjustments
in the printer and eases the printer assembly and set-up procedure.

      The figure shows the disclosed cutter and drive mechanism.  The
cutter consists of two rectangular hardened-steel blades set at about
90 degrees relative to each other.  One blade is oriented
perpendicular to the paper (stationary blade) to be cut, and the
other (rotating blade) is approximately parallel to the paper.  The
rotating blade rotates about an axis near the edge furthest from the
stationary blade.  Rotation of the rotating blade causes a shear
point to traverse across the paper to make the cut. The stationary
blade pivots slightly and is held against the rotating blade by a
spring.  This insures compliance as the rotating blade rotates.

      The drive consists of a commonly used DC stepper motor, a
compound gear, and a rack which pushes and pulls an actuation lever
on the cutter.  There is no return spring on the cutter for the DC
stepper motor to overcome.  This allows all of the torque to be used
to cut paper.  The DC stepper motor drives the cutter to make the cut
and reverses to open the cutter.

      A partial cut is made by driving the DC...