Browse Prior Art Database

Combination Paper Feed and Cutter Drive

IP.com Disclosure Number: IPCOM000118594D
Original Publication Date: 1997-Apr-01
Included in the Prior Art Database: 2005-Apr-01
Document File: 4 page(s) / 110K

Publishing Venue

IBM

Related People

Harris, RH: AUTHOR [+3]

Abstract

Point-of-Sale printers that have receipt cutters utilize a dedicated motor to drive the cutter. These printers usually have a dedicated motor to feed the paper. A printer that has separate motors is considerably more expensive than a printer that has one motor to drive both the cutter and the paper feed. This invention shows how one motor can drive both the cutter and the paper feed.

This text was extracted from an ASCII text file.
This is the abbreviated version, containing approximately 52% of the total text.

Combination Paper Feed and Cutter Drive

      Point-of-Sale printers that have receipt cutters utilize a
dedicated motor to drive the cutter.  These printers usually have a
dedicated motor to feed the paper.  A printer that has separate
motors is considerably more expensive than a printer that has one
motor to drive both the cutter and the paper feed.  This invention
shows how one motor can drive both the cutter and the paper feed.

Advantages of this invention are:
  o  The printer mechanism is less expensive.
  o  Electronic drive circuits require fewer drive circuits.
  o  Fewer drive circuits make the circuit care more reliable.
  o  The circuit card is less expensive.
  o  The mechanism to feed paper and cut receipts takes up less
      space.

      This invention consists of one d.c.  stepper motor, a gear
train, and two one-way clutches.  A thermal print mechanism and
scissors-type cutter embodiment are shown; however, this invention
could be used with any printing technology.  One direction of the
motor is used to feed the receipt paper and the other direction is
used to cut the receipt.

      Figs. 1 and 2 show the motor assembly and gear which drive
both the idler gear and the cutter clutch drive gear.  The idler gear
drives the platen gear which drives the thermal platen via the
thermal clutch assembly which is a one-way clutch (either a spring
clutch or a bearing clutch).  The thermal clutch assembly causes the
thermal platen to rotate only in one direction.  Paper is fed between
the thermal platen and print head when the thermal platen rotates.
The thermal print head assembly and stationary cutter blade a...