Browse Prior Art Database

Printer Journal Take Up Spool

IP.com Disclosure Number: IPCOM000106920D
Original Publication Date: 1992-Jan-01
Included in the Prior Art Database: 2005-Mar-21
Document File: 3 page(s) / 81K

Publishing Venue

IBM

Related People

Alexander, DE: AUTHOR [+2]

Abstract

Point-of-sale printers often use a take-up spool to rewind the journal paper after information has been printed. The journal paper must be threaded on the take-up spool properly prior to the start of any printing, a step which is often difficult because of the design of the take-up spool. Most spools are molded in a single operation, which is good for manufacturing economy but poor for usability.

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This is the abbreviated version, containing approximately 70% of the total text.

Printer Journal Take Up Spool

       Point-of-sale printers often use a take-up spool to
rewind the journal paper after information has been printed.  The
journal paper must be threaded on the take-up spool properly prior to
the start of any printing, a step which is often difficult because of
the design of the take-up spool.  Most spools are molded in a single
operation, which is good for manufacturing economy but poor for
usability.

      An effective approach is the use of a two-piece take-up spool,
details shown in Figs. 1, 2 and 3, molded from plastics of
contrasting colors to visually aid the operator in locating the
proper point for threading the paper.  By molding the retention tabs
and the spool from different colors, it is easy to find where to
thread the paper into the spool.

      Another major design feature of the two-part spool assembly is
the ability to mold a paper retention system into the individual
parts before they are assembled.  The retention tabs have generous
openings for threading and are easily cammed apart as the paper is
slid into the proper location.  This retention system allows the
operator to thread the paper under a retention tab without requiring
a reverse fold in the paper.

      However, the parts are designed to allow easy removal of the
wound paper from the spool by insuring that the paper does not press
on the retention tabs, creating a binding force.  Paper removal from
a take-up spool is often difficult in...