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Fuser Hot Roll Cleaning Blade

IP.com Disclosure Number: IPCOM000100853D
Original Publication Date: 1990-Jun-01
Included in the Prior Art Database: 2005-Mar-16
Document File: 2 page(s) / 55K

Publishing Venue

IBM

Related People

Gunnell, RW: AUTHOR [+2]

Abstract

Oil contamination of the paper is a major print quality problem for printers/copiers that use oil as a release agent for the fuser hot roll. Common in the industry today is the practice of alerting the user to the defect and suggesting that objectionable output be discarded. This design greatly improves oil contamination performance of a fuser and eliminates the need to alert the user to potential defects.

This text was extracted from an ASCII text file.
This is the abbreviated version, containing approximately 68% of the total text.

Fuser Hot Roll Cleaning Blade

       Oil contamination of the paper is a major print quality
problem for printers/copiers that use oil as a release agent for the
fuser hot roll.  Common in the industry today is the practice of
alerting the user to the defect and suggesting that objectionable
output be discarded.  This design greatly improves oil contamination
performance of a fuser and eliminates the need to alert the user to
potential defects.

      The cleaning blade design is shown in the figure.  It consists
of a stainless steel blade .006-inch thick, which rides against the
hot roll surface, as shown.  The blade is mounted such that the angle
of attack between the tip of the blade and the hot roll surface is
approximately 4 degrees. The radial force between the tip of the
blade and the hot roll surface is approximately 18 grams/cm.  The
cleaning blade mounting is such that the blade contacts the hot roll
surface uniformly over the entire length of the roll.

      The direction of rotation of the fuser rolls is also shown in
the figure.  From the figure it can be seen that any contamination
that is present on the surface of the roll prior to paper entering
the fuser will be removed by the cleaning blade.  The angle of attack
and the loading force are balanced such that sufficient oil is
allowed to pass under the blade to affect toner release, but large
quantities of oil (such as would cause output defects) are not
allowed to pass through.  These l...