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Browse Prior Art Database

Dual-Dwell Fuser Cams

IP.com Disclosure Number: IPCOM000122215D
Original Publication Date: 1991-Nov-01
Included in the Prior Art Database: 2005-Apr-04
Document File: 2 page(s) / 45K

Publishing Venue

IBM

Related People

Gunnell, RW: AUTHOR [+2]

Abstract

In an EP printer utilizing hot roll fusing with reference edge paper- path alignment, the load balancing in the fuser assembly consists of a compromise for the different paper sizes that the printer must accommodate. This invention provides a cam design that allows the fuser loads to be customized for the two primary paper sizes and eliminates the need for compromise.

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Dual-Dwell Fuser Cams

      In an EP printer utilizing hot roll fusing with reference
edge paper- path alignment, the load balancing in the fuser assembly
consists of a compromise for the different paper sizes that the
printer must accommodate.  This invention provides a cam design that
allows the fuser loads to be customized for the two primary paper
sizes and eliminates the need for compromise.

      The cam profiles are shown in Figures 1 and 2.  Figure 1 shows
the profile that would be used at the reference edge side of the
fuser.  (This is the side of the fuser where the paper edge location
is independent of the paper size.)  As can be seen, there is a single
dwell position for this cam; hence, the load provided by this cam
will be constant for all paper sizes.

      Figure 2 shows the profile for the cam on the non-reference
edge side of the fuser.  It can be seen from this profile that there
are two dwell positions for this cam.  This dual-dwell feature on the
cam allows for a customization of the loads required for fusing of
the two primary paper sizes.  This customization of the loads will
result in two positive benefits to the fuser: 1) the quality of the
fusing will improve for both paper sizes, and 2) the life of the hot
roll will increase.  Both of these benefits are accomplished because
of the elimination of the "compromise" required to have a single load
accommodate both paper sizes.