Appeal No. 96-3992
Application 08/356,618
canceled.
The claimed invention relates to an apparatus for applying offset preventing liquid to a contact
fuser for fixing powder images to a substrate. Included is a donor brush which is in contact with a
metering member and the contact fuser for conveying release agent material to the contact fuser.
Appellant states at page 5 of the specification that, to minimize the problem of oil accumulation, a
barrier layer is included intermediate an oil permeable sleeve and a nip forming layer of the donor brush
as illustrated in Figure 2 of the drawings.
Claim 1 is illustrative of the invention and reads as follows:
1. Apparatus for applying offset preventing liquid to one member of a contact fuser for fixing
powder images to a substrate, said apparatus comprising:
a supply of release agent material;
a release agent metering member supported for contact with said supply of release agent
material;
means for effecting movement of said metering member in an endless path at different surface
velocities;
donor brush supported in contact with said metering member and a fuser member of said
contact fuser for conveying release agent material from the former to the latter, said donor brush
structure comprising a rigid core, a nip forming layer adhered to said core and sleeve covering said nip
forming layer; and
a release agent barrier layer disposed intermediate said sleeve and said nip forming layer for
minimizing amount of release agent absorbed by said nip forming layer.
The Examiner relies on the following references:
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Last modified: November 3, 2007