Appeal 2007-2677
Application 10/622,229
In a typical inkjet recording or printing system, ink droplets are
ejected from a nozzle at high speed toward a recording element or medium
to produce an image on the medium. Specification 1:9-11.
The ink droplets, or recording liquid, generally comprise a recording
agent, such as a dye or pigment, and a large amount of solvent.
Specification 1:11-13.
An inkjet recording element typically comprises a support having an
ink-receiving or image-receiving layer on at least one surface thereof.
Specification 1:16-17.
An important characteristic of inkjet recording elements is the need to
dry quickly after printing. To this end, porous recording elements have been
developed which provide nearly instantaneous drying. For example, a
porous recording element can be manufactured by applying a coating of a
particulate-containing suspension on a support. Specification 1:20-25.
Another important characteristic of inkjet recording elements is that
they should exhibit high gloss so that images printed on them appear vivid
and bright. To this end, the precise size and shape of the particulates are
important since it is desirable to achieve both high porosity and high gloss in
the coated layer. Large particles (greater than about 500 nm) result in
coatings with high porosity but low gloss, whereas small particles (less than
about 100 nm) result in low porosity but high gloss. Specification 1:26-2:2.
2. Appellants’ invention
According to the Appellants’ Specification, there remains a need for
inkjet recording elements that, when printed with dye-based inks, provide
images which dry very quickly, have high gloss, and have excellent
resistance to atmospheric image fade. Specification 2:28-30.
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