Appeal No. 1997-1537
Application No. 08/290,116
The subject matter on appeal relates to a sealed package
of at least two sheets of an imaging element characterized in
that the package contains between each sheet of the imaging
element a paper spacer containing less than 20 ppm by weight
of formaldehyde and having a pH of less than 9. This appealed
subject matter is adequately illustrated by independent claim
3 which reads as follows:
3. A sealed package of at least two sheets of an imaging
element in a packaging material, said imaging element
comprising in the order given (i) a hydrophilic base, (ii) an
image receiving layer containing physical development nuclei,
(iii) an intermediate layer comprising a non-proteinic
hydrophilic film-forming polymer or hydrophobic polymer beads
having an average diameter not lower than 0.2 Fm and having
been prepared by polymerization of an ethylenically
unsaturated monomer, and (iv) a photosensitive layer
containing a silver halide emulsion being in water permeable
relationship with said image receiving layer, characterized in
that the surrounding of the imaging element in such a package
has at 22EC a relative humidity between 20% and 50% and that
said package contains between each sheet of the imaging
element a paper spacer having a weight of more than 15 g/m ,2
containing less than 20 ppm by weight of formaldehyde and
having a pH of less than 9.
The references relied upon by the examiner as evidence of
obviousness are:
Sewall 3,561,966 Feb. 9, 1971
Fessenden 3,645,388 Feb. 29,
1972
Asano et al. (Asano) 3,652,278 Mar. 28, 1972
Akao (Akao ‘906) 4,784,906 Nov. 15,
1988
2
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