Roughness elimination by control of strength of polymer sheet in relation to base paper
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United States of America Patent
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Mar 30, 1999
Grant Date -
N/A
app pub date -
May 23, 1997
filing date -
May 23, 1997
priority date (Note) -
Expired
status (Latency Note)
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Abstract
The invention relates to a photographic element comprising a paper base, at least one photosensitive silver halide layer, a biaxially oriented polymer sheet between said paper base and said silver halide layer, wherein said polymer sheet has a thickness of between 13 microns and 65 microns and a Young's modulus of between 700 and 5200 MPa wherein said base paper has a Young's modulus between 1380 MPa and 13800 MPa, a thickness between 75 microns and 200 microns, and an average roughness on the emulsion side of between 0.18 and 0.68 microns and wherein the ratio of thickness between said polymer sheet and said base paper is between 0.1 and 0.5.
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