Recording materials and method for manufacturing said materials coated from hydrophilic layers having no gelatin or low amounts of gelatin
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United States of America Patent
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Nov 23, 1999
Grant Date -
N/A
app pub date -
Jun 2, 1997
filing date -
Jun 13, 1996
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Expired
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Abstract
Recording materials and a method of manufacturing said materials by coating hydrophilic colloidal layer compositions on a support by slide-hopper or curtain-coating techniques, followed by drying, said materials comprising a support and one or more light-sensitive and/or heat-sensitive layer(s) having a hydrophilic colloidal coating composition comprising no gelatin(in the case of (photo)thermographic materials) or gelatin in low amounts in order to provide a ratio by weight of gelatin to silver halide expressed as an equivalent amount of silver nitrate in the range from 0.05 to 0.4 (in the case of a light-sensitive silver halide photographic material) and thickening agents composed of synthetic clay and anionic macromolecular polyelectrolytes and wherein said synthetic clay is present in an amount of at least 85% by weight versus a total amount of thickening agents.
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