Radiation imagery chemistry: process – composition – or product th – Radiation sensitive product – Two or more radiation-sensitive layers containing other than...
Patent
1997-08-14
1998-10-20
Huff, Mark F.
Radiation imagery chemistry: process, composition, or product th
Radiation sensitive product
Two or more radiation-sensitive layers containing other than...
430508, 430509, 430966, 430567, 430604, 430438, G03C 146, G03C 516, G03C 1035
Patent
active
058244590
ABSTRACT:
A dual-coated radiographic element is disclosed that is capable of simultaneously providing acceptable thoracic cavity imaging of both heart and lung anatomical features while employing a symmetrical coating format. The element allows reduced processing times while avoiding wet pressure sensitivity. This is achieved by reducing crossover to less than 5 percent using a crossover reducing dye in a polydispersed tabular grain emulsion layer coated nearest each major surface of the support. The tabular grain emulsion contains a rhodium dopant. A polydispersed outer tabular grain emulsion layer is coated over the polydispersed tabular grain emulsion coated nearest the support. Total hydrophilic colloid per side and the distribution of silver between the emulsion layers is controlled to allow processing in less than 45 seconds while avoiding wet pressure sensitivity.
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Eastman Kodak Company
Huff Mark F.
Thomas Carl O.
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