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US 4,308,342 AGranted
Dimensionally stabilized imaging element and method
AssigneeEastman Kodak Company
InventorsRaymond F. Limoges, Anthony A. Scribani, Robert J. Wilson
Life of this patent
Estimating the term…
Abstract
A thermally processable imaging element and method are disclosed, wherein dimensional changes after thermal processing for about 5 seconds at a temperature of about 125.degree. C., do not exceed .+-.0.03%. The imaging element features an amine-generating and an amine-responsive composition. The method features preheating the element prior to exposure to dimensionally stabilize it.
Claims5
A thermally processable photographic imaging element comprising
- a polymeric film support having dimensional changes that are no greater than .+-.0.1% in width and length when heated in an uncoated state for about 5 seconds at a temperature of about 125.degree. C.,
- and on the support, at least one radiation-sensitive layer comprising a radiation-responsive, amine-generating composition that includes a reducible cobalt(III) complex containing releasable amine ligands, and an amine-responsive dye precursor,
- said element having as an essential property, an overall thermal-reaction hysteresis that will provide a dimensional change of no greater than .+-.0.03% in width or length when processed by heating for about 5 seconds at a temperature of about 125.degree. C.
A thermally processable photographic imaging element comprising
- a polymeric film support having dimensional changes that are no greater than .+-.0.1% in width and length when heated in an uncoated state for about 5 seconds at a temperature of about 125.degree. C.,
- and on the support, at least one radiation-sensitive layer comprising a radiation-responsive, amine-generating composition that includes a reducible cobalt(III) complex containing releasable amine ligands, and an amine-responsive dye precursor,
- said element having as an essential property, an overall thermal-reaction hysteresis that provides a dimensional change of no greater than .+-.0.03% in width or length when processed by heating for about 5 seconds at a temperature of about 125.degree. C., said hysteresis being the result of heating said element, prior to development of an image, to a temperature of between about 100.degree. C. and about 140.degree. C. for a time of between about 2 and about 20 seconds.
Dependencies are inferred from the claim text.