Radiation imagery chemistry: process – composition – or product th – Microcapsule – process – composition – or product
Patent
1987-06-24
1989-02-14
Brammer, Jack P.
Radiation imagery chemistry: process, composition, or product th
Microcapsule, process, composition, or product
430281, 430288, 430292, 430327, 430494, G03C 172
Patent
active
048046116
ABSTRACT:
The present invention provides a method for reducing short time-scale reciprocity failure effects of a photosensitive imaging sheet. The photosensitive imaging sheet comprises a substrate having a layer of microcapsules on one surface thereof. The microcapsules contain an internal phase of an acrylate monomer, photoinitiator, and color former. A portion of the microcapsules of the imaging sheet is image-wise exposed to high intensity light and then allowed to recover from the exposure. The exposure and recovery steps are repeated to form a latent image. By pulsing the light onto the photosensitive imaging sheet, the total exposure energy required per unit area is significantly reduced compared to the known short time-scale exposure method.
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Journal of Imaging Science, vol. 31, No. 1, 1987-"Oxidation Kinetics and Reciprocity Behavior in the Microencapsulated Acrylate Imaging Process", Jonathan S. Arney-pp. 27-30.
Brammer Jack P.
The Mead Corporation
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