Method for reducing short time-scale reciprocity failure effects of a microencapsulated acrylate system

摘要

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.