Imaging systems employing photosensitive microcapsules...

Details Imaging systems employing photosensitive microcapsules... Imaging systems employing photosensitive microcapsules...

G - Physics

03

C

96/150

G03C 1/73 (2006.01) G03C 1/00 (2006.01) G03C 5/00 (2006.01)

Patent

CA 1293407

Abstract Imaging systems employing photosensitive microcapsules having improved film speed are disclosed wherein the microcapsules contain a photosensitive composition in which the photoinitiator system includes a photobleachable sensitizer such as a 3-substituted coumarin compound; the invention is particularly useful in providing self-contained imaging systems which are sensitive at 390-500 nm but which can be photobleached to reduce background yellow; an imaging process including a photobleaching step following exposure and development is also disclosed.

491821

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