Negative tonable photosensitive system with improved speed

Details Negative tonable photosensitive system with improved speed Negative tonable photosensitive system with improved speed

G - Physics

03

C

96/169

G03C 1/73 (2006.01)

Patent

CA 1160883

TITLE PHOTOSENSITIVE REPRODUCTION ELEMENTS FOR FORMING NEGATIVE TONABLE IMAGES ABSTRACT OF THE INVENTION A nonsilver photosensitive reproduction element which comprise a support bearing a layer of a photosensitive composition which comprises (1) at least one thermoplastic binder, (2) a photosensitive system consisting essentially of (a) a hexaarylbiimidazole compound and (b) a dihydropyridine compound; and optionally (3) a plasticizer, and (4) a thioamide, thiolactam or thiocarbanilic acid ester of the formula: Image or Image (tautomeric form) wherein R1 and R2 are as defined. The photosensitive element is useful in preparing negative tonable images.

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