Imaging medium and process

Details Imaging medium and process Imaging medium and process

G - Physics

03

C

G03C 1/73 (2006.01) B41M 5/30 (2006.01) C07C 49/593 (2006.01) G03F 7/004 (2006.01)

Patent

CA 2147633

Acid can be generated by exposing a superacid precursor to actinic radiation effective to generate superacid from the su- peracid precursor and heating the superacid in admixture with a secondary acid generator capable of undergoing thermal decom- position to produce a secondary acid. The superacid catalyzes decomposition of the secondary acid generator, thus increasing the quantity of strong acid present in the medium. The resultant secondary acid can be used to effect a color change in an acid-sensi- tive material, so providing an imaging process. The secondary acid generator is desirably a squaric acid derivative or an oxalic acid derivative.

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