Olu, If I may present one more recent reason that I will remain long.
Patent #18 in 14 months
United States Patent 5,786,129
Ellis Jul. 28, 1998
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Laser-imageable recording constructions utilizing controlled,
self-propagating exothermic chemical reaction mechanisms
Inventors: Ellis; Ernest (Harvard, MA).
Assignee: Presstek, Inc. (Hudson, NH).
Materials that undergo self-propagating exothermic
solid-solid reaction upon ignition by a heating source (e.g., a
laser) are used in the fabrication of recording constructions
such as lithographic printing plates, photomasks and
proofing sheets. A recording construction in accordance with
the invention may include at least one ignition layer
comprising at least two unreacted, solid chemical species
which, upon exposure to heat, combine exothermically to
form a final species that is physically disrupted; and a
substrate thereunder that is substantially unconsumed by heat
generated by the exothermic combination. To form a
lithographic printing plate, the ignition layer (or its topmost
component, or a surface layer thereover) and the substrate
exhibit different affinities for ink and/or an abhesive fluid
for ink.
28 Claims, 2 Drawing Figures |
