Radiation imagery chemistry: process – composition – or product th – Dye image from radiation sensitive dye or dye former by dry...
Reexamination Certificate
2003-09-05
2008-12-09
Walke, Amanda C. (Department: 1795)
Radiation imagery chemistry: process, composition, or product th
Dye image from radiation sensitive dye or dye former by dry...
C430S270100
Reexamination Certificate
active
07462443
ABSTRACT:
Compositions and systems for labeling substrates, such as optical disks, using leuco dye-containing coating compositions are described. The composition can comprise a color forming composition, an electromagnetic radiation absorber, and a stabilizing agent. The color forming composition can include a leuco dye, a hexaarylbiimidazole activator, and an acid-generating source. The absorber can be admixed with or in thermal contact with the color forming composition. The stabilizing agent can be configured for protecting the leuco dye upon exposure to ambient light, wherein the stabilizing agent comprises a diarylguanidine dye salt. The coating composition can be optimized for development using electromagnetic radiation having a frequency from about 760 nm and 800 nm.
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Dessauer Rolf
Willard Randall Orson
Hewlett--Packard Development Company, L.P.
Walke Amanda C.
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