Radiation imagery chemistry: process – composition – or product th – Electric or magnetic imagery – e.g. – xerography,... – Post imaging process – finishing – or perfecting composition...
Reexamination Certificate
2006-02-14
2006-02-14
Chapman, Mark A. (Department: 1756)
Radiation imagery chemistry: process, composition, or product th
Electric or magnetic imagery, e.g., xerography,...
Post imaging process, finishing, or perfecting composition...
C430S108100, C430S108110, C430S108230, C430S124300, C430S126200, C430S010000, C430S137100, C430S037000, C399S320000
Reexamination Certificate
active
06998211
ABSTRACT:
A system and method for printing documents that are difficult to forge and that are easy to visually verify are disclosed. The system includes a colorant for printing an image on a surface of a document and a dye for forming a latent version of the image underneath the surface and a substrate that includes a migration agent for facilitating the migration of the dye through at least a portion of the substrate. The migration-enhancing agent may be coated onto a portion of the substrate or embedded within the substrate.
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Cooper John
Heilman Kevin L.
Nasser Nabil
Riley Michael R.
Chapman Mark A.
Troy Group, Inc.
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