| abstract |
system and method for producing safe toner-based images. a system and method for printing a secure document that is difficult to falsify and that can be readily easy to visually check is revealed. the system includes a dye to print an image on a document surface, a dye to form a latent version of the image under the surface, a substrate, and a migration agent to facilitate the migration of the dye through at least a portion of the substrate. the migration agent can be coated on a portion of the substrate or embedded in the substrate. an ink can serve as the migration agent, in which case, the ink contains a solute for the dye. |