Interlocking document security features using incompatible inks

Details Interlocking document security features using incompatible inks Interlocking document security features using incompatible inks

2006-07-26

2010-10-05

Ruthkosky, Mark (Department: 1785)

Stock material or miscellaneous articles

Structurally defined web or sheet

Discontinuous or differential coating, impregnation or bond

C428S204000, C428S916000, C283S072000, C283S074000, C283S075000, C283S077000, C283S085000, C283S092000, C283S094000, C283S901000

Reexamination Certificate

active

07807254

ABSTRACT:
A security feature for an identification document comprises a base document layer, including a first image printed with a covert ink, and a personalized image relating to a bearer of the document (such as a facial photo) printed over the first image. The personalized image is printed with an ink that is incompatible with the covert ink such that the first image becomes overt within the personalized image upon printing of the personalized image. This feature creates an interlocking relationship between the covert image, which may be pre-printed prior to personalization on card stock, and personalized information printed over the covert image. Variations of this feature can be made in which the first image is not covert, yet still creates an interlocking relationship due to ink incompatibilities. Further, the second image may depict information other than personal information.

REFERENCES:
patent: 5310222 (1994-05-01), Chatwin et al.
patent: 5492370 (1996-02-01), Chatwin et al.
patent: 5844230 (1998-12-01), Lalonde
patent: 6234537 (2001-05-01), Gutmann et al.
patent: 2003/0062421 (2003-04-01), Bloomberg et al.

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