Laser markable secure documents

Details Laser markable secure documents Laser markable secure documents

2007-10-30

2007-10-30

Le, Thien Minh (Department: 2876)

Registers

Records

Laminated

C235S492000

Reexamination Certificate

active

11120760

ABSTRACT:
Documents embodying the invention include a sandwich-like structure comprised of a core layer on which information may be printed using inks, a buffer layer bonded to each surface of the core layer for protecting the printed information and a laser reactive layer on, or in, which information can be written with a laser, bonded to each one of the buffer layers. The core layer may be formed of PVC (polyvinyl chloride) or PC (poly carbonate) material or any other suitable material on which information can be printed. The buffer layer may be formed of amorphous polyester material (e.g., PETG) or any other suitable material which can readily bond to the core layer and the laser reactive layer. The laser reactive layer may be polycarbonate (PC) or may be any other suitable plastic material (e.g., PVC, PET, PC, etc.) which includes a chemical which can react with a laser to produce desirable markings.

REFERENCES:
patent: 2005/0003297 (2005-01-01), Labrec
patent: 2005/0040243 (2005-02-01), Bi et al.
patent: 2005/0095408 (2005-05-01), LaBrec et al.

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