Process and apparatus for applying authenticating coding to valu

Details Process and apparatus for applying authenticating coding to valu Process and apparatus for applying authenticating coding to valu

1986-10-10

1988-04-26

Powell, William A.

Adhesive bonding and miscellaneous chemical manufacture

Delaminating processes adapted for specified product

Delaminating in preparation for post processing recycling step

156654, 156345, 219121LJ, 219121LW, 219121LM, 427 531, 427228, 427308, 427326, B44C 122, C03C 1500, C03C 2506

Patent

active

047402695

ABSTRACT:
In the process according to our invention authenticating (code) marks are provided on paper, particularly a security or other financial instrument, by contacting laser radiation from a laser light source on the paper to form the authenticating marks. The objects of our invention are attained with an apparatus equipped with a pivotable mirror device which allows the laser radiation to be directed on sheets of paper arranged transverse to the transport direction on a paper sheet. A preservative medium can be used to coat and protect the marks particularly from mechanical abrasion.

REFERENCES:
patent: 3396401 (1968-08-01), Nonomura
patent: 4507346 (1985-03-01), Maurer et al.
Harris et al., "Thermal Printer", IBM Tech. Disc. Bulletin, vol. 15, No. 1, Jun. 1972, pp. 213-214.

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