Method for document marking and recognition

Details Method for document marking and recognition Method for document marking and recognition

1995-08-21

1999-08-10

Dote, Janis L.

Radiation imagery chemistry: process, composition, or product th

Electric or magnetic imagery, e.g., xerography,...

Post imaging process, finishing, or perfecting composition...

430110, 430115, 430117, 430126, 427 7, 427 8, 427256, 427265, 427288, 427469, 427421, 380 51, 380 54, 380 55, 283 85, 283901, 283902, 106 3114, 106 3143, 106 3147, 106 3175, 106 3177, G03G 1308, G03G 1310

Patent

active

059357550

ABSTRACT:
Disclosed is a process which comprises (a) applying to a recording sheet a marking material comprising a Raman-detectable component which, when irradiated with monochromatic radiation, exhibits a detectable Raman spectrum, thereby forming a mark on the recording sheet; (b) irradiating the mark on the recording sheet with monochromatic radiation; and (c) measuring the Raman spectrum of radiation scattered from the mark when the mark is irradiated with monochromatic radiation.

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patent: 5324567 (1994-06-01), Bratchley et al.
patent: 5395432 (1995-03-01), Nelson et al.
patent: 5455673 (1995-10-01), Alsmeyer et al.
patent: 5470683 (1995-11-01), Inaishi

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