Index marking system

Details Index marking system Index marking system

1989-12-14

1991-05-14

Berman, Jack I.

Radiant energy

Radiation tracer methods

250308, 250548, G01N 2131

Patent

active

050158490

ABSTRACT:
A detection system is disclosed for detecting the presence of a marking material placed on a textile substrate prior to a series of dyeing and finishing steps. Following such steps, the substrate carrying the marking material is illuminated by light having a preferred wavelength of about 900 nanometers. The light is preferably absorbed by the marking material, thereby reducing the amount of light reflected from the substrate carrying the marking material and triggering an alarm. In a preferred embodiment, the marking material contains carbon particles.

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