Index marking system
US5015849A · kind A · utility
43Cited by
12References
15Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Dec 14, 1989 |
| Grant date | May 14, 1991 |
| Priority date | — |
| Expiry date | Dec 14, 2009 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD06H1/00
- WIPO fieldHandling
- WIPO sectorMechanical engineering
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.