Data carrier and method for producting it
US5958528A · kind A · utility
23Cited by
0References
19Claims
0Family size
Inventor
Key dates
| Filing date | Dec 19, 1995 |
| Grant date | Sep 28, 1999 |
| Priority date | — |
| Expiry date | Dec 19, 2015 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/24934
- WIPO fieldOther consumer goods
- WIPO sectorOther fields
Abstract
The invention relates to a data carrier, such as an identity card, credit card or the like, with at least one plastic layer having first diffusely light-scattering properties at least in a partial area due to its surface quality. In this area information is provided by means of a laser in the form of local changes of surface quality which have second diffusely light-scattering properties so that the information is readable at least at a certain viewing angle but has no color contrast with its surroundings.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.