Updatable micrographic pocket data card
US4814594A · kind A · utility
51Cited by
8References
11Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jul 7, 1987 |
| Grant date | Mar 21, 1989 |
| Priority date | — |
| Expiry date | Jul 7, 2007 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S283/904
- WIPO fieldOther consumer goods
- WIPO sectorOther fields
Abstract
A strip of optical contrast laser recording material is disposed on the wallet-size card, and has laser written characters recorded thereon. The characters are formed by a plurality of pixels, similar in nature to the dots forming dot matrix characters, except that the pixels themselves are formed of spots. The spots are disposed in a geometric regular array and are usually written one column at a time until a complete pixel is formed. Machine readable and visually readable characters may be combined on a single data strip.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.