Method for improving the readability of composite images
US6948660B2 · kind B2 · utility
23Cited by
15References
24Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 15, 2003 |
| Grant date | Sep 27, 2005 |
| Priority date | — |
| Expiry date | Oct 16, 2023 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG07B2017/00782
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
A method for improving the readability of composite images by determining available areas on a document where no text or graphics will be printed in visible ink and printing one or more 2-D bar code with invisible ink at a size pre-determined based on the available areas. The one or more auxiliary 2-D bar codes are printed in luminescent ink, either invisible or lightly colored when viewed under white light.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.