Optical information medium and method for printing on the surface of the medium
US5549952A · kind A · utility
12Cited by
7References
7Claims
0Family size
Assignees
Inventors
Key dates
| Filing date | Jun 11, 1993 |
| Grant date | Aug 27, 1996 |
| Priority date | — |
| Expiry date | Jun 11, 2013 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31855
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An optical information medium comprises an optically transparent substrate and a protective layer formed on the substrate for protecting a record portion so that information which is optically readable by means of a laser beam can be recorded. A hydrophilic film is formed at a side opposite to a side through which reproduction light of the optically transparent substrate is passed. The film has a hydrophilic surface on which an aqueous printing ink is fixable. Printing is possible on the hydrophilic surface by use of an ink jet printer. A method for printing on the hydrophilic surface is also described.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.