Dye transfer type thermal printing sheets
US4985396A · kind A · utility
7Cited by
4References
2Claims
0Family size
Assignees
Inventors
Key dates
| Filing date | Dec 22, 1988 |
| Grant date | Jan 15, 1991 |
| Priority date | — |
| Expiry date | Dec 22, 2008 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S428/914
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
The present invention provides a dye transfer type thermal printing sheet which can give a color record image excellent in color reproducibility and weather resistance with middle shade including black and sufficiently saturated density. This printing sheet comprising a substrate on which are arranged, in face-sequence, coloring material layers which are different in hue and contain either of at least one dye represented by the formula (I), at least one dye represented by the formual (II) and at least one dye represented by the formulas (III)-(VI).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.