Transfer sheets for thermal transfer recording
US4820685A · kind A · utility
Inventor
Key dates
| Filing date | Jan 21, 1988 |
| Grant date | Apr 11, 1989 |
| Priority date | — |
| Expiry date | Jan 21, 2008 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31786
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A transfer sheet having on a base film a color material layer containing a quinophthalone series dye of formula (I) and/or a quinophthalone series dye of formula (II), which is used for a sublimation type thermal transfer system: ##STR1## wherein X represents a hydrogen atom or a halogen atom; R.sup.0 represents an alkyl group, an alkoxyalkyl group which may be substituted, an aralkyloxyalkyl group which may be substituted, an allyloxyalkyl group which may be substituted, an aryloxyalkyl group, a tetrahydrofurfuryl group, a furfuryl group, a cycloalkyl group, an allyl group, or an aralkyl group; Y represents a hydrogen atom or a halogen atom; and R.sup.1 and R.sup.2 represent a hydrogen atom, an alkyl group, an alkoxyalkyl group, a cycloalkyl group, an allyl group, an aryl group which may be substituted, an aryl group, an aralkyl group, a furfuryl group, a tetrahydrofurfuryl group, or a hydroxyalkyl group.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.