Thermal transfer ink sheet, ink cartridge, coating composition for dye layer of thermal transfer ink sheet, and thermal transfer recording method
US8124562B2 · kind B2 · utility
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Key dates
| Filing date | Aug 26, 2008 |
| Grant date | Feb 28, 2012 |
| Priority date | — |
| Expiry date | Sep 2, 2030 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08L2205/02
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A thermal transfer ink sheet having a dye layer containing a polyvinyl acetal modified with a compound of the formula [1] and a polyvinyl acetal modified with a compound of the formula [2]:wherein R1 represents a substituted alkyl group, etc; R2 represents H, etc;wherein R3 represents a linear hydrocarbon group, etc; R4 represents a hydrogen atom, etc.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.