Thermal transfer sheet and image formation method
US8425709B2 · kind B2 · utility
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3Claims
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Key dates
| Filing date | Mar 29, 2010 |
| Grant date | Apr 23, 2013 |
| Priority date | — |
| Expiry date | Dec 17, 2030 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB41M2205/02
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A thermal transfer sheet having a subbing layer and a dye layer in this order on a substrate film, wherein the subbing layer contains colloidal silica or colloidal alumina, and the dye layer contains a polyvinyl acetal resin having an acetacetal group in an amount of from 3.0 to 30.0 molar times the butyral group therein, and a dye of the following formula (1):wherein A represents a phenylene group; R1 and R2 represent a hydrogen atom, an alkyl group, or an aryl group; R3 represents an amino group, an alkoxy group, or an aryloxy group; and R4 represents an alkyl group, or an aryl group.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.