Heat transfer sheet
AssigneeDai Nippon Insatsu Kabushiki Kaisha
InventorNoritaka N. E. Egashira
Life of this patent
Estimating the term…
Abstract
A heat transfer sheet having a dye layer including a dye and binder, provided on a substrate film, said dye layer contains a compound represented by the following formula (I): R=[(CH.sub.2).sub.1 --X--(CH.sub.2).sub.m --CH.sub.3 ].sub.2 (I) wherein R is a phenylene group or a napthylene group or an alkylene group which may also have substituent; X is a linking group such as --NHCOO-- group, --NHCONH-- group, --COO-- group, --CONH group, --NHCO group, --NHSO.sub.2 -- group, --OOC-- groups, --OOCNH group, --O.O.sub.2 S group-, --SO.sub.2 NH-- group, --SO.sub.2.O group, --O-- group, --NH-- group, --S-- group; and l and m are integers of 1 to 30.
Claims4
A heat transfer sheet comprising:
- substrate film;
- a dye layer provided on said substrate film, said dye layer comprising a dye, a binder and a sensitizer present in an amount of 1 to 100 parts by weight per 100 parts by weight of said binder, said sensitizer comprising a low molecular weight substance having a melting point from 50.degree. to 150.degree. C.;
- wherein said sensitizer and said binder have functional groups substantially bonded to each other.
Dependencies are inferred from the claim text.