A multicolor thermal recording medium, characterized in that at least one dye precursor and a polymer of a polyisocyanate component constitute composite fine particles and that the polyisocyanate component comprises 4,4'-diisocyanato-3,3' -dimethyl-1,1'-biphenyl and/or polymethylene polyphenyl polyisocyanate.
申请公布号
WO03074286(A1)
申请公布日期
2003.09.12
申请号
WO2003JP02349
申请日期
2003.02.28
申请人
NIPPON PAPER INDUSTRIES CO., LTD.;NAGAI, TATSUO;HAMADA, KAORU;FUKUCHI, TADAKAZU;SASAKI, TAKASHI
