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    • 29. 发明授权
    • Thermal transfer printing
    • 热转印
    • US4808568A
    • 1989-02-28
    • US46187
    • 1987-05-05
    • Peter GregoryRoy Bradbury
    • Peter GregoryRoy Bradbury
    • B41M5/26B41M5/385B41M5/388B41M5/39G09F9/302H03K17/296B41M5/035
    • B41M5/385G09F9/302B41M5/388B41M5/39Y10S428/913Y10S428/914
    • A thermal transfer printing sheet, suitable for use in a thermal transfer printing process, especially for the conversion of a digital image into a visible print, comprising a substrate having a coating comprising a dye of the formula: ##STR1## whereinRing A is unsubstituted or carries, in the 2- or 4-position with respect to the azo link, at least one group selected from --CX.sub.3, X.sup.1, CN, NO.sub.2, --OCO.Y, --CO.Y, --CO.H, --OSO.sub.2.Y and --SO.sub.2.Y, provided that A is substituted when Z is CH.sub.3 and R is C.sub.2-4 -alkyl;X & X.sup.1 are each independently halogen;Y is selected from R.sup.1, --OR.sup.1, SR.sup.1 and --NR.sup.1 R.sup.2 ;R.sup.1 is selected from C.sub.1-12 -alkyl, C.sub.1-12 -alkyl interrupted by one or two groups selected from --O--, --CO--, O.CO-- and --CO.O--, C.sub.3-7 -cycloalkyl, mono- or bi-cyclic aryl and C.sub.1-3 -alkylene attached to an adjacent carbon atom on Ring A;R.sup.2 is selected from H, C.sub.1-12 -alkyl, C.sub.3-7 -cycloalkyl and mono- or bi-cyclic aryl;Z is C.sub.1-12 -alkyl or phenyl; andR is selected from C.sub.2-12 -alkyl unbranched in the alpha-position, C.sub.2-12 -alkyl unbranched in alpha-position and interrupted by one or two groups selected from --O--, --CO--, O.CO-- and --CO.O--, phenyl, C.sub.1-4 -alkylphenyl, biphenyl and biphenyl interrupted by a group selected from --O--, --CO--, O.CO-- and --CO.O--, each of which is free from hydrogen atoms capable of intermolecular hydrogen bonding.
    • 一种适用于热转印印刷工艺的热转印片材,特别是用于将数字图像转化成可见印刷物的热转印片材,其包含具有包含下式染料的涂层的基材:其中环A为未取代的 或在相对于偶氮键的2-或4-位上携带至少一个选自-CX 3,X 1,CN,NO 2,-OCO.Y,-CO.Y,-CO.H,-OSO 2的基团 Y和-SO 2 Y,条件是当Z为CH 3且A为C 2-4烷基时,A为取代基; X&X1各自独立地为卤素; Y选自R1,-OR1,SR1和-NR1R2; R 1选自C 1-12 - 烷基,被一个或两个选自-O - , - CO-,OCO-和-COO基团间隔的C 1-12 - 烷基,C 3-7 - 环烷基, 或环环A上的相邻碳原子上的双环芳基和C1-3亚烷基; R 2选自H,C 1-12 - 烷基,C 3-7 - 环烷基和单环或双环芳基; Z是C 1-12 - 烷基或苯基; 并且R选自在α-位上未分支的C 2-12 - 烷基,在α-位上未分支并被一个或两个选自-O - , - CO-,O.CO-和 - CO,O-,苯基,C 1-4 - 烷基苯基,联苯基和联苯被选自-O - , - CO-,OCO-和-CO.O-的基团中断,各自不含氢原子 的分子间氢键。