1.
    发明专利
    未知

    公开(公告)号:DE69222597T2

    公开(公告)日:1998-02-12

    申请号:DE69222597

    申请日:1992-07-28

    Abstract: According to the present invention, there can be provided a black dyestuff for heat-sensitive transfer record comprising at least one orange dyestuff represented by the formula (1) Ar1 - N = N - Ar2 - N = N -Ar3 (1) [wherein each of Ar1, Ar2 and Ar3 is independently an aryl group which may have a substituent] and at least one blue dyestuff represented by the formula (2) [wherein each of R1, R2 and R3 is independently a hydrogen atom, halogen atom, nitro group, hydroxyl group, alkyl group which may have a substituent, alkoxy group, alkylsulfonylamino group or alkylcarbonylamino group, and each of R4 and R5 is independently an alkyl group which may have a substituent], and a black heat-sensitive transfer sheet in which the above-mentioned dyestuff is used.

    3.
    发明专利
    未知

    公开(公告)号:DE69015998T2

    公开(公告)日:1995-07-06

    申请号:DE69015998

    申请日:1990-09-12

    Abstract: A heat-sensitive sublimation transfer cyan dye is of formula (I). In (I), R1 = H, alkyl, alkoxy, alkylcarbonylamino, formylamino or halogen; R2, R3 = alkyl, alkenyl, alkoxyalkyl, aralkyl, aryl, halogenoalkyl, cyanoalkyl; provided that they may be combine to each other to form a ring; and X = a gp. of formula (i) (ii) or (iii). Also claimed is a heat-sensitive sublimation heat-transfer sheet comprising dye(s) of formula (I).

Patent Agency Ranking