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    METHOD OF TRANSFERRING AZO DYE HAVING PYRIDINE-COUPLING COMPONENT
    26.
    发明专利
    METHOD OF TRANSFERRING AZO DYE HAVING PYRIDINE-COUPLING COMPONENT 失效

    公开(公告)号：JPH0230590A

    公开(公告)日：1990-01-31

    申请号：JP14976189

    申请日：1989-06-14

    Applicant: BASF AG

    Inventor： KAARUUHAINTSU ETSUBATSUHA ,  GUNTAA RAMU ,  HERUMAN REFURAA ,  HERUMUUTO RAIHERUTO ,  RIYUUDEIGAA ZENSU

    IPC: B41M5/385 ,  B41M5/26 ,  B41M5/388 ,  B41M5/39 ,  C09B29/42 ,  D06P5/13

    Abstract: PURPOSE: To enhance thermal, photochemical and chemical stabililities with easy thermal transfer by thermally transferring azo dyes containing a coupling component with a diaminopyridine as a base on a paper covered with a plastic from a substrate. CONSTITUTION: Azo dyes represented by one or several types of general formulae I are transferred from a substrate to a plastic coated paper by diffusion with an aid of a thermal printing head. A residue D of a formula I is derived from a diazo component. First, the dye is treated in a printing ink together with a binder in an organic solvent such as a suitable chlorobenzol or the like. An inert substrate is coated with it, and dried. Then, the dye is transferred from the substrate onto the paper covered with thermally stable plastic as a dye receptor layer by using a heating head for heating at 300 deg.C or higher, and the dye is diffused in the receptor layer. From a test result, this method exhibits an easy thermal transferability and yet small migration of the dye at the ambient temperature and further high thermal, photochemical and chemical stabilities.

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