发明授权
US08608842B2 Infrared absorbing composition, infrared absorbing ink, recorded article, image recording method, and image detecting method 有权
红外吸收组合物,红外吸收油墨,记录物,图像记录方法和图像检测方法

Infrared absorbing composition, infrared absorbing ink, recorded article, image recording method, and image detecting method
摘要:
An infrared absorbing composition including a compound that is represented by formula (1) and has solubility of 30 mg/mL or less in toluene at 25° C., an organic solvent having a solubility parameter of from 7.3 to 12.1, and a resin is disclosed. In formula (1), each of R1 to R16 independently represents a hydrogen atom or a substituent group, provided that at least one of R1 to R16 represents an R17—X— group or that the compound represented by formula (1) contains at least one condensed-ring structure in which any adjacent two of R1 to R16 form a ring; X represents —S—, —NH—, —NR18—, or —O—; each of R17 and R18 independently represents an aliphatic group or an aryl group; and M represents two atoms selected from the group consisting of hydrogen atoms and monovalent metal atoms, or a divalent metal atom, or a divalent substituted metal atom moiety including a trivalent or tetravalent metal atom and a substituent group.
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