| 摘要 |
PURPOSE:To enhance solubility and productivity, by providing a recording layer comprising a specified phthalocyanine compound. CONSTITUTION:A recording layer comprising a compound of the formula is provided. In the formula, each of R1, R2, R3, R4, R5, R6, R7 and R8 is hydrogen or an alkyl, with the proviso that at least one of R1-R8 is a tertiary carbon- containing alkyl, and the total number of carbon atoms in R1-R8 is at least 4, and M is 2H, a metal, metallic oxide or metallic halide. The total number of carbon atoms in R1-R8 is preferably 12-24. Preferable examples of M include metals of Mg, Al, Ti, V, Co, Cu, In, Sn, Pb and oxides and chlorides thereof. |
