Coloring composition for image formation and method for improving ozone resistance of color image
申请人:——
公开号:US20040089200A1
公开(公告)日:2004-05-13
A coloring composition for image formation comprising an azo dye having an aromatic nitrogen-containing 6-membered heterocyclic ring as a coupling component, a coloring composition which comprises an azo compound having an oxidation potential nobler than 1.0 V vs. SCE and comprising at least two substituents having a pKa value of −10 to 5 in water, and a method for improving ozone resistance of a color image, the method comprising using a compound having an oxidation potential nobler than 1.0 V vs. SCE and showing a maximum absorption at a wavelength between 500 nm and 580 nm with a half-value width of 150 nm or narrower.
一种用于图像形成的着色组合物,该组合物包含一种具有芳香族含氮6元杂环作为偶合组分的偶氮染料,一种着色组合物包含一种氧化电位高于1.0 V vs. SCE的偶氮化合物,该化合物包含至少两个在水中pKa值为-10至5的取代基,以及一种用于提高彩色图像抗臭氧性的方法,该方法包括使用氧化电位高于1.0 V vs. SCE的化合物。一种提高彩色图像抗臭氧性的方法,该方法包括使用一种氧化电位高于 1.0 V vs. SCE 且在 500 nm 和 580 nm 之间的波长处显示最大吸收、半值宽度为 150 nm 或更窄的化合物。