| 摘要 |
An infrared dye composition including at least: a compound (I) whose spectral absorption maximum wavelength is in a range of from 750 nm to 1,050 nm; and a compound (II) whose spectral absorption maximum wavelength is in a range of from 400 nm to 700 nm, wherein, when an absorbance of the infrared dye composition at a spectral absorption maximum wavelength in the range of from 750 nm to 1,050 urn is designated as 1, a maximum absorbance (Dmax) of the infrared dye composition in the range of from 400 nm to 700 nm is 0.5 or lower, and a ratio (Dmax/Dmin) is 10 or lower, and an infrared dye composition excellent in gray balance in the visible light region, and an infrared ray absorbing ink and an electrophotographic toner using the same are provided.
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