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 nm 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.
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 nm 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.
摘要:
A method of producing a near-infrared absorbing dye compound, useful for image forming materials, infrared heat-sensitive recording devices, optical film materials, and the like, containing a process of reacting a compound represented by formula (I) with peroxomonosulfuric acid or its salt. wherein R 111 , R 112 , R 121 , R 122 , R 131 , R 132 , R 141 and R 142 each independently represent a hydrogen atom, an aliphatic group or an aromatic group; R 103 , R 113 , R 123 , R 133 and R 143 each independently represent a substituent; and n 103 , n 113 , n 123 , n 133 and n 143 each independently denote an integer from 0 to 4.
摘要:
A method of producing a near-infrared absorbing dye compound, useful for image forming materials, infrared heat-sensitive recording devices, optical film materials, and the like, containing a process of reacting a compound represented by formula (I) with peroxomonosulfuric acid or its salt.
wherein R 111 , R 112 , R 121 , R 122 , R 131 , R 132 , R 141 and R 142 each independently represent a hydrogen atom, an aliphatic group or an aromatic group; R 103 , R 113 , R 123 , R 133 and R 143 each independently represent a substituent; and n 103 , n 113 , n 123 , n 133 and n 143 each independently denote an integer from 0 to 4.