Top experts review the latest patents they read and the latest papers
and lectures they attended at conferences; they then make a selection
of the most promising technologies and summarize in a few lines what
the substance you should take away with you.
Provided is a porphyrazine dye suitable for use in ink-jet recording, the porphyrazine dye giving a cyan ink with a satisfactory hue, having various excellent fastness properties, in particular, ozone resistance, and attaining a high color density. Also provided is an ink composition containing the dye. The porphyrazine dye is a porphyrazine dye represented by formula (1) or a salt thereof. In...