MAGENTA DYES AND THEIR USE IN INK-JET PRINTING

摘要

A compound of Formula (1) and salts thereof; wherein: Q is an optionally substituted aryl ring; Y is C02H, S03H or P03H2; R and X are substituents; m is 0 to 3; n is 0 to 6; and q is 0 to 6. Also compositions comprising these compounds, ink-jet inks, an ink jet process and an ink-jet cartridge.