METHOD OF EJECTING SOLVENT-BASED INK COMPOSITION COMPRISING KETONE SOLVENT

摘要

A method of ejecting ink from a thermal inkjet printhead. The method comprises the steps of: (i) supplying an ink to at least one nozzle chamber of the printhead; and (ii) actuating a heater element in the nozzle chamber and heating the ink to a temperature sufficient to form a bubble therein, thereby causing the ink to be ejected from a nozzle opening associated with the nozzle chamber. The ink is a solvent-based ink composition comprising: (a) 20-80 wt. % of a compound of formula (B); wherein: R5 is a C1-6 alkyl group and R6 is a C1-6 alkyl group; or R5 and R6 are together joined to form a C3-12 cycloalkylene group; (b) 10-70 wt. % of a C1-6 alcohol; and (c) 0.01-25 wt. % of a colorant.