hi, argyll works fine for me, compliments to graeme. i want to optimise paper usage for printer targets, my esp3800 prints up to a2 or 17". what i the maximum of patches the i1pro would read per row? basiccolor selles rulers for longer rows, so i guess the instrument reads more than the 21 that seems to be default. i understand that it would need messing with paramerters im printarg but that i might manage. greetings, harry