We had blue coming out purple on one of our 800ps plotters, and plotters with a newer version of firmware have a paper option called 'Plain Paper-ec' that fixed it for us. Have you tried that one if available? -- Adam Division of Engineering Computing Services, College of Engineering On Mon, Aug 08, 2005 at 06:15:15PM -0400, Bryan Murphy wrote: I have an HP Design jet 800 that has been getting VERY heavy use (25 42"x47" posters in the last few days) and today, mid-print it started printing all blue as purple. We have since reset the printer to factory defaults, reinstalled the drivers, tweaked all of the available software settings, attempted a custom color profile made specifically for the paper from HP's website, verified that we are at the latest firmware version, changed paper rolls and swapped out ink cartridges. None of this has worked. Blue still prints out as purple. Has any one seen this behavior or know what we could do to fix it? Thank you. -- Bryan Murphy Computer/Network Coordinator Plant Research Labs and Plant Biology [log in to unmask] | [log in to unmask]