Heavy Blue / Purple Ink can be very tricky to print. Even a 0.2 - 0.5% fluctuation of ink volume on the blue or purple component can completely throw the color off.
When we offer Poster Printing Service for Conference Event, the Consistent Color (over 50-100 poster) is very important.
Our Poster Printing Operation has calibration procedure to get our Fabric Poster Printing to achieve Stable / Consistent Print Color over at least 100-150 sq. ft. - so the first poster looks consistent to the last one.
Picture show 14,000 square inch of Corporate Poster (in this case, UBC Corporate Color), with the Poster doing Solid Blue - Teal Green - Dark Blue Text Color. The ability to do 14,000 square inch of 'ON' - 'OFF' ink switching in Ink Penetration in the FABRIC FIBER is very impressive.