The pigment colorant improves light and gas resistance. Since the pigment colorant exists in the particle form, only the surface is affected by light and gas, and the colour inside remains vivid. Epson UltraChrome Ink utilises this property of pigment ink effectively achieving superior light and gas resistance.
Light source: Fluorescent Light
Intensity: 70,000 lux
Temperature: 240C
Humidity: 60%RH
Glass mount: 2mm, soda lime
Fade criteria: Pure YMC 30% loss at OD=1
Display life calculation: Total illuminance
* For more information on lightfastness.