Since the pigment colorant of ink exists in the particle form, only the surface is affected by light and gas, and the colour inside remains vivid. Epson's UltraChrome K3 Ink utilises this property of pigment ink, achieving exceptional levels of water-resistance, lightfastness (over 75 years*) and gasfastness (over 30 years*). Thanks to the UltraChrome K3 Ink set, the Epson Stylus Photo R2400 offers users the optimum in image quality and durability for photographic printing.
Light source: Fluorescent Light
Intensity: 70,000 lux
Temperature: 24°C
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.