Epson Stylus Photo 2000P Printer Basics Manual page 31

avoiding direct sunlight and mounting prints under glass to help protect them from
humidity, cigarette smoke, and other atmospheric contaminants. Color stability varies
with lighting conditions, color intensity, color range, and print media. Using the
guidelines above, your EPSON photo prints can keep your memories alive for many
years.
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EPSON's lightfast tests were conducted by placing the printed image
under a 2 mm-thick glass frame, in these conditions:
Light source: fluorescent light
Intensity: 70,000 lux
Temperature: 75 F (24 C)
Humidity: 60%