This table indicates the approximate exposure time required with typical indoor lighting before a noticeable change in color or fading may be seen. Media type | Exposure time |
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Premium Photo paper | a few months | HP Design Glossy | a few months | HP Brochure and Flyer Paper--2 sided Gloss | a few days | HP Colorfast Paper | about one year | HP Design Heavyweight Paper | one month |
Note 1: Light intensity can vary dramatically, and will substantially change the estimated lifetimes. Full sunlight exposure can be an order of magnitude worse than the estimates given above. Note 2: The standard for failure used here (4 delta E units) is much stricter than those generally used to indicate lightfastness in the consumer market, so the estimated lifetimes may be shorter than published information. This more closely predicts noticeable color change, as opposed to the looser objectionable change criteria used in the consumer market. Store prints protected from light, in an envelope or folder. For longer life when exposed to light, mount prints behind glass or laminate them (this will roughly double their lifetime). Use HP Colorfast Paper for the longest lifetime. We strongly recommend avoiding use of HP Brochure and Flyer Paper - 2 Sided Gloss in situations where it will be exposed to light for extended periods of time. Very high humidity may further accelerate fading. |