June 16, 2021
While some memories last forever, even the most indelible images can fade over time – whether prints, negatives, or slides. You might be wondering, why do photos fade? There are many different reasons why.
So, why do colors fade in the sun? When color film became widely available to consumers in the early 1960s, the dyes were highly unstable. But even prints from the 1970s can look like washed-out smudges. The ink used to print these photographs contained a light-absorbing molecule called chromophores. When these compounds absorb any amount of light, the chemical bond of the picture dye, pigment, and ink break down, causing portions of the photo emulsion (surface) to separate into tiny pieces. The result is a faded, hazy, or discolored picture. Because magenta (red) dye is the most unstable when exposed to light, compared to cyan/blue and yellow, it’s common for older photos to have a slightly greenish tint.
Pigment dyes (laser printed) used in many modern color photographs have archival stability that nearly rivals black and white photographs. But the good news is that the dye-based inks used in far less expensive inkjet printers are much more resistant to fading and smudging than in the past.
Household chemicals, tobacco smoke, and dust can damage the chemical composition of photos and cause fading, stains, and abrasions. Trying to clean photos with household chemicals only makes matters worse.
Anything acidic such as masking or adhesive tape, the printing paper itself, or mats that aren’t acid-free can stain prints. And those magnetic photo pages that were so popular back in the 1970s–1990s are the worst. Trying to remove the photos without ruining them is nearly impossible, not to mention the damage the sticky residue causes! If your family photos are yellowish in hue, this was likely caused by acidic material.
You should never store photos in humid environments because exposure to moisture can rapidly change the hues through oxidation. Dye-based inks usually degrade faster than pigment-based inks because the latter have particles within a clear resin that reduces the effects of oxidation. Humidity can also cause fungus damage, which appears as big brown splotches.
If you’re worried about what to do with printed photos, the first step to prevent further fading and other problems is proper storage. Here are a few helpful tips:
The easiest, most convenient, and effective way to stop photos from fading forever is to get them digitized. At ScanDigital, we have the expertise to restore faded and otherwise damaged photos to their former glory, in many cases. Just don’t wait — time is of the essence when it comes to saving family photographs!
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July 20, 2021
July 20, 2021
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