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Printers & Copiers: Rollers and fuser units

By Tink! ·
I know I've heard that humidity can affect office machinery such as copiers, printers, and even computers.

Does anyone know how much damage humidity or humid paper causes to printer/copier rollers and fuser units?


We're a small office located in the front area of the plant (Reception Area). During the Spring and Summer on cooler days they open up the front door to let in the breeze. The problem is they also let in the humidity which can be pretty high.

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Check the specs

by jdmercha In reply to Printers & Copiers: Rolle ...

Check with your server manufacturer to get the environmental specs.

What can happen: As humid air cools water droplets can form and possibly cause an electrical short.

In the long run, a constantly changing environment can shorten the life expectancy of electronic equipment. The electrical conductors on a circuit board expand and contract at a different rate than the circuit board material. This can cause stress in the materials causing them to pull apart or crack.

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A lot depends on the type of printer

by mjd420nova In reply to Printers & Copiers: Rolle ...

A while back, NEC had a printer that used LEDs to impart the image onto the photo drum, and the voltage potential between the photo drum and toner particles was very critical. This process was also very touchy about the amount of moisture in the paper used. Many users took to placing unused paper in tupperware containers at the end of the day. They found that paper left out over night was causing shadows and fuzziness around the characters. I've not encountered this with HP laser type printers, but any time static charges are used to hold the toner to the page before it is fused with heat can cause innumerable headaches. Relative humidity will cause changes in character quality and some manufacturers do have specifications for minimum and maximum amounts.

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