Printer and Photocopier Troubleshooting and Repair Collection : Laser printer drum damaged by extended e..  
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Laser printer drum damaged by extended exposure to light?

(From: DenFrodo (denfrodo@aol.com).)

Yes, with extended exposure. I remanufacture toner cartridges for a time. Long term exposure to light will effect the photoconductive layer. We even cover areas of some (scratched) after-market drums and exposed them to sunlight to see how it effected them. It takes extended exposure to show an effect. No, the printer will not detect the problem and the printer will probably print dark for the basic 'positive' image (a dark area is exposed to light) laser printer. A scanner or copier might print light (reflective light of the 'white' surface exposes the surface of the drum. Good Luck.