Re: light sensitive...
Back in the day when a sheet feeder was a clip-on-the-top option for Diablo daisywheel printers, we had a customer in Phoenix, Arizona with 10 of them. Around 3:30 pm, one printer would start printing on the platen, without loading any paper, almost every day, until maybe 4 pm. We showed up several mornings trying to catch it in the act, not a single mis-feed. Still, most afternoons we would get the service call. We replaced the feeder, the printer, swapped around the printers, to no avail. Turned out the sensor for paper being under the platen was washed out by the sunlight through the office window, on just that one printer, which would only last about 30 minutes. Moving the printer about 2 feet over took care of that one.
Biting the hand that feeds IT
