Half a life time ago when I had just started in this profession the company still had a lot of liquid copiers in schools. It took me a while to cotton on but all the old techs always took a weeks holiday the week school went back after the summer break.
The reason why? After sitting for 6 weeks locked up in a room that never got under 40 deg Celsius the liquid toner and developer had turned into super glue and the first time someone pressed the print button the cleaning blade ripped half the selenium coating off the drum. You then spent 2 hours trying to flood the drum shaft with fresh developer in an attempt to dissolve this clag so you could lever the drum out with a crow bar.
It didn't take me long to learn to apply in June for the first week of February off as holidays. Ah the good old days!!
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