Quote:
no laser printer that I'm aware of replaces the drum at the same time as the toner


Almost all of the laser printers I've ever used did. The so-called "toner cartridge" contained both the toner and the main imaging drum.



http://computer.howstuffworks.com/laser-printer10.htm

I've seen a few large high-capacity printers where the toner really was just a bottle of black powder, but most of the SOHO printers I've seen make you replace a bulky mechanical assembly which contains the toner, imaging drum, and a few other smaller components.

I'm curious why you and I would have had two opposite experiences dealing with toner replacement on printers.
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Tony Fabris