What’s wrong with my printer?

[KingGary]

Hi, my HP laser printer has started playing up. Prints fine except the bottom third of every printed page is a “ghost” version of the top third. I’ve just bought new toner cartridges but I’m concerned it might be the drum or fuser. It’s only a couple of years old and hasn’t been used much. Example print:



Any ideas?

[illmonkey]

The roller(s) are dirty.

[KingGary]

Turns out it was the toner. Crisis averted.