It's easy to find examples of the word
fuser in use. For example, on
www.printerworks.com, "If you don't see your fuser here, try searching our database under your printer model." And on the same site, "Is your fuser a loser?"
The only dictionary I found it in was a specialist one,
A Dictionary of Computing (Oxford University Press). So does this mean it's too technical for our list? I think not - we recently set a precedent with
gilp, which was hard to find in general dictionaries but is clearly used by painters and decorators. We added
gilp to the list (despite already having two other words for the same thing,
magilp and
megilp), so it would seem wrong to reject
fuser - especially considering that laser printers and photocopiers are such widely used appliances.