A type of printer (6)
I believe the answer is:
inkjet
'a type of printer' is the definition.
(I've seen this before)
This is all the clue.
(Other definitions for inkjet that I've seen before include "Kind of printer" , "Printer powered by a liquid engine" , "Type of electronic printing" , "and 20 Across: Type of computer accessory" , "Type of office printer" .)