Welcome Doc. I think Kipa (Gunlabaski Road branch) may have a couple of home/office laser printers available, but if not, as Dizzy Jan notes, they do have a range of good quality inkjets. BTW inkjet cartridges are expensive where ever you buy them in the world!!
As alternative there is always Caspers on the bank road back out of Fethiye centre, near to the traffic lights that comes out from the Fish market. Otherwise it is possibly only online shopping, but at least there is probably a bigger range to choose from.