Mostly R series Epsons (I don't care for Epsons - I call them The ClogMeisters) and a few HPs (I've heard that the HPs aren't that good at it). You can easily mod some of the iP model Canons (e.g. iP4200/4300) to do it. The needed parts are available around the web (it's just a matter of bringing them up to Euro spec as the Canons they sell there can do that standard).
.bh.