Patent ID: 7070257

Claim:
A double-sided printer including: a support frame; a housing mounted on the support frame, the housing defining a feed opening and an exit opening; a feed roller assembly mounted on the support frame, adjacent the feed opening, to feed print media into the housing; a duplex print engine mounted on the support frame downstream of the feed roller assembly, containing opposed page width print heads the print heads being configured to print substantially simultaneously on both sides of a sheet of print media fed between the print heads by the feed roller assembly; an exit roller assembly located adjacent the exit opening of the housing; and a pair of opposed endless belts interposed between the print engine and the exit roller assembly, the belts being displaceable towards each other into an operative condition to engage and feed the print media from the feed roller assembly to the exit roller assembly, prior to printing, and away from each other into an inoperative condition during operation of the print engine; and an air coupling fast with the housing and arranged to distribute air to the print heads of the duplex print engine to maintain said print heads free of debris in use.