| 摘要 |
A printhead for an inkjet printer, comprising an array of nozzles for ejecting ink and an air duct. The air duct receives pressurized air and air passages extend from a base of the air duct to transfer air for use in the vicinity of the nozzles. Also provided is an air valve conduit positioned within the air duct, the air valve conduit provided with apertures in a base of the air valve conduit. The air valve conduit being movable longitudinally within the air duct such that the air passages and the apertures are aligned to transfer air or misaligned not to transfer air. A cam follower extends from an end region of the air valve conduit and engages with a cam surface, the position of the air valve conduit selectively movable according to the rotational position of the cam surface. |
