Printhead assembly, printing system including printhead assembly, method for assembling printhead assembly and method for carrying out maintenance.

摘要

The invention relates to a printhead assembly comprising a frame and a printing unit, wherein the printing unit comprises: - a positioning unit; - a base plate; - a printhead; - a first support; - a second support; - a guiding mechanism; and - a lifting mechanism, wherein the positioning unit is fixed to the frame at a predetermined location and is configured to receive the base plate and position the base plate relative to the frame, wherein the printhead is exchangeably mounted to the base plate at a predetermined location, wherein the base plate is releasably connected to the second support in such a manner that the second support is able to move the base plate in a lifting direction from and to the positioning unit while allowing the base plate to move relative to the second support in six degrees of freedom when the base plate is received by the positioning unit, wherein the second support is mounted to the first support via the lifting mechanism allowing the second support to be moved relative to the first support in the lifting direction, and wherein the first support is mounted to the frame via the guiding mechanism allowing the first support to be moved in a direction other than the lifting direction between a maintenance position and a position in which the base plate is positioned above the positioning unit to be received by the positioning unit.