Printer with movable capping member and fixed printhead and platen
View Patent ↗An inkjet printer that has a printhead with an elongate orifice plate and a surface that surrounds the elongate orifice plate, a platen that partially defines a media path extending passed the printhead, a capping member with a seal for sealing engagement with the surface that surrounds the printhead, and a static solenoid for moving the capping member in a direction perpendicular to the longitudinal extent of the elongate orifice plate. During use, the printhead, the media path and the platen all remain fixed relative to each other, and the capping member is movable through the media path. Providing a sealing surface around the orifice plate that is configured to engage the cap and seal the printhead requires less manufacturing precision than a capping mechanism that directly engages the orifice plate. Production efficiencies from lower precision assembly have particular significance for high volume products.
1. An inkjet printer comprising:
a printhead with an elongate orifice plate and a surface that surrounds the elongate orifice plate;
a platen that partially defines a media path extending passed the printhead;
a capping member with a seal for sealing engagement with the surface that surrounds the printhead;
a static solenoid for moving the capping member in a direction perpendicular to the longitudinal extent of the elongate orifice plate; wherein during use,
the printhead, the media path and the platen all remain fixed relative to each other, and the capping member is movable through the media path.
2. An inkjet printer according to claim 1 wherein the printhead is provided as a cartridge configured for removal and replacement.
3. An inkjet printer according to claim 2 wherein the cartridge has a supply of ink for the printhead and a supply of media.
4. An inkjet printer according to claim 3 wherein the orifice plate is a nozzle array on an external surface of a pagewidth printhead integrated circuit (IC).
5. An inkjet printer according to claim 3 wherein the surface surrounding the orifice plate is part of a plastic component that is injection moulded such that the surface has a predetermined surface roughness.
6. An inkjet printer according to claim 5 wherein the surface has a recess for receiving the printhead IC such that the plastic component has integrally formed ink stores for the printhead IC.
7. An inkjet printer according to claim 6 wherein the recess is dimensioned such that the orifice plate is substantially flush with the surface surrounding the orifice plate.
8. An inkjet printer according to claim 7 wherein the capping member is biased into sealing engagement with the surface surrounding the orifice plate.
9. An inkjet printer according to claim 1 wherein the capping member has a blotter of porous material surrounded by the seal.