Abstract: A print module includes: a body housing first and second opposed printed circuit boards (PCBs), each of the first and second PCBs having heat-generating electronic components; an air inlet and an air outlet positioned towards an upper part of the body; an air pathway extending between the air inlet and the air outlet; a plurality of heatsinks, each heatsink being thermally coupled with one of the heat-generating components and having an array of cooling fins extending into the air pathway; and an inkjet printhead receiving power and print data from at least one of the first and second PCBs. The inkjet printhead is positioned toward a lower part of the print module.

Abstract: A printer including: a print module having a printhead for printing onto media fed along a media feed path and a maintenance module for maintaining the printhead. The maintenance module includes an L-shaped frame having a longer arm extending parallel with a longitudinal axis of the printhead and a shorter arm. The longer arm includes a capper for capping the printhead and the shorter arm includes a wiper for longitudinally wiping the printhead.

Abstract: A pagewide printing unit for mounting over a media feed path and printing onto media. The printing unit includes: a print module having a printhead; a maintenance module having a fixed frame supporting a capper and a wiper, the print module being movable relative to the fixed frame; and a lift mechanism for raising and lowering the print module relative to the fixed frame between a maintenance position a printing position. The fixed frame is in a same fixed position in both the maintenance and printing positions. Further, the capper and the wiper are each independently movable relative to the fixed frame.

Abstract: An inkjet printer includes: an inkjet printhead; an ink line connected to the printhead; and a compliance fluidically communicating with the ink line. The compliance includes sealed flexible bellows configured for dampening ink pressure fluctuations in the ink line.

Abstract: A printhead capping system includes: a mounting bracket having a fixed shaft; a cap assembly mounted on the mounting bracket; and an arm hingedly connected to the shaft, the arm moving the cap assembly between a capping position and a printing position. The shaft is a drain shaft for receiving fluid drained from the cap assembly.

Abstract: A printhead capping system includes: a fixed plate; first and second sliders slidably movable along the fixed plate; a mounting bracket having a cap assembly mounted thereon; and first and second arms interconnecting the mounting bracket and the respective first and second sliders. Movement of the first and second sliders towards each other causes lateral movement of the cap assembly away from the fixed plate, and movement of the first and second sliders away from each other causes lateral movement of the cap assembly towards the fixed plate.

Abstract: A printhead maintenance system includes: a maintenance chassis having a maintenance module with a laterally movable capper; a print bar chassis movably mounted on the maintenance chassis, the print bar chassis having a printhead and a cover for the capper; a lift mechanism for raising and lowering the print bar chassis relative to the maintenance chassis between a capping position a printing position; and a retraction mechanism for laterally extending and retracting the capper between the capping position and the printing position. The printhead is engaged with the capper in the capping position and the cover is engaged with the capper in the printing position.

Abstract: A print module including a printhead cartridge releasably engaged with a supply module The supply module includes a body housing electronic circuitry for supplying power and data to a printhead of the printhead cartridge; and an ink inlet module and an ink outlet module flanking the body at opposite sides thereof. Each of the ink inlet and ink outlet modules having a respective ink coupling engaged with complementary inlet and outlet couplings of the printhead cartridge.

Abstract: A modular printer includes: a media support defining a media feed path; and a plurality of pagewide printing units spaced apart along a media feed direction of the media feed path. Each printing unit includes: a maintenance chassis fixedly positioned over the media feed path; and a print bar chassis seated on the maintenance chassis, the print bar chassis supporting one or more print modules extending across a width of the media feed path. A lift mechanism raises and lowers the print bar chassis relative to the maintenance chassis, with each print bar chassis being independently liftable from a printing position to a maintenance position. A footprint of each printing unit in both the printing and maintenance positions is defined by a perimeter of the maintenance chassis.

Abstract: A printer includes: a media support defining a media feed path; and a pagewide printing unit for printing onto media fed along the media feed path. The printing unit includes: a maintenance chassis fixedly positioned over the media feed path, the maintenance chassis having a maintenance module fixedly mounted thereto; a print bar chassis movably mounted on the maintenance chassis, the print bar chassis including a print module having a printhead; and a lift mechanism for raising and lowering the print bar chassis relative to the maintenance chassis between a maintenance position a printing position. The printhead extends and retracts through a space defined by the maintenance module in the printing and maintenance positions, respectively.

Abstract: A method of removing air bubbles from a circulating ink delivery system supplying ink to an inkjet printhead. The ink delivery system includes an ink container positioned below the printhead, an upstream ink conduit interconnecting a supply port of the ink container and a first port of the printhead, and a downstream ink conduit interconnecting a return port of the ink container and a second port of the printhead. The method includes the step of: pumping ink around the ink delivery system from the supply port to the return port, wherein a flow speed of ink through the downstream ink conduit is greater than a flow speed of ink through the upstream first conduit.

Abstract: An inkjet printer includes: a printhead having a first port and a second port; an ink container for supplying ink to the printhead, the ink container comprising a supply port and a return port; a first ink conduit interconnecting the supply port and the first port; a second ink conduit interconnecting the return port and the second port; and a pump configured for pumping ink from the supply port to the return port. The second ink conduit has a smaller internal cross-sectional area than the first ink conduit for providing a faster flow speed of ink in the second ink conduit relative to the first ink conduit when the pump is actuated.