Memjet Technology Limited

Billy Sy

Christopher Hibbard

Rommel Balala

David Oliver Burke

Mark Profaca

Gilbert Alemana

Dan Baterna

A printing unit includes: three elongate printheads positioned in a staggered overlapping arrangement for spanning across a media feed path, wherein a first printhead and a second printhead are longitudinally spaced apart and positioned in a row across the media feed path and a third printhead is offset from and overlaps with both the first and second printheads; three wipers for longitudinally wiping respective printheads in a direction perpendicular to a media feed direction, each wiper being parked at one longitudinal end of its respective printhead. One of the wipers, in its parked position, is positioned in a space between the first and second printheads.

Printing unit with three printheads

A printing unit includes: a sleeve and a print module received in the sleeve, the print module being slidably removable, in a first direction, from the sleeve. The print module includes a supply module and a replaceable printhead. The printhead is slidably removable, in a second direction, from the supply module, the first and second directions being non-parallel.

Printing unit with replaceable printhead

A printing assembly includes: a print chassis having a fixed sleeve and a print module slidably and releasably mounted in a respective sleeve. The print module has a supply module and replaceable printhead cartridge, the printhead cartridge being slidably and releasably mounted to the supply module. The printhead cartridge is removable from the print module only when the print module is released from the fixed sleeve.

Printing assembly having print module sleeve and sleeve arrangement

A printer includes: a first fixed printhead; a second fixed printhead positioned downstream of the first printhead relative to a media feed direction; a platen for supporting print media; an input media transport mechanism positioned upstream of the first printhead, the input media transport mechanism exerting a gripping force Non print media; an output media transport mechanism positioned downstream of the second printhead, the output media transport mechanism exerting a gripping force Non print media; and an intermediary media transport mechanism positioned between the first and second printheads, the intermediary media transport mechanism exerting a gripping force Non print media. The gripping forces satisfy the relationship N&#x3e;N&#x3e;Nfor optimal printing results.

Media transport mechanism for printer having multiple printheads

A print module includes: a body housing at least one printed circuit board (PCB); an air inlet and an air outlet positioned in a roof of the body; an air pathway extending through the body between the air inlet and the air outlet; and an inkjet printhead positioned at a lower part of the body opposite the roof, the inkjet printhead electrically communicating with the PCB.

Print module with air exhaust opposite ink ejection direction

A printer includes: a first fixed printhead; a second fixed printhead positioned downstream of the first printhead relative to a media feed direction; a fixed platen for supporting print media; an input roller assembly positioned upstream of the first printhead, the input roller assembly comprising a pair of input rollers having a first nip force N; an output roller assembly positioned downstream of the second printhead, the output roller assembly comprising a pair of output rollers having a second nip force N; and an intermediary roller assembly positioned between the first and second printheads, the intermediary roller assembly comprising a pair of intermediary rollers having a third nip force N. The nip forces satisfy the relationship N&#x3e;N&#x3e;Nfor optimal printing results.

Roller feed mechanism for printer having multiple printheads

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.

Printer having printhead extending and retracting through maintenance module

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.

Printhead capping system and drain shaft arrangement

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.

Modular printer having print bar chassis seated on maintenance chassis

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.

Printing unit having fixed frame supporting independently movable capper and wiper

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.

Print module for modular printer having replaceable printhead cartridges

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.

Printhead maintenance system with cap cover

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.

Printer having L-shaped maintenance modules for plurality of printheads

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.

Print module with air cooling arrangement

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.

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North Ryde, Australia

Billy Sy