Memjet Technology Limited

Rommel Balala

Christopher Hibbard

Mark Profaca

Gilbert Alemana

Billy Sy

David Oliver Burke

Dan Baterna

Kianoush Mir Sanaei

Geoffrey Philip Dyer

Saminda Jayatileke

Richard Dimagiba

Paul Charles Knight

Brendan Shields

Jason Mark Thelander

Peter Crichton

Robert John Brice

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 device includes: an inkjet printhead; a lift mechanism for raising and lowering the printhead through a lift path; and a pivotally movable spit flap positioned in the lift path. The spit flap is configured to swing away from the lift path when the printhead contacts the spit flap during lowering of the printhead.

Spit flap for inkjet printhead

A printer includes: a platen having an ink-collection slot extending across its width; a wick bar received in the ink-collection slot, wherein an upstream gap and a downstream gap are defined at either side of the wick bar relative to a media feed direction; a printhead positioned over the wick bar; and a vacuum chamber in fluid communication with the ink-collection slot. The wick bar is mounted on a rotatable shaft and the vacuum chamber comprises a scraper positioned for scraping the wick bar as it rotates past the scraper.

Platen assembly for sheet fed printer

A printer includes: a printhead and a platen positioned below the printhead for supporting print media conveyed along a media feed direction through a print zone. The platen has a particle-collection slot upstream of the print zone relative to the media feed direction and a dam wall at a downstream side of the particle-collection slot. The particle-collection slot and the dam wall extend transversely relative to the media feed direction.

Printer having platen with particle-collection slot

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 printer includes: an inkjet printhead having first and second rows of printhead chips; a platen having first and second spittoon slots corresponding to the first and second rows of printhead chips, each spittoon slot having a length corresponding to a length of the printhead and a width extending between a respective upstream sidewall and a respective downstream sidewall of the platen; first and second rollers positioned in the respective first and second spittoon slots for receiving ink spitted from the first and second rows of printhead chips; a rotation mechanism for rotating the first and second rollers; and first and second scrapers engaged with respective first and second rollers. A diameter of each roller is less than the width of its respective spittoon slot.

Dual spittoon arrangement for inkjet printhead

A printer includes: a platen having an ink-collection slot extending across its width; a wick bar received in the ink-collection slot, wherein an upstream gap and a downstream gap are defined at either side of the wick bar relative to a media feed direction; a printhead positioned over the wick bar; and a vacuum chamber in fluid communication with the ink-collection slot. The wick bar is absent from a mid-portion of the platen and the mid-portion of the platen is aligned, in the media feed direction, with an upstream media picker.

A printer includes: a printhead; a platen positioned below the printhead for supporting print media conveyed along a media feed direction through a print zone, the platen defining at least one particle-collection slot upstream of the print zone relative to the media feed direction and an ink-collection slot positioned in the print zone downstream of the particle-collection slot. A dam wall is positioned between the particle-collection slot and the ink-collection slot, with the dam wall extending transversely relative to the media feed direction.

Printer having platen with particle and ink collection slots

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 compliance for use in an inkjet printer. The compliance includes flexible bellows configured for dampening pressure fluctuations in a fluid, wherein the bellows comprise a plurality of concentric portions joined via concertinaed sidewalls.

Robust compliance for use in inkjet printer

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 printer includes: an inkjet printhead having a row of printhead chips; a platen having a spittoon slot, the spittoon slot having a length corresponding to a length of the printhead and a width extending between an upstream sidewall and a downstream sidewall of the platen; a roller positioned in the spittoon slot between the upstream and downstream sidewalls for receiving ink spitted from the printhead, a rotation mechanism for rotating the roller; and a scraper positioned for scraping received ink from the roller. A diameter of the roller is less than the width of the spittoon slot, and an upper roller surface is relatively closer to the printhead than an upper surface of the upstream sidewall and/or the downstream sidewall.

Spittoon for inkjet printhead

A printer includes: a platen having an ink-collection slot extending across its width; a wick bar received in the ink-collection slot, wherein an upstream gap and a downstream gap are defined at either side of the wick bar relative to a media feed direction; a printhead positioned over the wick bar; and a vacuum chamber in fluid communication with the ink-collection slot. The wick bar has a wick surface sloped upwards from the upstream gap towards the downstream gap.

Mist extraction system for inkjet printhead

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 printhead; a platen positioned below the printhead for supporting print media conveyed along a media feed direction through a print zone, the platen defining a particle-collection slot upstream of the print zone relative to the media feed direction; and a vacuum chamber in fluid communication with the particle-collection slot. An upper surface of the platen has a plurality of raised ribs extending along the platen in the media feed direction and a dam wall extending across the platen transverse to the ribs. The dam wall is positioned at a downstream side of the particle-collection slot and the ribs extend towards the dam wall from an upstream side of the particle-collection slot.

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North Ryde, Australia

Rommel Balala