Memjet Technology Limited

Dan Baterna

Rommel Balala

Christopher Hibbard

Billy Sy

David Oliver Burke

Jason Mark Thelander

Peter Crichton

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 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 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 dual nip release mechanism includes: a rigid actuator body including a tail portion with a handle and a pivotally-mounted head portion having a nose member extending therefrom; a rocker arm pivotally mounted about a rocker arm shaft, the rocker arm having a proximal end for engagement with part of the nose member and a distal end engaged with a first shaft; and legs hingedly connected to the tail portion, each leg having a foot engaged with a second shaft and a heel for camming engagement with a fixed plate. During use, actuation of the handle causes simultaneous movement of the first and second shafts from a nip closed position to a nip open position via pivoting of the rocker arm and simultaneous camming engagement of the heel with the fixed plate.

Dual nip release mechanism

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.

Particle collection system for an 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 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.

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North Ryde, Australia

Dan Baterna