Hewlett-Packard Development Company, L.p.

Eduardo Ruiz Martinez

Rafael Ulacia Portoles

Joaquim Brugue Garvi

Joan Sanjuan

Daniel Gonzalez Perello

Francesc Roure Pastor

Fernando Juan

Oscar Moya Rojo

Alfonso Cameno Salinas

Xavier Gasso Puchal

Brent Ewald

William F Winters

Haseeb Yusef

Jordi Gimenez Manent

Alfons Lobete Camps

Drew Berwager

Micah Aberth

Ernesto Carrera Moran

According to an example, a recoater for a three-dimensional (3D) printer may include a cylindrical element having a surface to spread build material particles. The build material particles may have a specified average dimension and the surface may include a plurality of depressions that have dimensions that are smaller than the specified average dimension of the build material particles.

Recoater for 3D printers

A print bar for a for a multi-pass printer, the print bar comprising a static part configured to extend across a print area of a print target and a moveable part comprising a print bar beam and printer comprising such a print bar.

Print bar for a multi-pass printer and multi-pass page-wide-array printer

An assembly comprises at least first and second transmission links. Each transmission link controls movement of a respective element coupled to a first side of the transmission link, under control of a common drive source coupled to a second side of the transmission link. A synchronizing unit is interposed between the first side and the second side of each transmission link, to synchronize movement of the respective elements by the common drive source.

Transmission link assemblies

Provided is a print bar. The print bar comprises a reference element to align the print bar with a mounting structure of a printer. The print bar further comprises a flat elongate sheet metal portion with constant height whose length is larger than its width and whose width is larger than its height. Moreover, the print bar comprises a plurality of plastic members detachably mounted to a mounting surface of the flat elongate sheet metal portion. The plurality of plastic members is spaced apart from each other in the length direction.

Print bar

A modular print engine unit for a media-wide array printer includes multiple printhead modules, each printhead module having printing dies, and each printing die having multiple nozzles. The modular print engine unit is independently operable relative to another modular print engine unit within the media-wide array printer.

Modular print engine unit

A modular print engine unit for independently operable use in a media-wide array printer includes multiple printhead modules, each printhead module including multiple printing dies, and each printing die including multiple nozzles. The modular print engine unit further includes a printing fluid supply system to feed, in use, printing fluid to the multiple printhead modules; a print alignment module operable, in use, to align the multiple printhead modules; an error detection module operable, in use, to detect an operating status of the multiple nozzles; and a service sub-system operable, in use, to service the multiple nozzles.

A printing device comprises a medium handling section to handle a print medium; an image section to form an image on the print medium while the medium is handled by the medium handling section; a variable stop to support the medium handling section or the image section when the printing device is in a first configuration, the variable stop having at least two states, each state defining a respective separation between the medium handling section and the image section when in the first configuration, a movement section to cause relative movement between the medium handling section and the image section, the relative movement moving the printing device between the first configuration and a second configuration, where neither the medium handling section nor the image section is supported by the variable stop in the second configuration; the variable stop to change state when the printing device is in the second configuration.

Growing community of inventors

Sant Cugat del Valles, Spain

Eduardo Ruiz Martinez