Hewlett-packard Development Company, L.p.

Juan Manuel Valero Navazo

Francisco Javier Perez Gellida

Mikel Zuza Irurueta

Roger Bastardas Puigoriol

Oriol Borrell Avila

Esteve Comas

Emilio Angulo Navarro

Ezequiel Jordi Rufes Bernad

Santiago Sanz Ananos

Antonio Gracia Verdugo

Alejandro Manuel De Pena

Antonio Monclus Velasco

Marina Cantero Lazaro

Joaquim Brugue Garvi

Ferran Rafat Esquius

David Claramunt Morera

Francisco Javier Pérez Gellida

Ignacio Alejandre

Jesus Garcia Maza

Eva Blay Lerin

Roger Bastardas Pulgoriol

Pasqual Batalia

David Claramunt Morena

There is disclosed additive manufacturing apparatus (), (), () comprising: a heater (), () to direct radiant heat onto an irradiation region () of a build platform (), at least part of the heater (), () being moveable to cause the irradiation region () to traverse over the build platform (); a coating module () moveable relative the heater (), () to traverse the build platform () to apply a build material onto the build platform (); and a print module () moveable relative the heater (), () to traverse the build platform () to selectively eject a print agent onto the build material.

Additive manufacturing with traversing irradiation region

In an example, a method includes acquiring a thermal image of a reflector within an additive manufacturing apparatus through a screen. An energy profile of the thermal image of the reflector may be determined and, based on the energy profile, an operational characteristic of the screen may be determined.

Operational characteristics of screens in thermal imaging

A method of forming a three-dimensional object includes detecting, with a thermographic camera, a temperature of a control point within at least one zone of the build material bed, and adjusting a power level supplied to at least one of the lamps of the array of lamps if the detected temperature of the control point of the at least one zone of the build material bed is not equal to a set temperature.

Forming a three-dimensional object

In one example, a vapor control heater for a printer includes a housing, a heating element at least partially enclosed by the housing, and a fan to move air over the heating element and into a flow of air from the printer dryer.

Vapor control heating in a printer

A drying assembly is disclosed. An example apparatus includes fans; a temperature sensor; a print engine to access instructions to cause a printer to perform a printing operation on media; and a processor responsive to an output of the temperature sensor to control the fans to force air onto the media to cause a substantially uniform temperature to be maintained across a width of the media during the printing operation and to cause a sum of air flow output by the fans to be maintained at a substantially constant value.

Drying assembly

Apparatus for directing air to media. The apparatus including an impinging plate having an array of orifices. The orifices are arranged in a plurality of rows oblique to the direction of motion of the media, and are also arranged to provide air to the media.

To direct air to media

In one example, a print zone heater includes a structure defining a plenum, a heating element, a fan to move air over the heating element into the plenum, and a conduit from the plenum to carry heated air into the print zone.

Print zone heating

In one example, a heating system includes a first heater having a first resistive heating element, a second heater having multiple second resistive heating elements arranged in parallel with a group of the second heating elements having a combined resistance equal to a resistance of the first heating element, and a controller to periodically switch power between the first heating element and the group of second heating elements at a zero crossing of an AC power source.

Heating system control

A drying assembly is disclosed. The drying assembly has at least 2 fan units where each fan unit has a fan. The fan speed of each fan is adjusted independently to control the air temperature from the fan. The airflow through all of the fans is maintained at a constant value.

A system of printing borderless images on printable media includes at least one sheet of printable media including an imaging surface and a non-imaging surface. The system further includes a removable extension strip having a front surface with an adhesive zone and a non-adhesive zone, a non-adhesive back surface, and a straight line of demarkation between the adhesive and non-adhesive zones. The adhesive zone is configured to removably adhere to the non-imaging surface, and the straight line of demarkation is configured as a placement guide for adhering the adhesive zone of the extension strip to the media. An associated method includes adhering an adhesive portion of removable extension strip to a non-imaging surface proximate a trailing edge of the media, and ink-jet printing an image on an imaging surface of the media using an ink-jet printer. The strip is used by rollers in the printer to advance the media.

Systems and methods for printing borderless images on printable media

A convertible printer usable with either a flexible media or rigid media is disclosed.

Growing community of inventors

Sant Cugat del Valles, Spain

Juan Manuel Valero Navazo