Hewlett-Packard Development Company, L.p.

Luis Garcia Garcia

Salvador Sanchez Ribes

Sergio Puigardeu Aramendia

Ismael Chanclon Fernandez

Angel Martinez Barambio

Alex Andrea Tallada

Jorge Castano Aspas

Carmen Blasco

Vicente Granados Asensio

Emilio Lopez Matos

Steven J Simske

Xiaoqi Zhou

Alejandro Manuel De Pena

Scott A White

Guy Adams

David Ramirez Muela

David Soriano Fosas

Rafael Ulacia Portoles

Xavier Alonso Becerro

M Isabel Borrell Bayona

Pol Fornos

Sergio Puigardeu

Christine E Steichen

Ernesto Alejandro Jones Poppescou

Marc Serra Vall

Michael A Novick

Andre Garcia

Scott White

Adrien Chiron

Yuval Eckstein

M Isabel Borrel Bayona

Maria Isabella Borrell Bayona

Michael Alexander Novick

Isabel Borrell Bayona

A method for reducing artefacts in printed objects comprises receiving print data to be printed by a printhead arrangement, the printhead arrangement being movable in a print direction and comprising a plurality of printhead dies, wherein printhead dies adjacent to each other comprise an overlap area when viewed in the print direction. The print data to be printed are modified near and/or at the overlap areas between printhead dies of the printhead arrangement to compensate for drop placement.

Modifying print data near and/or at overlap areas between printhead dies

Certain examples described herein control an amount of a functional agent that is deposited in a three-dimensional printing system. In certain examples, an amount of a functional agent is controlled based on a distance function, wherein the distance function is associated with a distance between a particular portion of an object to be fabricated and a surface of the object. The functional agent may be a binder, a fusing agent or a detailing agent, amongst others.

Selective deposit of a functional agent

In an example, a data unit includes a mounting to removably mount the data unit on a receiving portion of an additive manufacturing build material container, a data source to provide data comprising a plurality of additive manufacturing parameters and a communications interface to communicate with a reader of an additive manufacturing build material processing apparatus. The communications interface is to transmit data from the data source to the additive manufacturing build material processing apparatus.

Data units for additive manufacturing

There is disclosed a non-transitory machine readable storage medium encoded with instructions executable by a processor and comprising instructions to: receive object data corresponding to a three-dimensional object to be generated; define print data for each of a plurality of slices of the object to control a respective layer forming operation in which print agent is ejected on a layer of build material in a pattern corresponding to selective fusing of the build material, wherein the print data and the respective pattern is defined for each slice according to object a print definition procedure; and select the print definition procedure from a plurality of print definition procedures based on a user input. There is also disclosed a corresponding method and additive manufacturing apparatus.

3D print definition procedures

In an example, a data unit includes a data unit mounting having a circuitry region, a registration portion, and a retaining feature. Circuitry comprising a data source to provide at least one additive manufacturing parameter is arranged on the circuitry region of the mounting. The data unit mounting is to be removably mounted on a receiving portion of an additive manufacturing build material component, such that the registration portion is to be received in a corresponding guide portion of the receiving portion of the additive manufacturing build material component, and the retaining feature is prevent removal of the data unit from the receiving portion unless deformed. Deformation of the retaining feature to effect removal of the data unit from the receiving portion may be a permanent deformation.

Data units for build material identification in additive manufacturing

Methods of generating a three-dimensional object with an additive manufacturing system are described. The method includes depositing a build material within a working area, thereby providing a build material layer, selectively depositing a fusing agent onto a portion of the build material layer, applying energy from a bulk-fusion energy source to the working area, thereby fusing at least a portion of the build material where the fusing agent is deposited, and applying energy from a focused energy source to one or more localized areas of the working area.

Hybrid fusion system

The present disclosure is drawn to fabric print media and a method of coating a fabric substrate to form a fabric print medium. The fabric print medium can comprise a primer layer applied to the fabric substrate, an ink-fixing layer applied to the primer layer, and an ink-receiving layer applied to the ink-fixing layer. The primer layer can include a first film-forming polymer and a fabric softening agent. The ink-fixing layer can comprise a second film-forming polymer and a cationic compound. The ink-receiving layer can comprise a third film-forming polymer and non-deformable particles. One or more of the primer layer, the ink-fixing layer, and the ink-receiving layer also further comprise a flame inhibitor. In one example, all of these three layers include the flame inhibitor.

Fabric print media

Implementations disclose a method and system for providing a self-adaptive image. According to one implementation, a first non-white ink layer on is deposited on a substrate. Furthermore, a white ink layer is deposited over the first non-white ink layer and below a second non-white ink layer deposited thereon.

Method and system for providing a self-adaptive image

A printer is disclosed. The printer is calibrated for use with colored media. The printer is calibrated by converting an original color look up table (CLUT) for use on any colored media to a modified CLUT for use on colored media with a measured color. Each of a plurality of output colors in the original CLUT are modified using the measured color of the media.

Printer calibration for media color

A print pen capping apparatus for a printer comprises a cap station carrying one or more caps, wherein the cap station is moveable between a retracted position in which the cap station is arranged at a side of a print media path and a capping position adjacent the media path for capping the print pen.

Print pen capping apparatus

A printer and a method of processing an image () to be printed with a printer which has a printing unit arranged to produce a printout from image-representing print data of the image, and a processing unit for processing image-representing input data of the image so as to generate the image-representing print data. The processing unit is arranged for separating the image into a line detail sub-image () containing edge and line details, and an area detail sub-image () containing area details, performing a first printing mode processing pipeline on the line detail sub-image and performing a second, different printing mode processing pipeline on the area detail sub-image, and generating multi-layer print mask data, wherein at least one print mask data layer is usable to print the line detail sub-image in at least one line detail print pass, and the remaining, i.e. at least one of the print mask data layers being used to print the area detail sub-image in at least one area detail print pass to produce an image () which has optimized image quality.

Processing an image into sub-images mapped into multi-layer print mask data

Methods and cassettes for discarding ink are disclosed. An example cassette includes a housing having a form factor to be received in a printer; a container to receive the discarded ink; and a memory to receive usage data from the printer, the usage data being indicative of an amount of the discarded ink received by the container.

Methods and cassettes for discarding ink

An image forming apparatus includes a normal consumption state, a low consumption state, and a fluid applicator unit. The fluid applicator unit may selectively provide a first set of drops of fluid to perform a printing routine in a print mode. The fluid applicator unit may also selectively provide a second set of drops of fluid to perform a service routine in a maintenance mode. An amount of the first set of drops of fluid to perform the printing routine and an amount of the second set of drops of fluid to perform the service routine may be less in the low consumption state than in the normal consumption state.

Growing community of inventors

Les Roquetes, Spain

Luis Garcia Garcia