Hewlett-packard Development Company, L.p.

Daniel Fradl

Dennis Raymond Esterberg

Curt G Gonzales

David Sabo

Christie Dudenhoefer

Kenneth Ward

Eric G Nelson

Matthew David Smith

Bradley D Chung

Galen P Cook

Evgeny Korol

Eric L Ahlvin

Joseph W Stellbrink

William E Lewey

Edward Savage

Vignesh Kannan

Mark A Ramsdell

Carl R Reid

According to examples, an apparatus may include a processor and a memory on which are stored machine-readable instructions that when executed by the processor, cause the processor to access a 3D model of a 3D object to be fabricated and apply a deformation model to the 3D model. In some examples, the processor may generate a modified 3D model that compensates for a determined deformation of the 3D object during a sintering process for the 3D object. In some examples, the deformation model may include a densification component associated with a density of the 3D object and a deformation component associated with mechanical loads on the 3D object. The densification component may have initial state values associated with the density of the 3D object during the sintering process.

Modification of a 3D model of a 3D object

In one example in accordance with the present disclosure, a fluid ejection controller is described. The fluid ejection controller includes a firing board to pass control signals to a fluid ejection device to eject fluid from the fluid ejection device. A mount pivotally holds the firing board between a disengaged position where electrical pins of the firing board are not in contact with electrical pads of the fluid ejection device and an engaged position where the electrical pins are in contact with the electrical pads. The mount includes a slot to receive the fluid ejection device and at least one biasing spring to bias the firing board away from the fluid ejection device during insertion of the fluid ejection device. The fluid ejection controller also includes a handle coupled to a cam shaft to move the firing board between the disengaged position and the engaged position.

Fluid ejection controllers to pivotally hold firing boards

In one embodiment a fluid container includes a housing having a chamber therein for holding a fluid and an outlet from the chamber; and a cap capping the outlet. The cap includes a contact surface thereon contacting an interior surface of the outlet and a void therein adjacent to the contact surface such that a portion of the cap underlying the contact surface may flex into the void.

Cap for a fluid container outlet

A developer flows ink from the ink inlet chamber along a first side of a first electrode, through a gap between the first electrode and a developer roller and back to the inlet chamber.

Liquid electrophotography ink developer

A thermal resistor fluid ejection assembly includes an insulating substrate and first and second electrodes formed on the substrate. A plurality of individual resistor elements of varying widths are arranged in parallel on the substrate and electrically coupled at a first end to the first electrode and at a second end to the second electrode.

Thermal resistor fluid ejection assembly

In one embodiment, a reservoir for holding a fluid includes a housing defining an enclosed chamber, the housing having a first opening therein at one part of the chamber and a second opening therein at a second part of the chamber above the first part of the chamber, a breachable seal sealing the second opening, and a circuitous tunnel exposing the chamber to the atmosphere through the second opening if the seal is breached.

Breachable seal

Growing community of inventors

Corvallis, OR, United States of America

Daniel Fradl