Hewlett-packard Development Company, L.p.

Other

Metallic Power, Inc.

Bernardo A Gutierrez

Michael A Novick

Jacob Wright

Alexey S Kabalnov

Ali Emamjomeh

Keshava A Prasad

Stephen G Rudisill

Andre Garcia

Stan Markwell

Joan Mach Beneyto

Lihua Zhao

Michael D Derocher

Sergio Puigardeu Aramendia

Geoffrey Schmid

Stuart I Smedley

Andrew E Fitzhugh

Jeffrey A Colborn

Sergi Culubret

Ignacio Alejandre

Kent I Smedley

Anton Tabar

Samuel A Lucente

Brandon Phong Khieu

Peter A Ward

Adam M Harriss

Karel J Marsal

Daniel W Gilbert

Behrang Khorsandian

Jacob Tyler Wright

Jacob T Wright

A multi-fluid kit for three-dimensional printing includes a fusing agent and a fluorescing detailing agent. The fusing agent includes water and a radiation absorber. The radiation absorber absorbs radiation energy and converts the radiation energy to heat. The fluorescing detailing agent includes water and a fluorescent colorant that is active by exposure to ultraviolet energy to emit light in the visible range of from about 400 nm to about 780 nm. The multi-fluid kit is devoid of a second detailing agent and a second fluorescent colorant.

Three-dimensional printing

A build material conveyor is disclosed. Such conveyor comprising an auger to transport build material in a substantially vertical direction wherein the conveyor further comprises a set of wall elements selectively positioned to, in a first position occupy part of the volume of the auger.

Build material conveyors

The present disclosure is drawn to material sets and 3-dimensional printing systems that include a fusing agent. One example of a material set can include a fusing agent and a detailing agent. The fusing agent can include water, a carbon black pigment, and a water-soluble co-solvent in an amount from 20 wt % to 60 wt %. The detailing agent can include water and a black dye. In another example, a material set can include a fusing agent and a thermoplastic polymer powder.

Material sets

At least one agent distributor may be to selectively deliver coalescing agent onto portions of a layer of build material at a first density and at a second density lower than the first density. A controller may be to control the at least one agent distributor to selectively deliver the coalescing agent at the first and second densities onto respective first and second portions of the layer in respective first and second patterns derived from data representing the three-dimensional object to be generated, so that when energy is applied to the layer the build material may coalesce and solidify to form a slice of the three-dimensional object in accordance with the first pattern. The second portion may be in proximity to a boundary of the first portion. Presence of the coalescing agent in the second portion may be to prevent at least some heat from flowing away from the first portion when the energy is applied.

Generating three-dimensional objects

An agent distributor may be to selectively deliver agent at a first contone density and at a second contone density different from the first contone density respectively onto an interior portion and a surface portion of successive layers of build material in respective first and second patterns in accordance with data representing a three-dimensional object to be generated, so that the build material is to solidify to form slices of the three-dimensional object in accordance with the first and second patterns, and so that the three-dimensional object is to achieve a target surface roughness as a result of the second contone density of the second pattern.

Generating three-dimensional objects with target surface roughness

Rotary cutter guide

Kiosk

A novel fuel particle feeding mechanism that significantly improves operation of a refuelable electrochemical power source is provided. One embodiment of the mechanism provides an input of electrolyte and electrochemically active particles into one or more electrochemical cells through a feed tube. The feed tube has several embodiments that improve the flow of electrolyte and particles, and the even and complete settling of particles into individual cell cavities. Each cell cavity is completely filled, evenly and without clogging when open, and fluid communication between cell cavities is completely cut off when closed, to prevent short-circuiting of the power source during discharge or standby. Means are provided to prevent clogging of the feed tube with fuel particles, to promote complete filling of the cell cavities with fuel, and to prevent fuel particles from prematurely flowing out of the cell cavities. A method of operation is also described.

Particle feeding apparatus for electrochemical power source and method

Growing community of inventors

San Diego, CA, United States of America

Bernardo A Gutierrez