Abstract: A system for forming a product with different size particles is disclosed. The system comprises at least one print head region configured to retain a first group of print heads configurable to additively print at least a first portion of the product with a first material and a second group of print heads configurable to additively print at least a second portion of the product with a second material. The described system may also comprise a processor configured to regulate the first group of print heads and the second group of print heads to distribute the first material and the second material. A method of making an object by ink jet printing using the disclosed system is also disclosed.

Abstract: A system for forming a product with different size particles is disclosed. The system comprises at least one print head region configured to retain a first group of print heads configurable to additively print at least a first portion of the product with a first material and a second group of print heads configurable to additively print at least a second portion of the product with a second material. The described system may also comprise a processor configured to regulate the first group of print heads and the second group of print heads to distribute the first material and the second material. A method of making an object by ink jet printing using the disclosed system is also disclosed.

Abstract: An ink composition for use as a support ink in three dimensional (3D) printing processes comprises a dispersion of solid particles in liquid carder, compatible with an inkjet print head, wherein after removing the liquid carder, the solid particles serve as support material for a Three Dimensional (3D) printed object, wherein the support material is separable from the 3D printed object.

Abstract: A system for forming a product with different size particles is disclosed. The system comprises at least one print head region configured to retain a first group of print heads configurable to additively print at least a first portion of the product with a first material and a second group of print heads configurable to additively print at least a second portion of the product with a second material. The described system may also comprise a processor configured to regulate the first group of print heads and the second group of print heads to distribute the first material and the second material. A method of making an object by ink jet printing using the disclosed system is also disclosed.

Abstract: 3D (three-dimensional) ink-jet printing includes techniques for evaporating a carrier liquid during printing while at least a portion of dispersant remains in the printed layer; evaporating dispersant in a first layer prior to sintering the first layer and/or prior to printing a second layer; leveling an upper-layer of a printed object using a horizontal roller; and printing layers of an object, each layer with both object and support portions, resulting in an object with support, in particular, support for negative angles and molds.

Abstract: An ink composition for use as a support ink in three dimensional (3D) printing processes comprises a dispersion of solid particles in liquid carrier, compatible with an inkjet print head, wherein after removing the liquid carrier, the solid particles serve as support material for a Three Dimensional (3D) printed object, wherein the support material is separable from the 3D printed object.

Abstract: An ink composition for use as a support ink in three dimensional (3D) printing processes comprises a dispersion of solid particles in liquid carder, compatible with an inkjet print head, wherein after removing the liquid carder, the solid particles serve as support material for a Three Dimensional (3D) printed object, wherein the support material is separable from the 3D printed object.

Abstract: A system for forming a product with different size particles is disclosed. The system comprises at least one print head region configured to retain a first group of print heads configurable to additively print at least a first portion of the product with a first material and a second group of print heads configurable to additively print at least a second portion of the product with a second material. The described system may also comprise a processor configured to regulate the first group of print heads and the second group of print heads to distribute the first material and the second material. A method of making an object by ink jet printing using the disclosed system is also disclosed.

Abstract: 3D (three-dimensional) ink jet printing includes techniques for evaporating a carrier liquid during printing while at least a portion of dispersant remains in the printed layer; evaporating dispersant in a first layer prior to sintering the first layer and/or prior to printing a second layer; leveling an upper-layer of a printed object using a horizontal roller; and printing layers of an object, each layer with both object and support portions, resulting in an object with support, in particular, support for negative angles and molds.

Abstract: An ink composition for use as a support ink in three dimensional (3D) printing processes comprises a dispersion of solid particles in liquid carrier, compatible with an inkjet print head, wherein after removing the liquid carrier, the solid particles serve as support material for a Three Dimensional (3D) printed object, wherein the support material is separable from the 3D printed object.

Abstract: A piezoelectric crystal element and a sensor utilizing the same are presented for use in a sensor device for identifying at least one foreign material from environment. The crystal element comprises at least one crystal resonator in the form of a inverted mesa structure, which has a membrane-like region and has a certain resonance frequency value. A surface region of the crystal resonator is modified by reactive molecules of a kind capable of interacting with the foreign material to yield a reaction product that effects a change in the resonance frequency of the crystal resonator from said certain resonance frequency value. This change is indicative of the identity and quantity of the foreign material.