Abstract: A three-dimensional (3D) object printer has an ejector head with a single nozzle that is fluidly connected to a plurality of orifices in an orifice plate of the ejector head. An ejection of material through the single nozzle is emitted through the plurality of orifices simultaneously. In one embodiment, some of the orifices are oriented at an angle to an axis perpendicular to the orifice plate. This configuration enables a structure to be formed with a predetermined material density without needing to increase the ejection frequency significantly or requiring the printer to incorporate multiple ejector heads.

Abstract: A method of forming a three-dimensional printed part is disclosed, including ejecting a drop of print material from an ejector for a printing system in a substantially vertical trajectory, directing a stream of inert gas toward the drop of print material from a first direction, and diverting the drop of print material from the substantially vertical trajectory prior to the drop of print material landing onto a surface. The method includes directing a stream of inert gas toward the drop of print material from other directions. A printing system includes at least a first channel oriented in a first plane parallel to the substrate and positioned between the substrate and the ejector, and a gas supply connected to the first channel.

Abstract: A printing system and method of forming a three-dimensional printed part in a printing system is disclosed, including forming a three-dimensional printed part in a printing system includes depositing a first print material onto a substrate or a partially formed three-dimensional metal part, depositing a second print material may include an oxidizing agent onto the partially formed three-dimensional part, and forming an oxidized layer on a top surface of the partially formed three-dimensional part.

Abstract: A three-dimensional (3D) metal object manufacturing apparatus is equipped with a vessel having a receptacle that holds melted metal. The vessel has one or more electrical coils positioned at an upper end of the vessel near an inlet for solid metal that is melted within the receptacle. AC electrical current is passed through the one or more electrical coils to produce traveling magnetic fields in the melted metal at the upper end of the receptacle in the vessel to stir the melted metal and attenuate the formation of dross in the melted metal.

Abstract: A printed structure, and systems and methods for creating the printed structure are disclosed. The printed structure includes a substrate, a first printed image layer, and a second printed image layer printed at least partially over the first printed image layer. The first printed image layer includes a first variable image printed using a first electrophoretic ink and the second printed image layer includes a second variable image printed using a second electrophoretic ink. The first variable image and the second variable image are configured to selectively change their display states upon application of an electric field.

Abstract: A three-dimensional (3D) object printer has an ejector head with a single nozzle that is fluidly connected to a plurality of orifices in an orifice plate of the ejector head. An ejection of material through the single nozzle is emitted through the plurality of orifices simultaneously. In one embodiment, some of the orifices are oriented at an angle to a normal to the plane of the orifice plate. A splicer of the printer that generates machine ready instructions for operation of the printer identifies a standoff distance between the orifice plate and a surface onto which drops are being ejected to achieve a target drop spacing for the drops ejected onto the surface. In this manner, a material density for structure within a layer can be achieved without needing to increase the ejection frequency significantly or requiring the printer to incorporate multiple ejector heads.

Abstract: A transfer member for a printing device includes a shaft, a rigid cylindrical core member, mounted on the shaft, an outer layer supported on the rigid cylindrical core member, and optionally a conformable intermediate layer, spacing the cylindrical core member from the outer layer. The outer layer defines an outer surface of the transfer member, and is configured for receiving a toner image thereon. The cylindrical core and outer layer have a same axis of rotation as the shaft. The rigid cylindrical core and/or the conformable intermediate layer, where present may be electrically biased, relative to a photoconductor drum of the printing device.

Abstract: The present teachings include a flow coating solution, a fuser member and an image forming apparatus. The fuser member includes a substrate and flow coating solution applied onto the substrate. The outer layer includes a flow coating solution including a fluoroelastomer, a nucleophilic crosslinking agent and a non-functional polydimethylsiloxane having the formula: wherein n is from 100 to 20,000. The flow coating solution includes an effective solvent selected from the group consisting of N-methyl 2-pyrrolidone, dimethyl formamide, and dimethyl sulfoxide.

Abstract: A print configuration system will receive, from a first sensing modality, a first message indicating that a user has entered a first region where a print device is located. The system will access a profile for the user to identify a first configuration task, and it will cause the print device to perform the first configuration task. The system will later receive, from a second sensing modality that is different from the first sensing modality, a second message indicating that the user has entered a second region. The second region includes the print device and is a subset of the first region. In response to receiving the second message, the system will cause the print device to perform a second task that is different from the first configuration task.

Abstract: A printable antimicrobial medium is disclosed, including a substrate layer having a first surface which may include a first area, a second surface opposite the first surface which may include a second area. The printable antimicrobial medium also includes a first adhesive deposited on the first area, a liner layer releasably secured to the substrate layer by the first adhesive, and a first antimicrobial dry marking material deposited on at least a portion of the second area of the substrate layer. The printable antimicrobial medium may include a first score line arranged to separate one or more layers of the printable antimicrobial medium into a first portion and a second portion, and an antimicrobial dry marking material may include copper oxide deposited on at least a portion of the second area of the substrate layer.

Abstract: A white toner having toner particles including: a resin; a BaSO4 pigment; wherein a particle size is defined as Span=(Dn90?Dn10)/(Dn50); and wherein the BaSO4 pigment has a wide particle size distribution wherein the Span is 0.75 or greater; and an optional wax. A pulverized (conventional) toner and an emulsion aggregation toner process.

Abstract: An aqueous inkjet ink composition including water; an optional co-solvent; an optional dispersant; an optional resin; an optional wax; and a BaSO4 pigment; wherein a particle size distribution is defined as Span=(Dn90?Dn10)/(Dn50); and wherein the BaSO4 pigment has a wide particle size distribution wherein the Span is 0.75 or greater.

Abstract: A printed structure, and systems and methods for creating the printed structure are disclosed. The printed structure includes a substrate, a first printed image layer, and a second printed image layer printed at least partially over the first printed image layer. The first printed image layer includes a first variable image printed using a first electrophoretic ink and the second printed image layer includes a second variable image printed using a second electrophoretic ink. The first variable image and the second variable image are configured to selectively change their display states upon application of an electric field.

Abstract: A method for operating a three-dimensional (3D) metal object manufacturing apparatus selects operational parameters for operation of the printer to form vias in substrates. The method identifies the bulk metal being melted for ejection and uses this identification data to select the operational parameters. The method identifies the via holes in the substrate and operates an actuator to position an ejector opposite the via holes to eject drops of melted bulk metal toward the via holes to fill the via holes.

Abstract: Nozzles for an additive manufacturing device and methods for improving wettability of the nozzles are disclosed. The method may include subjecting the nozzle to a surface treatment. The surface treatment may include contacting a surface of the nozzle with one or more surface modifying agents. The surface modifying agents may include one or more of an oxidizing agent, an acid, a base, or combinations thereof. The one or more surface modifying agents may increase an oxygen content of the surface of the nozzle. An inner surface of the nozzle may have a water contact angle of greater than 1° and less than about 90°. The inner surface of the nozzle may be free or substantially free of a coating.

Abstract: Provided herein is a topcoat composition comprising at least one fluorosilicone, a hydride-functional crosslinking agent, an infrared-absorbing filler, and at least one dispersant that is non-reactive with the hydride-functional crosslinking agent, by weight based on a total weight of the topcoat composition, wherein the topcoat composition has a degree of crosslinking between about 10 micrograms/hour/milligrams to about 20 micrograms/hour/milligrams. Further provided herein are methods of making the topcoat composition, as well as an imaging blanket and methods of reducing coating defects on a media coated using the imaging member.

Abstract: A method of operating an inkjet printer operates solvent vapor generators that direct two flows of solvent vapor towards media on each side of each printhead in the process direction. The solvent vapor attenuates the evaporation of ink solvent from ink drops on the nozzle plates or from the ink in the nozzles of the printheads. Thus, the ink on the nozzle plates and in the nozzles does not dry out and the operational status of the inkjets is preserved.

Abstract: A three-dimensional (3D) metal object manufacturing apparatus selects operational parameters for operation of the printer to form vias in substrates. The apparatus identifies the bulk metal being melted for ejection and uses this identification data to select the operational parameters. The apparatus identifies the via holes in the substrate and positions an ejector opposite the via holes to eject drops of melted bulk metal toward the via holes to fill the via holes.

Abstract: A three-dimensional (3D) metal object manufacturing apparatus has a plurality of thermally insulative members that float in a volume of heat transfer lubricating fluid in which a X-Y translation mechanism moves to position a platform opposite an ejector. The apparatus also includes a housing having an internal volume in which the platform and X-Y translation mechanism are located. The heat transfer lubricating fluid can be a molten salt, such as a molten fluoride, chloride, or nitrate molten salt. The thermally insulative members can be spheres made of zirconium oxide or zirconium dioxide. The thermally insulative layer formed by the members floating in the fluid protects the X-Y mechanism while the housing helps keep the surface temperature of the object being formed on the platform in an optimal range for bonding of melted metal drops ejected from the ejector to a surface of a metal object being formed on the platform.

Abstract: Disclosed herein is a substrate cooling unit for use with a duplex aqueous ink jet image forming device. The substrate cooling unit includes a first transport belt that is in contact with a portion of an outer surface of the first cooling roll to substantially sandwich individual sheets of image receiving media between a first cooling roll and the first transport belt. The substrate cooling unit includes a second cooling roll positioned downstream of the first cooling roll in a process direction and a second transport belt that is in contact with a portion of an outer surface of the second cooling roll to substantially sandwich the individual sheets of image receiving media between the second cooling roll and the second transport belt. The second transport belt includes a bottom layer of woven or non-woven fibers and a top rubber layer.