Abstract: A three-dimensional (3D) printer includes an ejector and a coil wrapped partially around the ejector. The 3D printer also includes a power source configured to transmit voltage pulses to the coil. The 3D printer causes one or more drops of the liquid to be jetted out of the nozzle, and a substrate configured to support the one or more drops and advance along a path defined by one or more arcuate contours, where the one or more arcuate contours define a first layer of a strut. One or more struts are printed from the first layer of the strut to a node of each strut. The one or more struts are printed from a first layer to a node and combine to fabricate a lattice structure including one or more vertical struts and/or one or more angled struts wherein each strut intersects with another strut at a node.

Abstract: An inkjet printer includes solvent vapor generators that direct two flows of solvent vapor on each side of each printhead in the process direction toward media passing the printheads in the printer. 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: An inkjet printer includes solvent vapor generators that direct two flows of solvent vapor on each side of each printhead in the process direction toward media passing the printheads in the printer. 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 system and method provide for automated evaluation of reference point pairs. For each of a set of reference point pairs in an input color space, a straight line connecting the reference points is sampled to generate a set of sampled points. Each of the set of sampled points in the input color space is converted to a sampled point in an output color space. For each of a set of color separations in the output color space, discontinuities are identified, based on the set of sampled points in the output color space. Candidate reference point pairs are identified in the set of reference point pairs for which at least one discontinuity is identified. The candidate reference point pairs can be validated by printing test sweeps, which are each derived from a respective set of sampled points in the output color space, and identifying contour artifacts in the printed test sweeps.

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: A method of operating a printer supplies an ink solvent or mixture of ink solvents to porous members positioned adjacent printheads. The ink solvent or solvent mixture evaporates from the porous members to provide a solvent vapor environment in the vicinity of the nozzle plates of the printheads. The solvent vapor environment 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) printer includes an ejector having a nozzle. The 3D printer also includes a heating element configured to heat a solid metal in the ejector, thereby causing the solid metal to change to a liquid metal within the ejector. The 3D printer also includes a coil wrapped at least partially around the ejector. The 3D printer also includes a power source configured to supply one or more pulses of power to the coil, which cause one or more drops of the liquid metal to be jetted out of the nozzle. The 3D printer also includes a substrate configured to support the one or more drops as the one or more drops solidify to form a 3D object. The 3D printer also includes a gas source configured to cause an oxygen concentration to be less than about 5% proximate to the one or more drops, the 3D object, or both.

Abstract: A method of operating a printer supplies an ink solvent or mixture of ink solvents to porous members positioned adjacent printheads. The ink solvent or solvent mixture evaporates from the porous members to provide a solvent vapor environment in the vicinity of the nozzle plates of the printheads. The solvent vapor environment 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 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: An antimicrobial toner particle composition is disclosed. The antimicrobial toner particle composition includes a binder resin, and an antimicrobial material in an effective antimicrobial amount comprising copper oxide. An image forming apparatus is also disclosed, capable of forming a fused antimicrobial image on a recording medium.

Abstract: Disclosed herein is a substrate cooling unit for use with a duplex aqueous ink jet image forming device. The substrate cooling unit including a first cooling roll. a first transport belt, a second cooling roll positioned downstream of the first cooling roll in a process direction and a second transport belt. The first and second transports belts include a bottom layer of a fiber mesh impregnated with a polydimethylsiloxane, where the fiber mesh is selected from cotton, polyester, and nylon. The first and second transport belts include an optional intermediate adhesive layer and an optional top layer of silicone having an extractable level of less than 4 percent. The substrate cooling unit includes an invertor.

Abstract: A method of operating a printer distributes inkjet operations from frequently used inkjets to lesser used inkjets. The redistribution of the inkjet operations helps reduce the number of inkjets exhibiting cross-process direction error so printhead maintenance operations, such as purging, occur less frequently.

Abstract: A process including providing a paper substrate; disposing a water soluble precoat composition onto all or a portion of the paper substrate to provide a treated paper; applying an image onto the treated paper using a toner or an aqueous ink to provide an imaged paper; wherein the water soluble precoat composition forms a temporary barrier between the toner or aqueous ink and the paper substrate; and wherein, during a paper pulping process, the water soluble precoat composition dissolves thereby releasing the toner or aqueous ink from the paper substrate.

Abstract: Disclosed herein is a release fluid, a fuser member and an image forming apparatus. The release fluid includes an amino functional silicone fluid, a non-functional silicone fluid; and vitamin E.

Abstract: A method of operating a printer distributes inkjet operations from frequently used inkjets to lesser used inkjets. The redistribution of the inkjet operations helps reduce the number of inkjets exhibiting cross-process direction error so printhead maintenance operations, such as purging, occur less frequently.

Abstract: A development system includes a housing configured for accommodating a developer material which includes toner particles. At least one magnetic roller is positioned within the housing to attract the developer material to a surface of the magnetic roller(s). A continuous developer belt is positioned to attract the toner particles from the at least one magnetic roller to a surface of the developer belt. The developer belt is carried on a plurality of developer rollers. One of the developer rollers is positioned adjacent to an image transfer member, such as a belt or drum, with a photoconductive surface. Some of the toner particles are transferred to a latent image formed on the image transfer member to generate a toner image layer, which is applied to a sheet of print medium.

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.

Abstract: A method of operating a printer separates the image data content of a sheet in a print job into multiple color separations. The first color separation printed on the sheet includes at least two fiducials printed in the least perceptible color of ink in the printer. The at least two fiducials are used to identify the process direction and skew of the printed sheet before the remaining color separations are printed on the sheet with the first color separation.

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: A multilayer imaging blanket for a variable data lithography system, including a multilayer base including a sulfur-containing layer; and a cured topcoat layer including a polyurethane in contact with the sulfur-containing layer of the multilayer base.