Abstract: An example of a dispersion includes cesium tungsten oxide nanoparticles, a zwitterionic stabilizer, and a balance of water. An example of a jettable composition includes cesium tungsten oxide nanoparticles, a zwitterionic stabilizer, a surfactant, a co-solvent, and a balance of water. A method for improving the stabilization of a jettable composition includes incorporating a zwitterionic stabilizer in the jettable composition, which includes the cesium tungsten oxide nanoparticles, the surfactant, the co-solvent, and the balance of water.

Abstract: The present disclosure is drawn to food contact compliant three-dimensional printing kits, materials, compositions, systems, and methods. In one example, a multi-fluid kit of food contact compliant agents for three-dimensional printing can include a food contact compliant fusing agent and a food contact compliant detailing agent. The food contact compliant fusing agent can include from about 70 wt% to about 96 wt% water, from about 3 wt% to about 10 wt% by solids weight of a food contact compliant carbon black dispersion, and from about 1 wt% to about 25 wt% of a food contact compliant water-soluble first co-solvent. The food contact compliant detailing agent can include from about 75 wt % to about 99 wt% water and from about 0.01 wt% to about 1 wt% of a food contact compliant chelating compound.

Abstract: The present disclosure is drawn to food contact compliant three-dimensional printing kits and systems. In one example, a multi-fluid kit of food contact compliant agents for three-dimensional printing can include a food contact compliant fusing agent and a food contact compliant detailing agent. The fusing agent can include from about 70 wt % to about 96 wt % water, a food contact compliant carbon black dispersion in an amount of from about 3 wt % to about 10 wt % by solids weight of the carbon black dispersion, and food grade propylene glycol in an amount from about 1 wt % to about 15 wt %. The detailing agent can include from about 70 wt % to about 90 wt % water, food grade propylene glycol in an amount from about 10 wt % to about 25 wt %, and a food contact compliant chelating compound in an amount of from about 0.01 wt % to about 1 wt %.

Abstract: The present disclosure is drawn to food contact compliant three-dimensional printing kits, materials, compositions, systems, and methods. In some examples, described herein is an example of a multi-fluid kit for three-dimensional printing comprising: a food contact compliant fusing agent comprising: at least about 70 wt % water based on the total weight of the food contact compliant fusing agent, food contact compliant carbon black dispersion in an amount of from about 3 wt % to about 10 wt % based on the total weight of the food contact compliant fusing agent, and at least one food contact compliant water soluble first co-solvent present in the food contact compliant fusing agent in an amount of from about 1 wt % to about 25 wt % based on the total weight of the food contact compliant fusing agent.

Abstract: The present disclosure is drawn to food contact compliant three-dimensional printing kits, materials, compositions, systems, and methods, in some examples, described herein is a food contact compliant fusing agent comprising: at least about 75 wt % water based on the total weight of the food contact compliant fusing agent, food contact compliant carbon black dispersion in an amount of from about 3 wt % to about 10 wt % based on the total weight of the food contact compliant fusing agent, at least one food contact compliant water soluble first co-solvent present in the food contact compliant fusing agent in an amount of from about 1 wt % to about 25 wt % based on the total weight of the food contact compliant fusing agent, and at least one food contact compliant pH adjuster or at least one food contact compliant liquid additive.

Abstract: An example of a shipping and handling fluid for a three-dimensional (3D) printer is disclosed. The shipping and handling fluid includes a co-solvent, a first sugar alcohol, a second sugar alcohol, a surfactant, and a balance of water. The first sugar alcohol includes a ring structure, and the second sugar alcohol has a linear structure.

Abstract: An example of a dispersion includes cesium tungsten oxide nanoparticles, a zwitterionic stabilizer, and a balance of water. An example of a jettable composition includes cesium tungsten oxide nanoparticles, a zwitterionic stabilizer, a surfactant, a co-solvent, and a balance of water. A method for improving the stabilization of a jettable composition includes incorporating a zwitterionic stabilizer in the jettable composition, which includes the cesium tungsten oxide nanoparticles, the surfactant, the co-solvent, and the balance of water.

Abstract: A multi-fluid kit for three-dimensional printing can include a fusing agent and a coloring agent. The fusing agent can include an electromagnetic radiation absorber in a first liquid vehicle. The electromagnetic radiation absorber can absorb radiation energy and can convert the radiation energy to heat. The coloring agent can include a magenta rhodamine dye and a fluorescence quenching iodide salt in a second liquid vehicle. A molar ratio of the magenta rhodamine dye to the fluorescence quenching iodide salt can range from about 1:1 to about 1:10.

Abstract: An example of a dispersion includes cesium tungsten oxide nanoparticles, a zwitterionic stabilizer, and a balance of water. An example of a jettable composition includes cesium tungsten oxide nanoparticles, a zwitterionic stabilizer, a surfactant, a co-solvent, and a balance of water. A method for improving the stabilization of a jettable composition includes incorporating a zwitterionic stabilizer in the jettable composition, which includes the cesium tungsten oxide nanoparticles, the surfactant, the co-solvent, and the balance of water.

Abstract: An additive manufacturing system may include a fluid ejector. The fluid ejector may be movable across a build material distributor at a maximum speed of less than or equal to 40 inches per second. The fluid ejector may include a nozzle having a non-circular bore.

Abstract: Disclosed herein are kits, methods, systems, and compositions for threedimensional printing. In an example, disclosed herein is a multi-fluid kit for threedimensional printing comprising: a marking agent comprising a marking component which is a fluorescent color agent that is activated by ultraviolet radiation to emit light in the visible range of from about 400 nm to about 780 nm; a first fusing agent; a second fusing agent different from the first fusing agent; and a detailing agent.

Abstract: An example of a dispersion includes cesium tungsten oxide nanoparticles, a zwitterionic stabilizer, and a balance of water. An example of a jettable composition includes cesium tungsten oxide nanoparticles, a zwitterionic stabilizer, a surfactant, a co-solvent, and a balance of water. A method for improving the stabilization of a jettable composition includes incorporating a zwitterionic stabilizer in the jettable composition, which includes the cesium tungsten oxide nanoparticles, the surfactant, the co-solvent, and the balance of water.

Abstract: An additive manufacturing system may include a fluid ejector. The fluid ejector may be movable across a build material distributor at a maximum speed of less than or equal to 40 inches per second. The fluid ejector may include a nozzle having a non-circular bore.

Abstract: In an example of a three-dimensional printing method, a polymeric build material is applied. A fusing agent is selectively applied on at least a portion of the polymeric build material. The fusing agent includes cesium tungsten oxide nanoparticles, a zwitterionic stabilizer, and an aqueous vehicle. The polymeric build material is exposed to electromagnetic radiation to fuse the portion of the polymeric build material in contact with the fusing agent to form a layer.

Abstract: In an example of a three-dimensional printing method, a polymeric build material is applied. A fusing agent is selectively applied on at least a portion of the polymeric build material. The fusing agent includes cesium tungsten oxide nanoparticles, a zwitterionic stabilizer, and an aqueous vehicle. The polymeric build material is exposed to electromagnetic radiation to fuse the portion of the polymeric build material in contact with the fusing agent to form a layer.

Abstract: A printer is disclosed herein. The printer has a printhead having a plurality of ink nozzles for ejecting ink, a servicing mechanism for capturing the ejected ink from the ink nozzles, to service the printhead, and a control device coupled to the printhead and the servicing mechanism for regulating the servicing. As part of the regulation, the control device continues feeding a substrate towards the printhead during an idle period. The idle period of the printhead can be a duration when printing on the substrate is suspended. Further, the control device regulates ejection of ink from the ink nozzles towards the substrate during the idle period and operates the servicing mechanism during the idle period. In an example, the servicing mechanism captures the ink before the ink reaches the substrate.

Abstract: A printer is disclosed herein. The printer has a printhead having a plurality of ink nozzles for ejecting ink, a servicing mechanism for capturing the ejected ink from the ink nozzles, to service the printhead, and a control device coupled to the printhead and the servicing mechanism for regulating the servicing. As part of the regulation, the control device continues feeding a substrate towards the printhead during an idle period. The idle period of the printhead can be a duration when printing on the substrate is suspended. Further, the control device regulates ejection of ink from the ink nozzles towards the substrate during the idle period and operates the servicing mechanism during the idle period. In an example, the servicing mechanism captures the ink before the ink reaches the substrate.

Abstract: A method includes applying a nominal back pressure to a fluid ejection assembly and nozzles to form a first amount of back pressure therein by a back pressure regulator. The method also includes applying a first pressure to lower the first amount of back pressure within the fluid ejection assembly and the nozzles to form a second amount of back pressure therein by a pressurization module in response to an activation of a cleaning operation. The method also includes moving at least one of the fluid ejection assembly and a wicking member against each other to perform the cleaning operation. The wicking member moves relative to the fluid ejection assembly against and across the nozzle surface to transfer fluid residue from at least one of the nozzle surface and the nozzles to a portion of the wicking member to form a used wicking member portion.

Abstract: A method includes applying a nominal back pressure to a fluid ejection assembly and nozzles to form a first amount of back pressure therein by a back pressure regulator. The method also includes applying a first pressure to lower the first amount of back pressure within the fluid ejection assembly and the nozzles to form a second amount of back pressure therein by a pressurization module in response to an activation of a cleaning operation. The method also includes moving at least one of the fluid ejection assembly and a wicking member against each other to perform the cleaning operation. The wicking member moves relative to the fluid ejection assembly against and across the nozzle surface to transfer fluid residue from at least one of the nozzle surface and the nozzles to a portion of the wicking member to form a used wicking member portion.

Abstract: A printer for printing on a print medium includes a print module supporting at least one printhead having ink orifices formed in a front face thereof through which ink drops are ejected into a print zone between the printhead and the print medium during printing, and a member extending beyond the front face of the printhead toward the print medium from the print module adjacent the printhead, wherein the member disrupts a boundary layer of air in the print zone between the printhead and the print medium during printing.