Abstract: In an example, an apparatus includes a first sensor, a second sensor, and a controller. The first sensor collects a first set of data describing a three-dimensional object that is placed in a constant position in a scene. The second sensor collects a second set of data describing the three-dimensional object. The first sensor has a first position in the scene, while the second sensor has a second position in the scene. The controller generates a first rendering of the three-dimensional object from the first set of data and generates a second rendering of the three-dimensional object from the second set of data. The controller also determines the first position and the second position based on an alignment of the first rendering and the second rendering with a three-dimensional model of the three-dimensional object.

Abstract: Printers and associated printer maintenance methods and apparatus are disclosed. An example printer includes a nozzle to dispense fluid; a wiper to wipe the nozzle during a maintenance event; and a controller to cause the nozzle to dispense fluid during the maintenance event while the wiping material engages or is immediately adjacent the nozzle to deter a substance from being present within the nozzle.

Abstract: An additive manufacturing build material fusing apparatus may include a housing, a window, a thermal reflector between the housing and the window, a first interior behind the reflector between the housing and the reflector, a second interior in front of the reflector between the reflector and the window, a heating device in the second interior, an airflow passage and a fan. The heating device may include at least one heating unit. The airflow passage may have an inlet connected to the first interior, a connector passage connecting the first interior to the second interior and an outlet connected to the second interior. The fan moves air along the airflow passage.

Abstract: An example two-part seal for a powder-based 3-D printer includes a flexible film wiper attached to a rectangular platform and disposed on linear segments of a perimeter of the platform. The flexible film wiper extends beyond the perimeter of the platform to provide a sliding seal against corresponding walls of a rectangular enclosure of the platform. The two-part seal also includes a deformable member disposed upon the flexible film wiper that extends beyond the perimeter of the platform to apply sealing pressure to the flexible film wiper.

Abstract: A device to de-ionize a build material, a method to de-ionize, and a 3D printer system including the device are disclosed. The device includes a housing having an outlet port and an enclosed sieve within the housing. An inlet port is coupled to a first end the enclosed sieve to provide the build material. A drive actuator is coupled to a second end of the enclosed sieve. The housing and the enclosed sieve may be made of a polymer selected from the build material and a chemically-similar polymer to the build material.

Abstract: Examples include a fluidic die. The fluidic die comprises an array of field effect transistors. Connecting members electrically connect at least some of the field effect transistors of the array of field effect transistors, and the field effect transistors of the array are arranged into respective sets of field effect transistors. The fluidic die further comprises a first fluid actuator connected to a first set of field effect transistors having a first number of field effect transistors. The die includes a second fluid actuator connected to a second respective set of field effect transistors having a second number of field effect transistors that is different than the first number of field effect transistors.

Abstract: Examples disclosed herein provide a computing device. As an example, the computing device includes a camera comprising a lens, and a housing comprising an opening extending through the housing, wherein the opening is to accommodate the lens. The housing further includes a shutter to selectively obscure the opening, and a mechanical trigger, upon receiving an electrical signal, to move the shutter to obscure the opening.

Abstract: In an example, a method is described that includes generating a model for fabricating an object via an additive manufacturing process. The model includes a first region defining the object and a second region defining a sacrificial artifact. The object is fabricated via the additive manufacturing process, using a fusing printing fluid.

Abstract: A three-dimensional (3D) printer includes a selective solidification module to selectively solidify portions of successive layers of a build material on a build platform. The 3D printer also includes a cartridge receiver to hold a removable material cartridge that accepts material from the 3D printer and makes material available to the 3D printer for printing of the 3D object.

Abstract: A three-dimensional (3D) printer material cartridge for a 3D printer includes an indicator disposed on an exterior surface of the 3D printer material cartridge. The indicator colorant is responsive to energy from an energy source of the 3D printer. The indicator is a message that becomes visible in response to exposure of the colorant to the energy.

Abstract: A computing device may include a processor and a display device communicatively coupled to the processor wherein the display device includes a wide gamut mode wherein the wide gamut mode comprises a plurality of different gamut profiles and wherein the display device adjusts from a first gamut profile to a second gamut profile based on a gamut profile associated with an image to be represented on the display device.

Abstract: A method of printing images in a liquid electrophotographic printer is provided. In an example, the method comprises measuring at least one current associated with an image development unit of the liquid electrophotographic printer. A first time at which a peak occurs in the measured current is determined; the first time indicates that a printing substance is transferred from a point on a developer roller of the image development unit to a photo imaging member of the liquid electrophotographic printer at a first location within the image development unit. A second time at which said point on the developer roller is expected to contact the cleaner roller within the image development unit is calculated and, at the second time, a voltage applied to the cleaner roller is controlled to reduce the potential difference between the cleaner roller and the developer roller.

Abstract: Example implementations relate to display adjustments. For example, a non-transitory computer readable medium storing instructions executable by a processing resource to sense a contour of an object using a sensor of a display. The instructions can cause the processing resource to determine a contour of a perimeter of the display that fits a portion of the shape of the object. The instructions can cause the processing resource to adjust the perimeter of the display to the determined contour of the perimeter via an actuator of the display.

Abstract: Some examples include a thermal imaging assembly, comprising a thermal sensor having a field of view and optics, an emitting source to validate the optics in the field of view, an emitter storage to selectively house the emitting source outside of the field of view, and a carrier to move the emitting source between the emitter storage and the field of view.

Abstract: A power device protection system comprising a front-end monitoring device to acquire electrical operation data at an input side of a power supply circuit, a controller to receive the electrical operation data from the front-end monitoring device, wherein the controller determines an electrical parameter of the power supply circuit based on the electrical operation data and a load at the output side of the power supply circuit, and wherein the controller compares the determined electrical parameter of the power supply circuit and a threshold value associated with a defined operating condition.

Abstract: It is disclosed a 3D printing system comprising a carriage and a carriage for 3D printing systems comprising: at least one tool to act on build material over a spreading platform wherein the carriage is movable over the spreading platform along a travel direction; and a deflector that extends from the tool and/or the carriage in at least the travel direction as to prevent build material from moving upwards.

Abstract: A method is described in which electronic circuitry of a mobile device is powered by a plurality of battery cells that are selectably connectable in series and in parallel. The energy utilization of the circuitry is measured during operation. The power efficiency for series and parallel configurations of the battery cells is determined based on the measured energy utilization. The battery cells are configured in series or in parallel based on which of the series and parallel configurations is determined to provide a higher efficiency of energy utilization during operation.

Abstract: A method for regulating access to a system BIOS comprises generating an access token for a user providing selected BIOS access privileges according to a system policy for the user.

Abstract: An electronic device includes a carriage to move along an axis relative to a platform. In addition, the electronic device includes a print head disposed within the carriage to move with the carriage and to deliver a print agent to the platform. Further, the electronic device includes a cooling system. The cooling system includes an air source to deliver air to the print head within the carriage to cool the print head. The cooling system also includes a pressure sensor to measure a pressure of a first zone within the carriage. Moreover, the cooling system includes a controller to control a flow rate of the air into the first zone or from the first zone in response to the measured pressure to maintain the first zone at a positive pressure with respect to a second zone outside the carriage.

Abstract: In some examples, an electronic device includes a first part comprising a touch-sensitive surface, and a mechanical keyboard pivotally attached to the first part, where the mechanical keyboard is pivotable between a first position where the keyboard is away from the touch-sensitive surface, and a second position where the keyboard is engaged to the touch-sensitive surface. The touch-sensitive surface is to detect actuations of keys of the mechanical keyboard when the mechanical keyboard is at the second position and engaged with the touch-sensitive surface.

Abstract: Example implementations relate to sensory feedback, For example, a non-transitory machine-readable medium storing instructions executable by a processing resource of a parent device to cause the parent device to provide primary sensory feedback, transmit a notification message from the parent device to a child device to cause the child device to provide secondary sensory feedback in response to receipt of the notification message, where the notification message includes instructions to provide secondary sensory feedback synchronized with the primary sensory feedback.

Abstract: A computing device includes a power circuit to provide up to a maximum amount of power. The computing device includes internal hardware having an actual current usage power, and ports that are each connectable to a peripheral device having an actual current port usage power. The computing device includes power manager hardware. Responsive to an overpower condition at the power circuit, the computing device is to disconnect a selected port from the power circuit.

Abstract: In an example, a method includes receiving, at a processor, a first matrix comprising a set of print coverage vectors, each print coverage vector specifying print materials for object generation using additive manufacturing and a second matrix comprising a corresponding set of properties for objects generated using the print coverage vectors. The method may further include determining, by the processor, a solution to an objective function relating the first and second matrices.

Abstract: In some examples, an apparatus includes an optical sensor to detect a material in a printing system, a light transmissive layer to pass light to the optical sensor, and a wiper actuatable to wipe a surface of the light transmissive layer to remove particles of the material away from the surface of the light transmissive layer.

Abstract: Examples disclosed herein relate to detecting an activity based on time difference metrics. In one implementation, a processor determines metrics related to the differences between the sizes of sets. For example, each set may include time indications that result in the particular integer associated with the set when a modular operation is performed on a difference between the respective time indication and a first time indication. The processor may detect a pattern indicative of an activity based on the metrics and output an indication that the activity is detected.

Abstract: According to one aspect, there is provided a build unit for a 3D printer. The build unit comprises a housing and a build platform movable with the housing, the housing and the platform forming a build chamber. An upper portion of the housing is to, during a print operation, maintain the contents of the upper portion of the build chamber within a first predetermined temperature range, whereas the lower portion of the housing is to allow cooling of the contents of a lower portion of the build chamber.

Abstract: A heater for a fuser includes a substrate, a first pair of heating elements provided on the substrate, and a second pair of heating elements provided on the substrate. The first pair of heating elements and the second pair of heating elements extend in a length direction of the substrate. The second pair of heating elements is provided between one heating element among the first pair of heating elements and the other heating element among the first pair of heating elements. A distance between the heating elements of the second pair of heating elements is greater than or equal to a value obtained by adding widths of each of the first pair of heating elements and the second pair of heating elements at a center in the length direction of each of the heating elements from the first and second pairs of heating elements.

Abstract: A three-dimensional (3D) printer and method including a vessel to discharge build material for the 3D printer to form a 3D object from the build material. The vessel includes a baffle or restrictor to alter flow of build material discharging from the vessel.

Abstract: In some examples, a build material recycling device of a three-dimensional (3D) printer can include an upper chamber including an inlet and a material separator coupled to the inlet, a classifier coupled to the upper chamber, and a lower chamber coupled to the classifier, where the classifier is located between the upper chamber and the lower chamber.

Abstract: In an example, a method includes acquiring, at a processor, a data model of an object to be generated in additive manufacturing, the data model comprising object model data representing a slice of the object model as a plurality of polygons and object property data comprising property data associated with the plurality of polygons. The slice may be inspected from a predetermined perspective at a plurality of discrete locations. It may be determined if each location is within a face of a polygon, and if so, the object property data associated with that polygon may be identified and associated with that location. The slice may further be inspected at a plurality of discrete locations along an edge of a polygon, the object property data associated with each location may be identified and associated with that location.

Abstract: In an example implementation according to aspects of the present disclosure, a method may include discovering, by a computing device, a module attached to the computing device, interrogating the module to determine parameters associated with the module, and updating a human-readable interface to include the parameters.

Abstract: An additive manufacturing apparatus includes an additive manufacturing engine and an input to receive a plurality of part files to create a plurality of parts. Each part file includes a description of a part to be created by the additive manufacturing engine. A processor interprets a part file to read the description of the part from the part file, stores at least a portion of the description of the part, and repeats the interpretation and storing for each of the received part files. A job composer generates a manufacturing job using the stored descriptions and using characteristics of the additive manufacturing engine, and provides the generated manufacturing job to the additive manufacturing engine.

Abstract: In one example, a build material preparation subsystem. The subsystem includes a trough to house build material deliverable to a build bed and usable to form a layer of an object fabricated by additive manufacturing. An agitating tray is slidably disposed in the trough. A linear actuator is disposed adjacent an outside wall of the trough. A drive arm has a first end portion fixedly coupled to the agitating tray and a second end portion coupled to the linear actuator. The drive arm passes over a wall of the trough.

Abstract: It is disclosed a 3D printing system and a build material spreading method for a 3D printer that comprises: moving a spreader in a first pass in a first direction over a pile of build material at a first separation distance from a dosing surface thereby sweeping a first amount of build material; modify the first separation distance by the distance adjustment unit to a second separation distance; and moving the spreader in a second pass in a second direction towards the build surface to sweep a second amount of build material in a direction towards the build surface

Abstract: At a print temperature, a layer (having a predetermined height) of metal build material particles is formed. Also at the print temperature, a fluid containing metal nanoparticles is selectively applied to at least a portion of the layer, and at a fluid loading that wets the portion through the predetermined height without saturating the portion. The metal nanoparticles are exposed to a sintering temperature that is higher than the print temperature and at least 500° below a melting point of the metal build material particles using a predetermined number of heating events taking place at a predetermined speed or for a predetermined time, and separated by a predetermined delay time, to bind the metal build material particles together to form a bound layer. A build material surface is cooled to or below the print temperature. The forming, selectively applying, exposing, and cooling are repeated to form a part precursor.

Abstract: In some examples, a mobile device can provide radio channel access based on country codes by determining a time zone from an operating system (OS) of the mobile device, determining a country of the mobile device based on the time zone, receiving respective country codes from a plurality of access points (APs) in communication with the mobile device, and enabling access to an alternate radio channel from a default radio channel based on a comparison of the country of the mobile device to respective countries corresponding to the country codes.

Abstract: An additive manufacturing particulate build material management station (306), comprising: a material management station body; a particulate build material supply conduit (382, 582) with a particulate build material supply connector (385, 585) to releasably connect to a particulate build material supply container (314) to couple flow of a fluid carrying a particulate building material supply from within the supply container (314) to the material management station body; and a station data processor (295) to read data from a data memory chip of the supply container (314) corresponding with a quantity of particulate build material associated with the supply container (314), and to control the withdrawal of particulate build material from the supply container (314) based upon the quantity of particulate build material associated with the supply container (314).

Abstract: A system to identify an AC mains connection state of a power device comprising a monitoring device connected to a plurality of different AC mains power inputs of the power device, wherein the monitoring device monitors an electrical parameter at the respective AC mains power inputs; and a controller to monitor a difference between electrical parameter values at the plurality of AC mains power inputs, wherein the controller determines a connection state of the power device from the difference between the electrical parameter values.

Abstract: A surface enhanced luminescence system may include a laser and a controller to output control signals causing the laser to irradiate the pre-analyte exposed plasmonic surface while maintaining a profile of the pre-analyte exposed plasmonic surface.

Abstract: Examples disclosed herein provide a cover for obscuring an opening found on a housing of a computing device. As an example, the housing includes a bezel that includes the opening extending through the bezel. The cover includes a pin disposed on a first end of the cover, wherein the pin is insertable into a hole along the bezel. The housing includes features to swivel a second end of the cover opposite the first end in either a first or second position. In the first position, the second end is to obscure a viewing portion of the opening, and in the second position, the second end is to expose the viewing portion.

Abstract: A system for reducing degradation of Wi-Fi signals for computers includes a first antenna of a Wi-Fi module disposed within a first region of the computer and a second antenna of the Wi-Fi module disposed within a second region of the computer wherein the regions are separated by a distance such that the first antenna and the second antenna are not subjected to degradation of the Wi-Fi signal at the same time due to a user's hands blocking the Wi-Fi signal when typing.

Abstract: Techniques for separating particles of interest from whole blood are disclosed. An example particle separation chip includes a first inlet on the particle separation chip for receiving whole blood and a second inlet on the particle separation chip for receiving a lysis buffer. The particle separation chip also includes a mixer to mix the whole blood with the lysis buffer to provide lysis of red blood cells in the whole blood. The particle separation chip also includes a buffer exchanger to exchange the lysis buffer for a dielectrophoresis buffer to produce a solution that enables dielectrophoretic separation of particles of interest. The particle separation chip also includes a separator coupled to an output of the buffer exchanger to separate the particles of interest from other particles in the solution via dielectrophoretic separation and deliver the particles of interest to an outlet on the particle separation chip.

Abstract: A material development tool includes a first plate and a second plate. The first plate has an indentation of a predetermined depth. The second plate having an opening for receiving build material when placed on the first plate and is removable from the first plate. A recoater is used to move and spread the build material within the indentation of the first plate.

Abstract: A build unit may include a build chamber, at least two datum apertures defined in at least two opposite sides of the build unit, and at least two alignment posts that seat within the datum apertures to couple the lift system to the build chamber, and to align the lift system in a first coordinate direction relative to the build chamber.

Abstract: A three-dimensional (3D) printer includes a cartridge receiver to receive a material cartridge containing new material for generation of a 3D object. The 3D printer also includes an energy source disposed to expose an indicator on the material cartridge to energy in response to depletion of the new material in the material cartridge to change the appearance of the indicator. The changed appearance of the indicator indicates that the material cartridge no longer contains new material.

Abstract: In some examples, a service module of a three-dimensional (3D) printer can include a modular web to removably couple to the service module of the 3D printer and when coupled to the service module can clean a print head of the 3D printer and remove a printing agent from the print head.

Abstract: In an example implementation according to aspects of the present disclosure, a method may include identifying, via a first microphone of a device, when a user registered to use the device is speaking, and comparing a voice characteristic of the user, as detected by the first microphone, against a threshold value. If the voice characteristic exceeds the threshold value, the method may include unmuting a second microphone of the device for the user to participate in a teleconference.

Abstract: In one example, a friction hinge includes a link connected to a slide slot of a first base with a movable shaft and connected to a base friction mechanism of a second base with a link friction mechanism, where the link includes a joint positioned between the movable shaft and the link friction mechanism. In another example, a friction hinge system includes a first link connected to a first slide slot of a first base with a first movable shaft and connected to a first base friction mechanism of a second base with a first link friction mechanism, a second link connected to a second slide slot of the second base with a second movable shaft and connected to a second base friction mechanism of the first base with a second link friction mechanism, and a joint shaft to connect the first link to the second link at a joint.

Abstract: An example docking station includes a network interface controller. The network interface controller is to communicatively couple the docking station to a network. The docking station also includes a controller to manage the docking station. The docking station includes a hub communicatively coupled to the network interface controller and the controller. The hub is to communicatively couple to a computing device. The controller is to instruct the hub to use the computing device as a master based on the computing device being communicatively coupled to the hub and to instruct the hub to use the controller as the master based on the computing device not being communicatively coupled to the hub.

Abstract: A material cartridge includes a fresh label indicating material of the material cartridge includes previously unused material for fabrication of a three-dimensional (3D) object and a reclaimed indicator of the material cartridge, the reclaimed indicator indicating material subsequently contained within the material cartridge is reclaimed material from fabrication of a previous 3D object, wherein the reclaimed indicator is located underneath the fresh label such that when the material of the material cartridge is depleted, the fresh label is removable to expose the reclaimed indicator.