Abstract: In one example of the disclosure, a system for print fluid recirculation includes a supply manifold, a recirculation manifold, a printbar, and a recirculation pathway. The printbar includes a plurality of printheads that are in fluid communication with the supply manifold, and the recirculation manifold. The recirculation pathway is in fluid connection with the supply manifold and the recirculation manifold, and is to enable recirculation of print fluid at a controlled flow through the plurality of printheads.

Abstract: A printing device and method is described comprising: controlling movement of a printing medium along a printing medium path to position the printing medium relative to at least one printhead to allow printing on the printing medium by the at least one printhead; and applying a plurality of respective elastic forces in a direction substantially perpendicular to the printing medium path, wherein the respective elastic forces are applied by a plurality of elastic elements of a modular assembly arranged laterally across a width of the printing medium path, wherein the printing medium acts against the elastic forces of the respective elastic elements of the modular assembly.

Abstract: An example self-priming microfluidic structure can include a microfluidic channel including a floor and a ceiling. A channel height is defined as a distance between the floor and the ceiling. A channel height step can be in the floor, or ceiling, or both. The channel height downstream of the channel height step can be greater than the channel height upstream of the channel height step. An interior pillar can be positioned in the microfluidic channel extending from the floor to the ceiling. The interior pillar can include a widening portion at an upstream end of the interior pillar and a tapering portion at a downstream end of the interior pillar. The interior pillar can overlap the channel height step so that the interior pillar is partially upstream of the channel height step and partially downstream of the channel height step.

Abstract: A print apparatus is disclosed. In an example, the print apparatus comprises: a photoconductive surface to receive a latent image representative of an image to be printed onto a printable substrate; a plurality of print components, each print component having a surface movable relative to the photoconductive surface, wherein a current or voltage is to be applied between the print component surface and the photoconductive surface; and processing circuitry to: measure a current or voltage between each print component surface and the photoconductive surface; responsive to detecting a deviation in the measured current or voltage from a reference current or voltage in respect of any of the plurality of print components, determine that there exists a defect associated with the photoconductive surface; and determine, based on the amount of deviation of the measured current or voltage from the reference current or voltage, an indication of the size of the defect.

Abstract: Techniques are provided for a spare part management and reservation system. Based on a received request from a first client device, stored data is retrieved indicating whether a part is available to a user. A first indication is received from the first client device comprising a request from the user to reserve the part in an inventory. In response to data indicating that the part is available to the user, a contingent reservation of the part by the user is generated and transmitted. A second indication comprising a notification indicating whether the part has been consumed by the user is received from the first client device. In response to the notification indicating that the part has or has not been consumed by the user, a real-time update to the contingent reservation comprising either a confirmed reservation or an indication that the part is available for reservation is generated and transmitted.

Abstract: According to examples, an apparatus may include a processor and a memory on which are stored machine-readable instructions that when executed by the processor, may cause the processor to receive an image and identify contents in the received image. The processor may identify candidate regions on the image at which a predefined object is placeable. In some examples, the processor may assign scores to the identified candidate regions based on relative positions of the identified candidate regions to respective ones of the identified contents in the image. Based on the assigned scores, the processor may select a candidate region among the identified candidate regions at which the predefined object is to be placed. The processor may determine a size and a position of the predefined object based on the selected candidate region, and may output the determined size and the position of the predefined object on the image.

Abstract: Aspects of the present disclosure are directed to an apparatus including a circuit region and a fluidic region. In a particular example, the circuit region with logical circuits thereon, includes a thermal oxide layer on a silicon substrate, and a dielectric layer over the field oxide layer, the dielectric layer including a doped dielectric film. The microfluidic device further includes a fluidic region including fluid ports formed through a surface of the apparatus and including an un-doped dielectric film. The fluidic region includes an aperture in the dielectric layer, where the aperture is defined by a dielectric wall which forms part of the dielectric layer. A sealing film deposited over the dielectric wall may prevent the doped dielectric film from contacting fluid contained in the fluid port.

Abstract: Systems, methods, and corresponding computer-readable media for multi-modal hierarchical semantic search of electronic documents. Systems in accordance with the disclosure comprise search engine controllers, any desired numbers of search engine interface controllers, and persistent data stores accessible by the search engine controllers. The controllers are configured to parse searchable document data sets to extract document object data sets. Each document object data set can represent textual and/or image feature of the document. For each document object data sets the controller generates at least one enriched document object data set, and forms at least one of a document graph or index. In response to search requests, the search controller compares document graphs or indexes to identify the most similar documents.

Abstract: A head mounted display assembly is provided. The head mounted display assembly comprises a head supported structural frame to support a display viewable by a user of the assembly, the structural frame including upper and lower surfaces. The assembly comprises a mounting interface on the lower surface of the structural frame, the mounting interface for releasably coupling an accessory device to the assembly. The mounting interface comprises a magnetic portion for attracting an opposing magnetic portion of the accessory device upon alignment of the accessory device with the mounting interface, and for repelling the magnetic portion of the accessory device upon misalignment of the accessory device with the mounting interface, and a communication interface for communicating data with the accessory device.

Abstract: A wearable apparatus for sensing movement of a wearer's body is disclosed. The wearable apparatus comprises a flexible substrate for conforming about the wearer's body, and a capacitive sensor attached to the flexible substrate, the capacitive sensor comprising a transmitter electrode and a receiver electrode arranged in opposition on opposite sides of the flexible substrate, the transmitter electrode being arranged to capacitively couple to the receiver electrode.

Abstract: According to an example, a printhead storage device comprises a printhead pocket to receive a printhead, a receptacle with an interior chamber wherein printing fluid is provided, and a fluid interconnect device comprising a fluid path with the interior chamber. Upon insertion of a printhead to the pocket, the fluid interconnect device is connected to the printhead, thereby providing a fluid connection between the printhead and the interior chamber and wherein the printhead is not operable when inserted in the printhead pocket.

Abstract: Examples include a sheet transport apparatus comprising a sheet inlet facing a specific side of the apparatus. The sheet transport apparatus also comprises a sheet outlet facing the specific side of the apparatus and located below the sheet inlet, the sheet outlet comprising a ceiling between the sheet outlet and the sheet inlet. The sheet transport apparatus further comprises a sheet driving mechanism configured for driving a sheet of media on a media path from the sheet inlet to the sheet outlet, and a flexible and resilient device connected to the ceiling and partially obstructing the sheet outlet.

Abstract: An example method is described in which a property is measured associated with a vertical displacement of a supporting frame of a printing system, the printing system having a floating frame mounted on the supporting frame, and the floating frame comprising a position sensor of the printing system and a nozzle to eject a drop of print agent; an orientation of the floating frame is adjusted with respect to the supporting frame based on the measured property.

Abstract: Examples are described herein for monitoring power source usage of a computing device, including a battery and another power source, over time. In various examples, time periods of this monitored time may be added to a time count based on their immediately previous or immediately subsequent time periods satisfying a condition. The time count may be used to track periods of time during which certain power source usage factors are present that may lead to or may indicate the presence of battery swelling. After a time period is added to the time count, the updated time count can be compared to a time count threshold, and a user of the computing device may be warned based on the comparison. The threshold and warning may be selected to warn a user of potential present or future swelling of the battery.

Abstract: An apparatus is disclosed herein. The apparatus comprises a carriage to move laterally in a scanning direction over a platen, a scan beam to support the carriage over the platen, a mechanism to move the scan beam vertically, and a media holder. The media holder comprises a central portion to hold a media on the platen, a first end couplable to the platen at a coupling position, and a second end couplable to the scan beam such that the second end moves vertically along with the scan beam.

Abstract: Disclosed is a developer roller comprising a first section comprising a first exterior surface, wherein the first exterior surface comprises an electrically-conductive material; and a second section comprising a second exterior surface, wherein the second exterior surface is non-electrically-conductive. The second section is axially aligned with the first section and provided at a first longitudinal end of the first section.

Abstract: In some examples, an apparatus can include a latch including a latch flange, where the latch flange includes a hook to interface with a housing, and a cable guide including a cable flange to interface with the latch, where the cable flange is secured in the housing when the cable guide is in a disengaged position, and the cable flange and the housing are to form a pathway when the cable guide is in an engaged position.

Abstract: In an example in accordance with the present disclosure, a wearable extended reality (XR) system is described. The wearable XR system includes a transceiver to receive, from a host computing device, a hologram pattern of original content to be displayed. The wearable XR system also includes a display unit. The display unit includes 1) a pattern lens to display the hologram pattern in front of a red, green, blue (RGB) light source and 2) the RGB light source to emit red, green, and blue light towards the hologram pattern to deconstruct the hologram pattern to present the original content. The wearable XR system also includes an image director to reflect the decoded original content towards a user of the wearable XR system.

Abstract: In an example implementation according to aspects of the present disclosure, a system, method, and storage medium comprising a processor, memory, and instructions to send a request for authorization to a user wherein the authorization is limited to a subset of privileged information associated with the user, receive a response for authorization from the user. The instructions, responsive to the receipt of the response, access the subset of privileged information from a user data repository. The instructions, responsive to the access, send an audit record to an audit system, wherein the audit record comprises the request, the response, and a summary of the access and send the audit record to the user.

Abstract: In an example a method comprises operating, by a processor, on a first quantity that is proportional to a side of a parallelogram printed, at least in part, on a substrate by a fluidic die, the side of the parallelogram being substantially perpendicular to the direction of advancement of the substrate. The method further comprises operating, by a processor, on a second quantity and a third quantity, the second and third quantities respectively being proportional to the length of the lines bisecting the parallelogram. The method comprises calculating, by a processor, an angle that the fluidic die makes with the direction of advancement of the substrate based on the first, second, and third quantities.

Abstract: A memory structure stores a plurality of color maps, the entity, when decompressed by a printer controller, comprising a plurality of first level wrappers, each first level wrapper including at least one characteristic to identify a corresponding color map, and a recipe to define and locate packets for constructing the color map, the recipe having at least one locator for each second level wrapper; and a plurality of second level wrappers of different types, each second level wrapper wrapping a corresponding packet.

Abstract: One example provides a reconfigurable computing fabric to manage machine learning (ML) processing including a configurable interconnect structure and a number programmable logic blocks each having a configurable set of operations. For each of a number of fabric configurations of the computing fabric, each programmable logic block has a corresponding set of operations and the interconnect structure has a corresponding data path structure to interconnect the programmable logic blocks with one another and with inputs and outputs of the computing fabric. The programmable logic blocks include an input/output block having a set of operations including to provide virtual interfaces to receive external session requests for ML processing from request sources, and an elastic AI/ML processing block having a set of operations including to configure a number of AI/ML engines with a session implementation for each external session request and each of a number of event-driven internal session requests.

Abstract: In an example, a method includes identifying, by processing circuitry, a feature of less than a threshold size of an object to be generated in additive manufacturing. In some examples the method further includes determining, by processing circuitry, a first density of a print agent to be applied to build material when generating the identified feature of the object based on an intended flexibility of the feature of the object. The method may further include determining, by processing circuitry, a second density of print agent to be applied to build material when generating another feature of the object.

Abstract: In some examples, a non-transitory computer-readable medium stores executable code, which, when executed by a processor, causes the processor to receive a video of at least part of a human torso, use a neural network to produce multiple vector fields based on the video, the multiple vector fields representing movement of the human torso, and determine a respiration rate of the human torso using the multiple vector fields.

Abstract: According to examples, an apparatus may include a processor that may receive an environmental condition detected at an electronic device and may determine whether the received environmental condition is outside of a predefined threshold range for the electronic device. The processor may, based on a determination that the received environmental condition is outside of the predefined threshold range for the electronic device, generate a notification item in a configuration page of the electronic device indicating that the electronic device has operated in an environmental condition that is outside of the predefined threshold range for the electronic device. The processor may also store the generated notification item in the configuration page of the electronic device, in which a service agent of the electronic device is to access the notification item in the configuration page stored in the electronic device.

Abstract: A method comprises: determining, from build data comprising one or more build elements each of which is a representation of a portion of an object of one or more objects to be generated by an additive manufacturing system, a property of at least one build element of the one or more build elements; and determining, based on the property of the at least one build element, whether generating the one or more objects using the build data would result in generating the object with a generation defect.

Abstract: Certain examples relate to a method of a method of color prediction in multiple rendering contexts. In one example the method determines a plurality of color prediction models for respective color rendering contexts, each color prediction model mapping between a device dependent color and a rendered color. Measurement data of the rendered color in one said context obtained and mapped to a corrected device color. The corrected device color may be used to predict rendered corrected color for another said context using respective color prediction models.

Abstract: An example device may comprise a molded structure and a dependent device coupled to the molded structure. The molded structure comprises thermo-electric traces and channels. The channels are between ten ?m and two hundred ?m, or less in one dimension. The dependent device comprises apertures corresponding to the channels and through which fluids, electromagnetic radiation, or a combination thereof is to travel. The dependent device also comprises contacts corresponding to the thermo-electric traces of the molded structure.

Abstract: In some examples, a fluidic die includes an arrangement of fluidic elements to dispense a fluid, where each fluidic element of the fluidic elements includes a fluidic actuator and a fluid chamber. The fluidic die includes an array of fluid feed holes in a plurality of dimensions to communicate the fluid with the fluidic elements, where each of multiple fluid feed holes along a first dimension of the plurality of dimensions is distinct from multiple fluid feed holes along a second dimension of the plurality of dimensions. The fluidic die includes circuit elements interspersed in regions between the fluidic elements along different axes of the fluidic die, where each circuit element of the circuit elements includes an active device. The fluidic elements and the circuit elements are formed on a common substrate.

Abstract: An example microfluidic mixer can include an inlet microfluidic channel portion and a fluid splitting channel portion including an overpass microfluidic channel to receive fluid from a first side of the inlet microfluidic channel portion and an underpass microfluidic channel to receive fluid from a second side of the inlet microfluidic channel portion, where the underpass microfluidic channel extends under the overpass microfluidic channel such that the channels overlap at their respective downstream ends. A fluid recombining channel portion is downstream of the fluid splitting portion and includes an angled recombining surface having an acute angle with respect to a direction of fluid flow, where the angled recombining surface is between the downstream ends of the overpass and underpass microfluidic channels. An outlet microfluidic channel portion is fluidly connected downstream from the fluid recombining channel portion.

Abstract: According to examples, an apparatus may include a substrate having a fluid recirculation channel and a membrane adjacent to the fluid recirculation channel, in which the membrane is portion of the substrate having a smaller thickness than other portions of the substrate. The apparatus may also include a component layer, in which a fluid ejection chamber may be formed in the component layer. The fluid ejection chamber may include a nozzle and fluid may be received into the fluid ejection chamber through an inlet port and recirculated to the fluid recirculation channel through an outlet port. The apparatus may further include active circuit elements formed on the membrane, in which the active circuit elements may control ejection of fluid from the fluid ejection chamber through the nozzle.

Abstract: A method comprising receiving, at a microfluidic channel, a biologic sample including a cell and providing a magnetic field within the microfluidic channel using a first magnet, wherein the magnetic field attracts a first plurality of magnetic particles disposed within the microfluidic channel. The method further includes activating a first resistor disposed within the microfluidic channel to agitate a volume of fluid within the microfluidic channel, and in response, moving the first plurality of magnetic particles through the microfluidic channel to lyse the cell and to release cellular material from the cell.

Abstract: In one example in accordance with the present disclosure, a device for conducting a reaction with a fluid sample is described. The device includes: a microfluidic channel; a number of heating elements along the microfluidic channel; and an inertial pump at each of opposite ends of the microfluidic channel to oscillate the fluid sample along the microfluidic channel.

Abstract: In some examples, a fluidic die includes an arrangement of fluidic elements to dispense a fluid, each fluidic element of the fluidic elements including a fluidic actuator and a fluid chamber. An array of fluid feed holes is arranged in a plurality of dimensions to communicate the fluid with the fluidic elements, where each of multiple fluid feed holes along a first dimension of the plurality of dimensions is distinct from multiple fluid feed holes along a second dimension of the plurality of dimensions. The fluidic die includes first circuit elements operable at a first power supply voltage, the first circuit elements interspersed in regions between the fluidic elements along different axes of the fluidic die.

Abstract: Certain examples relate to a method of a method of printing an image which comprises determining image data for an image to be printed onto a substrate, the image data comprising application amounts of one or more colorants to be applied to the substrate. A print mode is determined for applying the colorants to the substrate and comprises a plurality of application passes each for applying some of the application amounts of the colorants to the substrate and a drying delay between at least some of the application passes. The duration of the drying delay is dependent on a characteristic of one or more of the colorants or substrate. The image is printed using the image data and the print mode.

Abstract: A reversible micro-valve device includes a main channel, a passage comprising an opening in fluid communication with the main channel, and a side chamber to house a volume of trapped gas. The side chamber is communicably attached to the passage to control flow along the main channel. The side chamber is to be larger in volume than the main channel to which the trapped gas expands and includes one of the following two states at a given time: an open state in which the main channel is open and flow proceeds through the main channel, or a closed state in which the trapped gas within the side chamber is to expand within the passage and block the flow in the main channel.

Abstract: A memory circuit for a print component including a plurality of I/O pads, including an analog pad, to connect to a plurality of signal paths which communicate operating signals to the print component. The memory circuit includes a controllable selector connected in line with one of the signal paths via the I/O pads, the selector controllable to disconnect the corresponding signal path to the print component, and a memory component to store memory values associated with the print component. A control circuit, in response to a sequence of operating signals received by the I/O pads representing a memory read, to operate the controllable selector to disconnect the signal path to the print component to block the memory read of the print component, and provide an analog signal to the analog pad to provide an analog electrical value at the analog pad representing stored memory values selected by the memory read.

Abstract: An example image forming apparatus includes a power device, a photosensitive drum, a transfer device to remove remaining toner based on a cleaning bias voltage, an optical sensor to detect remaining toner, and a processor to adjust the cleaning bias voltage based on a set offset bias voltage. The processor may change a surface potential of the photosensitive drum to a voltage of a set pattern using the power device, acquire a size ratio of a periodic component based on a frequency of a signal detected from the remaining toner using the optical sensor, and, based on the acquired size ratio of the periodic component being greater than or equal to a set size ratio, adjust the cleaning bias voltage based on an offset bias voltage corresponding to the size ratio of the periodic component and provide the adjusted cleaning bias voltage to the transfer device to remove remaining toner.

Abstract: The present specification describes examples of a computing device for generating an extended reality environment. The example computing device includes a processor to receive placement data for a virtual sound source within the extended reality environment based on a user action within the extended reality environment. The processor is also to simulate sound generated by the virtual sound source within the extended reality environment based on a user location within the extended reality environment. Sound may be simulated by the processor according to virtual sound source characteristics and interaction with virtual objects. The computing device also includes an extended reality data capture module to capture the placement data and modifications to the virtual sound source within the extended reality environment; and capture the user location within the extended reality environment. The computing device further includes a sound generation device to generate an audible sound of the simulated sound.

Abstract: One example of a fluidic die includes a power supply node, a plurality of fluidic actuators, a plurality of discharge circuits, and a single discharge enable signal path. The plurality of fluidic actuators are electrically coupled to the power supply node. The plurality of discharge circuits are electrically coupled to the power supply node. The single discharge enable signal path is electrically coupled to each discharge circuit of the plurality of discharge circuits to enable each discharge circuit of the plurality of discharge circuits in parallel.

Abstract: The present specification describes examples of a computing device for reducing camera bus channels and bandwidth. The example computing device includes a plurality of tracking cameras to capture a plurality of tracking images. The computing device also includes a processor to receive the plurality of tracking images captured by the plurality of tracking cameras. The processor is to combine the plurality of tracking images into a carrier image. The computing device also includes a camera bus to transmit the carrier image.

Abstract: It is herein disclosed a waste printing fluid collection unit that may be part of a servicing station and/or a printing system, the waste printing fluid collection unit comprising; a collection reservoir for collecting the waste printing fluid, the collection reservoir having an end wall that separates the collection reservoir from ambient air; and a wick extending from the end wall towards the reservoir; wherein the wick is on a first side, connected to the end wall and, on a second side extends into the reservoir to contact the waste printing fluid.

Abstract: An electroporation system may include a well plate, a dispenser and a dispenser-well positioning system. The well plate may include wells, each of the wells including an interior, a first electrode adjacent the interior and a second electrode adjacent the interior and spaced from the first electrode. The first electrode and the second electrode are to apply an electrostatic field across the well. The dispenser is to dispense a cell having a diameter into each of the wells. The dispenser-well positioning system is to align each well and the dispenser such that the dispenser dispenses the cell into each well at a location spaced from the first electrode and the second electrode by a distance of at least 5 times the diameter of the cell.

Abstract: Examples of methods for image enhancement are described. In some examples, a method includes segmenting an image into an object region and a background region. In some examples, the image has a first resolution. In some examples, the method includes generating, using a first machine learning model, an enhanced object region with a second resolution that is greater than the first resolution. In some examples, the first machine learning model has been trained based on object landmarks. In some examples, the method includes generating, using a second machine learning model, an enhanced background region with a third resolution that is greater than the first resolution. In some examples, the method includes combining the enhanced object region and the enhanced background region to produce an enhanced image.

Abstract: In one example in accordance with the present disclosure, a fluid analysis system is described. The fluid analysis system includes an inlet channel to an analysis chamber. The analysis chamber is to receive a fluid sample to be analyzed. The fluid analysis system also includes a fluid branch having a fluidic junction along the inlet channel and a gas chamber to house a volume of trapped gas, the gas chamber being in fluid communication with the fluid branch. The fluid analysis system also includes a sealing fluid delivery system to fill the fluid branch with a sealing fluid and a heater adjacent the gas chamber to heat the gas chamber such that the trapped gas expands to push the sealing fluid into the inlet channel to seal the analysis chamber.

Abstract: A communicating print component a print head comprising a number of memory bits and a single lane analog bus conductively coupling the number of memory bits to a pad located on the exterior of the print head. The pad is to transmit an electrical signal from the number of memory bits, wherein the electrical signal indicates a combination of all selected bits of the number of memory bits.

Abstract: In an example method for forming three-dimensional (3D) printed electronic parts, a build material is applied. An electronic agent is selectively applied in a plurality of passes on a portion of the build material. A fusing agent is also selectively applied on the portion of the build material. The build material is exposed to radiation in a plurality of heating events. During at least one of the plurality of heating events, the portion of the build material in contact with the fusing agent fuses to form a region of a layer. The region of the layer exhibits an electronic property. An order of the plurality of passes, the selective application of the fusing agent, and the plurality of heating events is controlled to control a mechanical property of the layer and the electronic property of the region.

Abstract: A media bypass for a printer, the media bypass comprising a convertible media support to hold a substrate and to switch between an active and an inactive configuration, wherein the convertible media support pivots from the inactive configuration towards the active configuration to extend into the printer and to guide the substrate into the printer.

Abstract: The present disclosure refers to monitoring a printing fluid, in an example, a device is disclosed wherein the device N comprises a light emitter to illuminate a fluid line comprising a flowing printing fluid; an image sensor to capture a diagnostic image of the fluid line once it has been illuminated; and a processor connected to the detector being the processor to compare the diagnostic image to a baseline and to determine a printing fluid quality parameter based on the comparison.

Abstract: Disclosed herein is a print head arrangement, a printing device and a method of operating a printing device. The print head arrangement comprises a main print head having a plurality of printing nozzles for ejecting a printing fluid and an auxiliary print head having a plurality of pre-treatment nozzles for ejecting a pre-treatment fluid. The print head arrangement further comprises a controller that is to obtain a print medium parameter and to select a subset of the plurality of pre-treatment nozzles for application of the pre-treatment fluid based on the print medium parameter. The print medium parameter characterizes a thermal inertia of the print medium.