Abstract: A print system and a method for detecting and correcting underperforming LEDs in-line of a 3D object printer are disclosed. For example, the print system includes a plurality of printheads arranged in a two-dimensional array, a curing light source, an inline detection and correction (IDC) system, a movable member to hold an object and a test plate and a controller to control movement of the movable member to move the object and the test plate past the array of printheads, to operate the plurality of printheads to eject a marking material onto the object as the object passes the two-dimensional array of printheads, to operate the curing light source apply energy to the test plate and to cure the marking material, and to operate the IDC system to read the test plate to confirm that the curing light source is operating correctly based on a reading of the test plate.

Abstract: A system for communicating a message in response to placement of a product proximate to a mobile electronic device. The system includes a product package comprising a token that includes a power source and a wireless transmitter, and a mobile electronic device. The mobile electronic device includes a processor, a computer-readable memory, a wireless receiver that is operable to detect a signal emitted by the wireless transmitter of the product package, and a transmitter. The processor is configured to detect the signal, analyze the signal and extract token information from the signal, retrieve user information for a user who is associated with the mobile electronic device, generate a message that corresponds to the extracted information, and cause the transmitter of the mobile electronic device to send the message via a wireless communication protocol.

Abstract: A computer-implemented method and system for processing a document page is based on text and non-text detections in an image path. An object block is generated for each image content identified within an input page. the blocks are extracted from the input document for downstream processing. Then, the object blocks are classified based on whether the content is text or non-text. The extracted non-text objects—which are specified by their bounding boxes—are processed separately from the rest of the content. The processing is performed on the text content blocks in parallel. However, when error diffusion is employed, the error diffusion is performed sequentially on the non-text content blocks to avoid stitching artifacts between individually error diffused patches in non-text areas.

Abstract: A method of synthesizing polyamide microparticles may comprise: dehydrating and shearing a mixture comprising a matrix fluid, an emulsion stabilizer at about 0.01 wt % to about 50 wt % based on the weight of the matrix fluid, a solvent at about 13 wt % to about 75 wt % based on the weight of the matrix fluid, and a cyclic amide monomer at about 20 wt % to about 90 wt % based on the weight of the matrix fluid to yield an emulsion having a water content of about 1 wt % or less based on the total weight of the emulsion; adding a deprotonating agent to the emulsion at a concentration of about 0.01 wt % to about 1 wt % based on the weight of the matrix fluid; and contacting the emulsion with a polymerization initiator under conditions effective to polymerize the cyclic amide monomer into a plurality of polyamide microparticles.

Abstract: A method of operating an extruder assembly in a three-dimensional object printer translates and rotates an extruder body having an extrusion slot to produce three-dimensional objects more quickly and with greater precision. The method also includes rotating and moving one or more shutter bodies with respect to the extrusion slot to form a continuous filament of material of various sizes and shapes.

Abstract: A jetting assembly for ejecting a print material includes an actuator for applying a pressure to the print material, and further includes jetting assembly block that defines a pump chamber, a converging part (i.e., a narrowing taper), and a nozzle bore that ends or terminates in a nozzle from which a drop of the print material is ejected. An implementation can further include a throat and a diverging part that, together with the converging part, forms a venturi. The converging part results in an increase in a velocity of the print material and a decrease in pressure as the print material passes an supply port of a supply channel. The decrease in pressure can result in a replacement of at least a portion of the drop volume within the throat or the nozzle bore even before the drop is ejected from the nozzle.

Abstract: A printer for producing a print media moving in a process direction including a print engine, a fuser, a full width array and a duplexing path. The print engine is operatively arranged to receive the print media and to apply a first dry marking material to a first surface of the print media. The fuser is arranged subsequently to the print engine in the process direction and is operatively arranged to receive the print media with the first dry marking material applied to the first surface of the print media and to fix the first dry marking material on the first surface using at least one of heat and pressure. The full width array is arranged subsequently to the fuser and is operatively arranged to obtain a first image of the first surface of the print media, the first image being used to quantify a flatness of the print media and/or image quality of the first image. The duplexing path is arranged subsequently to the full width array.

Abstract: A system and method for predicting a sequence of actions employ a Gated End-to-End Memory Policy Network (GMemN2NP), which includes a sequence of hop(s). Supporting memories of the hops include memory cells generated from observations made at different times. A sequence of actions is predicted, based on input agent-specific variables. For each action, the model, at each hop, outputs an updated controller state which is used as input to the next hop or, for the terminal hop, for computing the respective action. Each hop includes a transform gate mechanism which is used to control the influence of output of the supporting memories on the updated controller state. For the second and subsequent hops, respective actions are predicted, after using any intervening observations to update the supporting memories. The model is learned, on a training set of observations, to optimize the cumulative reward of a sequence of two or more actions.

Abstract: An method for operating an object printing system printer prints electrical circuits on non-planar areas of objects and accurately places electronic components within the printed circuits. The method includes operation of a direct-to-object printer to form an electrical circuit on an object secured within the direct-to-object printer and operation of an electronic component placement system to retrieve an electronic component and install the electronic component in the electrical circuit on the object secured within the direct-to-object printer in response to a generation of a signal by the direct-to-object printer for the electronic component placement system that indicates the electronic component is to be installed in the circuit on the object secured within the direct-to-object printer.

Abstract: A system for evaluating human interactions with items, such as products displayed on shelves, includes at least one wireless reader which collects data from a set of associated wireless tags in an interrogation zone. The tags and readers may be based on RFID technology. The collected data includes an identifier for an item that is associated with each wireless tag and a touch sensor status indicating whether the item is being touched. A computer receives and aggregates the collected data and outputs an evaluation of human interactions with the items based on the data.

Abstract: An app maintains different multi-modal output signatures. Each multi-modal output signature contains instructions for transducer output with speaker output and/or display output. Also, each multi-modal output signature is unique and different from all other multi-modal output signatures. Further, each different multi-modal output signature corresponds to only one of many possible alerts that may be generated by a printer. The app is adapted to control the printer user interface system and/or a portable device user interface system, to output these multi-modal output signatures in coordination.

Abstract: A method operates a three-dimensional object printer for production of cylindrical-shaped objects. The method uses a controller to operate an actuator operatively connected to a cylindrical member to rotate the cylindrical member within at least two supports, operate a plurality of ejectors in each of at least two printheads supplied with different materials to form portions of layers on the rotating cylindrical member with the different materials supplied to the at least two printheads, operate a linear actuator operatively connected to the cylindrical member to translate the cylindrical member bidirectionally in a direction parallel to a longitudinal axis of the rotating cylindrical member between the two supports, and operate a curing device to modify the layers formed on the rotating cylindrical member while the cylindrical member is rotating within the at least two supports and translated in the direction parallel to the longitudinal axis of the rotating cylindrical member.

Abstract: A deburring apparatus includes (among other components) a frame and an elongated flat element connected to the frame. Rollers are adapted to support and rotate a vacuum belt around the apparatus. A perforation device is positioned and adapted to make perforations in the vacuum belt as the vacuum belt is rotated by the rollers. Making the perforations in the vacuum belt causes debris to remain in at least one of the perforations. The elongated flat element is positioned to contact the debris in the perforations.

Abstract: A method and system for rendering a correlation mark, can involve determining a combined path of a foreground comprising a first layer based on a first correlation pattern and a background comprising a second layer based on a second correlation pattern. The size of the second layer of the second layer can be calculated based on a trade off between how well the second layer hides a correlation effect and a readability of the second layer. The combined path can be filled with variable data at the size of the second layer at a selected color or a third correlation pattern to produce a two-layer correlation mark having a variable data hiding layer for rendering on or through a recording medium.

Abstract: An additive manufacturing system for fabricating multi-sided printed composite sheet structures includes a roll fed duplex architecture that prints polymer images on both sides of a substrate sheet to form two-sided 3D composite layers. A substrate web is fed into the machine, and a top side is printed with a wetting agent, powdered, and the excess powder is removed. The image may be pinned to the substrate in a fusing step so that the web can be inverted to print a second image on the other side. The inversion architecture could include inverting rollers, tubes or a Mobius strip that may flip the substrate for backside printing using a single imaging station. The resulting two-side powdered and pinned substrate would then be cut, stacked, heated and compressed to create a 3-D object with more polymer in the stack, resulting in better adhesive binding characteristics at a much higher production speed.

Abstract: Methods and systems for printing on a print device from both authorized users and guest users are disclosed. The methods include receiving a request to initiate a document processing session on the print device, determining whether the requested document processing session is a kiosk mode session for executing a document processing job for a guest user or a staff mode session for executing a document processing job for an authorized user, initiating the kiosk mode session for executing paid document processing jobs in response to determining that the requested document processing session is the kiosk mode session, receiving a request for executing a first document processing job, determining a cost for executing the document processing job at the print device, receiving approval to execute the first document processing job at the print device for the determined cost from a guest user.

Abstract: Fluorescent green toners are provided. In embodiments, a fluorescent green toner comprises fluorescent agent-incorporated resin particles comprising a resin, a fluorescence brightener, and a yellow fluorescent agent having an absorption spectrum that overlaps with a fluorescence emission spectrum of the fluorescence brightener; and a cyan colorant; blue dye-incorporated resin particles comprising the resin and a blue dye; or both. The fluorescent green toner has a weight ratio of the yellow fluorescent agent to the cyan colorant and, if present, the blue dye, in a range of from 100:1 to 0.2:1, and the fluorescent green toner exhibits Förster Resonance Energy Transfer (FRET) under illumination with UV light. Methods of making and using the fluorescent green toners are also provided.

Abstract: A method is disclosed. For example, the method executed by a processor of a multi-function device (MFD) includes receiving a grammar-based voice search for a workflow, processing the grammar-based voice search into normalized terms associated with the MFD, searching for workflows that match the normalized terms from the grammar-based voice search, and displaying matching workflows in a sorted order on a user interface of the MFD.

Abstract: An additive manufacturing system has a plurality of manifolds in an extruder. Each manifold is connected to at least one nozzle of the extruder so the at least one nozzle extrudes thermoplastic material through a corresponding aperture in a faceplate mounted to the extruder. A plurality of valves is configured between each manifold and each nozzle connected to the manifold so the nozzles connected to a manifold extrude thermoplastic material from the manifold selectively. The faceplate is also configured for rotation about an axis perpendicular to the faceplate so different orientations of the nozzles and the apertures of the faceplate can be obtained. The different manifolds of the extruder enable a plurality of thermoplastic materials having different properties to be extruded simultaneously so the materials can join to one another while the materials are at an elevated temperature.

Abstract: An object printed by a three-dimensional (3D) printer includes a plurality of layers of material printed by the 3D printer. The layers of material bond together to form the object as the layers of material cool and solidify after being printed by the 3D printer. The object also includes a temperature sensor placed in contact with one or more of the layers when the layers of material are being printed by the 3D printer. The temperature sensor remains in contact with the object after the layers of material cool and solidify to form the object. The temperature sensor is configured to measure a temperature of the object after the layers of material cool and solidify to form the object.