Abstract: Methods, systems, and apparatus, including computer programs encoded on computer storage media, for forecasting event volumes. One of the methods includes receiving activity data associated with events that occur in a computer network, transforming the received activity data into processed activity data, determining, for each of a series of distinct time periods, whether the distinct time period is associated with an anomalous level of event activity, and flagging the processed activity data with a designation of whether each of the series of distinct time periods is associated with the anomalous level of event activity. Based on the flagged activity data, prediction data is generated and provided that predicts a volume of events for a given future time period and a likelihood that the volume of events for the given future time period will be anomalous.

Abstract: A computer system constructs a decision-predictive recipient profile using sensatory data tied to an online profile of a recipient. After obtaining base sensatory data tied to the online profile of the recipient, the system may filter the base sensatory data by searching the base sensatory data for one or more machine-cognizable characteristics. The filtered sensatory data may be provided to an execution group, which may review displays of the sensatory data. Responsive to the displays of the sensatory data, the execution group may generate descriptors of the content of the filtered sensatory data and send the descriptors to the system. The system may process the descriptors to generate or augment the decision-predictive recipient profile.

Abstract: Methods, systems, and apparatus, including computer programs encoded on computer storage media, for centralized management of predictive models. One of the methods includes receiving a plurality of model versions from respective teams within the organization. Each received model version is processed to generate a respective predictive model corresponding to the model version, including identifying one or more collections of training data specified by the model version, identifying one or more training engines specified by the model version, training, by the identified one or more training engines, a predictive model using the identified one or more collections of training data, computing one or more performance metrics for the predictive model, and associating the one or more performance metrics for the predictive model with the corresponding model version in the version repository.

Abstract: According to examples, intelligent visualization munging may include transforming and enriching data that is to be visualized, determining features of the transformed and enriched data, determining a user role of a user associated with the transformed and enriched data, and a user interaction of the user. Intelligent visualization munging may further include learning a behavior of the user, and analyzing the features, the user role, the user interaction, and a learned behavior model to generate a recommendation that includes a predetermined number of visualizations from a plurality of available visualizations to display the transformed and enriched data. The predetermined number of visualizations is less than the plurality of available visualizations.

Abstract: Methods, systems, and apparatus, including computer programs encoded on computer storage media, for forecasting event volumes. One of the methods includes receiving activity data associated with events that occur in a computer network, transforming the received activity data into processed activity data, determining, for each of a series of distinct time periods, whether the distinct time period is associated with an anomalous level of event activity, and flagging the processed activity data with a designation of whether each of the series of distinct time periods is associated with the anomalous level of event activity. Based on the flagged activity data, prediction data is generated and provided that predicts a volume of events for a given future time period and a likelihood that the volume of events for the given future time period will be anomalous.

Abstract: An inkjet nozzle assembly includes: a nozzle chamber having a planar roof spaced apart from a floor, the roof having a nozzle aperture defined therein; and a heater element disposed in the nozzle chamber, the heater element being configured as a planar beam extending longitudinally and parallel with a plane of the roof. The nozzle aperture is elliptical having a centroid, a major axis and a minor axis, the major axis of the nozzle aperture is parallel with a longitudinal axis of the beam, the centroid of the nozzle aperture is offset from a longitudinal centroid of the planar beam, and the minor axis of the nozzle aperture overlaps with a whole width of the beam.

Abstract: An inkjet nozzle assembly includes a nozzle chamber having a planar roof spaced apart from a floor. A heater element is suspended in the nozzle chamber and is configured as a planar beam extending longitudinally and parallel with a plane of the roof. A nozzle aperture defined in the roof has a centroid offset from a longitudinal centroid of the planar beam.

Abstract: A detachable fluid coupling for connecting an inkjet printhead with an ink supply, the detachable coupling having a fixed valve member defining a valve seat, a sealing collar (146) for sealing engagement with the valve seat (148), a resilient sleeve (126) having one annular end fixed relative to the fixed valve member (128), and the other annular end engaging the sealing collar to bias it into sealing engagement with the valve seat. The coupling also having a conduit opening (150) that is movable relative to the fixed valve member for engaging the sealing collar (146) to unseal it from the valve seat. Unsealing the sealing collar from the valve seat compresses the resilient sleeve (126) such that an intermediate section of the sleeve displaces outwardly relative to the annular ends. With a resilient sleeve that buckles or folds outwardly, the diameter of the coupling is smaller that the conventional couplings that use an annular resilient element that biases the valve shut remaining residual tension.

Abstract: A structure for an inkjet printhead is disclosed. The printhead structure has an elongate support structure for supporting a printhead integrated circuit, and ink conduits formed in the elongate support structure for supplying ink to an array of nozzles of the printhead integrated circuit. Each ink conduit includes cavities distributed along a roof of the ink conduit. An opening to each cavity has an upstream edge and a downstream edge. The upstream edge contacts the ink before the downstream edge during initial priming of the ink conduits from an ink supply. The upstream edge has a transition face between the ink conduit and the cavity interior, the transition face being configured to inhibit ink from filling the cavity by capillary action during initial priming of the ink conduit. This causes gas to be trapped within the cavity. The gas acts to compress pressure pulses in the ink.

Abstract: An inkjet printer that has a printhead with a nozzle array for ejecting droplets of ink onto a media substrate, a media feed assembly for feeding media passed the printhead in a media feed direction such that the nozzle array and the media substrate are separated by a print gap and, an air flow generation mechanism for generating an air flow in the print gap opposite to the media feed direction.

Abstract: An inkjet nozzle assembly has a chamber with a nozzle opening for ejecting a liquid, a heater element disposed in the chamber, and a dielectric layer sandwiched between the heater element and a wall of the chamber. The dielectric layer has a thermal product of less than 1495 Jm?2K?1s?1/2. The thermal product is defined as (?Ck)1/2, where ? is the density of the layer, C is specific heat of the layer and k is thermal conductivity of the layer.

Abstract: A releasable locking clip for selective engagement with a connecting pin, the releasable locking clip comprising a fastening member displaceable from a pin engaging position to a pin disengaging position. The application of opposed compressive forces to the releasable locking clip displaces the fastening member to the pin disengaged position. In an alternative embodiment, a releasable fastener is formed by an elongate strap, a housing formed at a first end of the strap and having an aperture extending therethrough for receiving a second end of the strap, a fastening member displaceable from a pin engaging position to a pin disengaging position, and an actuation member responsive to the application of opposed manual compressive forces to actuate the fastening member from the pin engaging position to the pin disengaging position.

Abstract: An inkjet printer that has a printhead with a nozzle array for ejecting droplets of ink onto a media substrate, a media feed assembly for feeding media passed the printhead in a media feed direction such that the nozzle array and the media substrate are separated by a print gap and, an air flow generation mechanism for generating an air flow in the print gap opposite to the media feed direction.

Abstract: A structure for an inkjet printhead is disclosed. The printhead structure has an elongate support structure for supporting a printhead integrated circuit, and ink conduits formed in the elongate support structure for supplying ink to an array of nozzles of the printhead integrated circuit. Each ink conduit includes cavities distributed along a roof of the ink conduit. An opening to each cavity has an upstream edge and a downstream edge. The upstream edge contacts the ink before the downstream edge during initial priming of the ink conduits from an ink supply. The upstream edge has a transition face between the ink conduit and the cavity interior, the transition face being configured to inhibit ink from filling the cavity by capillary action during initial priming of the ink conduit. This causes gas to be trapped within the cavity. The gas acts to compress pressure pulses in the ink.

Abstract: A printhead for an inkjet printer that has a printhead integrated circuit with nozzles for ejecting ink, and a support structure for supporting the printhead IC. The support structure has ink conduits for supplying the nozzles with ink and a fluidic damper containing gas for compression by pressure pulses in the ink within the ink conduits to dissipate the pressure pulse. Damping pressure pulses using gas compression can be achieved with small volumes of gas. This preserves a compact design while avoiding any nozzle flooding from transient spikes in the ink pressure.

Abstract: An inkjet printhead includes a plurality of ink chambers fed by a common ink inlet, the plurality of ink chambers sharing a common roof structure; a plurality of heater elements respectively allocated to each of ink chambers; a plurality of nozzle apertures defined through the common roof structure and respectively aligned with the heater element of each ink chamber; and a bubble vent defined in the common roof of the ink chambers and aligned with the common ink inlet, the bubble vent sized to allow ink surface tension to restrict an egress of ink, and permit egress of gas bubbles therefrom.

Abstract: A printhead for an inkjet printer is disclosed. The printhead has one or more a printhead integrated circuits (ICs) with an array of nozzles for ejecting ink. A support structure of the printhead supports the printhead ICs. The support structure has ink conduits for supplying the array of nozzles with ink. Each ink conduit includes cavities distributed along a roof of the ink conduit. An opening to each respective cavity has an upstream edge and a downstream edge. The upstream edge contacts the ink before the downstream edge during initial priming of the ink conduits from an ink supply. The upstream edge has a transition face between the ink conduit and the cavity interior. The transition face is configured to inhibit ink from filling the cavity by capillary action during initial priming of the ink conduit. This causes gas to be trapped within the cavity. The gas acts to compress pressure pulses in the ink.

Abstract: An inkjet printer includes a printhead having a plurality of ink chambers fed be an ink inlet, each ink chamber having a heater element for ejecting drops of ink from a nozzle aperture of each chamber; a plurality of pressure pulse diffusing structure positioned between the plurality of ink chambers fed by the ink inlet, the plurality of pressure pulse diffusing structures for retarding a propagation of pressure waves generated by each ink chamber to adjacent ink chambers; and a controller for receiving print data and generating drive pulses to energize the heater elements in accordance with the print data. The controller increases the drive pulse energy during the printhead lifetime such that the drive pulse energy is never less than that of a preceding drive pulse.

Abstract: An inkjet printer includes a printhead having a plurality of ink chambers fed be an ink inlet, each ink chamber having a heater element for ejecting drops of ink from a nozzle aperture of each chamber; a plurality of pressure pulse diffusing structure positioned between the plurality of ink chambers fed by the ink inlet, the plurality of pressure pulse diffusing structures for retarding a propagation of pressure waves generated by each ink chamber to adjacent ink chambers; and a controller for receiving print data and generating drive pulses to energize the heater elements in accordance with the print data. The controller increases the drive pulse energy during the printhead lifetime such that the drive pulse energy is never less than that of a preceding drive pulse.

Abstract: A printhead is provided for an inkjet printer that has a print engine controller for receiving print data and sending it to the printhead. The printhead has a printhead IC for ejecting ink and a support structure for mounting the printhead IC in the printer adjacent a paper path. The printhead IC is mounted on a face of the support structure that, in use, faces the paper path. A flexible printed circuit board (flex PCB) that has contacts for receiving print data mounted to the support structure on a face that does not face the paper path. The bent section reduces the likelihood of trace cracking by holding the flex PCB at a set radius rather than allowing the flex to follow an irregular curve and thereby risking localized points of high stress on the traces.