Abstract: A composition is provided comprising N. meningitidis outer membrane vesicles, wherein said outer membrane vesicles are enriched with at least one antigenic component. The composition is suitable for use in vaccines and for treatment of infection, particularly meningococcal infection, demonstrating a broad spectrum of protection. A number of preferred antigenic components are described and include antigenic proteins and proteoglycans derived from N. meningitidis.

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: A printhead that has at least one printhead integrated circuit (IC) with an array of nozzles for ejecting ink and a support structure for supporting the printhead IC. The support structure has an ink conduit for supplying the array of nozzles with ink. The conduit has a set of resonant frequencies at which ink in the conduit generates a standing wave in response to certain operating modes of the array of nozzle. A fluidic damper is incorporated into printhead, the damper having a selected resonant frequency that damps the standing waves associated with each of the set of resonant frequencies such that they have an amplitude less than a maximum threshold.

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: 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: 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.

Abstract: A composition is provided comprising N. meningitidis outer membrane vesicles, wherein said outer membrane vesicles are enriched with at least one antigenic component. The composition is suitable for use in vaccines and for treatment of infection, particularly meningococcal infection, demonstrating a broad spectrum of protection. A number of preferred antigenic components are described and include antigenic proteins and proteoglycans derived from N. meningitidis.

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: A printhead assembly for an inkjet printer is disclosed. The printhead assembly has an elongate printhead chip with a nozzle face defining an array of nozzles. A support structure supports the elongate printhead chip on an external surface thereof. An epoxy resin is also provided adjacent a long side edge of the elongate printhead chip. The epoxy resin is profiled such that the epoxy resin is flush with the nozzle face of the elongate printhead chip. The epoxy resin is thixotropic prior to setting.

Abstract: A printhead for an inkjet printer that has a printhead integrated circuit (68) with nozzles for ejecting ink and a support structure (64, 174, 176) for supporting the printhead IC. The support structure having ink conduits (182) for supplying the array of nozzles. A plurality of cavities (200), each cavity having an opening that establishes fluid communication with the ink conduits, the openings being configured such that the cavities do not prime with ink when the ink conduits are primed from the ink supply. By leaving unprimed cavities throughout the support structure, any pressure pulses in the ink are damped by compression of the trapped gas pockets. Distributing the cavities rather than using one relatively large cavity, means that the pressure pulse is being damped along the length of the printhead IC, instead of allowing the pulse to travel the length of the ink conduit until it reaches the single damper and compresses the gas.

Abstract: A printhead assembly with an elongate printhead IC having a nozzle face defining an array of nozzles, and a support structure for supporting the elongate printhead IC on an external surface such that its length is transverse to a media feed direction through the printer. The external surface has a section that is flush with a long side edge of the elongate printhead IC.

Abstract: An inkjet printer that has a filter with a chamber divided into an upstream section and a downstream section by a filter membrane. An inlet conduit establishes fluid communication between an ink supply and the upstream section. An outlet conduit establishes fluid communication between the downstream section and a printhead. During use at least part of the inlet conduit is elevated relative to the filter membrane. By elevating the inlet conduit relative to the filter membrane, it acts as a bubble trap to retain bubbles that would otherwise obstruct the filter. This allows the filter size to be reduced for a more compact overall design.

Abstract: A printhead for an inkjet printer that has a printhead integrated circuit (IC) with an array of nozzles for ejecting ink, and a support structure for mounting the printhead IC within the printer. The support structure has ink conduits for supplying the array of nozzles with ink, the ink conduits have a meniscus anchor for pinning part of an advancing meniscus of ink to divert the advancing meniscus from a path the advancing meniscus would otherwise take. If a printhead consistently fails to prime correctly because a meniscus pins at one or more points, then the advancing meniscus can be directed so that the advancing meniscus does not contact these critical points. Deliberately incorporating a discontinuity into an ink conduit immediately upstream of the problem area can temporarily pin to the meniscus and skew the meniscus to one side of the conduit and away from the undesirable pinning point.

Abstract: A method of fabricating a film used in attaching a printhead integrated circuit to an ink supply manifold is disclosed. An adhesive polymeric film having a protective liner is provided. Photoresist is then deposited onto the protective liner, and the photoresist is photopatterned. Ink supply holes are etched through the adhesive polymeric film and the protective liner, with the photoresist acting as a mask for the etching. Finally, the protective liner including the photoresist is removed from the adhesive polymeric film after the etching step is complete.

Abstract: An ink coupling for connecting an inkjet printer and a replaceable cartridge configured to not drip ink upon detachment. The coupling has a cartridge valve on the cartridge side of the coupling and a printer conduit on the printer side of the coupling. The cartridge valve and the printer conduit having complementary formations configured to form a coupling seal when brought into engagement. The cartridge valve is biased closed and configured to open when brought into engagement with the printer conduit. Upon disengagement, the coupling seal breaks after the cartridge valve closes, and an ink meniscus forms and recedes from the complementary formations as they separate, the cartridge valve having external surfaces configured so that the meniscus travels across the external surfaces and only pins itself to the printer conduit surfaces.

Abstract: The invention relates to a fluidic arrangement for a printer. The arrangement includes an ink tank for storing ink, and an ink distribution assembly in fluid communication with the ink tank for supplying printhead integrated circuits (ICs) positioned thereon with ink from the ink tank. The arrangement also includes a valve arranged in an ink line between the ink distribution assembly and the ink tank, said valve configured to isolate ink in the ink tank from the printhead ICs whenever the printer is powered down. Further included is a pump located downstream from the ink distribution assembly, and a sump arranged in fluid communication with the pump for receiving excess ink from the ink distribution assembly.

Abstract: A filter for an inkjet printer that has a chamber divided into an upstream section and a downstream section by a filter membrane. An inlet conduit establishes fluid communication between an ink supply and the upstream section. An outlet conduit establishes fluid communication between the downstream section and a printhead. During use at least part of the inlet conduit is elevated relative to the filter membrane. By elevating the inlet conduit relative to the filter membrane, it acts as a bubble trap to retain bubbles that would otherwise obstruct the filter. This allows the filter size to be reduced for a more compact overall design.

Abstract: An inkjet printer that has an elongate array of nozzles for ejecting ink, a plurality of ejection actuators, each configured to eject ink through one of the nozzles respectively, a plurality of ink conduits aligned with a longitudinal extent of the elongate array of nozzles, the ink conduits extending adjacent the elongate array for supplying the array of nozzles with ink and, a plurality of pulse dampers positioned along each of the ink conduits, each pulse damper being individually in fluid communication with one of the ink conduits and each containing a volume of gas for compression by pressure pulses in the ink conduits. A pressure pulse moving through an elongate printheads, such as a pagewidth printhead, can be damped at any point in the ink flow line. However, the pulse will cause nozzle flooding as it passes the nozzles in the printhead integrated circuit, regardless of whether it is subsequently dissipated at the damper.