Abstract: An inkjet printer that has a printhead IC with and array of ink ejection nozzles, an ink manifold for distributing ink to the printhead IC, the ink manifold having an ink inlet and an ink outlet, an accumulator, and a downstream pump in fluid communication with the ink outlet. The downstream pump is independently operable. This allows the printhead to be primed or deprimed for storage and transport and it allows the printhead IC to be cleaned by a foam formed by air forced through the ink election nozzles.

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: A virtual application packaged for a specific executing environment may be executed on a processing device having an executing environment different from the specific executing environment. A reference, included in extracted installer metadata, to one or more key paths of a hierarchically-structured data store may be modified according to a set of rules related to the executing environment detected in the processing device. The modified extracted installer metadata may be provided to an installer for installing the virtual application. During execution of the virtual application, a request to read, write, or modify the hierarchically-structured data store may be intercepted and changed, such that a first key path included in the request may be mapped to a second key path, based on the detected executing environment. Similarly, a response to the request, which may include the second key path, may be intercepted and modified, to the first key path.

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 maintenance station for maintaining a printhead in an operable condition. The maintenance station has an elastically deformable pad coextensive with the printhead. The pad is a one-piece elastomer pad having a uniform contact surface configured for sealing contact with all nozzles in an ink ejection face of the printhead. A mechanism is configured for reciprocally moving the pad between a first position in which the contact surface is sealingly contacted with all nozzles in the ink ejection face, and a second position in which the contact surface is disengaged from the face. The pad and the mechanism cooperate such that the contact surface is progressively contacted with the face during sealing engagement and peeled away from the face during peeling disengagement.

Abstract: A printer includes a printhead cartridge. The printhead cartridge has a printhead, an ink supply configured to supply ink to the printhead and a capper arranged to cap the printhead when the printhead is inoperative or not in use. A cradle unit engages with the printhead cartridge in a complementary manner and has a media transport mechanism for transporting print media between the printhead and the capper. A media supply cartridge is configured to supply the media to the cradle unit.

Abstract: An inkjet printer that has a printhead with an ink ejection face, an ink supply system for supplying ink to the printhead and a foaming system for generating a liquid foam on the ejection face. The liquid foam is a matrix of liquid membranes forming randomly-packed Voronoi polyhedra.

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 locating a printhead on a printer is provided in which a printhead is provided which has at least one integrated circuit having a plurality of ejection nozzles, the printhead is mounted to the printer by bringing each of a slot defined with respect to the x-coordinate of the printhead into cooperation with a mesa feature of the printer, an angled surface defined with respect to the x- and y-coordinates of the printhead into cooperation with a protrusion across the slot of the printer, and a flat surface defined with respect to the z-coordinate of the printhead into cooperation with protrusion located within the slot of the printer, and the location of the nozzles with respect to the x-, y- and z-coordinates is determined from the cooperation.

Abstract: A printer includes a printhead cartridge, in turn, having a printhead and ink supply for supplying ink to the printhead. The printhead includes a series of ink ejection integrated circuits (ICs) that are complementarily engaged together. Each IC includes spaced apart groups of nozzles configured to eject respective types of ink. The nozzles in each group are arranged to form staggered rows. A cradle unit complementarily engages with the printhead cartridge and has a media transport mechanism for transporting print media past the printhead. A media supply cartridge is configured to supply the media to the cradle unit.

Abstract: There is provided an ink pressure regulator for regulating a hydrostatic pressure of ink supplied to an inkjet printhead. The regulator comprises: an ink chamber having an ink outlet for fluid communication with the printhead via an ink line; an air inlet; a regulator channel having a first end communicating with the air inlet and a second end communicating with a headspace of the chamber, the second end defining a bubble outlet; and a wetting system for maintaining at least some liquid in the regulator channel, thereby ensuring that air entering the headspace first passes through the liquid. The regulator channel is dimensioned to control a Laplace pressure of air bubbles drawn from the bubble outlet as result of supplying ink to the printhead, thereby regulating a hydrostatic pressure of the ink.

Abstract: Provided is an ink supply bag for a printhead cartridge. The supply bag includes two profiled panels arranged generally coplanar and co-terminally attached to form an ink holding chamber, along with a folded leaf spring biasing said chamber into an expanded position. The supply bag further includes a connector assembly operatively arranging said chamber in fluid communication with ink supply channels of the printhead cartridge.

Abstract: A method of regulating a hydrostatic pressure of ink supplied to an inkjet printhead is provided. The method comprises withdrawing a volume of ink from an ink chamber and simultaneously bubbling air bubbles into the chamber via a bubble outlet to balance the withdrawn volume of ink. Each air bubble is defined by an air cavity trapped inside a film or a body of ink. The bubble outlet is dimensioned to control a Laplace pressure of the air bubbles, thereby regulating a hydrostatic pressure of the ink.

Abstract: Provided is a printhead cartridge for a pagewidth printer. The cartridge has a cartridge body, a number of ink supply bags positioned inside the cartridge body, each ink supply bag having two panels sealed together to form a collapsible ink holding chamber, a printhead assembly in fluid communication with the ink supply bags, the printhead assembly having ink supply channels, a leaf spring for biasing said ink holding chamber to increase an internal volume of the ink holding chamber and, a connector assembly providing fluid communication between the chamber and the ink supply channels of the printhead assembly.

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 cartridge suitable for regulating a hydrostatic pressure of ink supplied to an inkjet printhead is provided. The cartridge comprises an ink chamber having an ink outlet for fluid communication with the printhead via an ink line; an air inlet open to atmosphere; a bubble outlet for bubbling air bubbles into the chamber, each air bubble comprising an air cavity trapped inside a film or a body of ink; and an air channel connecting the air inlet and the bubble outlet. The bubble outlet is dimensioned to control a Laplace pressure of air bubbles drawn into the chamber as result of supplying ink to the printhead, thereby regulating a hydrostatic pressure of the ink.

Abstract: A printing cartridge for an inkjet printer is provided having an ink supply and a printhead assembly which has at least one printhead integrated circuit having ink ejection nozzles and an ink distribution support mounting the printhead integrated circuit(s). The ink distribution support distributes ink from the ink supply to the nozzles. The printing cartridge is mounted to the printer at the ink distribution support which is provided with at least one reference feature. The reference feature(s) serves to provide information on the location of the nozzles upon mounting of the printing cartridge to the printer. The printhead integrated circuit(s) has at least 6400 nozzles.

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: A printing cartridge for an inkjet printer is provided having an ink supply and a printhead assembly which has at least one printhead integrated circuit having ink ejection nozzles and an ink distribution support mounting the printhead integrated circuit(s). The ink distribution support distributes ink from the ink supply to the nozzles. The printing cartridge is mounted to the printer at the ink distribution support which is provided with at least one reference feature. The reference feature(s) serves to provide information on the location of the nozzles upon mounting of the printing cartridge to the printer. The ink distribution support is a molding formed from liquid crystal polymer. The liquid crystal polymer of the ink distribution support having thermal expansion characteristics similar to those of a silicon wafer of which the printhead integrated circuit is formed.