Abstract: A liquid supply member includes a first member, a second member, and a damper member disposed between the first member and the second member, wherein the first member is a member configured to form a liquid chamber, wherein the damper member is a flexible member configured to form the liquid chamber together with the first member, wherein the second member is a member configured to form an atmosphere communication chamber communicating with an ambient atmosphere at a position between the damper member and the second member and opposing the liquid chamber with the damper member in between, and wherein a protrusion portion is formed on a surface of the second member facing the atmosphere communication chamber at a position corresponding to a central part of the damper member, the protrusion portion protruding toward the damper member beyond a connection surface between the damper member and the second member.

Abstract: A liquid discharge head includes: individual channels arranged in a first direction; and first and second common channels each extending in the first direction. An opening of the first common channel and an opening of the second common channel are arranged at the same side with respect to the individual channels in the first direction. Each of the individual channels includes: a first communicating channel and a second communicating channel communicating with the first common channel, and a third communicating channel communicating with the second common channel. A midpoint in the first direction between a first connection position where the first common channel is connected to the first communicating channel and a second connection position where the first common channel is connected to the second communicating channel is positioned in a range of a third connection position where the second common channel is connected to the third communicating channel.

Abstract: A liquid discharging head, having a plurality of individual flow paths, a common flow path, a damper, a heater pattern, a heat source, and a connecting pattern, is provided. The individual flow paths are arrayed in a first direction. The common flow path extends in the first direction throughout the individual flow paths and is connected with the individual flow paths. The damper extends in the first direction throughout the individual flow paths. A part of the damper forms an inner face that defines an end of the common flow path in a second direction. The heater pattern is provided to the damper. The connecting pattern connects the heater pattern with the heat source. In a range, in which in the first direction the individual flow paths are arranged, the heater pattern extends in the first direction without inclining with respect to the first direction at 45 degrees or larger.

Abstract: A liquid discharge head includes a plurality of nozzles configured to discharge a liquid, the plurality of nozzles arrayed in a two-dimensional matrix forming a plurality of nozzle groups, a plurality of pressure chambers communicating with the plurality of nozzles, respectively, a plurality of supply ports communicating with the plurality of pressure chambers, respectively, a plurality of common-supply branch channels communicating with two or more of the plurality of pressure chambers through the plurality of supply ports, respectively, a plurality of collection ports communicating with the plurality of pressure chambers, respectively, and a plurality of common-collection branch channels communicating with two or more of the plurality of pressure chambers through the plurality of collection ports, respectively.

Abstract: A bonding structure includes a first part including a first bonding surface and a second part including a second bonding surface to be bonded to the first bonding surface of the first part with a first adhesive and a second adhesive different from the first adhesive. At least one of the first bonding surface and the second bonding surface includes a first region on which the first adhesive is applied, a second region on which the second adhesive is applied, and a third region disposed between the first region and the second region, the third region having a water repellency higher than a water repellency of each of the first region and the second region.

Abstract: Provided is a liquid ejection head including: a liquid ejection part including a pressure chamber, a nozzle, and a liquid discharge flow path; a liquid storage part including a supply liquid chamber and a discharge liquid chamber; and a flow path part including an intermediate supply flow path and an intermediate discharge flow path. The intermediate supply flow path and the intermediate discharge flow path are formed such that a minimum distance between an opening of the intermediate supply flow path on a side facing the liquid storage part and an opening of the intermediate discharge flow path on the side facing the liquid storage part is greater than a minimum distance between a liquid inlet and a liquid discharge outlet on a predetermined first opening forming surface.

Abstract: A print head can suppress contamination due to ink at the time of being mounted on a printing apparatus and/or after being detached from the printing apparatus. For this purpose, a positioning pin longer than a needle is provided in a joint unit of the print head, and the joint unit includes a shutter which closes an opening on a supply side and an opening on a collection side when the print head is detached.

Abstract: A liquid jetting apparatus includes: first pressure chambers aligned in a first direction; second pressure chambers aligned in the first direction and arranged at a distance from the first pressure chambers in a second direction orthogonal to the first direction; a first common channel extending in the first direction and communicating with the first pressure chambers; a second common channel extending in the first direction and communicating with the second pressure chambers; a third common channel extending in the first direction and communicating with the first and second pressure chambers; a substrate having a surface formed with the first and second pressure chambers and a space constituting at least part of the third common channel, vibration plates defining upper surfaces of the first and second pressure chambers, piezoelectric elements overlapping with the vibration plates, and a damper film defining an upper surface of the space.

Abstract: A liquid discharge head includes a plurality of nozzles to discharge a liquid; a plurality of pressure chambers communicating with the plurality of nozzles; a plurality of individual supply channels communicating with the plurality of pressure chambers; a plurality of supply ports communicating with the plurality of individual supply channels; a plurality of common-supply branch channels communicating with two or more of the plurality of individual supply channels through the plurality of supply ports; a common-supply main channel communicating with the plurality of common-supply branch channels; and a plurality of supply-side dampers, each of the plurality of supply-side dampers forming a part of a wall of each of the plurality of common-supply branch channels.

Abstract: A liquid jet head includes: a head chip including a channel to be filled with ink; a manifold that supports the head chip and includes an ink flow path communicating with the ejection channel; and a heater and a drive board that are supported on the manifold and heat ink inside the ink flow path. The ink flow path extends in a meandering manner.

Abstract: An inkjet head includes a substrate having plural ink inlet holes arranged along a first direction and plural ink outlet holes arranged generally along the first direction such that adjacent ink outlet holes are offset along the first direction, a plurality of partitioning walls made of piezoelectric material that define pressure chambers therebetween, each of the partitioning walls disposed on the substrate and generally extending in a second direction that crosses the first direction between the ink inlet holes and the ink outlet holes, and a nozzle plate disposed on the partitioning walls and having a plurality of nozzles, each of the nozzles being arranged on one of the pressure chambers.

Abstract: A liquid discharge head includes a plurality of nozzles, a plurality of individual liquid chambers, a common liquid chamber, a deformable damper, and a damper chamber. The plurality of nozzles is arrayed in a nozzle array direction, to discharge liquid. The plurality of individual liquid chambers is communicated with the plurality of nozzles. The common liquid chamber supplies liquid to the plurality of individual liquid chambers. The deformable damper constitutes part of a wall face of the common liquid chamber. The damper chamber is disposed along the nozzle array direction with the damper interposed between the damper chamber and the common liquid chamber. The damper chamber extends to an outer area in the nozzle array direction than an individual liquid chamber of the plurality of individual liquid chambers at each end in the nozzle array direction.

Abstract: A liquid discharge head includes a plurality of nozzles to discharge liquid droplets; a plurality of individual liquid chambers to which the plurality of nozzles communicates; a common liquid chamber, to supply a liquid to the plurality of individual liquid chambers, including a wall disposed opposite a side of an individual liquid chamber and formed of a deformable damper; a frame forming the common liquid chamber and a damper chamber disposed opposite the common liquid chamber with the damper in between, in which the frame accommodates a damper member including the damper and includes a concave portion that serves as the damper chamber; and an opening opposite the damper and a support member to support the damper member, in which the opening and the support member is disposed on a bottom of the concave portion facing the common liquid chamber.

Abstract: A valve includes a seat having a through hole through which ink flows and a valve body that is configured to be in contact with the seat to close the through hole such that the valve is in a closed state and to be separate from the seat to open the through hole such that the valve is in an open state. At least one of the seat and the valve body is configured to move relative to the other of the seat and the valve body while the valve is in the closed state.

Abstract: When opaque films are deposited on semi-conductor wafers, underlying alignment marks may be concealed. The re-exposure of such alignment marks is one source of resulting surface topography. In accordance with one implementation, alignment marks embedded in a wafer may be exposed by removing material from one or more layers and by replacing such material with a transparent material. In accordance with another implementation, the amount of material removed in an alignment mark recovery process may be mitigated by selectively ashing or etching above a stop layer.

Abstract: An inkjet-head includes a first flow path member in which a first flow path is formed; and a second flow path member in which a second flow path is formed and to which the first flow path member is bonded. The second flow path has an intra-joint-surface flow path which is formed by surrounding, with a first adhesive, a peripheral edge of a groove formed in the second flow path member and bonding the first flow path member thereto. A joint space is formed and includes the intra-joint-surface flow path due to surrounding, with a second adhesive, an outer periphery of the intra-joint-surface flow path and bonding the second flow path member and the first flow path member thereto. At least a part of an atmosphere opening path which causes the joint space to be open to the atmosphere is formed by sealing an atmosphere opening groove formed in the joint space using a film.

Abstract: A liquid ejection head includes a nozzle plate, a channel plate, a common-liquid-chamber member, and a deformable damper area. The nozzle plate includes plural nozzles to eject droplets of liquid. The channel plate includes individual liquid chambers communicated with the nozzles. The common-liquid-chamber member includes a common liquid chamber to supply the liquid to the individual liquid chambers. The deformable damper area forms a wall face of the common liquid chamber. The channel plate has an end in a direction perpendicular to a nozzle array direction in which the nozzles are arrayed. The end is opposed to a portion of the damper area and has a relief at a side facing the damper area to permit deformation of the damper area.

Abstract: A printhead is disclosed herein. The printhead includes a die substrate having a surface. A trench is defined in the die substrate surface, and a support is positioned in the trench. A compliant membrane is attached to the die substrate surface, and a gap is defined between a distal end of the support and the compliant membrane.

Abstract: A recording head includes an ejection portion configured to eject ink, a first flow path forming member and a second flow path forming member joined to each other between which a flow path for supplying ink to the ejection portion, a buffer chamber for keeping gas, and a communication passage between the flow path and the buffer chamber are formed, a through-hole formed on the second flow path forming member configured to penetrate the second flow path forming member to open onto a surface on an opposite side of a joint surface facing the first flow path forming member, and a communication port formed at a position facing an interior of the buffer chamber, configured to communicate with the through-hole, wherein the communication port is arranged at a position higher than a wall of a top surface that constitutes a communication passage in a usage state of the recording head.

Abstract: A printhead includes a nozzle plate including a plurality of nozzles and a plurality of liquid chambers. Each liquid chamber is in fluid communication with a respective one of the plurality of nozzles. An acoustic dampening structure includes a plurality of sets of air pockets and liquid flow restrictors. Each liquid chamber is in fluid communication with one of the sets of air pockets and liquid flow restrictors. A common liquid supply manifold is in fluid communication with each liquid chamber through the liquid flow restrictor associated with the liquid chamber.

Abstract: A printhead includes a plurality of liquid channels and a nozzle plate. The nozzle plate includes a plurality of nozzles and an acoustic dampening structure. The acoustic dampening structure includes a plurality of sets of air pockets and liquid flow restrictors. Each set of air pockets and liquid flow restrictors is in fluid communication with a respective one of the plurality of nozzles. Each liquid channel is in fluid communication with the respective one of the plurality of nozzles through the associated liquid flow restrictor. A common liquid supply manifold is in fluid communication with the plurality of liquid chambers.

Abstract: A liquid jet apparatus is provided. The liquid jet apparatus includes a first damper chamber and a second damper chamber, a release path operatively associated with both the first damper chamber and the second damper chamber, and a control path connecting the first damper chamber, the second damper chamber, and the release path to each other.

Abstract: An apparatus and method are for printing a fluid material by a continuous jet printing technique. The apparatus includes a flow restricting structure arranged near an outflow opening for restricting a flow of the material between a reservoir and the outflow opening by a restricted passage through the flow restricting structure. Furthermore, the flow restricting structure, an actuating surface, and a nozzle are arranged to bind a micro volume directly adjacent an inside of the outflow opening for the purpose of guiding or reflecting pressure variations generated by the pressure regulating mechanism towards the outflow opening.

Abstract: An apparatus includes a bypass flow path between an ink supply port and a vent port and a primary flow path between the ink supply port and an ink delivery port. A first flow velocity of the bypass flow path is higher than a second flow velocity of the primary flow path. The first flow velocity induces bubbles to travel via the bypass flow path instead of the primary flow path.

Abstract: A pressure-balanced mechanism for a print head includes a fixation frame, a pivot point assembly, a print head assembly and a depression assembly. The pivot point assembly further includes a supportive shaft and a pivotal structure. The supportive shaft is connected to the fixation frame. The pivotal structure is to movably sleeve the supportive shaft. The print head assembly further includes a frame structure and a print head module. The frame structure is to sleeve the supportive shaft and has the pivotal structure to contact at an inside thereof. The print head module is mounted inside the frame structure by separating from the pivotal structure. The depression assembly further includes a fix shaft and two depression structures. The fix shaft is connected to the fixation frame. The depression structure slippery along the fix shaft can contact elastically the frame structure outside to the print head module.

Abstract: A liquid jet apparatus is provided. The liquid jet apparatus includes a first damper chamber and a second damper chamber, a release path operatively associated with both the first damper chamber and the second damper chamber, and a control path connecting the first damper chamber, the second damper chamber, and the release path to each other.

Abstract: An image forming apparatus includes a liquid ejection head, a head tank, a liquid storage container, a liquid feed device, a supply valve, an exhaust passage, a float valve, an air release valve, and a suction device. The exhaust passage is disposed in the head tank and communicated with an ambient air. The float valve is disposed in the head tank to close the exhaust passage in response to an amount of liquid in the head tank. The air release valve opens and closes the exhaust passage of the head tank. When the suction device exhausts air from the exhaust passage with the air release valve open, the liquid feed device is driven to pressurize and feed the liquid.

Abstract: A liquid jet apparatus is provided. The liquid jet apparatus includes a first damper chamber and a second damper chamber, a release path operatively associated with both the first damper chamber and the second damper chamber, and a control path connecting the first damper chamber, the second damper chamber, and the release path to each other.

Abstract: A printhead includes a plurality of liquid channels and a nozzle plate. The nozzle plate includes a plurality of nozzles and an acoustic dampening structure. The acoustic dampening structure includes a plurality of sets of air pockets and liquid flow restrictors. Each set of air pockets and liquid flow restrictors is in fluid communication with a respective one of the plurality of nozzles. Each liquid channel is in fluid communication with the respective one of the plurality of nozzles through the associated liquid flow restrictor. A common liquid supply manifold is in fluid communication with the plurality of liquid chambers.

Abstract: A printhead includes a nozzle plate including a plurality of nozzles and a plurality of liquid chambers. Each liquid chamber is in fluid communication with a respective one of the plurality of nozzles. An acoustic dampening structure includes a plurality of sets of air pockets and liquid flow restrictors. Each liquid chamber is in fluid communication with one of the sets of air pockets and liquid flow restrictors. A common liquid supply manifold is in fluid communication with each liquid chamber through the liquid flow restrictor associated with the liquid chamber.

Abstract: A liquid ejection head includes a nozzle plate, a channel plate, a common-liquid-chamber member, and a deformable damper area. The nozzle plate includes plural nozzles to eject droplets of liquid. The channel plate includes individual liquid chambers communicated with the nozzles. The common-liquid-chamber member includes a common liquid chamber to supply the liquid to the individual liquid chambers. The deformable damper area forms a wall face of the common liquid chamber. The channel plate has an end in a direction perpendicular to a nozzle array direction in which the nozzles are arrayed. The end is opposed to a portion of the damper area and has a relief at a side facing the damper area to permit deformation of the damper area.

Abstract: A liquid ejecting head includes: a head main body having a manifold in which ink is retained, a compliance section absorbing a pressure change inside the manifold and a compliance space provided opposite to the compliance section, and discharging liquid from nozzles communicating with the manifold; an air chamber communicating with the compliance space and outside; and a liquid reservoir communicating with a liquid flow path supplying liquid to the manifold and volume of which is larger than the manifold, wherein the air chamber and the ink reservoir are divided by a resin adhesive where water vapor is capable of penetrating.

Abstract: A liquid discharging apparatus, which discharges liquid from at least one nozzle on the basis of data, which includes a controller. When the controller is in a standby state and no liquid is being discharged from the at least one nozzle on the basis of the data, the controller performs a drawing operation wherein the liquid is drawn into the nozzle in a direction that is opposite to the direction that the ink is discharged from the at least one nozzle in order to form a space at a distal end portion of the at least one nozzle where no liquid is present.

Abstract: A liquid jet apparatus is provided. The liquid jet apparatus includes a first damper chamber and a second damper chamber, a release path operatively associated with both the first damper chamber and the second damper chamber, and a control path connecting the first damper chamber, the second damper chamber, and the release path to each other.

Abstract: An ink-based digital printing system for variable data lithographic printing includes an imaging member and a dampening fluid/carrier patterning system. An inkjet-type device of the patterning system jets material onto an imaging member. The as-jetted material includes dampening fluid and carrier component such as a wax jetted in a single phase. Upon contact with a surface of an imaging member, the jetted material cools and phase separation occurs, the dampening fluid leaching to a surface of the solid component on the imaging member surface, dampening the solid component, which forms an image according to image data input to the patterning system.

Abstract: An inkjet print head configured to smoothly discharge high viscosity ink includes a nozzle part configured to discharge ink, a supply flow path part configured to define a flow path to supply ink to be discharged from the nozzle part, and a micro pattern part formed at least one portion of the supply flow path part that is configured to reduce of a flow resistance of the ink flowing through the supply flow path part.

Abstract: The invention provides a damper apparatus including a housing having a valve chamber and reciprocally moving integrally with a carriage, an inlet port communicating an ink flow channel on the upstream side and the valve chamber, an outlet port communicating the ink flow channel on the downstream side and the valve chamber, and a spherical valve body stored so as to be movable in the valve chamber, wherein the valve body moves relatively to a position for closing the inlet port or the outlet port upon reception of the inertial force in association with the acceleration and deceleration to close the ink flow channel when the carriage is accelerated or decelerated, and the valve body moves relatively to a position for opening the inlet port and the outlet port under its own weight to open the ink flow channel when the carriage is not accelerated and decelerated.

Abstract: A system for achieving accurate page yields includes a first droplet generator comprising a nozzle aperture with a first cross sectional area and a first passageway to an ink reservoir. A second droplet generator includes a nozzle aperture with a second cross sectional area that is larger than the first cross sectional area and a second passageway to the ink reservoir with minimum cross sectional area that is smaller than the second cross sectional area. A method for achieving accurate page yields is also provided.

Abstract: A liquid jet apparatus is provided. The liquid jet apparatus includes a first damper chamber and a second damper chamber, a release path operatively associated with both the first damper chamber and the second damper chamber, and a control path connecting the first damper chamber, the second damper chamber, and the release path to each other.

Abstract: A liquid droplet discharge head includes a plurality of discharge unit parts, each of which extends in a first direction. The discharge unit parts are arranged in a second direction intersecting with the first direction. Each of the discharge unit parts includes: a nozzle column configured by a plurality of nozzles; a liquid droplet discharge surface; a common flow path; a plurality of pressure chambers; a damper chamber extending in the first direction; a damper wall arranged between the damper chamber and the common flow path; and a pillar part connecting the damper wall and a separate wall that is different from the damper wall in the damper chamber. A position of the pillar part of at least one discharge unit part of the discharge unit parts in the first direction is deviated from a position of the pillar part in the other discharge unit part.

Abstract: A liquid ejection head includes nozzles, a channel member, a common liquid chamber member, a damper member, a damper chamber formation member, a first adhesive, and a second adhesive. The channel member includes individual liquid chambers communicated with the nozzles. The common liquid chamber member forms a common liquid chamber to supply liquid to the individual liquid chambers. The damper member has a deformable area forming a portion of a wall of the common liquid chamber. The damper chamber formation member forms a damper chamber disposed opposing the common liquid chamber via the deformable area. The first adhesive is disposed between the damper member and the common liquid chamber member. The second adhesive is disposed between the damper member and the damper chamber formation member. The deformable area of the damper member has a peripheral portion fringed with the first adhesive and the second adhesive.

Abstract: A liquid ejecting apparatus includes a liquid ejecting head having a nozzle that ejects liquid and a pressure chamber in communication with the nozzle. A pressure generator causes pressure fluctuation in the liquid retained in the pressure chamber. The liquid ejecting head is capable of ejecting the liquid from the nozzle as a result of operation of the pressure generator. A driving signal generating section generates a driving signal having an ejection pulse for driving the pressure generator to eject the liquid from the nozzle. The ejection pulse is a voltage waveform four waveform portions having, respectively, voltage levels V1, V2, V3 and V4 that satisfy the following conditions (A) and (B). 0?V3?0.4×V2??(A) 0.

Abstract: A liquid ejecting head having a liquid-flow space through which a liquid flows from a liquid supply source toward liquid-drop ejecting nozzles, a generally planar partition portion extending in a direction intersecting a vertical direction and partially defining the liquid-flow space, and further partially defining first and second chambers such that the two chambers are arranged in a horizontal direction on respective opposite sides of the partition wall, the first and second chambers having a larger dimension in the vertical direction than in the horizontal direction, in cross section taken in a plane parallel to the vertical direction and a direction of arrangement of the two chambers, and a planar filter fixed to the partition portion so as to extend in a direction intersecting the horizontal direction, along a surface of the partition portion and configured to capture foreign matters contained in the liquid in at least one of the two chambers.

Abstract: A liquid dispenser includes a liquid supply channel, a liquid return channel, and a liquid dispensing channel. The liquid dispensing channel includes a wall. The wall includes a surface. A portion of the wall defines an outlet opening. A drain is located in the wall downstream from the outlet opening. The drain includes a radius of curvature as viewed from a direction perpendicular to the wall. A liquid supply provides liquid that flows from the liquid supply channel through the liquid dispensing channel to the liquid return channel. A diverter member selectively diverts a portion of the flowing liquid through the outlet opening of the liquid dispensing channel.

Abstract: A damping device includes an elastic membrane that serves as a wall of a part of a supply channel between a reservoir unit that contains liquid and a droplet discharging unit that discharges the liquid in the form of a droplet; a wall portion provided outside of the supply channel such that a gas chamber is provided between the wall portion and the elastic membrane; and a resistance unit provided on the wall portion, the resistance unit providing ventilation and generating a resistance force against a movement of the elastic membrane.

Abstract: The droplet ejection head includes: a plurality of droplet ejection units which include ejection ports through which droplets of liquid are ejected, pressure chambers which are connected to the ejection ports through connection channels, drive elements which apply pressure to the liquid in the pressure chambers, supply channels through which the liquid is supplied to the pressure chambers, and return channels through which the liquid is returned from the connection channels; a common supply channel through which the liquid is supplied to the supply channels; and a common return channel through which the liquid is returned from the return channels, the common return channel including a stagnant flow region having a bubble collection section where bubbles are collected, wherein pressure variation occurring in each pressure chamber when ejecting a droplet of the liquid propagates more readily in the common return channel than in the common supply channel.

Abstract: An inkjet carriage printer includes a carriage for transporting an inkjet printhead in a carriage scan direction across the print region in reciprocating fashion, the carriage including an encoder sensor; a linear encoder disposed along the carriage scan direction; and a controller for controlling the motor on the basis of signals provided by the encoder sensor, the controller includes: a first motion control mode for damping carriage vibrations during a period when the carriage is in the print region; and a selectable second motion control mode for dislodging air bubbles for removal from the inkjet printhead, wherein the selectable second motion control mode is configured to decrease damping in order to set the carriage into oscillation.

Abstract: A method of operating an inkjet printer including an inkjet printhead having an ink inlet, the inkjet printhead mounted on a motor-driven carriage having an encoder sensor, the method including sending a signal from the encoder sensor to a controller to indicate a position of the motor-driven carriage; determining a velocity of the motor-driven carriage; implementing a first motion control mode during a period when the inkjet printhead is printing, wherein the first motion control mode includes a first signal for damping vibrations in order to provide a substantially constant velocity of the carriage; selectively implementing a second motion control mode when the inkjet printhead is not printing, wherein the second motion control mode includes a second signal for enhancing vibrations of the carriage in order to dislodge air bubbles in the printhead; and removing air corresponding to the air bubbles from the printhead.

Abstract: A liquid jet apparatus is provided. The liquid jet apparatus includes a first damper chamber and a second damper chamber, a release path operatively associated with both the first damper chamber and the second damper chamber, and a control path connecting the first damper chamber, the second damper chamber, and the release path to each other.

Abstract: An image forming apparatus includes plural heads each having a nozzle configured to discharge a droplet of a recording fluid; a distributing member to which the plural heads are attached, the distributing member having an inlet portion, a supply channel portion, and a common fluid chamber communicated with the inlet portion and configured to supply the recording fluid to the plural heads; and a fluid containing unit configured to supply the recording fluid to the distributing member via the inlet portion and the supply channel portion. The distributing member includes a flow-directing wall disposed between the supply channel portion and the common fluid chamber.