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WO2018199881A1 - Récipients de fluide - Google Patents

Récipients de fluide Download PDF

Info

Publication number
WO2018199881A1
WO2018199881A1 PCT/US2017/029084 US2017029084W WO2018199881A1 WO 2018199881 A1 WO2018199881 A1 WO 2018199881A1 US 2017029084 W US2017029084 W US 2017029084W WO 2018199881 A1 WO2018199881 A1 WO 2018199881A1
Authority
WO
WIPO (PCT)
Prior art keywords
flexible diaphragm
actuator
fluid container
locator
regulated chamber
Prior art date
Application number
PCT/US2017/029084
Other languages
English (en)
Inventor
Eugene Cahill
Brian CRONLY
Cormac O'BEIRNE
Brian Walsh
James MANNION
Original Assignee
Hewlett-Packard Development Company, L.P.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Hewlett-Packard Development Company, L.P. filed Critical Hewlett-Packard Development Company, L.P.
Priority to PCT/US2017/029084 priority Critical patent/WO2018199881A1/fr
Publication of WO2018199881A1 publication Critical patent/WO2018199881A1/fr

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J2/00—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
    • B41J2/005—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by bringing liquid or particles selectively into contact with a printing material
    • B41J2/01—Ink jet
    • B41J2/17—Ink jet characterised by ink handling
    • B41J2/175—Ink supply systems ; Circuit parts therefor
    • B41J2/17596—Ink pumps, ink valves
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J2/00—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
    • B41J2/005—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by bringing liquid or particles selectively into contact with a printing material
    • B41J2/01—Ink jet
    • B41J2/17—Ink jet characterised by ink handling
    • B41J2/175—Ink supply systems ; Circuit parts therefor
    • B41J2/17503—Ink cartridges
    • B41J2/17513—Inner structure

Definitions

  • Print devices such as Inkjet printers and 3D printers (otherwise referred to as additive manufacturing devices) may eject a print fluid such as ink or another agent onto a medium in operation, such as a print media (e.g. in sheet form) or a build material in the context of additive manufacturing.
  • a print media e.g. in sheet form
  • a build material e.g. in the context of additive manufacturing.
  • Such print devices may be provided with an integral or removable fluid container for storing such a print fluid,
  • a fluid container may be provided with a gas control valve to control a flow of relief gas into the fluid container to displace print fluid or compensate for the discharge of a print fluid from the fluid container.
  • Figures 1 and 2 schematically show an example fluid container in cross-section
  • Figure 3 is a flowchart of a method of assembling a fluid container
  • Figure 4 schematically shows a further example fluid container in cross-section
  • Figure 5 is a flowchart of a further example method of assembling a fluid container
  • FIGS 6 and 7 schematically show an example flexible diaphragm installed in an example fluid container in cross-section and normal views
  • Figure 1 shows an example fluid container 100 comprising a reservoir 1 10 and a regulated chamber 120.
  • the reservoir 1 10 is to contain a print fluid for supply to the regulated chamber.
  • the regulated chamber is to receive print fluid from the reservoir 1 10.
  • the regulated chamber 120 comprises a wall 130 having an opening 132 forming part of a gas flow pathway 50 in the fluid container 100.
  • the opening 132 is a vaive inlet port 132 and the wall further comprises a vaive outlet port 134.
  • the reservoir 1 10 is disposed on the other side of the wail 130 from the regulated chamber such that the wall 130 separates the regulated chamber 120 from the reservoir 1 10.
  • the reservoir may be disposed elsewhere in the fluid container.
  • the wall 130 may be an outside wail of the fluid container, there may be another component of the fluid container on the opposite side of the wail 130 from the regulated chamber 120, or there may be free space on the other side of the wall 130 from the regulated chamber.
  • a flexible diaphragm 150 is disposed within the regulated chamber 120 and extends over the opening 132 (in this example, the valve inlet port 132) to separate the print fluid from the gas flow pathway 50 through the opening 132.
  • the wall 130 defines the valve inlet port 132 and the vaive outlet port 134 adjacent one another such, and the flexible diaphragm extends over both ports 132, 134 so that there is manifold 54 in the gas flow pathway 50 which is defined between the wall 130, the ports 132, 134 and a gas path side of the flexible diaphragm 150.
  • the wall 130 and the flexible diaphragm 150 comprise cooperating formations which are fitted together with an interference fit so that the flexible diaphragm 150 is retained on the wall and a seal is maintained therebetween to prevent migration of gas from the gas flow pathway 50 into the regulated chamber.
  • the co-operating formations comprise a groove and a corresponding projection.
  • Each of the groove and corresponding projection can be provided on either one of the flexible diaphragm or the wall, in this particular example, the wall 130 comprises a mount 136 which projects from a surrounding profile of the wall and defines a groove 138 for receiving a projection 152 of the flexible diaphragm in the form of a peripheral flange or rim.
  • the interference fit between the co-operating formations is to retain a periphery (or peripheral region) 154 of the flexible diaphragm extending over the mount 136 in place against the mount 136 when an inner region of the flexible diaphragm is deformed towards or away from the opening 132 in use, as will be described in detail below.
  • the flexible diaphragm may be circular and the mount may be annular.
  • a regulator unit 122 and an actuator 124 are disposed within the regulated chamber 120.
  • the regulator unit 122 is to move between a plurality of extension states (i.e. at least two configurations) to drive movement of the actuator 124, which in turn acts on the flexible diaphragm 150 to move it between an open configuration in which the gas flow pathway is open and a closed configuration in which the diaphragm 150 seals against the opening 132 to dose the gas flow pathway 150 therethrough.
  • the regulator unit 122 may comprise a sealed expandable chamber to expand and contract in response to pressure changes within the regulated chamber 122 in use.
  • the regulator unit may comprise a spring. Pressure changes in the regulated chamber 120 may occur as print fluid is discharged from the regulated chamber.
  • the regulator unit 122 may be passively actuating.
  • the regulator unit 122 may comprise a driver for actively moving it between extension states (configurations), for example in response to a control signal.
  • the regulator unit 122 may be to expand in response to a signal relating to a priming operation so as to act on the print fluid in the regulated chamber 120 to cause it to be discharged.
  • the regulator unit 122 comprises an expandable chamber 126 and a drive arm 128 extending from the chamber 126 to follow the extension states of the chamber.
  • the actuator 124 is to be driven by the regulator unit 122 (in this example, by the drive arm 128 in particular) to act against the flexible diaphragm 150 as described above.
  • the actuator 124 may be coupled to the regulator unit 122, for example by a rigid connection or a pivotable rotation, in some examples, the actuator 124 may be integrally formed with the regulator unit 122.
  • the actuator may be separate from the regulator unit and positioned to be drive by the regulator unit to actuate the flexible diaphragm to move between the open configuration and the closed configuration in at least one direction, in some examples, the regulator unit 122 and actuator 124 may operate to drive the flexible diaphragm 150 in one direction between the open and closed configurations and not the other.
  • the flexible diaphragm 150 may be resiliency biased to one of the configurations.
  • the gas flow pathway 50 comprises an inlet portion 52 extending from an inlet of the fluid container to the valve inlet port 132, the manifold 54 as described above, and an outlet portion extending through the valve outlet port 134,
  • the outlet portion opens info the reservoir 1 10, but in other examples the outlet portion may be directed to another component of the fluid container, and may bypass the reservoir 1 10.
  • Figure 1 shows the regulator unit 122 in a first configuration or expansion state corresponding to an open configuration of the flexible diaphragm 150.
  • the actuator 124 is not driven against the flexible diaphragm to dose the opening 132.
  • the regulator unit 122 may be to actively lift the actuator 124 away from the opening when it moves to the first configuration (first expansion state).
  • Lifting of the actuator 124 may thereby either draw the flexible diaphragm away from the opening to its open configuration, or may leave the flexible diaphragm 150 free to move to its open configuration under resilient bias, in other examples, the regulator unit 122 may be separate from the actuator 124 so that movement of the regulator unit 122 to the first configuration may release the actuator 124 and thereby by permit the flexible diaphragm to move to its open configuration under a resilient biasing force.
  • Figure 2 shows the example fluid container 100 of Figure 1 with the regulator unit 122 in a second expansion state or configuration in which it is compressed (relative the first expansion state of Figure 1 ) so that the drive arm acts on the actuator 124 to drive the flexible diaphragm into its closed configuration in which it seals against the opening 132 to close the gas flow pathway 50 therethrough.
  • the reservoir 1 10 and regulated chamber 120 of the fluid container 100 may be charged with a print fluid and the fluid container may be installed in a print apparatus for use in a printing operation.
  • Print fluid may be discharged or drawn from the regulated chamber 120, for example by application of negative pressure in the print apparatus.
  • Discharge of print fluid may reduce the pressure of print fluid within the volume of the regulated chamber 120, thereby causing the regulator unit 122 to expand from a second configuration as shown in Figure 2 to a first configuration as shown in Figure 1 to open the gas flow pathway 50.
  • a flow of relief gas may therefore be permitted to flow along the gas flow pathway 50, in the example of Figures 1 and 2, the relief gas flows into the reservoir 1 10, thereby enabling print fluid within the reservoir to flow or be displaced into the regulated chamber 120 to replenish that discharged in the print operation.
  • the flow of relief gas may result in an increase in pressure in the regulated chamber so that the regulator unit 122 returns to the second configuration, thereby driving the actuator to act on the flexible diaphragm 150 to close the gas flow pathway 50.
  • the interference fit between co-operating formations in the flexible diaphragm 150 and the wail 130 may enable ease of assembly, for example by simple push-fitting of the co-operating formations together without the need for any clamping arrangement.
  • the seal formed therebetween prevents the migration of gas from the gas flow pathway to the regulated chamber.
  • the reguiator unit 122 and actuator 124 may be used to close the gas flow pathway, the co-operating formations and the seal that they provide serve to prevent migration of gas in several examples, in a first example, the flexible diaphragm may be in the closed position, but gas may be accumulated downstream of the valve outlet port 134, for example, gas may have accumulated to displace print fluid discharged from the reservoir 1 10 such that it remains in fluid communication with the outlet port 134, or the fluid container may in an orientation other than an installed configuration such that accumulated gas may be disposed above denser print fluid and in communication with the outlet port 134 owing to the orientation of the fluid container.
  • the fluid container may be oriented so that accumulated gas is disposed above print fluid at an upper region of the reservoir 1 10 away from the valve outlet port 134.
  • the valve outlet port 134 may disposed towards a lower end of the reservoir in the installed configuration.
  • an elevated pressure differential may exist between gas downstream of the valve outlet port 134 and the regulated chamber.
  • the co-operating formations are to prevent migration of gas across the flexible diaphragm into the regulated chamber despite this pressure differential.
  • the flexible diaphragm may be in the open position such that a flow of relief gas enters the fluid container through the manifold 54.
  • Accumulated gas in the regulated chamber of a fluid container may inhibit start-up or proper function of the fluid container.
  • Figure 3 shows an example method 300 of assembling a fluid container which will now be described, by way of example with reference to the fluid container 100.
  • the regulated chamber 120 is provided, for example by manufacture of a body for the fluid container by injection moulding, the body defining at least the chamber 120 and optionally other components of the fluid container such as the reservoir 1 10.
  • the chamber 120 is defined (at least partly) by the wall 130 having the opening 132.
  • the opening 132 may be formed by a machining process, or may otherwise be formed by a bulk forming process of the body for the fluid container, such as injection moulding.
  • the wall 130 includes a formation to co-operate with the diaphragm such as the groove 138 described above.
  • the groove 138 may be formed by machining or a bulk forming process such as injection moulding, for example.
  • the flexible diaphragm 150 is push-fitted into the wail within the regulated chamber 120 so that the co-operating formations of the flexible diaphragm and the wail are fitted together.
  • the flexible diaphragm is thereby retained and there is a seal between the diaphragm and the wall at the co-operating formations to prevent migration of gas into the regulated chamber from the gas path side of the flexible diaphragm,
  • the actuator 124 and the regulator unit 122 are installed in the regulated chamber 120 so that the actuator is to be driven by the regulator unit to deform the flexible diaphragm between the open configuration in which the gas flow pathway 50 is open and the closed configuration in which the gas flow pathway is closed.
  • Figure 4 shows a further example fluid container 200.
  • the example fluid container 200 is similar to that described above with respect to Figures 1 and 2 and like reference numerals have been used for like features.
  • the example fluid container comprises a reservoir 1 10 and regulated chamber 120 and flexible diaphragm 150 as described above except as described below.
  • the regulated chamber 120 has a wall 230 in which a valve inlet opening 132 and valve outlet opening 134 are formed as described above.
  • the wail 230 differs from the wail 130 described above with respect to Figures 1 and 2 in the configuration of the mount 238.
  • the mount 236 projects from the surrounding profile of the wall 230 and defines a groove 138 as described above.
  • An outer portion of the mount 236 extends into the regulated chamber beyond the level of an inner portion of the mount to provide a peripheral guide 240.
  • the flexible diaphragm has a revolved profile about valve axis A, and is deformable along the valve axis A to open and close the valve inlet port 132 as described above.
  • the peripheral guide 240 has a greater axial extent into the regulated chamber 120 along the valve axis than an inner portion of the mount 138.
  • a regulator unit 222, locator 242 and actuator 224 are disposed in the regulated chamber 120.
  • the regulator unit 222 comprises a sealed expandable chamber 226 similar to that described above and a pivotable drive arm 228.
  • the pivotable drive arm 228 is mounted to a pivot point on an opposing side of the regulator expandable chamber 226 to the actuator 224.
  • the pivot point may be a mount on a wall of the regulated chamber 120, for example.
  • expansion and contraction of the chamber 226 causes pivoting movement of the drive arm 228.
  • the actuator 224 comprises a spherical bail actuator received and retained in a locator collar 242.
  • the locator collar 242 is in the form of a cylinder having a diaphragm end to oppose the diaphragm 150 and a tapered opposing end defining an opening for the drive arm 228.
  • the locator collar 242 is installed in the regulated chamber 120 so that the diaphragm end is received in the guide 240.
  • the locator collar 242, guide 240 and regulator unit 222 are co-operatively sized so that, with the locator 242 received in the guide, the actuator 224 received in the locator collar 242, and the drive arm 228 of the regulator unit disposed over the actuator 224, the locator is retained between the guide 240 and drive arm 228. Accordingly, the actuator 224 is permitted to move within the locator 242 but is retained therein.
  • the locator collar 242 has a tapered inner profile so that the actuator 224 can be received in the diaphragm end of the locator collar before installation into the guide 240, but cannot pass through the drive opening for the drive arm 228.
  • the regulator unit 222, locator collar 242, actuator 224 and guide 240 are cooperative sized so that in use the drive arm 228 (across its range of movement) limits movement of the actuator ball 224 and thereby the locator collar so that the locator collar is retained in the guide.
  • the locator collar With the locator collar retained in the guide 240, it restricts the range of movement of the actuator ball and serves to guide it towards a central portion of the flexible diaphragm in use, thereby ensuring that actuation of the actuator ball 224 towards the opening 224 causes the central portion of the flexible to seat against the opening 132.
  • the locator collar has a profiled interior surface which tapers towards the drive opening. Further, the locator collar has a tapered end so that a in use a long side of the locator collar farthest from the regulator unit extends may project over the actuator ball to limit axis movement, whereas a short side of the collar nearest the regulator unit is relatively shorter to permit the drive arm 228 to engage the actuator ball.
  • the regulated chamber 120 in this example further comprises a discharge outlet 290 provided in a lower wail of the regulated chamber 120 for discharging print fluid therefrom, for example to print apparatus.
  • Figure 4 further shows a re-supply channel 292 extending between the primary reservoir 1 10 and the regulated chamber 120 in a lower portion of the wall 230 therebetween for supplying print fluid from the primary reservoir 1 10 to the regulated chamber 120.
  • the re-supply channel 292 may be fitted with a valve in some examples.
  • the re-supply channel 292 is shown in dashed lines to indicate that it is not behind the cross-section shown in Figure 4. it will be appreciated that the re-supply channel 292 does not intersect the gas supply pathway 50.
  • This arrangement may enable particularly simple assembly as each of the components can be simply located without special clamping and securing requirements.
  • Figure 5 shows an example method of assembling a fluid container which will now be described, by way of example with respect to the fluid container 200 of Figure 4.
  • a body for the fluid container 200 which defines the regulated chamber 120 and the wail 230 is provided as described above with respect to Figure 3, and the flexible diaphragm is push-fitted by way of the co-operating formations in the wail 230 and the flexible diaphragm so that it is retained on the wall 230 by the interference fit.
  • the actuator ball 224 is placed inside the locator collar 242, and both are loosely installed into the guide 240 without clamping against the flexible diaphragm. At this point of installation, the actuator 224 and locator collar 242 could be freely removed from the guide 240.
  • the regulator unit 222 is installed so that the drive arm 228 opposes the actuator 224 through the drive opening in the locator collar 242.
  • the drive arm 228 thereby limits axial movement of the actuator 224 away from the opening, and thereby also restricts axial movement of the locator collar 242 so that it is retained within the guide 240.
  • the locator collar retained in the guide 240, it restricts the range of movement of the actuator bail and serves to guide it towards a central portion of the flexible diaphragm in use, thereby ensuring that actuation of the actuator bail 224 towards the opening 224 causes the central portion of the flexible to seat against the opening 132.
  • Figure 6 shows a partial cross section of a further example fluid container 600.
  • the example fluid container 600 is similar to the examples described above but differs in aspects of the flexible diaphragm 650 and cooperating wall 630, to which the following further discussion is limited.
  • Figure 6 shows a wail 630 comprising a valve inlet opening 832 and a valve outlet opening 634.
  • the wall 830 separates a regulated chamber 620 from a reservoir 610.
  • the side of the wail 630 opposite the regulated chamber 620 has channel wails extending along the wall from the valve inlet opening 632 and valve inlet opening to define respective inlet and outlet channels.
  • the inlet and outlet channels may be overlaid with an enclosure to separate gas therewithin from the reservoir 610.
  • wail comprises an annular mount having an inner annular portion 636 and an outer annular portion 638. Both inner and outer annular portions 636, 638 extend into the regulated chamber 820 along a valve axis A which is substantially normal to the wail 630.
  • the outer annular portion 638 extends axialiy beyond the inner annular portion and the flexible diaphragm when installed to provide a guide 840 for a locator collar as described above.
  • the mount blends with an adjacent wail 690 of the regulator unit (as best shown in Figure 7, described below).
  • the flexible diaphragm 650 of this example illustrates several optional features of the flexible diaphragm, when compared with the flexible diaphragm 150 described above with respect to Figures 1 , 2, and 4.
  • the flexible diaphragm may have a projecting peripheral rim 652 as described above to be received in the groove 639 of the wall 630 defined between the inner and outer annular portions 636, 638 of the mount.
  • the flexible diaphragm may have a groove 639 defined between the peripheral rim 652 and an inner projection 658 on the gas flow side of the diaphragm 650, which groove 639 may be to receive the inner annular portion 636 of the wail 630 by interference fit. This may improve the seal formed between the wall 630 and the diaphragm.
  • the flexible diaphragm may have a dished portion 660 on the actuation side, forming a concave profile with a focal point at the centre of the flexible diaphragm.
  • the dished portion may serve to locate an actuator, such as an actuation bail, in a central portion of the flexible diaphragm in use.
  • the flexible diaphragm may comprise an annular locating ridge 662 on the actuation side, to cooperate with an actuator such as an actuator bail.
  • the annular locating ridge 662 may be located in an intermediate radial portion of the flexible diaphragm 650 which is to deform in use when acted on by an actuator.
  • the flexible diaphragm 650 may comprise an annular peripheral ridge 664 at a peripheral region 652 of the flexible diaphragm which overlies the mount of the wall in use.
  • the peripheral region 652 may be to remain static in use as it is supported by the mount.
  • the annular peripheral ridge may be to direct a temporary manual compression force into the peripheral region 652 of the flexible diaphragm through the keeper during installation to air push-fitting of the co-operating formations of the diaphragm and the mount, which force may be subsequently withdrawn so that the keeper is moveable with respect to the diaphragm.
  • Figure 7 schematically shows the flexible diaphragm 650 and wails 630, 690 of the regulated chamber 620 as viewed along the valve axis A.
  • the dished region 660, locating ridge 662 and peripheral ridge 664 are substantially coaxial with the outer profile of the flexible diaphragm 650, and are located coaxially with respect to the guide wall 840.
  • the guide wall 640 blends at one side with a side wall 690 of the regulated chamber.
  • Example print fluids which may be contained in an example fluid container may include inks; print agents for additive manufacturing such as coalescing, fusing, or detailing agents.
  • the print fluid may be water.
  • Additive manufacturing techniques may generate a three- dimensional object through the solidification of a build material.
  • the build material may be powder-based and the properties of generated objects may depend on the type of build material and the type of solidification mechanism used, in a number of examples of such techniques including sintering techniques, build material is supplied in a layer-wise manner and the solidification method includes heating the layers of build material to cause melting in selected regions. In other techniques, chemical solidification methods may be used.
  • Additive manufacturing systems may generate objects based on structural design data. This may involve a designer generating a three- dimensional model of an object to be generated, for example using a computer aided design (CAD) application.
  • the model may define the solid portions of the object.
  • the model data can be processed to generate slices of parallel planes of the model. Each slice may define a portion of a respective layer of build material that is to be solidified or caused to coalesce by the additive manufacturing system.

Landscapes

  • Ink Jet (AREA)

Abstract

Récipient de fluide 100 utilisable avec un appareil d'impression comprenant une chambre régulée 120 pour contenir un fluide d'impression; une unité de régulation 122 et un actionneur 124 disposé à l'intérieur de la chambre régulée 120, l'unité de régulation 122 étant destinée à se déplacer entre une pluralité d'états d'extension pour entraîner l'actionneur 124; et une vanne de commande de gaz comprenant un diaphragme flexible 150 s'étendant sur une ouverture 132 dans une paroi 130 de la chambre régulée pour séparer le fluide d'impression provenant d'une voie d'écoulement de gaz 50 par l'ouverture 132; l'unité de régulation 122 étant destinée à entraîner l'actionneur 124 pour déformer le diaphragme flexible 150 entre une configuration ouverte dans laquelle la voie d'écoulement de gaz 50 est ouverte et une configuration dosée dans laquelle le diaphragme 150 créer une étanchéité contre l'ouverture 132 pour doser la voie d'écoulement de gaz; et il y a un ajustement serré entre des formations coopérantes du diaphragme flexible 150 et de la paroi 130 de la chambre régulée 120 pour retenir le diaphragme flexible 150 et maintenir un joint entre eux afin d'empêcher la migration de gaz dans la chambre régulée 120.
PCT/US2017/029084 2017-04-24 2017-04-24 Récipients de fluide WO2018199881A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/US2017/029084 WO2018199881A1 (fr) 2017-04-24 2017-04-24 Récipients de fluide

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/US2017/029084 WO2018199881A1 (fr) 2017-04-24 2017-04-24 Récipients de fluide

Publications (1)

Publication Number Publication Date
WO2018199881A1 true WO2018199881A1 (fr) 2018-11-01

Family

ID=58672723

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2017/029084 WO2018199881A1 (fr) 2017-04-24 2017-04-24 Récipients de fluide

Country Status (1)

Country Link
WO (1) WO2018199881A1 (fr)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20020044182A1 (en) * 2000-01-08 2002-04-18 I-Chung Hou Ink reservoir with a pressure adjusting device
EP1199178A1 (fr) * 2000-10-20 2002-04-24 Seiko Epson Corporation Cartouche d'encre pour dispositif d'enregistrement à jet d'encre
WO2012094012A1 (fr) * 2011-01-07 2012-07-12 Hewlett-Packard Development Company, L.P. Récipient de fluide à pluralité de chambres et de clapets
US20170087867A1 (en) * 2015-09-25 2017-03-30 Seiko Epson Corporation Liquid ejecting apparatus and pressure-regulating device

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20020044182A1 (en) * 2000-01-08 2002-04-18 I-Chung Hou Ink reservoir with a pressure adjusting device
EP1199178A1 (fr) * 2000-10-20 2002-04-24 Seiko Epson Corporation Cartouche d'encre pour dispositif d'enregistrement à jet d'encre
WO2012094012A1 (fr) * 2011-01-07 2012-07-12 Hewlett-Packard Development Company, L.P. Récipient de fluide à pluralité de chambres et de clapets
US20170087867A1 (en) * 2015-09-25 2017-03-30 Seiko Epson Corporation Liquid ejecting apparatus and pressure-regulating device

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