WO2012075792A1 - Régulateur de pression pour cartouche d'encre et cartouche d'encre comprenant ce régulateur de pression - Google Patents

Régulateur de pression pour cartouche d'encre et cartouche d'encre comprenant ce régulateur de pression Download PDF

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Publication number
WO2012075792A1
WO2012075792A1 PCT/CN2011/075492 CN2011075492W WO2012075792A1 WO 2012075792 A1 WO2012075792 A1 WO 2012075792A1 CN 2011075492 W CN2011075492 W CN 2011075492W WO 2012075792 A1 WO2012075792 A1 WO 2012075792A1
Authority
WO
WIPO (PCT)
Prior art keywords
ink
valve
ink cartridge
pressure controller
chamber
Prior art date
Application number
PCT/CN2011/075492
Other languages
English (en)
Chinese (zh)
Inventor
钦雷
陈伟健
Original Assignee
珠海纳思达企业管理有限公司
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 珠海纳思达企业管理有限公司 filed Critical 珠海纳思达企业管理有限公司
Publication of WO2012075792A1 publication Critical patent/WO2012075792A1/fr

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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
    • B41J2/17556—Means for regulating the pressure in the cartridge

Definitions

  • the utility model relates to a pressure controller for an ink cartridge and an ink cartridge comprising the pressure controller.
  • An ink jet printer which is generally provided with an ink source provided by an ink cartridge for accommodating ink, transporting ink to a recording head via a corresponding ink flow path, and a nozzle for setting ink from the recording head driven by a printing signal It is ejected onto a recording medium such as paper to complete the description of characters or graphics.
  • the negative pressure inside the ink cartridge was controlled mainly by placing a sponge body in the ink storage chamber, but due to the large volume of the sponge body, occupying a large volume in the ink storage chamber, so that the storage The volume of the ink becomes smaller, and the capillary body itself causes the residual ink inside the ink cartridge to be more.
  • the valve mechanism is provided with a valve seat and a valve membrane (ie, a valve core), and the valve seat is provided with a plurality of valve holes, and the valve membrane covers the valve hole and can be based on the two
  • the pressure difference on the side approaches or leaves the valve hole, thereby closing or opening the ink flow path therein, so that the negative pressure inside the ink cartridge can be stably controlled, and the ink can be stably supplied to the ink discharge port.
  • the valve film closely matches the wall surface of the valve seat except the valve hole.
  • An object of the present invention is to provide a pressure controller for an ink cartridge to solve the technical problem that the pressure controller of the conventional ink cartridge cannot stably control the negative pressure inside the ink cartridge in the presence of an error.
  • the chamber component includes a valve mechanism that regulates pressure of the chamber component, the valve mechanism comprising:
  • valve seat having at least one valve bore
  • a spool that selectively closes or leaves the valve bore according to pressure changes on both sides thereof;
  • the ink outlet is provided at a position where the valve chamber is at the highest point in the gravity direction when the ink cartridge is used by the pressure controller.
  • the valve body includes a disk portion and a rod portion, wherein the rod portion is coupled to the disk portion, and the disk portion closes or deviates from the valve hole according to a pressure change on both sides thereof.
  • the pressure controller for the ink cartridge is a separate article.
  • the pressure controller for the ink cartridge is further provided with a flow inlet for guiding ink into the chamber member and a flow outlet for guiding ink into the chamber member.
  • the valve mechanism also includes a screen disposed on a flow path between the flow inlet and the valve mechanism.
  • the pressure controller for the ink cartridge is further provided with a first positioning mechanism in the insertion direction in which the ink cartridge is inserted, and a second positioning mechanism in a direction perpendicular to the insertion direction.
  • the first positioning mechanism is a wedge block
  • the second positioning mechanism is a hollow cylinder and a columnar portion disposed on the hollow cylinder.
  • the present invention also provides an ink cartridge detachably mounted in an inkjet printing apparatus, including an ink storage chamber for storing ink supplied to the inkjet printing device and for conveying ink in the ink storage chamber to the inkjet
  • an ink storage chamber for storing ink supplied to the inkjet printing device and for conveying ink in the ink storage chamber to the inkjet
  • the ink outlet of the printing device is characterized in that the ink cartridge is further provided with the pressure controller for the ink cartridge.
  • the ink outlet is disposed at the position of the highest point of the valve chamber in the gravity direction when the ink cartridge is used by the pressure controller.
  • the ink will inevitably fill the entire valve mechanism before it flows out, so that the surface tension of the water can be used to seal the gap between the valve core and the valve seat due to manufacturing errors, so that the two sides of the valve core are not connected and a pressure difference can be generated.
  • This ensures a stable control of the internal pressure of the cartridge and prevents ink leakage.
  • the existing pressure controller for the ink cartridge can not be manufactured in the presence of errors Stable technical problem of controlling the negative pressure inside the ink cartridge.
  • FIG. 1 is a schematic structural view of an ink cartridge according to an embodiment of the present invention.
  • FIG. 2a is a schematic exploded view of the ink cartridge according to an embodiment of the present invention.
  • Figure 2b is a schematic view of the cover
  • Figure 2c is a partial cross-sectional view of the ink cartridge
  • FIG. 3 is an exploded perspective view of a chamber component according to an embodiment of the present invention.
  • FIG. 4a and 4b are schematic structural views of a chamber component (removing a valve core) according to an embodiment of the present invention
  • FIG. 5 is a schematic structural view of a valve core according to an embodiment of the present invention
  • FIG. 6a is a schematic view showing the flow state of the ink when the valve mechanism is closed according to the embodiment of the present invention
  • FIG. 6b is a schematic view showing the flow state of the ink when the valve mechanism is opened according to the embodiment of the present invention
  • FIG. 7 is a schematic structural view of another ink cartridge of the present invention.
  • 1 cartridge, 2 cartridges, 3 covers, 4 ink reservoirs, 41 card slots, 5 ink outlets, 51 projections, 6 air inlets, 7 ink inlets, 8 chamber components, 81 ink inlets, 82 Ink outlet, 83 valve cavity, 84 seat, 841 valve bore, 842 through hole, 85 spool, 851 disc, 852 rod, 853 limit, 86 wedge block, 87 hollow cylinder, 88 column, 9 Chip, 10 handles, 101 claws, 11 recesses, 12 grips, 13 flow inlets, 14 flow outlets. detailed description
  • An inkjet printer cartridge 1 detachably mounted on a printer for supplying ink to a printhead of a printer to form an image or text on a recording medium.
  • 1 is a schematic structural view of an ink cartridge 1 in the present embodiment
  • FIG. 2 is a schematic exploded view of the ink cartridge 1 in the embodiment.
  • the ink cartridge 1 is composed of a casing 2 and a cover 3, wherein the casing 2 and the cover 3 are made of plastic, and the two are fixed by welding. Together, a closed chamber, i.e., an ink reservoir 4 for storing ink supplied to the printhead, is formed.
  • An ink outlet port 5 is further disposed on the bottom wall of the casing 2 to cooperate with the ink supply needle disposed on the print head to transport the ink stored in the ink storage chamber 4 to the print head, and the ink outlet port 5 is provided There is a self-closing seal (not shown) for sealing.
  • the self-closing sealing ring is made of an elastic material, such as silica gel, rubber, etc., and has a small hole having a diameter corresponding to the diameter of the ink supply needle on one end surface.
  • the ink supply needle is inserted from the small hole and passes through the sealing ring to capture the ink in the ink storage chamber 4; and when the ink cartridge 1 is taken out from the printer, in the elastic material Under the elastic action, the portion of the small hole that is passed by the ink supply needle is automatically closed to prevent the ink from leaking from the ink outlet port 5.
  • the surface cover 3 is further provided with an air guiding hole 6 and an ink filling port 7, both of which communicate with the ink storage chamber 4, wherein the ink filling port 7 is used for injecting ink into the ink storage chamber 4, and the rubber plug is used after the first ink filling.
  • the sealing member is sealed, and the air guiding hole 6 is used to replenish air to the inside of the ink cartridge 1 as the ink is consumed during printing of the ink cartridge 1, thereby maintaining the internal pressure balance of the ink cartridge 1.
  • the air guiding hole 6 is often sealed with a gas guiding film to prevent ink from leaking therefrom.
  • the ink cartridge 1 is further provided with a resettable chip 9, a handle 10 having a claw 101, and a recess 11 provided on the bottom wall of the ink cartridge 1 and away from the ink outlet 5 end.
  • the chip 9 stores various information related to the ink cartridge 1, such as the amount of ink, the type of ink, the date of manufacture, the manufacturer, etc., and can communicate with the printer to record the latest information of the ink cartridge 1 in real time;
  • the handle 10 When loaded on the printer, the handle 10 is elastically bent toward the side wall of the ink cartridge 1 such that the claw 101 thereon cooperates with the locking member on the printer, while the recess 11 cooperates with the positioning post on the printer. Thereby the ink cartridge 1 is fixed to the printer.
  • the ink cartridge 1 is further provided with a grip portion 12 for facilitating the user to grasp the ink cartridge 1, which is composed of a plurality of convex grooves provided on the surface of the ink cartridge 1 for increasing the distance between the user's hand and the surface of the ink cartridge 1. Friction to prevent the ink cartridge 1 from coming off.
  • the ink in the ink storage chamber 4 can be stably flowed to the printer, and the ink reservoir 4 is further provided with a pressure controller for the ink cartridge.
  • the pressure controller for the ink cartridge comprises: a cover member and a chamber member 8, wherein the cover member (not shown) may be a cover made of plastic or a film, preferably, in this embodiment The cover member is a film, and the film is covered and consolidated over the chamber member 8 such that a confined space is formed between the film and the chamber member 8.
  • the chamber member 8 includes: a flow inlet 13 for guiding the ink in the ink storage chamber 4 into the pressure controller for the ink cartridge, and the flow inlet 13 is disposed to be in contact with the ink reservoir 4 bottom of When connected, the small amount of ink in the ink storage chamber 4 can be completely discharged when the ink cartridge 1 is used later, so that the entire ink cartridge 1 can be utilized to the utmost extent, saving the user's use cost; the flow outlet 14 for storing ink The ink in the chamber 4 is used to discharge the ink cartridge with a pressure controller, the description of which is described later; the valve mechanism for adjusting the pressure inside the chamber member 8, which includes: a valve chamber 83, a valve seat 84, a valve core 85, Ink inlet 81 and ink outlet 82.
  • the center of the valve seat 84 is provided with a through hole 842 surrounded by a plurality of valve holes 841.
  • the valve core 85 is made of an elastic material, and includes a disk portion 851 and a rod portion 852, wherein the disk
  • the outer diameter of the portion 851 is larger than the outer diameters of the plurality of valve holes 841, that is, it can cover the valve hole 841, and the disk portion 851 can close or deviate from the valve hole 841 according to the pressure difference between the two sides to close or open the valve portion 841.
  • the ink flow passages on both sides, the diameter of the rod portion 852 is equivalent to the above-mentioned through hole 842, which corresponds to the engagement of the rod portion 852 with the through hole 842 to fix the disc portion 851 to the valve seat 84 to cover the valve hole 841.
  • an ink outlet 82 for discharging the ink flowing out from the valve mechanism to the outside as shown in FIG. 4b, when the pressure controller for the ink cartridge is inserted into the ink cartridge 1 and the ink cartridge 1 is started to be used, the ink outlet 82 is disposed in the gravity direction valve.
  • the ink outlet 82 is located above the highest point of the disk portion 851 in the direction of gravity, so that the ink must fill the entire valve cavity 83 before it can flow outward from the ink outlet 82.
  • the valve chamber 83 can be divided into an ink storage chamber side and an ink discharge port side, and both sides are covered or detached from the plurality of valve holes 841 by the disk portion 851. They are connected or disconnected from each other, that is, the disk portion 851 closes or opens the valve hole 841 under the pressure difference on both sides to open or connect the ink storage chamber side and the ink discharge port side.
  • the disk portion 851 is largely deformed, and the rod portion 852 is finally released from the through hole 842.
  • an annular restricting portion 853 is provided on the rod portion 852, and the diameter of the restricting portion 853 is larger than the diameter of the through hole 842, and therefore, the rod portion 852 is subjected to a pressure difference. After moving upward by a certain distance, the surface of the restricting portion 853 abuts against the wall surface around the through hole 842, and the rod portion 852 is restricted from continuing upward movement.
  • the distance between the restricting portion 853 and the disk portion 851 can be defined according to different conditions such as the pressure difference between the two sides, and is not within the scope of the present invention.
  • a filter screen is provided on the ink flow path between the ink inlet 82 and the valve chamber 83 for filtering impurities and bubbles of ink entering the chamber member 8 to prevent printing of impurities or bubbles to the printer via the ink.
  • the nozzle is clogged or the print is broken.
  • FIG. 6a and 6b are schematic diagrams showing the ink flow state of the pressure controller for the ink cartridge, that is, the valve mechanism A schematic diagram of the ink flow state between the ink storage chamber side and the ink outlet side.
  • the pressure between the ink storage chamber side and the ink outlet side of the valve mechanism 8 is balanced, and the disk portion 851 covers the plurality of valve holes 841 to close the two.
  • the ink flow path between the sides As shown in FIG.
  • the air guiding film above the air guiding hole 6 is torn, that is, the air guiding hole 6 communicates with the outside atmosphere, and at the same time, the ink near the ink outlet port 5 is consumed.
  • the valve hole 841 is deviated, that is, the flow passage between the ink storage chamber side and the ink discharge port side is communicated, and the ink flows from the ink storage chamber side to the ink discharge port side via the valve hole 842, and the ink is discharged from the ink discharge port side.
  • the outlet 82 is replenished to the ink outlet 5 and continues to be supplied to the printhead, and, at this time, the outside atmosphere is replenished into the ink storage chamber 4 to maintain the pressure in the ink storage chamber 4 within a constant range. This action is repeated until the ink consumption in the ink storage chamber 4 is completed.
  • the pressure controller using the above ink cartridge can control the stable ink replenishing amount, so that the pressure in the ink storage chamber 4 is relatively constant, and the ink can be continuously maintained during printing. Stable flow to the print head.
  • the ink cartridge 1 when the ink cartridge 1 is manufactured and not used, the entire ink cartridge 1 is filled with ink, and the valve chamber 83 is naturally filled with ink.
  • the ink cartridge 1 since the ink outlet 82 is disposed in the direction of gravity At the highest point of the cavity, that is, the ink outlet 82 is set higher than the highest point of the spool 85 at this time, the valve chamber 83 is always filled with ink regardless of the outward flow of the ink; that is, whether the ink cartridge 1 is used or When not in use, the ink will always fill the valve cavity 83 until the ink is consumed.
  • the gap can be sealed by the surface tension of the ink in the valve chamber 84 to make the ink storage chamber side and the ink outlet port.
  • the sides are separated from each other, and only when the pressure difference between the two reaches a predetermined value, they communicate with each other to cause the ink to flow.
  • the ink outlet 82 is placed at the highest point of the valve chamber in the direction of gravity to ensure that the ink is always filled with the entire valve mechanism, thereby ensuring normal valve operation and stably supplying ink to the print head.
  • the ink cartridge is assembled in the ink cartridge by the first positioning mechanism and the second positioning mechanism, wherein, as shown in FIG. 3, the first positioning mechanism is disposed in the insertion direction of the pressure controller for the ink cartridge to set the ink cartridge
  • the pressure controller is fixed in its insertion direction.
  • the first positioning mechanism is a wedge block 86 disposed on the side wall of the chamber member 8, and when the ink cartridge is inserted into the ink cartridge 1 by the pressure controller, the wedge block 86 is disposed in the ink storage chamber.
  • the card slot 41 on the ribs of 4 is matched to make the ink cartridge pressure
  • the controller is fixed in its insertion direction.
  • the second positioning mechanism is disposed in a direction perpendicular to the insertion direction of the pressure controller for the ink cartridge to fix the ink cartridge pressure controller in the vertical direction.
  • the second positioning mechanism is a hollow cylinder 87 that protrudes outwardly from the bottom wall of the chamber member 8, and a cylindrical portion 88 is disposed in the middle of the hollow cylinder 87, and the hollow cylinder 87 and the columnar shape The portion 88 cooperates with the protrusion 51 disposed above the ink outlet port 5 to fix the ink cartridge 1, wherein the outer diameter of the columnar portion 88 is equivalent to the inner diameter of the protrusion 51, and the outer diameter of the protrusion 51 is equivalent to the inner diameter of the cylinder 86.
  • the projection 51 is held between the cylinder 87 and the columnar portion 88, thereby stably fixing the ink cartridge with the pressure controller in its vertical direction.
  • the inner side surface of the hollow cylinder 87 is provided with a certain taper for guiding the above-mentioned projection 51 to cooperate with it, and has an effect of error absorption, that is, even if the above-mentioned projection 51 has manufacturing tolerances, it can be guided and loaded.
  • the insertion direction of the pressure controller for the ink cartridge is equivalent to the Z-axis, and the vertical direction is equivalent to the XY plane.
  • the pressure controller of the ink cartridge is fixed in both the Z-axis and the XY plane. , indicating that it does not move in the three directions of X, Y, and ,. Therefore, regardless of the welding method used for the case 2 and the cover 3, such as vibration welding, the vibration caused by the case does not cause the ink cartridge to be used.
  • the pressure controller is offset or displaced to ensure a good connection with the ink cartridge 1.
  • the flow outlet 14 of the chamber member 8 is disposed on the above-mentioned columnar portion 88, that is, the ink flowing out from the pressure controller for the ink cartridge can be conveyed to the ink outlet port 5 via the flow outlet 14, so that the arrangement can be simplified.
  • the pressure controller for the ink cartridge is separated from the ink cartridge 1, that is, the pressure controller for the ink cartridge is a separate component, which can be made into a universal standard member and detachably mounted on different types of ink cartridges.
  • Figure 7 is a schematic view showing the structure of the ink cartridge using the pressure controller for another type of ink cartridge.
  • the pressure controller for the above-mentioned split type ink cartridge can reduce the manufacturing cost, and even when the ink cartridge is recovered, even the ink cartridge is The exterior is damaged and it can be removed for recycling, which is good for environmental protection.
  • first positioning mechanism and the second positioning mechanism may also be protrusions or recesses provided on the side walls of the chamber member 8, respectively, and cooperate with relevant components disposed near the print head. Just fine.

Landscapes

  • Ink Jet (AREA)

Abstract

L'invention concerne un régulateur de pression pour une cartouche d'encre, qui est monté de manière amovible sur la cartouche d'encre (1), et comprend une partie couverture et une partie compartiment (8) qui forme un compartiment étanche avec la partie couverture, et un mécanisme de soupape pour réguler la pression dans le compartiment étanche. Le mécanisme de soupape comprend une chambre de soupape (83), une entrée d'encre (81) permettant l'entrée d'encre dans le mécanisme à soupape, un siège de soupape (84) comprenant au moins un orifice de soupape (841), et un élément soupape (85) fermant ou libérant sélectivement l'orifice de soupape en fonction de la variation de pression des deux côtés de celui-ci. La sortie d'encre est placée à un emplacement où se situe le point le plus haut du compartiment de soupape dans le sens de la pesanteur. On assure ainsi que l'encre ne s'écoule pas avant que l'ensemble du mécanisme de soupape ne soit rempli d'encre. Un interstice éventuel entre l'élément de soupape et le siège de soupape dû à une erreur de fabrication peut être obturé par la tension superficielle du liquide, qui supprime toute communication entre les deux faces de l'élément de soupape et crée une différence de pression entre elles. Ainsi, la pression interne de la cartouche d'encre est régulée de manière stable, et les fuites d'encre sont évitées.
PCT/CN2011/075492 2010-12-07 2011-06-09 Régulateur de pression pour cartouche d'encre et cartouche d'encre comprenant ce régulateur de pression WO2012075792A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201020645470.0 2010-12-07
CN2010206454700U CN201900799U (zh) 2010-12-07 2010-12-07 一种墨盒用压力控制器及包含该压力控制器的墨盒

Publications (1)

Publication Number Publication Date
WO2012075792A1 true WO2012075792A1 (fr) 2012-06-14

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PCT/CN2011/075492 WO2012075792A1 (fr) 2010-12-07 2011-06-09 Régulateur de pression pour cartouche d'encre et cartouche d'encre comprenant ce régulateur de pression

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CN (1) CN201900799U (fr)
WO (1) WO2012075792A1 (fr)

Cited By (1)

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Publication number Priority date Publication date Assignee Title
US20140198144A1 (en) * 2013-01-16 2014-07-17 Seiko Epson Corporation Backpressure control unit, liquid ejecting head, and liquid ejecting apparatus

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CN104669799B (zh) * 2015-02-13 2016-07-06 杭州万盟数码设备有限公司 大幅面打印机大容量排气墨囊
JP7147425B2 (ja) * 2018-09-27 2022-10-05 セイコーエプソン株式会社 流路部材、ヘッドユニット、および、ヘッドユニット群
CN115583107A (zh) * 2022-08-30 2023-01-10 珠海纳思达企业管理有限公司 一种再生墨盒及制造方法

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JP2004050698A (ja) * 2002-07-22 2004-02-19 Brother Ind Ltd インクカートリッジ及びその製造方法
EP1398156A2 (fr) * 2002-09-12 2004-03-17 Seiko Epson Corporation Cartouche d'encre procédé de régulation du débit d'un fluide
CN1605467A (zh) * 2001-05-17 2005-04-13 精工爱普生株式会社 墨盒及大气开启阀在墨盒中的装配方法
US20060098062A1 (en) * 1998-07-15 2006-05-11 Hisashi Miyazawa Ink-jet recording device and ink supply unit suitable for it
CN1789001A (zh) * 2004-11-18 2006-06-21 兄弟工业株式会社 用于墨盒的保护装置
CN101157304A (zh) * 2006-10-06 2008-04-09 兄弟工业株式会社 墨盒和供墨系统
WO2009116299A1 (fr) * 2008-03-21 2009-09-24 セイコーエプソン株式会社 Récipient pour fluides, et soupape à pression différentielle

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US20060098062A1 (en) * 1998-07-15 2006-05-11 Hisashi Miyazawa Ink-jet recording device and ink supply unit suitable for it
CN1309025A (zh) * 2000-02-16 2001-08-22 精工爱普生株式会社 喷墨打印机用墨盒和连接组件以及喷墨打印机
CN1605467A (zh) * 2001-05-17 2005-04-13 精工爱普生株式会社 墨盒及大气开启阀在墨盒中的装配方法
CN2543707Y (zh) * 2002-04-27 2003-04-09 珠海纳思达电子科技有限公司 带有省墨装置的打印机墨盒
JP2004050698A (ja) * 2002-07-22 2004-02-19 Brother Ind Ltd インクカートリッジ及びその製造方法
EP1398156A2 (fr) * 2002-09-12 2004-03-17 Seiko Epson Corporation Cartouche d'encre procédé de régulation du débit d'un fluide
CN1789001A (zh) * 2004-11-18 2006-06-21 兄弟工业株式会社 用于墨盒的保护装置
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WO2009116299A1 (fr) * 2008-03-21 2009-09-24 セイコーエプソン株式会社 Récipient pour fluides, et soupape à pression différentielle

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20140198144A1 (en) * 2013-01-16 2014-07-17 Seiko Epson Corporation Backpressure control unit, liquid ejecting head, and liquid ejecting apparatus
US9056477B2 (en) * 2013-01-16 2015-06-16 Seiko Epson Corporation Backpressure control unit, liquid ejecting head, and liquid ejecting apparatus

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