With Fluid Treatment (e.g., Filtering) Patents (Class 347/93)
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Patent number: 7824020Abstract: A liquid feed tube for feeding a liquid from a liquid tank disposed on a liquid jetting device body side to a jetting head mounted on a reciprocating carriage, including: a long elastic member and a film member connected in an airtight state to the elastic member along a longitudinal direction of the elastic member; and a space part formed by the elastic member and the film member and used as a liquid feed passage, wherein the elastic member is made of a specific resin composition. Thus, the bending rigidity of the liquid feed tube can be lowered, and the resistance to moisture permeability and the gas barrier property thereof can be realized at low cost.Type: GrantFiled: April 13, 2005Date of Patent: November 2, 2010Assignees: Bridgestone Corporation, Seiko Epson CorporationInventors: Youkou Saito, Tadashi Utsunomiya, Toshio Kumagai, Hitoshi Matsumoto, Masanori Takemura, Kazuyuki Saito, Yasushi Soya
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Publication number: 20100271448Abstract: The present invention is drawn to systems and methods for suppressing damaging effects from dissolution of silica present in an ink-jet printhead which contains high pH, pigmented ink. The systems and methods suppress the damaging effects of dissolution of silica by the action of a basic ink by adding a metal ion to the ink composition which forms a complex with the silica. The metal ion passivates the silica thus retarding the dissolution of silica thereby reducing promotion of ink kogation, silicate ring formation, and silicate deposit on ink-jet printhead resistors which effectively improves durability and shelf life of the ink-jet printhead.Type: ApplicationFiled: September 8, 2008Publication date: October 28, 2010Inventor: Shunqiong Yue
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Patent number: 7819514Abstract: A liquid ejecting apparatus includes a first flow path for supplying liquid, a second flow path that communicates with the first flow path, a filter disposed to face communication holes of the first and second flow paths, and an air bubble locking section that locks an air bubble in the communication hole of the second flow path at a time when the air bubble is discharged from the second flow path through the filter.Type: GrantFiled: May 23, 2007Date of Patent: October 26, 2010Assignee: Seiko Epson CorporationInventor: Haruhisa Uezawa
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Patent number: 7819510Abstract: An inkjet finger manifold is provided that includes a longitudinal manifold chamber with an entrance at a first end adjacent to a first longitudinal side. A purge vent is located at a second end on a second longitudinal side opposite the first longitudinal side. A first ramp is located at the first end sloping away from the entrance toward the second longitudinal side. A second ramp is located near the second end and slopes from the second longitudinal side toward the second end and the first longitudinal side to alter the laminar flow of the ink through the longitudinal manifold.Type: GrantFiled: November 30, 2005Date of Patent: October 26, 2010Assignee: Xerox CorporationInventors: James Dudley Padgett, Garry Adam Jones
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Publication number: 20100253755Abstract: A pigment dispersion containing a metal pigment, wherein the metal pigment contains plate-like particles, and in the case where the longitudinal diameter on the planar surface of the plate-like particle is X, the lateral diameter is Y, and the thickness is Z, the 50% average particle diameter R50 of a corresponding circle determined from the surface area in the X-Y plane of the plate-like particle is between 0.5 and 3 ?m, and the condition R50/Z>5 is satisfied.Type: ApplicationFiled: June 16, 2010Publication date: October 7, 2010Inventors: Takashi OYANAGI, Keitaro Nakano
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Patent number: 7806518Abstract: An inkjet recording head in which liquid supply flow paths formed in a first plate are defined by vertical walls and inclined walls. The vertical walls are perpendicular to surfaces of corresponding recording element substrates that contact the first plate. The inclined walls are inclined with respect to these surfaces. In the liquid supply flow paths that supply ink to ink supply ports of the recording element substrates arranged in one row, the inclined walls extend in a first direction along a direction of arrangement of the recording element substrates with respect to the vertical walls. In the liquid supply flow paths that supply the liquid to the liquid supply ports of the respective recording element substrates arranged in another row that is adjacent to the one row, the inclined walls extend in a second direction, which is opposite to the first direction, with respect to the vertical walls.Type: GrantFiled: April 30, 2008Date of Patent: October 5, 2010Assignee: Canon Kabushiki KaishaInventor: Katsumasa Nishikawa
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Publication number: 20100245507Abstract: In a method of manufacturing a liquid discharge head, the liquid discharge head has a flow-path unit having a liquid flow path, and a piezoelectric actuator unit. The liquid flow path has discharge openings and corresponding pressure chambers. The actuator unit has actuators which apply pressure to liquid in the pressure chambers. The method includes positioning the actuator unit to oppose the surface of the flow-path unit while extending on the plurality of pressure chambers, forming a particular film that is impermeable to the liquid on a supporting member. The particular film is secured to the surface of the flow-path unit by placing the supporting member on the flow-path unit, and aligning the supporting member such that a surface of the particular film opposes the surface of the flow-path unit while the openings of the plurality of pressure chambers are covered.Type: ApplicationFiled: March 29, 2010Publication date: September 30, 2010Applicant: BROTHER KOGYO KABUSHIKI KAISHAInventor: Yasunori KOBAYASHI
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Publication number: 20100245435Abstract: There is provided a liquid discharging apparatus including: a liquid discharging head; a cartridge attaching section in which a liquid cartridge is loaded detachably; a liquid channel; a filter provided in the middle of the liquid channel to capture a foreign substance in the liquid; a parameter deciding mechanism which, based on a cumulative use number of the liquid cartridge, decides a value of a predetermined parameter whose value becomes larger as the cumulative use number becomes larger; and a controller controlling the liquid discharging head so as to decrease an amount of the liquid discharged from the liquid discharging head per unit time as the value of the parameter becomes larger. This structure prevents the occurrence of a failure of the discharge of the liquid from nozzles.Type: ApplicationFiled: March 15, 2010Publication date: September 30, 2010Inventor: Hirotake NAKAMURA
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Publication number: 20100238243Abstract: An ink supply system for an ink jet printer has an ink circuit including a plurality of circuit components and fluid paths for conveying ink between components. A manifold defining the fluid paths and a plurality of ports in fluid communication with the paths. A filter module is provided adjacent to the manifold and comprises a housing that houses at least a first filter, the housing having an inlet and an outlet. The filter module is connected to the manifold such that at least one of the inlet or the outlet is in fluid communication with one of the plurality of ports on the manifold. The filter module may comprise an ink filter and a solvent filter. A second ink filter may be provided upstream of a pump. The modular nature of the filter makes for easy assembly, service and repair. It also provides for improved printer reliability.Type: ApplicationFiled: October 10, 2008Publication date: September 23, 2010Inventors: Matthew Tomlin, Ian Fost, Oliver Prime
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Publication number: 20100225718Abstract: A liquid supply apparatus includes a liquid supply passage that supplies liquid from an upstream liquid supply source side to a downstream side where the liquid is consumed and a filter chamber midway in the liquid supply passage. The filter chamber has a filter that catches air bubbles in the liquid. The liquid supply passage has a pressure chamber upstream of the filter chamber. The pressure chamber is defined by a first movable wall that moves upon receiving pressure in the pressure chamber and by a second movable wall. The second movable wall receives force from the first movable wall upon displacement thereof. The second movable wall displaces toward the side of reducing the volume of the filter chamber by the force transmitted by the first movable wall when the pressure chamber and the filter chamber are pressurized from upstream side of the pressure chamber.Type: ApplicationFiled: February 23, 2010Publication date: September 9, 2010Applicant: SEIKO EPSON CORPORATIONInventor: Haruhisa Uezawa
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Publication number: 20100225717Abstract: Provided is a printhead cartridge for a pagewidth printer. The cartridge has a cartridge body, a number of ink supply bags positioned inside the cartridge body, each ink supply bag having two panels sealed together to form a collapsible ink holding chamber, a printhead assembly in fluid communication with the ink supply bags, the printhead assembly having ink supply channels, a leaf spring for biasing said ink holding chamber to increase an internal volume of the ink holding chamber and, a connector assembly providing fluid communication between the chamber and the ink supply channels of the printhead assembly.Type: ApplicationFiled: May 23, 2010Publication date: September 9, 2010Inventors: Christopher Hibbard, Kia Silverbrook, Akira Nakazawa, Garry Raymond Jackson, John Douglas Peter Morgan
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Patent number: 7775652Abstract: A layered structure has a first metal plate having a first hole, a second metal plate having a second hole designed to communicate with the first hole, and a filter plate at least a surface of which is made of a metal. The filter plate is sandwiched between the first and second metal plates so that the first hole and the second hole communicate with each other through the filter. The first and second metal plates are bonded to each other by means of an adhesive that is disposed between the first and second metal plates. The adhesive is not opposed to the filter plate.Type: GrantFiled: December 18, 2006Date of Patent: August 17, 2010Assignee: Brother Kogyo Kabushiki KaishaInventors: Hiroshi Taira, Tatsuo Terakura
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Publication number: 20100201767Abstract: An inkjet printer comprises: (a) an inkjet printhead having an inlet channel and an outlet channel; (b) an ink reservoir; (c) an ink pressure regulator for regulating a hydrostatic pressure of ink supplied to the printhead; (d) a first ink line connecting the ink outlet and the inlet channel of the printhead; and (e) a second ink line connecting the outlet channel of the printhead and a return inlet of said ink reservoir, such that ink is supplied in a recirculating circuit. The ink pressure regulator comprises: an ink chamber having an ink outlet; an air inlet open to atmosphere; and an air channel connected to the air inlet. The air channel has a constriction defining a bubble outlet, which is configured as a slot. A width dimension of the slot is dimensioned to control a Laplace pressure of air bubbles drawn into the ink as result of supplying ink to the printhead, and thereby regulates a hydrostatic pressure of the ink.Type: ApplicationFiled: April 22, 2010Publication date: August 12, 2010Inventors: John Douglas Peter Morgan, Miao Wang, Patrick John McAuliffe, David John Worboys, Kia Silverbrook
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Patent number: 7758177Abstract: A filter for an inkjet printer that has a chamber divided into an upstream section and a downstream section by a filter membrane. An inlet conduit establishes fluid communication between an ink supply and the upstream section. An outlet conduit establishes fluid communication between the downstream section and a printhead. During use at least part of the inlet conduit is elevated relative to the filter membrane. By elevating the inlet conduit relative to the filter membrane, it acts as a bubble trap to retain bubbles that would otherwise obstruct the filter. This allows the filter size to be reduced for a more compact overall design.Type: GrantFiled: March 21, 2007Date of Patent: July 20, 2010Assignee: Silverbrook Research Pty LtdInventors: Brian Robert Brown, Norman Micheal Berry, Garry Raymond Jackson, Paul Timothy Sharp, John Douglas Peter Morgan, Kia Silverbrook, Akira Nakazawa, Michael John Hudson, Christopher Hibbard, Samuel George Mallinson, Paul Justin Reichl
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Patent number: 7753502Abstract: A method of manufacturing an ink jet head which discharges ink, comprising: a step of preparing a silicon substrate; a step of forming a membrane having a layer in which a plurality of holes are disposed to constitute a filter mask, and a layer with which a first surface is coated in such a manner that the first surface is not exposed from the plurality of holes on the first surface of the substrate; a step of forming a close contact enhancing layer on the membrane formed on the substrate; a step of forming a channel constituting member on the close contact enhancing layer to constitute a plurality of discharge ports and a plurality of ink channels communicating with the plurality of discharge ports; a step of forming an ink supply port communicating with the plurality of ink channels in the silicon substrate by anisotropic etching from a second surface facing the first surface of the substrate; and a step of forming a filter in a portion of the close contact enhancing layer positioned in an opening of the inType: GrantFiled: August 17, 2007Date of Patent: July 13, 2010Assignee: Canon Kabushiki KaishaInventors: Kenji Fujii, Shuji Koyama, Masaki Osumi, Shingo Nagata, Jun Yamamuro, Yoshinori Tagawa, Hiroyuki Murayama, Yoshinobu Urayama
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Patent number: 7753496Abstract: An inkjet printhead with multiple actuators in respective ink chambers, where a plurality of the actuators activate simultaneously from the same drive signal. By replacing a single relatively large chamber with two or more smaller chambers, such that the separate actuators are in the same driver circuit (either in series or parallel), each nozzle ejects drops of smaller volume, and having different misdirections. Smaller drops with differing misdirections are less likely to create any visible artefacts.Type: GrantFiled: October 11, 2005Date of Patent: July 13, 2010Assignee: Silverbrook Research Pty LtdInventor: Kia Silverbrook
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Patent number: 7753513Abstract: An ink-jet head comprises a passage unit with an ink passage formed therein and a branching passage unit, and is constructed by laminating the passage unit and the branching passage unit with each other. The ink passage extends from a common ink chamber for supplying ink to a pressure chamber toward a nozzle. The branching passage unit includes an ink branching passage for branching ink from an ink introduction port to ink outlet ports. The outlet ports leads out ink into the passage unit. Inlet ports for introducing ink into the common ink chamber are formed on a surface of the passage unit. Ink outlet ports in the branching passage unit are disposed so as to face the inlet ports. Filters for removing foreign matters mixed in ink are formed in the ink branching passage within the branching passage unit.Type: GrantFiled: December 15, 2005Date of Patent: July 13, 2010Assignee: Brother Kogyo Kabushiki KaishaInventor: Hiroshi Taira
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Patent number: 7748830Abstract: A printhead reservoir has an input ink port and a chamber to receive ink from an ink source through the input ink port. The reservoir also has a filter in a path between the input ink port and the chamber. A printhead includes a reservoir having an input ink port, a chamber to receive ink from an ink source through the input port and a filter in a path between the input port and the storage plate. The printhead also includes an array of jets to draw ink from the chamber and control circuitry to control the jets so as to selectively output ink through the jets onto a substrate. A reservoir has a filter to receive ink, a vented chamber to collect ink received from the filter and at least one jet to receive ink from the vented chamber. The vented chamber is between the ink filter and the fluid path to the jets in order to remove the filter portion of the pressure drop to the jets.Type: GrantFiled: November 27, 2006Date of Patent: July 6, 2010Assignee: Xerox CorporationInventors: David Paul Platt, David Roland Koehler, Terrance L. Stephens, James Dudley Padgett
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Patent number: 7744195Abstract: An inkjet printhead with planar thermal actuators, with contacts directly deposited onto the CMOS electrodes and suspended heater element, which avoids hotspots caused by vertical or inclined surfaces so that the contacts can be much smaller structures without acceptable increases in resistive losses. Low resistive losses preserves the efficient operation of a suspended heater element and the small contact size is convenient for close nozzle packing on the printhead.Type: GrantFiled: October 11, 2005Date of Patent: June 29, 2010Assignee: Silverbrook Research Pty LtdInventor: Kia Silverbrook
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Patent number: 7744767Abstract: A system for separating a mixture of two fluids of different specific gravities comprising: a first chamber having an inlet for receiving said mixture; a second chamber having a connection for receiving the fluid with the higher specific gravity of said mixture from said first chamber, said connection being situated between a portion of the two chambers below the inlet; and a waste outlet in said first chamber to drain residue situated at an interface between the two fluids.Type: GrantFiled: November 10, 2008Date of Patent: June 29, 2010Assignee: Hewlett-Packard Development Company, L.P.Inventor: Matt G. Driggers
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Publication number: 20100149293Abstract: A liquid ejection head includes ejection orifices allowing liquid to be ejected therethrough, passages communicating with the ejection orifices and the pressure chambers each accommodating an energy generating element generating energy for ejecting the liquid therein, a supply port supplying the liquid to the passages, and a filter including substantially cylindrical members between the supply port and passages and having openings. Each of the ejection orifices has a substantially circular cross section having larger and smaller diameters substantially perpendicularly to its liquid ejecting direction. Each of the openings has a substantially rectangular cross section having longer and shorter sides substantially perpendicularly to its liquid supplying direction. The relationships D1>L1, D1<D2, and D2>L2?D1 are satisfied where D1 is the smaller diameter, D2 is the larger diameter, L1 is the shorter side, and L2 is the longer side.Type: ApplicationFiled: December 11, 2009Publication date: June 17, 2010Applicant: CANON KABUSHIKI KAISHAInventors: Eisuke Nishitani, Toru Yamane, Tomoyuki Inoue, Ken Tsuchii
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Patent number: 7735987Abstract: A liquid-droplet ejecting apparatus including a liquid ejecting head having an ejection opening from which a droplet of a liquid is ejected, a first tank in which a liquid storing chamber storing the liquid to be supplied to the liquid ejecting head and a gas chamber storing a gas are formed, a second tank storing the liquid to be supplied to the liquid storing chamber, a gas-permeable film which closes a communication portion at which the gas chamber and liquid storing chamber communicate with each other, separates the gas chamber and liquid storing chamber from each other, and allows the gas to pass therethrough but does not allow the liquid to pass therethrough, a suction passage in communication with the gas chamber, a sucking device sucking the gas from the gas chamber through the suction passage, and a pressure control device disposed in the suction passage and communicating an internal space of the suction passage with an external space of the suction passage when an internal pressure of the suction paType: GrantFiled: May 28, 2008Date of Patent: June 15, 2010Assignee: Brother Kogyo Kabushiki KaishaInventor: Takaichiro Umeda
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Patent number: 7726788Abstract: A liquid ejecting head which is formed by joining a liquid introducing member for introducing liquid and a base body by welding includes an introduction hole which is formed in a front end of the liquid introducing member and an extending section which is tilted to extend from the exterior edge of an introduction hole to the inside of the introduction hole.Type: GrantFiled: May 24, 2007Date of Patent: June 1, 2010Assignee: Seiko Epson CorporationInventor: Fujio Akahane
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Patent number: 7722178Abstract: The passage unit is provided with a through hole that connects the ink ejection face and the support face. The ink supply block is provided with a through hole that connects the bond face and the ink inlet face. The filter film blocks communication between the through hole provided in the passage unit and the through hole provided in the ink supply block.Type: GrantFiled: March 28, 2007Date of Patent: May 25, 2010Assignee: Brother Kogyo Kabushiki KaishaInventors: Hiroshi Taira, Yoshirou Kita, Tadanobu Chikamoto
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Publication number: 20100123766Abstract: An ink priming system for a cartridge includes a priming inlet provided on a pagewidth printhead assembly, the priming inlet including a valve incorporating an elastomeric seal; an ink flow passage providing fluid connection between the pagewidth printhead assembly and an ink storage compartment of the cartridge, the ink flow passage terminating at the ink storage compartment to form an ink outlet; an ink filter provided across the ink outlet; a vent hole defined through a surface of the ink storage compartment, the vent hole being defined through a surface opposite the ink outlet; and an ink retaining member provided within the ink storage compartment for receiving and storing ink, the ink retaining member being interposed between the ink outlet and the vent hole. Ink is supplied to the priming inlet of the pagewidth printhead assembly to flow from the pagewidth printhead assembly into the ink storage compartment via the ink flow passage and across the ink filter.Type: ApplicationFiled: January 26, 2010Publication date: May 20, 2010Inventors: Kia Silverbrook, Akria Nakazawa, Christopher Hibbard, Paul Ian Mackey, Norman Micheal Berry, Garry Raymond Jackson
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Patent number: 7712884Abstract: An inkjet printhead with an array of nozzles and corresponding actuators for ejecting ink through the nozzles, the nozzles being arranged in rows such that the nozzle centres are collinear; wherein, the nozzle pitch along each row is greater than 1000 nozzles per inch. By configuring the components of the unit cell (the repeating chamber, nozzle and actuator unit) such that the overall width of the unit is reduced, the same number of nozzles can be arranged into a single row instead of two staggered and opposing rows without sacrificing any print resolution (d.p.i.). One row of drive circuitry simplifies the CMOS. fabrication and connection to a print engine controller for receiving print data. Alternatively, the unit cell configuration used in the present invention can be arranged into opposing rows that are staggered with respect to each other to effectively double the print resolution—in the case of the preferred embodiment, to 3200 d.p.i.Type: GrantFiled: October 11, 2005Date of Patent: May 11, 2010Assignee: Silverbrook Research Pty LtdInventor: Kia Silverbrook
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Patent number: 7712873Abstract: An inkjet head includes a flow path unit, an actuator unit, a flat flexile cable, a cover member and plural filters. The actuator unit is joined to an inflow-port face of the flow path unit. The reservoir unit supplies ink in an ink reservoir thereof into the flow path unit through the filters against which a region of the reservoir unit at least partially abuts. A side face of the reservoir unit defines a recess reaching the region of the reservoir unit between adjacent two filters. A sealant is applied to a gap between side faces of the two adjacent filters on the inflow-port face of the flow path unit and applied to the recess.Type: GrantFiled: March 30, 2009Date of Patent: May 11, 2010Assignee: Brother Kogyo Kabushiki KaishaInventor: Tadanobu Chikamoto
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Publication number: 20100110155Abstract: The invention relates to an ink supply system (2) for an inkjet printer (1) as well as a method of operating the ink supply system and an inkjet printer. The inkjet printer comprises a print head arrangement (6) incorporating several print heads (7) with one or more nozzles (8) for at least one color. The print heads (7) are connected via connecting lines (19) to a supply tank (187) connected via a filling line to an intermediate tank (12) with a conveyor means (16) and a filter arrangement (18) connected in between, and connected separately in each case via second connecting lines (21) to a common return tank (22). Means (32) are provided by means of which a pressure difference can be maintained in the supply tank (17) and/or in the return tank (22) as and when necessary to control a flow of ink from the supply tank (17) via the flow passages (20) of the print heads (7) connected in parallel to the return tank (22).Type: ApplicationFiled: October 30, 2009Publication date: May 6, 2010Inventor: Verner Delueg
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Patent number: 7709060Abstract: The present invention aims at making it possible to easily fill liquid into a droplet spraying and applying head module, while saving work. The droplet spraying and applying head module includes a droplet spraying and applying head and a tank. The droplet spraying and applying head includes a liquid chamber for containing liquid and a plurality of nozzles communicating with the liquid chamber, and sprays droplets through the nozzles The tank contains liquid to be supplied to the liquid chamber, and communicates with the liquid chamber. The droplet spraying and applying head and the tank are coupled to each other with a coupling member. A revolute joint is interposed between the coupling member and the droplet spraying and applying head.Type: GrantFiled: September 20, 2006Date of Patent: May 4, 2010Assignee: Kabushiki Kaisha ToshibaInventor: Shuichi Kimura
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Publication number: 20100097433Abstract: The present invention provides a liquid ejection head, a liquid supply apparatus, a liquid ejection apparatus, and a liquid supply method which enable the channel resistance and pressure loss of liquid in the liquid ejection head to be reduced to increase the speed at which liquid is supplied to the nozzles. To achieve this, an ink supply chamber (44) is placed so as to be laminated on a main ink supply chamber (42). A filter (40) interposed between the main ink supply chamber (42) and the ink supply chamber (44) extends along a surface substantially parallel to a nozzle arrangement plane on which a plurality of nozzles are arranged.Type: ApplicationFiled: December 23, 2009Publication date: April 22, 2010Applicant: CANON FINETECH INC.Inventors: Kayo Mukai, Tomohiro Fujii, Hiroyuki Ishinaga, Yoichi Sonobe
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Patent number: 7690777Abstract: The present invention provides a filter device including a supply channel where a liquid flows in; a first liquid chamber that is communicated with the supply channel; a second liquid chamber that is communicated with the first liquid chamber; a first discharge channel that is communicated with the second liquid chamber and that discharges the liquid; a first filter that is provided between the first liquid chamber and the second liquid chamber; and a second filter that is provided between the first liquid chamber and the second liquid chamber and whose lower end is positioned higher than a lower end of the first filter.Type: GrantFiled: November 21, 2006Date of Patent: April 6, 2010Assignee: Fuji Xerox Co., Ltd.Inventor: Tomohiro Wada
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Patent number: 7690769Abstract: A recording head for use in an inkjet recording device, the recording head including a cavity unit having a plurality of nozzles each of which ejects a droplet of an ink, a plurality of communication holes which communicate with the plurality of nozzles, respectively, and a common ink chamber which communicate with each of the communication holes and which temporarily stores the ink to be supplied to the each of the nozzles via a corresponding one of the communication holes. The cavity unit has at least one inner wall surface which defines the common ink chamber and has respective open ends of the communication holes. The at least one inner wall surface further has a plurality of grooves each of which is connected, at one end thereof, to the open end of a corresponding one of the communication holes.Type: GrantFiled: November 7, 2005Date of Patent: April 6, 2010Assignee: Brother Kogyo Kabushiki KaishaInventor: Naoki Katayama
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Publication number: 20100073446Abstract: A head for ejecting a liquid from ejection holes, including: a first flow-passage member in which are formed (a) a liquid-supply passage, (b) branch passages connected to the liquid-supply passage, and (c) discharge passages each being connected to any of the branch passages; a second flow-passage member in which are formed (a) at least one common passage each communicating with at least one of the branch passages and (b) individual passages having respective pressure chambers, each individual passage being connected to any one of the at least one common passage and introducing the liquid to a corresponding one of the ejection holes via a corresponding one of the pressure chambers; a first filter disposed in the liquid-supply passage; second filters disposed between the branch passages and the at least one common passage: and at least one energy giving member for giving ejection energy to the liquid in each pressure chamber.Type: ApplicationFiled: August 5, 2009Publication date: March 25, 2010Applicant: Brother Kogyo Kabushiki KaishaInventor: Yoichiro Shimizu
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Publication number: 20100053286Abstract: A liquid supply device includes: a de-foaming chamber for removing air bubbles mixed in liquid; a liquid flow path which supplies the liquid to the de-foaming chamber; a filter section provided in the liquid flow path and having an introduction portion for introducing the liquid and a discharge portion for discharging the liquid, where the discharge portion is disposed at a position with a height equal to or more than that of the introduction portion in the vertical direction; and a pressurizing section for supplying the pressurized liquid to the filter section.Type: ApplicationFiled: September 1, 2009Publication date: March 4, 2010Applicant: SEIKO EPSON CORPORATIONInventor: Hiroyuki ITO
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Patent number: 7661798Abstract: A liquid ejection head, a liquid supply apparatus, a liquid ejection apparatus, and a liquid supply method can enable the channel resistance and pressure loss of liquid in the liquid ejection head to be reduced to increase the speed at which liquid is supplied to the nozzles. To achieve this, an ink supply chamber is placed so as to be laminated on a main ink supply chamber. A filter interposed between the main ink supply chamber and the ink supply chamber extends along a surface substantially parallel to a nozzle arrangement plane on which a plurality of nozzles are arranged.Type: GrantFiled: November 16, 2006Date of Patent: February 16, 2010Assignee: Canon Finetech Inc.Inventors: Kayo Mukai, Tomohiro Fujii, Hiroyuki Ishinaga, Yoichi Sonobe
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Publication number: 20100025322Abstract: A method for assembling a micro-fluidic device better preserves the integrity of a filter in a filter layer and simplifies the bonding of the filter layer to the channel layers on each side of the filter layer. The method includes aligning a polymer layer having a plurality of filter elements and a plurality of fluid passages arranged between the filter elements between two substrates of a micro-fluidic device, and bonding the polymer layer between the two substrates to seal an area between the filter elements and the fluid passages to enable fluid flow through the filter elements to be segregated from fluid flow through the fluid passages.Type: ApplicationFiled: August 4, 2008Publication date: February 4, 2010Applicant: XEROX CORPORATIONInventors: John Richard Andrews, Terrance Lee Stephens
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Publication number: 20100007708Abstract: The actinic ray curable composition has a radically, photopolymerizable compound, and a non-reactive compound having a viscosity at 25° C. of from 0.1 to 20 mPa·s and a boiling point of not less than 150° C.Type: ApplicationFiled: September 18, 2009Publication date: January 14, 2010Applicant: Konica Minolta Medical & Graphic, Inc.Inventor: Wataru ISHIKAWA
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Publication number: 20090303303Abstract: An inkjet printer includes a print medium cartridge storing a print medium roll, the roll including a former carrying a wound length of a print medium; an inkjet printhead assembly including an inkjet printhead having a plurality of micro-electromechanical inkjet nozzles for printing onto the print medium; a print medium feed arrangement for feeding print medium from the roll to the inkjet printhead assembly; a baffle unit defining a plurality of ink channels through which ink is transported to the inkjet printhead, the baffle unit including a plurality of slats provided in each ink channel, the plurality of slats adapted to reduce an acceleration of ink within a respective ink channel; and an ink feeder received within the baffle unit, the ink feeder defining a plurality of passages each fed from a respective ink channel of the baffle unit, each passage arranged to feed a respective type of ink to the printhead.Type: ApplicationFiled: August 17, 2009Publication date: December 10, 2009Inventor: Kia Silverbrook
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Patent number: 7618137Abstract: An ink outlet and a pushing pin are formed on the bottom of a case of an ink cartridge. A fine-textured filter is put on inside of the ink outlet. A carriage is provided with an ink holding section at an upper end of an ink supply tube and a pressing section that is connected to the ink supply tube. As the ink cartridge is mounted on the carriage, a porous member of the ink holding section is pressed onto the filter, whereas the pushing pin pushes the pressing section to deform elastically. Then pressure inside the ink supply tube is raised to feed the ink reversely into the porous member, so the ink inside the ink supply tube is joined to the ink inside the case, reducing pressure loss through the filter.Type: GrantFiled: August 17, 2006Date of Patent: November 17, 2009Assignee: FUJIFILM CorporationInventor: Hiroshi Inoue
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Publication number: 20090278903Abstract: In one embodiment, a fluid ejector assembly includes: an inlet structure having an opening therein through which fluid may enter the assembly, the inlet structure having a rim generally defining an outer perimeter of the inlet structure around the opening; a conduit through which fluid may pass from the opening in the inlet structure to an ejector structure; and a filter supported on the inlet structure and spanning the opening such that fluid passing through the opening in the inlet structure to the conduit passes through the filter, a peripheral edge of the filter surrounded by the rim of the inlet structure and the peripheral edge of the filter encapsulated by the inlet structure.Type: ApplicationFiled: September 30, 2008Publication date: November 12, 2009Inventor: Marjan Amesbury
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Patent number: 7614733Abstract: A method of supplying liquid ink to a printhead assembly including a carrier, a printhead die mounted on the carrier, and a fluid delivery assembly communicated with the carrier includes communicating a fluid manifold of the carrier with the printhead die, communicating the fluid delivery assembly with the fluid manifold of the carrier, and filling the fluid delivery assembly with a quantity of the liquid ink, including purging air from the fluid delivery assembly through a filter, wherein the filter includes a frame having an opening and a fluid passage communicated with the opening formed therein, filter material enclosing the opening and the fluid passage of the frame, first and second fluid ports communicated with the fluid passage, and a permeable material communicated with the first fluid port.Type: GrantFiled: March 1, 2007Date of Patent: November 10, 2009Assignee: Hewlett-Packard Development Company, L.P.Inventors: Mark Haines, Mark A. Devries, Rhonda Wilson, Craig Malik
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Publication number: 20090267976Abstract: An inkjet image forming apparatus includes a print head, an ink tank to store ink, an ink feeding path to feed the ink from the ink tank to the print head, a filter disposed on the ink feeding path, and a press unit disposed on the ink feeding path between the filter and the print head, to press the ink present in the ink feeding path toward the ink tank. The press unit repeats a first operation to press the ink in the ink feeding path toward the ink tank, and a second operation to suck the ink in the ink feeding path.Type: ApplicationFiled: April 17, 2009Publication date: October 29, 2009Applicant: Samsung Electronics Co., LtdInventors: In Su Lee, Jin Ho Park, Sung Wook Kang
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Patent number: 7597435Abstract: An ink supply unit for use with a printhead, the ink supply unit including a plurality of ink storage chambers for supplying ink to the back surface of the printhead by way of an ink distribution molding. The molding includes a series of slots for supplying ink via respective ink outlets to the back of the printhead, and a filter configured to fit around the distribution molding 433 and further configured to filter ink passing through the molding.Type: GrantFiled: February 14, 2008Date of Patent: October 6, 2009Assignee: Silverbrook Research Pty LtdInventor: Kia Silverbrook
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Publication number: 20090244227Abstract: A fluid ejecting apparatus, contains: an ejecting head having a plurality of nozzles for ejecting a fluid and having a laminated structure in which a flow passage plate, in which a passage for the fluid is formed, is provided via an adhesive, in which the adhesive contains an adhesion resin, to which a lipophilic function agent that gives lipophilicity to the fluid is added in a proportion of from 0.25 wt % to 5.0 wt %.Type: ApplicationFiled: March 26, 2009Publication date: October 1, 2009Applicant: SEIKO EPSON CORPORATIONInventors: Koji Morikoshi, Takashi Akase, Yusuke Hirasawa
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Publication number: 20090244219Abstract: The present invention provides an ink cartridge including a cartridge body defining an air vent at an upper section thereof and an ink discharge port detachably assembled to a lower section of the cartridge body. The cartridge body and/or the ink discharge port can be replaced separately when they are damaged and, thus, there is no need to replace the ink cartridge as whole.Type: ApplicationFiled: May 16, 2006Publication date: October 1, 2009Inventor: Jiajin Liu
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Patent number: 7585063Abstract: There is provided a filter device having: a supply path into which liquid flows; a first liquid chamber communicating with the supply path; a second liquid chamber communicating with the first liquid chamber; a first discharge path which communicates with the second liquid chamber, and from which liquid is discharged; and a filter provided between the first liquid chamber and the second liquid chamber. An intermediate portion of the first discharge path between an entrance and an exit of the first discharge path is higher than the entrance and the exit, and the entrance of the first discharge path opens in a vicinity of a floor portion of the second liquid chamber.Type: GrantFiled: May 24, 2006Date of Patent: September 8, 2009Assignee: Fuji Xerox Co., Ltd.Inventor: Masakazu Okuda
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Patent number: 7585065Abstract: One embodiment of the invention relates to an ink-jet recording apparatus comprising an ink-jet head with an ink passage having an inner volume and a preservative in the ink passage in a preservative residual ratio of no greater than 10%. Another embodiment of the invention relates to a preservative having water, a penetrant, and a humectant. A further embodiment of the invention relates to a processing method involving filling an inner volume of an ink passage in an ink-jet recording apparatus with a preservative and removing a portion of the preservative from the inner volume such that a preservative residual ratio is no greater than 10%.Type: GrantFiled: September 26, 2006Date of Patent: September 8, 2009Assignee: Brother Kogyo Kabushiki KaishaInventor: Masashi Tsuda
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Patent number: 7585066Abstract: An ink supply unit is provided for a printer. The unit includes an elongate printhead configured to eject ink. An ink distribution manifold defines a printhead aperture in which the printhead is received and a series of slots through which ink can flow to the printhead. A filter can be fitted around the manifold to filter ink. A baffle unit is provided in which the ink distribution manifold and filter can be inserted. A housing is provided in which the baffle unit can be encased to form a plurality of respective ink chambers.Type: GrantFiled: July 29, 2007Date of Patent: September 8, 2009Assignee: Silverbrook Research Pty LtdInventor: Kia Silverbrook
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Patent number: 7585052Abstract: An inkjet print-head is formed by selectively disposing a first layer on a substrate. The first layer and the substrate form a topography. A second layer is selectively disposed over the substrate and the first layer. A third layer is disposed over the second layer. The second layer selectively disposed over the substrate and the first layer reduces a surface topography of the third layer.Type: GrantFiled: July 28, 2006Date of Patent: September 8, 2009Assignee: Hewlett-Packard Development Company, L.P.Inventors: Adrian Kriz, Bradley Chung
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Publication number: 20090219367Abstract: A liquid ejecting head includes a head body, a supply member having a first member, a second member, and a third member each having a liquid supply channel, the supply member including a first filter provided between the first member and the second member and a second filter provided between the second member and the third member; a first outer portion being provided between the first member and the second member, the first outer member being formed by integral molding for fixing the first member, the second member; a second outer portion being provided on the outer peripheries of the second member and the third member, the second outer portion being formed by integral molding for fixing the second member, the third member, and the second filter.Type: ApplicationFiled: February 27, 2009Publication date: September 3, 2009Applicant: SEIKO EPSON CORPORATIONInventors: Hiroshige OWAKI, Munehide KANAYA