Patent application number | Description | Published |
20080309706 | LIQUID EJECTING APPARATUS - A liquid ejecting apparatus for ejecting liquid from an ejection head, the liquid being supplied from a liquid supplying source, the liquid ejecting apparatus comprising: a carriage having the ejection head including: a liquid channel configured for flowing the liquid from the liquid supplying source to the ejection head; a gas trap chamber which is formed in the midstream of the liquid channel and expands the width of the liquid channel; and a gas recovery chamber which is adjacent to the gas trap chamber and having a gas permeable wall between the gas recovery chamber and the gas trap chamber; a carriage driver which drives the carriage; an attachment/detachment connection which is detachably connected to the gas recovery chamber; and a depressurization unit which decreases a pressure of the gas recovery chamber to a pressure lower than that of the gas trap chamber via the attachment/detachment connection. | 12-18-2008 |
20090145299 | LIQUID SUPPLY APPARATUS AND LIQUID EJECTING APPARATUS - Provided is a liquid supply apparatus including: a liquid supply path which supplies a liquid from an upstream side, which is a liquid supply source, to a downstream side in which the liquid is consumed; a defoaming chamber which is provided in the liquid supply path and defoams air bubbles included in the liquid; and a depressurization chamber which is provided at a position adjacent to the defoaming chamber with a partition interposed therebetween and is depressurized such that the pressure thereof becomes lower than the pressure of the defoaming chamber, wherein the partition allows permeation of gas by the depressurization of the depressurization chamber and restricts permeation of the liquid, and wherein the partition is configured by a partition wall having rigidity. | 06-11-2009 |
20090147053 | LIQUID SUPPLY DEVICE AND LIQUID EJECTING APPARATUS - A liquid supply device includes a liquid supply channel that supplies a liquid from an upstream side as a liquid supply source side to a downstream side, where the liquid is consumed, and a pump that pumps a part of the liquid supply channel as a pump chamber. A first one-way valve in the liquid supply channel on an upstream side from the pump chamber permits ink to flow from the upstream side to the downstream side. A second one-way valve on a downstream side from the pump chamber permits ink to flow from the upstream side toward the downstream side. A liquid pressure accumulation unit with a volume variable pressure accumulation chamber is disposed on a downstream side from the second one-way valve to form a part of the liquid supply channel and stores the liquid in a pressure-accumulated state within the pressure accumulation chamber. | 06-11-2009 |
20090147054 | LIQUID SUPPLY DEVICE, LIQUID EJECTING APPARATUS, AND LIQUID SUPPLY METHOD - A liquid supply device includes a liquid supply channel that supplies a liquid from an upstream side as a liquid supply source side to a downstream side, on which the liquid is consumed, a first valve that is provided in the liquid supply channel to open and close the liquid supply channel, and a second valve that is provided on a downstream side from the first valve in the liquid supply channel to open and close the liquid supply channel. The first valve is closed when the second valve is open. | 06-11-2009 |
20090147060 | LIQUID SUPPLY APPARATUS AND LIQUID EJECTING APPARATUS - Provided is a liquid supply apparatus including: a liquid supply path which supplies a liquid from an upstream side, which is a liquid supply source, to a downstream side in which the liquid is consumed; a defoaming chamber which is provided in the liquid supply path and defoams air bubbles included in the liquid; and a depressurization chamber which is provided at a position adjacent to the defoaming chamber with a partition wall interposed therebetween and is depressurized such that the pressure thereof becomes lower than the pressure of the defoaming chamber, wherein the partition wall allows permeation of gas by the depressurization of the depressurization chamber and restricts permeation of the liquid, wherein the partition wall has rigidity, and wherein the defoaming chamber is arranged in plurality and at least two of the defoaming chambers overlap with one depressurization chamber in an upper and lower direction. | 06-11-2009 |
20090147064 | LIQUID SUPPLY APPARATUS AND LIQUID EJECTING APPARATUS - Provided is a liquid supply apparatus including a liquid supply path which supplies a liquid from an upstream side, which is a liquid supply source, to a downstream side in which the liquid is consumed; a defoaming chamber which is provided in the liquid supply path and defoams air bubbles included in the liquid; and a depressurization chamber which is provided at a position adjacent to the defoaming chamber with a partition wall interposed therebetween and is depressurized such that the pressure thereof becomes lower than the pressure of the defoaming chamber, wherein the partition wall allows permeation of gas by the depressurization of the depressurization chamber and restricts permeation of the liquid, and wherein an air bubble integrating portion which collects the air bubbles included in the liquid is provided in the defoaming chamber. | 06-11-2009 |
20090153628 | LIQUID SUPPLYING DEVICE AND LIQUID EJECTING APPARATUS - A liquid supplying device includes a liquid supplying flow path that supplies a liquid from an upstream side as a liquid supplying source side toward a downstream side on which the liquid is consumed, a pump that is driven for changing the volume of a pump chamber that is a part of the liquid supplying flow path, and a flow velocity reducing unit that reduces the flow velocity of the liquid passing through the liquid supplying flow path on the upstream side of the pump chamber by changing flow path resistance of the liquid supplying flow path in accordance with the speed of change of the volume of the pump chamber, in a case where the pump is driven for a suction operation that increases the volume of the pump chamber. | 06-18-2009 |
20090153629 | LIQUID SUPPLYING DEVICE AND LIQUID EJECTING APPARATUS - A liquid supplying device includes a liquid supplying flow path for supplying liquid from an upstream side toward a downstream side on which the liquid is consumed. A pump is driven for a pumping operation in accordance with displacement of a displacement member constituting a part of an inner wall of a pump chamber as a part of the liquid supplying flow path for changing the volume of the pump chamber. A detecting unit detects the remaining amount of the liquid of the liquid supplying source. The liquid supplying source is configured such that the volume of a liquid housing part as a closed space housing the liquid changes in accordance with the remaining amount of the liquid, and the detecting unit detects a liquid-end state in which the none of the liquid inside the liquid housing part remains based on the amount of displacement of the displacement member. | 06-18-2009 |
20090153630 | LIQUID SUPPLY DEVICE AND LIQUID EJECTING APPARATUS - A liquid supply device includes a liquid supply path for supplying liquid from an upstream side toward a downstream side where the liquid is consumed. A negative pressure chamber communicates with a decompression chamber through a communication hole and decompresses the decompression chamber. A communication hole valve body opens and closes the communication hole. A biasing member biases the valve body in a direction in which the valve body is always in a closed state. A flexible member forms a part of a wall surface of the negative pressure chamber and is displaced by a change in pressure within the negative pressure chamber. A communication hole valve body pressure member is displaced by the displacement of the flexible member to thereby press the valve body in a direction in which the valve body is in an open state against a biasing force of the biasing member. | 06-18-2009 |
20090160921 | LIQUID SUPPLY DEVICE AND LIQUID EJECTING APPARATUS - A liquid supply device includes a liquid supply path for supplying liquid from an upstream, liquid supply side toward a downstream side where the liquid is consumed. A defoaming chamber in the middle of the liquid supply path causes bubbles to escape from the liquid. A decompression chamber adjacent to the defoaming chamber has a partition wall interposed therebetween and is decompressed to have lower pressure than the defoaming chamber. The partition wall allows gas to permeate therethrough by decompression of the decompression chamber and regulates permeation of liquid. The partition wall is formed by a separate member from a decompression chamber forming member that forms the decompression chamber. The partition wall forms a part of an inner surface of the liquid supply path, and the liquid supply path passes along the inside of a wall portion of the decompression chamber in the decompression chamber forming member. | 06-25-2009 |
20090167795 | LIQUID SUPPLY UNIT, LIQUID EJECTING APPARATUS, AND LIQUID SUPPLYING METHOD - A liquid supply unit includes a liquid supply passage that supplies liquid from a liquid supply source on the upstream side to a liquid consuming section on the downstream side, a pump that operates using a part of the liquid supply passage as a pump chamber, and a control unit that determines the need for driving the pump after the consuming of liquid in the liquid consuming section and drives the pump on the basis of the determination. | 07-02-2009 |
20100020137 | LIQUID SUPPLY DEVICE AND LIQUID EJECTING APPARATUS - A liquid supply device includes: a supply pump which is provided in a liquid supply passage; a first unidirectional valve which is provided on an upstream side of the supply pump; a second unidirectional valve which is provided on a downstream side of the supply pump; a first member; a second member; and a flexible member. The supply pump and the first and second unidirectional valves are formed such that the flexible member is interposed between the first and second members and held by locking a locking unit in the state where the flexible member is interposed between the first and second members. | 01-28-2010 |
20100020138 | LIQUID SUPPLY DEVICE AND LIQUID EJECTING APPARATUS - A liquid supply device includes a supply pump in a liquid supply passage, a first unidirectional valve upstream from the supply pump and a second unidirectional valve downstream from the supply pump. Constituent members each include a single passage forming member provided with a part or the whole of the liquid supply passage. The constituent members are laminated and formed such that a partial passage of the liquid supply passage permitting the first unidirectional valve to communicate with the supply pump and a partial passage thereof permitting the supply pump to communicate with the second unidirectional valve are formed in the laminated state. The supply pump and the first and second unidirectional valves are disposed on the substantially same plane by laminating the constituent members. The first unidirectional valve communicates with the supply pump and the supply pump communicates with the second unidirectional valve by the partial passage. | 01-28-2010 |
20100020139 | LIQUID SUPPLY DEVICE, LIQUID EJECTING APPARATUS, AND LIQUID SUPPLYING METHOD - A liquid supply device includes a liquid supply passage which supplies a liquid from an upstream side on which the liquid is supplied from a liquid supply source to a downstream side on which the liquid is consumed. A pump is provided with a pump chamber in the liquid supply passage. A displacement member forms a part of a wall surface of the pump chamber and is displaceable to increase or decrease the volume of the pump chamber. An urging member urges the displacement member in a direction decreasing the volume of the pump chamber. A displacement mechanism displaces the displacement member in a direction increasing the volume of the pump chamber against an urging force of the urging member upon driving the displacement mechanism. Upon stopping the drive of the displacement mechanism, the pump chamber remains in a pressurized state by the urging force of the urging member. | 01-28-2010 |
20100020140 | LIQUID SUPPLY DEVICE AND LIQUID EJECTING APPARATUS - A liquid supply device includes a liquid supply passage which supplies a liquid from an upstream side where it is supplied from a liquid supply source to a downstream side where it is consumed. A passage forming member has a shape in which the liquid supply passage is formed. A flexible diaphragm forming member has a diaphragm forming part of a wall surface of a pump chamber in the liquid supply passage and is displaceable to change the volume of the pump chamber. A lamination structure is formed by laminating the diaphragm forming member and the passage forming member to form the pump chamber between facing surfaces thereof. A portion corresponding to the outer circumference of the diaphragm forming member has an outer circumference sealing portion preventing liquid, which has leaked from the liquid supply passage to a space between the facing surfaces, from flowing outside the lamination structure. | 01-28-2010 |
20100053258 | LIQUID TRANSPORTING METHOD AND METHOD OF CLEANING LIQUID EJECTING APPARATUS - Provided is a liquid transporting method in a liquid ejecting apparatus having a fluid ejecting head having a nozzle, a liquid storing unit connected through a flow passage to the fluid ejecting head, and a suction unit sucking an inner portion of the nozzle from a nozzle opening side, wherein a portion of the flow passage is used as a pump chamber, and a pump driven to change an internal volume of the pump chamber and an output valve opened only at the time when the output valve is pressed from the pump are provided, the liquid transporting method including: performing choke suction of charging the pump with the liquid, and performing a suction operation of sucking the inner portion of the nozzle by using the suction unit, and then, performing a transmission operation of pressing the liquid from the pump to the output valve. | 03-04-2010 |
20100238240 | LIQUID SUPPLY APPARATUS, LIQUID EJECTING APPARATUS - A liquid supply apparatus supplies liquid from a liquid container through a liquid supply path to a recording head. A liquid supply pump drives when a flexible member is displaced such that a volume of a pump chamber is increased or decreased while a part of the liquid supply path is set as the pump chamber. A negative pressure chamber is divided from the pump chamber by the flexible member. A first directional valve in the liquid supply path passes the liquid in one direction toward the supply pump from the liquid container. A second directional valve passes the liquid in one direction toward the liquid ejecting apparatus from the supply pump. A pressure adjustor between the first directional valve and the second directional valve increases a volume of the liquid container when a negative pressure larger than a predetermined pressure is applied to the negative pressure chamber. | 09-23-2010 |
20100245498 | FLUID SUPPLYING APPARATUS, FLUID EJECTING APPARATUS, AND FLUID SUPPLYING METHOD - A fluid supplying apparatus includes a fluid supplying passage through which fluid is supplied from a fluid supplying source, at an upstream side, toward a downstream side. A pump includes a pump chamber and a first displacement portion. A closing device closes the fluid supplying passage and includes a pressure chamber and a second displacement portion. The second displacement portion is displaced to increase or decrease capacity of the pressure chamber. The second displacement portion is displaced in a direction for decreasing the capacity of the pressure chamber in accordance with negative pressure that is applied from the downstream side of the fluid supplying passage to close the fluid supplying passage. A pressure reduction chamber is formed next to the pressure chamber and is partitioned from the pressure chamber. An opening device opens the fluid supplying passage and reduces internal pressure of the pressure reduction chamber. | 09-30-2010 |
20110199427 | LIQUID EJECTING APPARATUS - A liquid ejecting apparatus includes: a head portion which ejects liquid; a plurality of liquid reception portions which receive the liquid discharged from the head portion and in which flow-out ports of the liquid are provided on the bottoms; a suction pump which is connected to each of the flow-out ports of the plurality of the liquid reception portions and sucks the flow-out ports; and closure members each of which is provided in each of the plurality of liquid reception portions, is formed so as to float in the liquid, and closes each of the flow-out ports in a state where the liquid has flown out. | 08-18-2011 |
20110254895 | FLUID EJECTING APPARATUS - A fluid ejecting apparatus includes a fluid ejecting head and a fluid receiver. The fluid ejecting head has an ejection face in which a plurality of nozzles for ejecting fluid is formed. The ejection face is inclined with respect to a horizontal plane. The fluid receiver receives the fluid discharged from the fluid ejecting head. The fluid receiver includes a holding portion that holds an absorbing member. The absorbing member absorbs the fluid. A fluid reservoir is formed in the fluid receiver. The fluid reservoir can contain the fluid, thereby offering a fluid-retaining function that is different from the retention of the fluid due to absorption by the absorbing member. | 10-20-2011 |
20120038721 | LIQUID EJECTING APPARATUS - A liquid ejecting apparatus in which a pressure adjustment unit having a pressure adjustment valve is provided between a filter chamber that houses a filter and a recording head having nozzles through which ink is ejected, the opening size of filter hole is set to ½ of a minimum inner diameter Da of the nozzle of the recording head or lower, and a pressure for pumping ink with an air pump is adjusted to a value that permits air bubbles in the upstream side space to pass through the filter. | 02-16-2012 |
20130093820 | LIQUID SUPPLY APPARATUS AND LIQUID EJECTING APPARATUS - A liquid supply apparatus which supplies a liquid to a liquid ejecting head from a liquid accommodating unit includes a plurality of rotating type pumps which are respectively provided in the middle of each of a plurality of supply paths which connect a plurality of the liquid accommodating units and the liquid ejecting head, a common power source which drives the plurality of pumps and a power transmission adjusting unit which adjusts power which is transmitted from the power source to each pump due to the liquid pressure in the supply path on the basis of a load that the pump receives. | 04-18-2013 |