| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 347094000 | With means to reduce vibration in the fluid (damping) | 29 |
| 20080204534 | Fluid path unit for fluid ejection device - A fluid path unit for a fluid ejection device, includes: first pressure chambers arrayed in a first pressure chamber row; second pressure chambers arrayed in a second pressure chamber row adjacent to the first pressure chamber row; first outlet paths, through which the first pressure chambers respectively communicate with first nozzles, the first outlet paths arrayed in a first outlet path row; second outlet paths, through which the second pressure chambers respectively communicate with second nozzles, the second outlet paths arrayed in a second outlet path row; a common fluid reservoir; and first connection paths, though which the first pressure chambers communicate with the common fluid reservoir. Each of the first connection paths extends across the second outlet path row. | 08-28-2008 |
| 20080239041 | LIQUID SUPPLY APPARATUS AND LIQUID DISHARGE APPARATUS - Inks are supplied from ink inflow flow passages to ink storage chambers in a subtank. The inks are further supplied from the ink storage chambers via ink outflow flow passages to a head. The ink storage chambers are stacked in the vertical direction, with upper surfaces or lower surfaces thereof being defined by damper films respectively. Parts of upper surfaces of the ink inflow flow passages and parts of upper surfaces of the ink outflow flow passages are defined by gas-permeating films. The gas, which is contained in the liquids in the ink inflow flow passages and the ink outflow flow passages, is discharged via the gas-permeating film to a gas discharge passage. The gas is prevented from the outflow together with the liquids from the liquid supply apparatus. | 10-02-2008 |
| 20090085994 | LIQUID DISCHARGING APPARATUS - The image forming apparatus includes a liquid discharging head that discharges a liquid; and a damper chamber that is provided in a liquid supply flow channel, the damper chamber being an internal space that is formed by bonding a flexible member to a base member, wherein the flexible member has a bonding surface that is bonded to the base member, an opening that is formed in the bonding surface, and a swollen portion that is three-dimensionally swollen from the edge of the opening to form the damper chamber, the base member has a communicating port, through which the damper chamber and the liquid supply flow channel communicate with each other, in a state where the base member is bonded to the bonding surface of the flexible member and closes the opening, and the flexible member is disposed such that the swollen portion is swollen in a gravity direction. | 04-02-2009 |
| 20090085995 | Inkjet Printer With Elongate Array Of Nozzles And Distributed Pulse Dampers - An inkjet printer that has an elongate array of nozzles for ejecting ink and ink conduits for supplying the array of nozzles with ink. The ink conduits are aligned with the longitudinal extent of the elongate array and have a plurality of pulse dampers individually in fluid communication with the ink conduits. Each pulse damper contains a volume of gas for compression by pressure pulses in the ink conduits, distributed along the length of the elongate array. A pressure pulse moving through an elongate printheads, such as a pagewidth printhead, can be damped at any point in the ink flow line. However, the pulse will cause nozzle flooding as it passes the nozzles in the printhead integrated circuit, regardless of whether it is subsequently dissipated at the damper. By incorporating a number of pulse dampers into the ink supply conduits immediately next to the nozzle array, any pressure spikes are damped at the site where they would otherwise cause detrimental flooding. | 04-02-2009 |
| 20090102907 | Image forming apparatus - An image forming apparatus is disclosed that includes a liquid discharger including a liquid discharge head configured to discharge a droplet of liquid so as to form an image. The liquid discharge head includes multiple individual channels communicating with corresponding nozzles from which the liquid is discharged; a common channel configured to supply the liquid to the individual channels; a deformable member configured to form at least one wall face of the common channel; and a vibration damping member formed of a viscoelastic material, the vibration member being provided in contact with the deformable member. | 04-23-2009 |
| 20090141108 | PRINTER WITH MINIMAL DISTANCE BETWEEN PRESSURE-DAMPENING STRUCTURES AND NOZZLES - An inkjet printer is provided. The printer comprises an inkjet printhead having a plurality of nozzles; at least one ink reservoir; and an ink supply system for supplying ink from the reservoir to the plurality of nozzles, the ink supply system comprising at least one pressure-dampening structure for dampening pressure fluctuations experienced by the nozzles. A distance between the pressure-dampening structures and at least one of the nozzles is less than 100 microns. | 06-04-2009 |
| 20090141109 | PRINTHEAD WITH PRESSURE-DAMPENING STRUCTURES - An inkjet printhead is provided. The printhead comprises a plurality of nozzle assemblies; a nozzle plate covering the plurality of nozzle assemblies; an ink supply system for supplying ink to the plurality of nozzle assemblies, the ink supply system comprising at least one conduit wall defined by part of the nozzle plate; and at least one pressure-dampening structure positioned in the part of the nozzle plate. The pressure-dampening structures dampen ink pressure fluctuations in the ink supply system. | 06-04-2009 |
| 20090219368 | PRINTER WITH INK LINE DAMPENING OF INK PRESSURE SURGES - A printer comprising: a printhead having an ink inlet and an ink outlet; an ink chamber for supplying ink to the printhead; an upstream ink line interconnecting an outlet port of the ink chamber and the ink inlet; a downstream ink line connected to the ink outlet; and a first air accumulator communicating with the downstream ink line. The first air accumulator is configured for dampening ink pressure pulses in the printhead during printing. | 09-03-2009 |
| 20090244228 | LIQUID DISCHARGING HEAD AND METHOD FOR MANUFACTURING THE SAME - A liquid discharging head is provided. The liquid discharging head has a flow path unit in which a common liquid flow path for supplying liquid to a nozzle which discharges liquid is formed by a plurality of plates being stacked together, the plurality of plates including a damper plate of which one surface defines at least a part of a wall surface of the common liquid flow path and an area on an other surface which is opposed to the common liquid flow path across the damper plate is not in contact with the plurality of plates other than the damper plate, wherein compression stress along the wall surface is applied to a portion of the damper plate which configure a wall of the common liquid flow path. | 10-01-2009 |
| 20100045758 | LIQUID JET HEAD - A liquid jet head and apparatus prevent an increase in the viscosity of liquid in the liquid path during long term storage. The recording head has a liquid path unit | 02-25-2010 |
| 20100103234 | PULSE DAMPED INK SUPPLY ARCHITECTURE - An inkjet printer includes a printhead integrated circuit (IC) with an array of nozzles for ejecting ink on to print media; an ink supply reservoir for storing ink, the ink supply reservoir having rigid walls and an air inlet for supplying air into the ink supply reservoir; an ink supply line defining a flow path from the ink supply reservoir to the printhead IC; and a pulse damper positioned along the flow path, the pulse damper for decreasing an amplitude of pressure pulses in the ink. The pulse damper is a compliant section of the ink supply line adapted to elastically flex. | 04-29-2010 |
| 20100123767 | DAMPER DEVICE, DAMPER UNIT, LIQUID JETTING APPARATUS, AND METHOD OF MANUFACTURING DAMPER DEVICE - A damper device includes a storage chamber storing a liquid, and formed: of a substrate; a pair of supporting portions which are arranged to face each other in a predetermined facing direction, which project from the substrate, and peripheral portions of which have shapes substantially same with each other; and a film which is flexible and which has a sheet shape. The film is connected to the peripheral portions of the pair of supporting portions, and the storage chamber is formed as a space having a curved surface defined by the film. Accordingly, there is provided a damper device which is capable of stably exhibiting high damper performance, and in which the layout of channels which are connected to the damper device is simple. | 05-20-2010 |
| 20100149294 | INKJET PRINTER WITH ELONGATE NOZZLE ARRAY SUPPLIED THROUGH PULSE DAMPED CONDUITS - An inkjet printer that has an elongate array of nozzles for ejecting ink, a plurality of ejection actuators, each configured to eject ink through one of the nozzles respectively, a plurality of ink conduits aligned with a longitudinal extent of the elongate array of nozzles, the ink conduits extending adjacent the elongate array for supplying the array of nozzles with ink and, a plurality of pulse dampers positioned along each of the ink conduits, each pulse damper being individually in fluid communication with one of the ink conduits and each containing a volume of gas for compression by pressure pulses in the ink conduits. A pressure pulse moving through an elongate printheads, such as a pagewidth printhead, can be damped at any point in the ink flow line. However, the pulse will cause nozzle flooding as it passes the nozzles in the printhead integrated circuit, regardless of whether it is subsequently dissipated at the damper. By incorporating a number of pulse dampers into the ink supply conduits immediately next to the nozzle array, any pressure spikes are damped at the site where they would otherwise cause detrimental flooding. | 06-17-2010 |
| 20100182388 | INK-JET HEAD - An ink-jet head is disclosed. The ink-jet head can include: a chamber for holding ink, an actuator coupled to one side of the chamber to provide pressure to the chamber, a damper portion connected with the other side of the chamber, an accelerator portion extending from a lateral surface of the damper portion, and a nozzle formed at an end of the accelerator portion. Certain embodiments of the invention can be used to increase the speed at which ink is ejected and improve the straightness of the ejection path. | 07-22-2010 |
| 20100214384 | DAMPER, HEAD UNIT, LIQUID JETTING APPARATUS, AND AIR-DISCHARGE METHOD OF DAMPER - A damper includes a reservoir which stores a liquid and damps a pressure fluctuation in the liquid and includes a gas-liquid separation membrane which demarcates an upper portion of the reservoir, and a flexible damper film which demarcates the reservoir at a lower side of the gas-liquid separation membrane. Accordingly, there is provided a damper which is capable of improving an air-discharge efficiency while suppressing an increase in the size, and moreover improving a pressure relaxation efficiency. | 08-26-2010 |
| 20110025794 | Inkjet head and inkjet head assembly - There is provided an inkjet head including an inkjet head plate slantedly coupled to a cartridge supplying ink; a nozzle ejecting ink moving through a path formed inside the inkjet head plate, and formed at a flattened edge of the inkjet head plate contacting a printing medium; and an actuator provided on a surface of the inkjet head plate opposite to that coupled to the cartridge and controlling the ejection of the ink. | 02-03-2011 |
| 20110181674 | Inkjet print head - There is provided an inkjet print head including: a reservoir storing a first ink drawn in through an ink inlet; a pressure chamber storing the first ink drawn in from the reservoir and transferring the first ink to a nozzle by a driving force of an actuator; and a damper disposed between the pressure chamber and the nozzle and allowing the first ink to be mixed with a second ink drawn through an ink flow path for the second ink. | 07-28-2011 |
| 20110242240 | LIQUID JET HEAD - A liquid jet apparatus is provided. The liquid jet apparatus includes a nozzle plate which has a nozzle opening communicating with a pressure generation chamber; a flow channel substrate which has a liquid reservoir supplying a liquid to a plurality of pressure generation chambers; and a seal plate which covers at least a part of the liquid reservoir and which has a first damper chamber and second damper chamber. The seal plate has a connection cavity which connects the first damper chamber with the second damper chamber, and the connection cavity is connected to a release path communicating with the air. | 10-06-2011 |
| 20110304679 | INKJET PRINTHEAD HAVING MULTIPLE PRESSURE-DAMPENING STRUCTURES DEFINED IN NOZZLE PLATE - An inkjet printhead includes: a nozzle plate having a plurality of nozzle apertures and ink supply conduits for supplying ink to the nozzle apertures. Each of the ink supply conduits has a conduit wall defined by part of the nozzle plate. Each of the conduit walls includes a plurality of pressure-dampening structures for dampening pressure fluctuations experienced at the nozzle apertures. | 12-15-2011 |
| 20120140006 | DAMPING DEVICE, LIQUID SUPPLYING APPARATUS, AND DROPLET DISCHARGING APPARATUS - A damping device includes an elastic membrane that serves as a wall of a part of a supply channel between a reservoir unit that contains liquid and a droplet discharging unit that discharges the liquid in the form of a droplet; a wall portion provided outside of the supply channel such that a gas chamber is provided between the wall portion and the elastic membrane; and a resistance unit provided on the wall portion, the resistance unit providing ventilation and generating a resistance force against a movement of the elastic membrane. | 06-07-2012 |
| 20120218358 | LIQUID JET HEAD - A liquid jet apparatus is provided. The liquid jet apparatus includes a first damper chamber and a second damper chamber, a release path operatively associated with both the first damper chamber and the second damper chamber, and a control path connecting the first damper chamber, the second damper chamber, and the release path to each other. | 08-30-2012 |
| 20120306975 | DAMPER APPARATUS, DAMPER TUBE ASSEMBLY, AND INK JET PRINTER - The invention provides a damper apparatus including a housing having a valve chamber and reciprocally moving integrally with a carriage, an inlet port communicating an ink flow channel on the upstream side and the valve chamber, an outlet port communicating the ink flow channel on the downstream side and the valve chamber, and a spherical valve body stored so as to be movable in the valve chamber, wherein the valve body moves relatively to a position for closing the inlet port or the outlet port upon reception of the inertial force in association with the acceleration and deceleration to close the ink flow channel when the carriage is accelerated or decelerated, and the valve body moves relatively to a position for opening the inlet port and the outlet port under its own weight to open the ink flow channel when the carriage is not accelerated and decelerated. | 12-06-2012 |
| 20130162738 | LIQUID JET HEAD - A liquid jet apparatus is provided. The liquid jet apparatus includes a first damper chamber and a second damper chamber, a release path operatively associated with both the first damper chamber and the second damper chamber, and a control path connecting the first damper chamber, the second damper chamber, and the release path to each other. | 06-27-2013 |
| 20140085388 | LIQUID JET HEAD - A liquid jet apparatus is provided. The liquid jet apparatus includes a first damper chamber and a second damper chamber, a release path operatively associated with both the first damper chamber and the second damper chamber, and a control path connecting the first damper chamber, the second damper chamber, and the release path to each other. | 03-27-2014 |
| 20140168329 | SYSTEMS AND METHODS FOR INK-BASED DIGITAL PRINTING - An ink-based digital printing system for variable data lithographic printing includes an imaging member and a dampening fluid/carrier patterning system. An inkjet-type device of the patterning system jets material onto an imaging member. The as-jetted material includes dampening fluid and carrier component such as a wax jetted in a single phase. Upon contact with a surface of an imaging member, the jetted material cools and phase separation occurs, the dampening fluid leaching to a surface of the solid component on the imaging member surface, dampening the solid component, which forms an image according to image data input to the patterning system. | 06-19-2014 |
| 20140232796 | LIQUID EJECTION HEAD AND IMAGE FORMING APPARATUS INCLUDING SAME - A liquid ejection head includes a nozzle plate, a channel plate, a common-liquid-chamber member, and a deformable damper area. The nozzle plate includes plural nozzles to eject droplets of liquid. The channel plate includes individual liquid chambers communicated with the nozzles. The common-liquid-chamber member includes a common liquid chamber to supply the liquid to the individual liquid chambers. The deformable damper area forms a wall face of the common liquid chamber. The channel plate has an end in a direction perpendicular to a nozzle array direction in which the nozzles are arrayed. The end is opposed to a portion of the damper area and has a relief at a side facing the damper area to permit deformation of the damper area. | 08-21-2014 |
| 20140307035 | PRINTHEAD INCLUDING ACOUSTIC DAMPENING STRUCTURE - A printhead includes a nozzle plate including a plurality of nozzles and a plurality of liquid chambers. Each liquid chamber is in fluid communication with a respective one of the plurality of nozzles. An acoustic dampening structure includes a plurality of sets of air pockets and liquid flow restrictors. Each liquid chamber is in fluid communication with one of the sets of air pockets and liquid flow restrictors. A common liquid supply manifold is in fluid communication with each liquid chamber through the liquid flow restrictor associated with the liquid chamber. | 10-16-2014 |
| 20140307036 | PRINTHEAD INCLUDING ACOUSTIC DAMPENING STRUCTURE - A printhead includes a plurality of liquid channels and a nozzle plate. The nozzle plate includes a plurality of nozzles and an acoustic dampening structure. The acoustic dampening structure includes a plurality of sets of air pockets and liquid flow restrictors. Each set of air pockets and liquid flow restrictors is in fluid communication with a respective one of the plurality of nozzles. Each liquid channel is in fluid communication with the respective one of the plurality of nozzles through the associated liquid flow restrictor. A common liquid supply manifold is in fluid communication with the plurality of liquid chambers. | 10-16-2014 |
| 20150029276 | LIQUID JET HEAD - A liquid jet apparatus is provided. The liquid jet apparatus includes a first damper chamber and a second damper chamber, a release path operatively associated with both the first damper chamber and the second damper chamber, and a control path connecting the first damper chamber, the second damper chamber, and the release path to each other. | 01-29-2015 |
