Patent application number | Description | Published |
20090040273 | LIQUID EJECTION HEAD - The present invention provides a print head that ejects ink supplied through an ink supply port so as to prevent the size of satellites from being reduced while inhibiting an increase in resistance to an ink flow. In the print head, ink supply ports are arranged on both sides of a plurality of channels. A predetermined number of ink supply ports are arranged at least one side of the ink channel all over the range of the arrangement of the channels. One side of each of the plurality of channels is connected via the common liquid chamber to the liquid supply port located so as to extend in a direction in which the channels are arranged. | 02-12-2009 |
20090231394 | LIQUID EJECTION RECORDING HEAD - A liquid ejection recording head includes an element substrate provided with a plurality of ejection energy generating elements for generating energy for ejecting liquid, an ejection outlet array comprising a plurality of ejection outlets for ejecting the liquid, and bubble generation chambers for generating bubbles by the ejection energy generating elements. The element substrate includes a first liquid supply port provided, by being penetrated through the element substrate, along an arrangement direction of the ejection outlets and includes a plurality of second ink supply ports disposed between a lateral end of the element substrate and the bubble generation chambers. Each of the bubble generation chambers communicates with the first liquid supply port through a first liquid supply passage and communicates with the second liquid supply ports through a second liquid supply passage. The element substrate has a thermal resistance against heat flowing from the ejection energy generating elements along a direction which is perpendicular to an ejection outlet array direction and which is in parallel to a surface of the element substrate on which the ejection energy generating elements are formed. The thermal resistance, per unit length with respect to the ejection outlet array direction, at both end portions of the ejection outlet array is larger than that at a central portion of the ejection outlet array. | 09-17-2009 |
20090273637 | LIQUID EJECTION HEAD - A print head that ejects ink supplied through an ink supply port can prevent the size of satellites from being reduced while inhibiting an increase in resistance to an ink flow. In the print head, ink supply ports are arranged on both sides of a plurality of channels. A predetermined number of ink supply ports are arranged at least at one side of the ink channel all over the range of the arrangement of the channels. One side of each of the plurality of channels is connected via the common liquid chamber to the liquid supply port located so as to extend in a direction in which the channels are arranged. | 11-05-2009 |
20090309928 | INK JET PRINT HEAD, AND METHOD OF MANUFACTURING INK JET PRINT HEAD - An object of the present invention is to provide an ink jet print head that prevents test terminals from coming into contact with ink or moisture and thus being corroded or damaging other circuits or wires. To accomplish the object, a nozzle forming member located in the vicinity of an area with the test terminals arranged therein is separated from a nozzle forming member located in the remaining area so as to have a reduced volume. | 12-17-2009 |
20100097418 | RECORDING HEAD AND RECORDING APPARATUS USING RECORDING HEAD - A recording head having a plurality of recording elements that are grouped into a plurality of blocks and ejecting ink by driving the recording elements in a time-divisional manner includes driving units configured to drive the recording elements, an input unit configured to receive an enable signal that defines a period during which the driving of the recording elements is enabled at one ink ejection, and a control unit configured to control the time-divisional driving by the driving units on the basis of pulses detected during the period defined by the enable signal received by the input unit. | 04-22-2010 |
20100123760 | LIQUID DISCHARGE HEAD AND LIQUID DISCHARGE METHOD - A liquid discharge head includes: a discharge port from which a liquid is discharged; a channel that communicates with the discharge port; and an energy generating element that is provided in the channel and generates energy used to discharge the liquid from the discharge port, wherein the channel includes a first inlet path supplying the liquid to the energy generating element; a second inlet path supplying the liquid to the energy generating element from a direction opposite to a direction in which the first inlet path supplies the liquid; and a outlet path allowing the liquid supplied to the energy generating element to run out. | 05-20-2010 |
20100149293 | LIQUID EJECTION HEAD - 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 D | 06-17-2010 |
20100208010 | LIQUID JET RECORDING HEAD AND LIQUID SUPPLY METHOD - A liquid jet recording head includes liquid discharge ports, pressure chambers, and a substrate which has the discharge energy generating element, a liquid chamber for storing a liquid supplied to the pressure chamber, a pair of paths which are separated from the liquid chamber, and a liquid supply port communicating with the liquid chamber. A liquid inlet port communicating with one path of the pair of paths and a liquid outlet port communicating with the other path of the pair of paths are opened on one surface of the substrate. A liquid flow path for discharging the liquid from the liquid chamber to the pressure chamber via the liquid supply port, and a liquid flow path for circulating the liquid from the one path to each pressure chamber via the liquid inlet port, and further from each pressure chamber to the other path via the liquid outlet port are provided. | 08-19-2010 |
20110141201 | LIQUID EJECTION HEAD - The present invention provides a print head that ejects ink supplied through an ink supply port so as to prevent the size of satellites from being reduced while inhibiting an increase in resistance to an ink flow. In the print head, ink supply ports are arranged on both sides of a plurality of channels. A predetermined number of ink supply ports are arranged at least one side of the ink channel all over the range of the arrangement of the channels. One side of each of the plurality of channels is connected via the common liquid chamber to the liquid supply port located so as to extend in a direction in which the channels are arranged. | 06-16-2011 |
20120019594 | LIQUID EJECTION HEAD - A liquid ejection head includes: a first and a second common liquid chamber formed in a substrate; a first nozzle array in which short and long nozzles are connected to the first common liquid chamber and alternately arranged on one side of the chamber; a second nozzle array in which short and long nozzles are connected to the first common liquid chamber and alternately arranged on the other side; a third nozzle array in which short and long nozzles are connected to the second common liquid chamber and alternately arranged on one side of the chamber; and a fourth nozzle array in which short and long nozzles are connected to the second common liquid chamber and alternately arranged on the other side; wherein the long and short nozzles formed on the one side and the long and short nozzles formed on the other side are disposed within a pitch P. | 01-26-2012 |
20120188310 | LIQUID DISCHARGE HEAD SUBSTRATE - In a liquid discharge head substrate having a connection line connected to a plurality of energy generating elements, and arranged between adjacent energy generating elements, a distance between the adjacent energy generating elements, between which the connection line is not arranged, is provided to be narrower than a distance of a portion where the connection line is provided. | 07-26-2012 |
20120200641 | LIQUID EJECTION HEAD AND LIQUID EJECTION METHOD - A liquid ejection head including an ejection orifice for ejecting a liquid; a flow path for supplying the liquid from a liquid supply port holding the liquid to the ejection orifice; and a heat generating element of a rectangular form with a long-side to short-side ratio of 2.5 or more for generating thermal energy used to eject the liquid, a longitudinal direction of the heat generating element being arranged along an extending direction of the flow path. An end portion of the heat generating element on a downstream side of a liquid flowing direction within the flow path is located between an end portion of the ejection orifice on the downstream side and an end portion of the ejection orifice on an upstream side when viewed from a direction to which the liquid is ejected from the ejection orifice. | 08-09-2012 |
20120247404 | STEAM GENERATOR - The steam generator includes: a water supply channel for supplying a secondary coolant to a tube bundle outer casing with the secondary coolant being isolated from the recirculating secondary coolant; a recirculating secondary coolant injection section for injecting the recirculating secondary coolant toward a high temperature-side heat transfer tube bundle; and a supplied secondary coolant injection section for injecting the secondary coolant supplied from the water supply channel toward a low temperature-side heat transfer tube bundle. The recirculating secondary coolant injection section and the supplied secondary coolant injection section being disposed in the tube bundle outer casing on the side toward the tube plate. The recirculating secondary coolant injection section and the supplied secondary coolant injection section are defined such that, of the secondary coolant and the recirculating secondary coolant, the coolant having a higher relative flow rate than the other flows at a lower velocity. | 10-04-2012 |
20130057609 | RECORDING HEAD AND RECORDING APPARATUS USING RECORDING HEAD - A recording head having a plurality of recording elements that are grouped into a plurality of blocks and ejecting ink by driving the recording elements in a time-divisional manner includes driving units configured to drive the recording elements, an input unit configured to receive an enable signal that defines a period during which the driving of the recording elements is enabled at one ink ejection, and a control unit configured to control the time-divisional driving by the driving units on the basis of pulses detected during the period defined by the enable signal received by the input unit. | 03-07-2013 |
20130316191 | WELDING STRUCTURE AND WELDING METHOD - A welding structure ( | 11-28-2013 |