| 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 |
| 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 |
| 20100201744 | INKJET RECORDING HEAD - A liquid jet recording head includes a substrate including a plurality of discharge energy generating elements, and a plurality of ink supply ports positioned along an array direction of the plurality of discharge energy generating elements and separated from each other by beams, a plurality of ribs supported by the beams, and an orifice plate supported by the plurality of ribs, wherein the orifice plate includes discharge ports for discharging liquid droplets which enter from the plurality of ink supply ports and is provided with discharge energy by the plurality of discharge energy generating elements. | 08-12-2010 |
| 20100201748 | INK JET PRINT HEAD - An object of the present invention is to provide an ink jet print head configured to reduce the inclination of an ink ejection direction to make improper print conditions such as stripes and density unevenness unnoticeable. To achieve the object, an individual wire is extended to lie under a common wire. Thus, wires under ink channels arranged on the respective opposite sides of a pressure chamber | 08-12-2010 |
| 20100201753 | INK JET PRINT HEAD - An ink jet print head is provided which has a reduced size and still can prevent an overall temperature increase in a printing element board. To this end, among ink supply port arrays formed on both sides of each nozzle array, the heat resistance of the portion (beams) of the printing element board between the adjoining ink supply ports is lowered in those arrays that are close to the end portions of the common liquid chamber. | 08-12-2010 |
| 20100201754 | INK JET PRINT HEAD - An ink jet print head is provided which can improve throughput by increasing an ink ejection frequency and prevent crosstalk among a plurality of heat application portions, realizing a capability of printing high-quality images at high speed. An opening size of the supply ports in a direction perpendicular to the array direction of the heat application portions is made greater than the length in the direction of electrothermal conversion elements. The supply ports are arranged along the array direction so that they adjoin the heat application portions in the array direction. | 08-12-2010 |
| 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 |
