Patent application number | Description | Published |
20080198187 | LIQUID RESIDUAL AMOUNT DETECTION APPARATUS FOR LIQUID CONTAINER - A liquid residual amount detection apparatus for a liquid container, includes: a sensor chamber that has a liquid supply port introducing liquid to be delivered from a liquid containing portion, and supplies the liquid to an external liquid consuming apparatus; a diaphragm that defines a part of the sensor chamber and is movable in response to a liquid containing amount in the sensor chamber; a pressure receiving plate that is attached to the diaphragm; a recess portion that is connected to the sensor chamber and is closed by the pressure receiving plate when the liquid containing amount in the sensor chamber becomes a predetermined amount or less; a piezoelectric element that applies vibration to at least a part of the recess portion so as to detect a free vibration state according to the applied vibration; a detection portion that detects an amplitude value or a frequency of a residual vibration waveform of a counter electromotive force by the free vibration state detected by the piezoelectric element; and a calculation portion that calculates a liquid residual amount in the liquid container on the basis of the amplitude value or the frequency of the residual vibration waveform detected by the detection portion. | 08-21-2008 |
20080211838 | LIQUID CONTAINER - Provided herein a liquid container including a liquid containing portion for containing liquid; and an detection portion which is used to detect the amount of liquid contained in the liquid containing portion, receives an input driving signal, and outputs a detection signal having a frequency lower than that of the driving signal. | 09-04-2008 |
20090219313 | METHOD, HEAD, AND APPARATUS FOR EJECTING LIQUID - A liquid ejecting method includes ejecting a liquid through a liquid ejecting head. Viscosity of the liquid falls within a range from 6 mPa·s to 15 mPa·s. The liquid ejecting head includes a nozzle that ejects the liquid, a pressure compartment that causes a change in the pressure of the liquid to eject the liquid through the nozzle, and a supply unit that communicates with the pressure compartment and supplies the liquid to the pressure compartment. A channel flow resistance of the supply unit ranges from equal to or higher than a channel flow resistance of the pressure compartment to equal to or lower than twice the channel flow resistance of the pressure compartment. A channel length of the pressure compartment ranges from equal to or longer than a channel length of the supply unit to equal to or shorter than twice the channel length of the supply unit, | 09-03-2009 |
20090244128 | LIQUID EJECTING METHOD, LIQUID EJECTING HEAD, AND LIQUID EJECTING APPARATUS - Provided is a liquid ejecting method, including: ejecting a liquid from a liquid ejecting head, wherein the viscosity of the liquid is in a range from 6 mPa·s to 20 mPa·s, wherein the liquid ejecting head includes: nozzles which eject the liquid; a pressure chamber which applies a pressure variation to the liquid in order to eject the liquid from the nozzles; and a supply unit which communicates with the pressure chamber and supplies the liquid to the pressure chamber, and wherein the opening area of the nozzles on the side in which the liquid is ejected is or less of the opening area of the opening of the supply unit on the pressure chamber side. | 10-01-2009 |
20100188451 | LIQUID EJECTING APPARATUS AND METHOD CONTROLLING LIQUID EJECTING APPARATUS - A liquid ejecting apparatus includes: a liquid ejecting head which includes nozzles, pressure generating chambers communicating with the nozzles, and pressure generating elements causing a pressure change in a liquid of the pressure generating chambers and which ejects the liquid from the nozzles in response to an operation of the pressure generating elements; and a driving signal generating unit which drives the pressure generating elements to repeatedly generate a driving signal containing an ejection driving pulse used to eject the liquid from the nozzles. The ejection driving pulse has a pulse waveform containing a first pressure generating chamber expansion component which expands the pressure generating chamber to draw a meniscus toward the pressure generating chamber side, a pressure generating chamber contraction component which contracts the pressure generating chamber expanded by the first pressure generating chamber expansion component to push the meniscus toward the liquid ejection side, and a second pressure generating chamber expansion component which expands the pressure generating chamber contracted by the pressure generating chamber contraction component to draw the meniscus toward the pressure generating chamber side again. Each of the pressure generating chamber expansion components has a plurality of different potential change ratios. | 07-29-2010 |
20110007108 | LIQUID DISCHARGE APPARATUS AND METHOD - A liquid discharge apparatus includes a nozzle, a pressure chamber and a liquid supply portion that supplies the liquid to the pressure chamber. A discharge pulse generating unit generates a discharge pulse to discharge the liquid. The viscosity of the liquid is no less than 8 millipascal-seconds. The nozzle has a first portion with a discharge side that has an opening area smaller than that of a pressure chamber side and a second portion that communicates with an end portion of the discharge side. An opening area of the second portion is no greater than 1/9 of the opening area of the pressure chamber side. The discharge pulse has a decompression portion that decompresses the liquid to lead a meniscus in the second portion to the first portion and a compression portion that compresses the liquid to discharge the liquid before the meniscus returns to the second portion. | 01-13-2011 |
20110221809 | LIQUID EJECTING APPARATUS AND CONTROL METHOD THEREOF - A resonance pulse is a voltage waveform substantially containing an expansion element for varying a voltage to expand a pressure chamber, an expansion sustaining element generated following with the expansion element, and sustaining a maximum voltage at a predetermined value, and a contraction element generated following with the expansion sustaining element, and varying the voltage to contract the pressure chamber. A time span from a front end of the expansion element to a front end of the contraction element is set as ½ of an inherent vibration cycle of ink in the pressure chamber. | 09-15-2011 |
20110242171 | LIQUID EJECTING APPARATUS - An ejection pulse DP sequentially and continuously includes an expansion phase p | 10-06-2011 |
20120007906 | LIQUID EJECTING APPARATUS AND CONTROL METHOD - A liquid ejecting apparatus includes: a liquid ejecting head that includes nozzle openings through which liquid is ejected and pressure generation units that cause changes in pressure of the liquid inside pressure generation chambers communicating with the nozzle openings; a control unit that supplies a driving signal for causing the liquid ejecting head to eject the liquid, to the pressure generation units, and controls ejection of the liquid by the liquid ejecting head; and a temperature detection unit that detects a temperature of a contact portion with which the liquid ejected by the liquid ejecting head comes in contact, wherein the control unit corrects the driving signal on the basis of the temperature information detected by the temperature detection unit. | 01-12-2012 |
20120007909 | LIQUID EJECTING HEAD, LIQUID EJECTING HEAD UNIT, AND LIQUID EJECTING APPARATUS - Provided is a liquid ejecting head, a liquid ejecting head unit, and a liquid ejecting apparatus are provided that can secure sufficient compliance in a manifold and prevent degradation in liquid dispensing characteristic. In the liquid ejecting head, a flow path plate including pressure chambers arranged in a row, a manifold plate including a manifold communicating with the pressure chambers, thus constituting a common liquid chamber, a compliance plate that seals the manifold, and a nozzle plate including a nozzle orifice communicating with the pressure chamber so as to eject a liquid, are stacked in this order. The compliance plate includes a flexible compliance portion formed in a region opposing the manifold, and the nozzle plate includes a through hole formed in a region opposing the compliance portion. | 01-12-2012 |
20120013686 | LIQUID-JET HEAD AND LIQUID-JET APPARATUS HAVING SAME - A liquid-jet head comprising a pressure generating chamber, which is supplied with a liquid via a liquid supply path and in which a nozzle orifice for jetting the liquid is formed, and a pressure generator for causing a pressure change within the pressure generating chamber, wherein when an inertance and a passage resistance of the liquid supply path are designated as M | 01-19-2012 |
20120081468 | LIQUID EJECTING METHOD, LIQUID EJECTING HEAD, AND LIQUID EJECTING APPARATUS - Provided is a liquid ejecting method, including: ejecting a liquid from a liquid ejecting head, wherein the viscosity of the liquid is in a range from 6 mPa·s to 20 mPa·s, wherein the liquid ejecting head includes: nozzles which eject the liquid; | 04-05-2012 |
20120182353 | METHOD, HEAD, AND APPARATUS FOR EJECTING LIQUID - A liquid ejecting method includes ejecting a liquid through a liquid ejecting head. Viscosity of the liquid falls within a range from 6 mPa·s to 15 mPa·s. The liquid ejecting head includes a nozzle that ejects the liquid, a pressure compartment that causes a change in the pressure of the liquid to eject the liquid through the nozzle, and a supply unit that communicates with the pressure compartment and supplies the liquid to the pressure compartment. A channel flow resistance of the supply unit ranges from equal to or higher than a channel flow resistance of the pressure compartment to equal to or lower than twice the channel flow resistance of the pressure compartment. A channel length of the pressure compartment ranges from equal to or longer than a channel length of the supply unit to equal to or shorter than twice the channel length of the supply unit. | 07-19-2012 |
20120188300 | LIQUID EJECTING APPARATUS - The driving signal includes a first element that pressurizes the pressure chamber and that makes the liquid in the nozzle protrude to form a liquid pillar, and a second element that pressurizes the pressure chamber after the first element and that makes a portion of a liquid surface of the liquid, the portion being other than a surface of the liquid pillar, protrude from a position where the liquid surface in the nozzle is in contact with an inner surface of the nozzle, in a direction in which the liquid pillar protrudes, in a state where the liquid pillar has not yet separated from the liquid in the nozzle. | 07-26-2012 |
20120206521 | LIQUID EJECTING APPARATUS AND CONTROL METHOD THEREFOR - A liquid ejecting apparatus includes an ejection unit which includes a pressure chamber and a pressure generation element, and which ejects the liquid through a nozzle of the pressure chamber in accordance with the variation of the pressure inside the pressure chamber; a driving signal generation section; a driving section which causes the liquid to eject through the nozzle by supplying the pressure generation element with an ejection waveform included in the driving signal, and which transmits a slight vibration to the liquid contained in the pressure chamber a plurality of number of times during the driving period of time by supplying the pressure generation element with a plurality of slight vibration waveforms which is included during the driving period of time of the driving signal. | 08-16-2012 |
20140290828 | METHOD FOR MANUFACTURING LIQUID EJECTING HEAD - A method for manufacturing a liquid ejecting head including a laminate formed of a flow path substrate having a flow path communicating with nozzle openings that eject a liquid, a first electrode, a piezoelectric layer, and a second electrode, the method including stacking the first electrode, the piezoelectric material, the second electrode, and a reinforcing member on top of one another to form a laminate; heating the laminate to form a piezoelectric layer made of the piezoelectric material; bonding the laminate to the flow path substrate on a first electrode side; and removing the reinforcing member. | 10-02-2014 |
20140291285 | MANUFACTURING METHOD OF LIQUID EJECTING HEAD - Provided is a manufacturing method of a liquid ejecting head having a flow-path forming substrate in which a liquid flow path is provided to communicate with a nozzle opening through which liquid is discharged. The method includes performing wet etching on both surfaces of the flow-path forming substrate and forming the liquid flow path by removing a burr that is formed when the wet etching is performed on the flow-path forming substrate. | 10-02-2014 |
20140292944 | LIQUID EJECTING HEAD AND LIQUID EJECTING APPARATUS - An ink jet type recording head includes a plurality of pressure generation chambers which are filled with ink, and piezoelectric elements which eject ink droplet through nozzle openings which are provided so as to correspond to each pressure generation chamber by applying pressure to the ink in each pressure generation chamber. The pressure generation chamber has a shape such that the piezoelectric element in the opposite side to a protrusion side in which at least a portion of the piezoelectric element protrudes out of the pressure generation chamber is deformed more easily than that in the protrusion side. | 10-02-2014 |
20150116402 | LIQUID EJECTING APPARATUS - A maintenance pulse is a pulsed waveform that includes an expansion element that causes a pressure chamber to expand, a contraction element that causes the pressure chamber that is expanded by the expansion element to contract, and a reexpansion element that causes the pressure chamber that is contracted by the contraction element to expand again, and satisfies the following condition (1) when a time from the beginning of the contraction element to the beginning of the reexpansion element is given the term T | 04-30-2015 |
20150138291 | RECORDING APPARATUS - By providing a rotating body which supports three-dimensional recording media on a support surface in a direction which intersects with a gravity direction and which has a rotating shaft in the direction which intersects with the support surface, and a recording head which carries out recording onto recording media by discharging ink in a direction which intersects with the rotating shaft, recording is carried out with high quality with respect to the recording media while firmly supporting the three-dimensional recording media. | 05-21-2015 |