Patent application number | Description | Published |
20090085985 | LIQUID JET HEAD, METHOD FOR MANUFACTURING THE LIQUID JET HEAD, AND LIQUID JET APPARATUS - A liquid jet head includes: a nozzle plate provided with a nozzle orifice for jetting a liquid; a passage-forming substrate provided with a pressure generating chamber communicating with the nozzle orifice and bonded to the nozzle plate with an adhesive agent; and a pressure generator that vibrates a vibration plate, the pressure generator disposed in a region opposite to the pressure generating chamber with the vibration plate interposed in between. The passage-forming substrate is provided with a concave portion formed in a joint surface to the nozzle plate. The concave portion has a wall surface inclined from a side adjacent to the nozzle plate to an inside of the concave portion. An angle between the joint surface and the inclined wall surface of the concave portion is smaller than an angle between the joint surface and a wall surface of the pressure generating chamber in a region contacting the joint surface. The inclined wall surface of the concave portion is provided with a plurality of protrusions. | 04-02-2009 |
20090185011 | LIQUID JET HEAD AND A LIQUID JET APPARATUS - In a passage forming substrate | 07-23-2009 |
20090273653 | LIQUID EJECTING HEAD AND LIQUID EJECTING APPARATUS - A liquid ejecting head includes: a flow passage forming substrate which is provided with a plurality of liquid passages each having a pressure generating chamber communicating with a nozzle opening for ejecting a liquid and a communication section communicating with the plurality of liquid passages; an elastic film which is formed on one surface of the flow passage forming substrate and has an opening in an area opposed to the communication section; a pressure generating unit which applies pressure to the inside of the pressure generating chambers; and a reservoir forming substrate which is adhered onto the surface of the flow passage forming substrate on a side of the pressure generating unit and is provided with a reservoir section communicating with the communication section to form a part of a reservoir. An intermediate layer patterned inward from the opening of the elastic film is formed in an area which is a periphery of the communication section on the elastic film and corresponds to the liquid passages, and the flow passage forming substrate and the reservoir forming substrate are adhered to each other through the intermediate layer. An end portion of the intermediate layer on a side of the opening of the elastic film is formed as a tapered portion of which a thickness is gradually smaller, and a cross-section shape in a direction in which the thickness of the tapered portion is gradually smaller is a concavely curved plane. | 11-05-2009 |
20100245517 | PIEZOELECTRIC MOTOR, LIQUID EJECTING APPARATUS, AND CLOCK - A piezoelectric motor includes a piezoelectric element having a piezoelectric layer, and a first and a second electrodes, the first electrode provided on one surface side of the piezoelectric layer, and the second electrode provided on the other surface side of the piezoelectric layer; a piezoelectric actuator having a vibrating member anchored to the first electrode of the piezoelectric element; and a rotational shaft with which the vibrating member makes contact and is rotated thereby. The piezoelectric layer includes a vertical vibration excitation region, provided toward the center of the piezoelectric layer in the widthwise direction, that elicits vertical vibrations, and two groups of bending vibration excitation regions, one group disposed on either side of the vertical vibration excitation region so that two opposing diagonal pairs are formed; and the polarization direction of the vertical vibration excitation region and one of the groups of the bending vibration excitation regions in the piezoelectric layer is inverted relative to the other group of the bending vibration excitation regions. | 09-30-2010 |
20100245518 | PIEZOELECTRIC MOTOR, LIQUID EJECTING APPARATUS AND TIMEPIECE - A piezoelectric motor includes: a piezoelectric actuator; and a driven portion. The piezoelectric actuator includes a piezoelectric element and a vibration member. The piezoelectric element has a piezoelectric layer and a first and a second electrode provided on both surfaces of the piezoelectric layer, respectively, and the vibration member is fixed on the first electrode side of the piezoelectric element. The driven portion which is rotated by the protrusion portion of the vibration member vibrated by the piezoelectric element, while the driven portion being abutted thereon. In the piezoelectric motor, a plurality of grooves which are open at a tip end surface of the protrusion portion and penetrate in a thickness direction are provided on a plurality of points of the protrusion portion along a rotation direction of a rotation shaft of the driven portion. | 09-30-2010 |
20120062655 | LIQUID EJECTING HEAD AND LIQUID EJECTING APPARATUS - A liquid ejecting head that includes a fluid channel formation substrate and pressure generation units. The fluid channel formation substrate is made of a silicon single crystal substrate having a crystal face orientation of. The fluid channel formation substrate has a plurality of separate flow channels that include at least pressure generation chambers demarcated by partition walls, each of the pressure generation chambers being in communication with a nozzle opening that ejects liquid drops. The fluid channel formation substrate further has a communication portion that is in communication with each of the separate flow channels. The pressure generation units are provided so as to correspond to the pressure generation chambers and generate a pressure change in the pressure generation chambers so as to cause ejection of liquid drops. | 03-15-2012 |
20130088546 | LIQUID EJECTING HEAD AND LIQUID EJECTING APPARATUS - A liquid ejecting head that includes a fluid channel formation substrate and pressure generation units. The fluid channel formation substrate is made of a silicon single crystal substrate having a crystal face orientation of. The fluid channel formation substrate has a plurality of separate flow channels that include at least pressure generation chambers demarcated by partition walls, each of the pressure generation chambers being in communication with a nozzle opening that ejects liquid drops. The fluid channel formation substrate further has a communication portion that is in communication with each of the separate flow channels. The pressure generation units are provided so as to correspond to the pressure generation chambers and generate a pressure change in the pressure generation chambers so as to cause ejection of liquid drops. | 04-11-2013 |
20130335485 | LIQUID EJECTING HEAD AND LIQUID EJECTING APPARATUS - A liquid ejecting head that includes a fluid channel formation substrate and pressure generation units. The fluid channel formation substrate is made of a silicon single crystal substrate having a crystal face orientation of. The fluid channel formation substrate has a plurality of separate flow channels that include at least pressure generation chambers demarcated by partition walls, each of the pressure generation chambers being in communication with a nozzle opening that ejects liquid drops. The fluid channel formation substrate further has a communication portion that is in communication with each of the separate flow channels. The pressure generation units are provided so as to correspond to the pressure generation chambers and generate a pressure change in the pressure generation chambers so as to cause ejection of liquid drops. | 12-19-2013 |
20140152150 | PIEZOELECTRIC MOTOR, LIQUID EJECTING APPARATUS AND TIMEPIECE - A piezoelectric motor includes: a piezoelectric actuator; and a driven portion. The piezoelectric actuator includes a piezoelectric element and a vibration member. The piezoelectric element has a piezoelectric layer and a first and a second electrode provided on both surfaces of the piezoelectric layer, respectively, and the vibration member is fixed on the first electrode side of the piezoelectric element. The driven portion which is rotated by the protrusion portion of the vibration member vibrated by the piezoelectric element, while the driven portion being abutted thereon. In the piezoelectric motor, a plurality of grooves which are open at a tip end surface of the protrusion portion and penetrate in a thickness direction are provided on a plurality of points of the protrusion portion along a rotation direction of a rotation shaft of the driven portion. | 06-05-2014 |
20140198626 | PIEZOELECTRIC MOTOR, LIQUID EJECTING APPARATUS, AND CLOCK - A piezoelectric motor includes a piezoelectric element having a piezoelectric layer, and a first and a second electrodes, the first electrode provided on one surface side of the piezoelectric layer, and the second electrode provided on the other surface side of the piezoelectric layer; a piezoelectric actuator having a vibrating member anchored to the first electrode of the piezoelectric element; and a rotational shaft with which the vibrating member makes contact and is rotated thereby. The piezoelectric layer includes a vertical vibration excitation region, provided toward the center of the piezoelectric layer in the widthwise direction, that elicits vertical vibrations, and two groups of bending vibration excitation regions, one group disposed on either side of the vertical vibration excitation region so that two opposing diagonal pairs are formed; and the polarization direction of the vertical vibration excitation region and one of the groups of the bending vibration excitation regions in the piezoelectric layer is inverted relative to the other group of the bending vibration excitation regions. | 07-17-2014 |
Patent application number | Description | Published |
20080218393 | A-D CONVERTER AND A-D CONVERT METHOD - There is provided an A/D converter that outputs a digital output signal obtained by digitalizing an analog input signal. The A/D converter includes a bit selecting section that selects a conversion object bit from a high-order bit to a low-order bit of the digital output signal in order, a threshold-value controlling section that determines a threshold data expressing a boundary value between zero and one of the conversion object bit, a D/A converting section that digital-to-analog converts the threshold data and generates an analog threshold value, a comparing section that compares, at a plurality of different timings in a conversion time interval determining a value of the conversion object bit, the analog input signal and the analog threshold value and outputs a plurality of comparison results at the timings, and a bit determining section that determines the value of the conversion object bit. | 09-11-2008 |
20090121907 | D-A CONVERT APPARATUS AND A-D CONVERT APPARATUS - Provided is a D-A conversion apparatus that outputs an analog output voltage according to digital input data, which includes a capacitance array main D-A converter that supplies a main voltage according to the input data to an output terminal of the D-A conversion apparatus, a correction data output section that outputs correction data according to the input data, a capacitance array correction D-A converter that outputs a correction voltage according to the correction data, and a voltage dividing capacitor connected serially between an output end of the correction D-A converter and an output end of the main D-A converter. | 05-14-2009 |
20100013690 | A-D CONVERT APPARATUS - Provided is a successive approximation AD conversion apparatus that outputs digital output data corresponding to an analog input signal, including a bit selecting section that selects a conversion target bit sequentially from a highest bit of the output data; a data control section that outputs comparison data determining a value of the conversion target bit, each time a conversion target bit is selected; a DA conversing section that outputs an analog comparison signal corresponding to the comparison data; a comparing section that outputs a comparison result between the input signal and the comparison signal, upon the output of the comparison signal by the DA converting section, and that is reset after outputting the comparison result; a completion detecting section that, upon detecting that the comparing section has output the comparison result, outputs a completion signal causing the bit selecting section to select a next conversion target bit, prior to the comparing section being reset; and an output section that outputs output data in which a value of each bit is based on the comparison result by the comparing section. | 01-21-2010 |
20100013693 | A-D CONVERT APPARATUS - Provided is an AD conversion apparatus including a bit selecting section that sequentially selects conversion target bits of the output data, from an upper bit downward; a data control section that outputs comparison data determining a value of the conversion target bit, each time a conversion target bit is selected; a DA converting section that outputs an analog comparison signal corresponding to the comparison data; a timing generating section that outputs a comparison control signal ordering comparison initiation; a changing section that changes a timing of the comparison control signal according to a bit position of the conversion target bit, such that the timing of the comparison initiation indicated by the comparison control signal is later for higher conversion target bits; a comparing section that begins comparing the input signal to the comparison signal at the comparison initiation timing indicated by the comparison control signal having the timing changed by the changing section; and a completion detecting section that outputs a completion signal causing the bit selecting section to select a next conversion target bit, after the comparing section has output the comparison result. | 01-21-2010 |
20110215959 | COMPARATOR AND ANALOG/DIGITAL CONVERTER - To provide a comparator and an A/D converter having the comparator. The comparator includes a differential amplifier circuit section and a differential latch circuit section. A first input voltage signal, a second input voltage signal and a clock signal are inputted to the differential amplifier circuit section. The differential amplifier circuit section operates base on the clock signal to output a first output voltage signal and a second output voltage signal which respectively correspond to the value the input voltage signal and the value of the reference voltage signal and are amplified. The differential latch circuit section operates based on the first and second output voltage signals to keep and output a comparison result between the first input voltage signal and the second input voltage signal. | 09-08-2011 |
20130044017 | PIPELINE A/D CONVERTER AND A/D CONVERTING METHOD - An A-type converter circuit compares an input voltage with multiple threshold voltages, judges which segment it belongs to, and generates first and second voltages with the input voltage segment between them. The A-type converter circuit generates third and fourth voltages by amplifying the differences between the first and the input voltages and between the second and the input voltages. A B-type converter circuit divides the range between the third and fourth voltages into multiple segments, and judges which segment includes the common voltage. Subsequently, the B-type converter circuit generates fifth and sixth voltages with the common voltage segment between them. The B-type converter circuit generates a seventh (the next stage's third voltage) and an eighth voltage by amplifying the differences between the fifth and the common voltages and between the sixth and the common voltages. | 02-21-2013 |
20140016731 | Millimeter-Wave Band Radio Transceiver Device - Provided is a millimeter wavelength range transceiver device which can improve phase noise characteristics and which can also independently calibrate each respective local oscillator of a transmission unit and a reception unit. This millimeter wavelength range transceiver device comprises a transmission unit ( | 01-16-2014 |
Patent application number | Description | Published |
20140352459 | DRIVE DEVICE, ELECTRONIC COMPONENT CARRYING DEVICE, ELECTRONIC COMPONENT INSPECTION DEVICE, ROBOT HAND, AND ROBOT - A drive device includes plural moving portions, piezoelectric motors that move the moving portions, at least one drive circuit that drives the piezoelectric motors, and a connection/disconnection portion that connects and disconnects the piezoelectric motors and the drive circuit. The number of drive circuits is fewer than the number of piezoelectric motors. | 12-04-2014 |
20140366646 | FORCE DETECTOR, ROBOT, ELECTRONIC COMPONENT CARRYING APPARATUS, ELECTRONIC COMPONENT TESTING APPARATUS, PART PROCESSING APPARATUS, AND MOVING OBJECT - A force detector includes a first substrate, a second substrate, a circuit board provided between the first substrate and the second substrate, and an element mounted on the circuit board and outputting a signal in response to an external force, wherein a hole is formed in the circuit board at a location where the element is placed, and a first convex part inserted into the hole and protruding toward the element is provided on the first substrate. Further, the element is placed within a periphery of the first convex part as seen from a direction perpendicular to the first substrate. | 12-18-2014 |