Abstract: The method of manufacturing a liquid ejection head includes the steps of: forming a groove section in a first layer of a substrate including at least the first layer and a second layer, the groove section having a bottom face constituted by the second layer and being formed in a ring shape; forming a protective film on the groove section; forming a diaphragm on a surface of the first layer where the groove section is opened; forming a piezoelectric element on the diaphragm; forming an opening section in the diaphragm so as to expose a portion of a region of the first layer surrounded by the groove section; and etching the first layer via the opening section so as to form a pressure chamber, using the second layer as an etching stop layer.

Abstract: A first substrate 10 having a channel 12 which passes through the inside thereof and an opening 14a or 14b of the channel which is formed on at least one side thereof, and a second substrate 20 for forming a nozzle hole communicating with the channel are prepared. The second substrate is bonded to the one side of the first substrate where the channel opening 14b is formed so that the opening is blocked by the second substrate. The second substrate is etched with a mixed etching fluid, which contains a high-pressure fluid and an etching solution, fed thereto via the channel of the first substrate, thereby forming the nozzle hole 22 communicating with the channel.

Abstract: A piezoelectric device includes a lower electrode, a piezoelectric film and an upper electrode laminated in this order on a support. An oxide film containing a material that forms a lower electrode is formed on a side surface of the piezoelectric film. The piezoelectric device is produced such that an upper electrode and a piezoelectric film are patterned by dry-etching through a mask formed on a side of the upper electrode of the piezoelectric device member and thereafter a side surface of the patterned piezoelectric film (a film adhered to a side wall) is oxidized to form an oxide film.

Abstract: The dry etching method of performing etching, includes the steps of: supplying a processing gas which is a gas mixture of a plurality of fluorochemical gases; and generating plasma under a high vacuum while supplying the processing gas and applying a low-frequency bias voltage.

Abstract: Provided is a pneumatic tire which is lighter in weight and exhibits increased flat-spot resistance while keeping its durability and driving stability. The pneumatic tire according to the present invention includes a carcass layer being laid between paired right and left bead sections, and at least two belt layers being arranged at an outer peripheral side of the carcass layer in a tread section. The pneumatic tire is characterized in that a hybrid cord, used as reinforcement cords of the carcass layer, is obtained by imparting second twists, in a reverse direction of the first twists, to a bundle of: at least one rayon first twist yarn being obtained by imparting first twists to a bundle of rayon fibers; and at least one aramid first twist yarn being obtained by imparting, to a bundle of aramid fibers, first twists in the same direction of the first twists of the rayon first twist yarn.

Abstract: There is provided storage battery that is capable of enabling an easy and speedy fabrication work as well as preventing a terminal thereof from fading or decaying for a long time. A storage battery includes: a lid made of a synthetic resin for closing a container and having cutout portions or recesses; terminals disposed respectively in the cutout portions or the recesses; bushings each having a tubular shape located inside the lid; electrode poles extending from the container for taking out power, the electrode poles respectively inserted into the bushings and welded thereto; conductive portions each for electrically connecting an upper side of the bushing and a lower side of the terminal disposed in parallel with the bushing in a horizontal direction in each of the cutout portions or the recesses; and an auxiliary lid for covering the bushing disposed inside the lid from above.

Abstract: The present invention is a vertical boat 8 for heat treatment by which a plurality of wafer-like objects to be treated are supported with an interval in a vertical direction by a column having support surfaces and carried into a vertical heat treatment apparatus and carried out, wherein a lower surface of each of the wafer-like objects to be treated is supported by a plurality of support surfaces 4 formed on the column, a flatness of a plane formed by the plurality of the support surfaces being in contact with a same one of the objects to be treated is 0.03 mm or less, and a parallelism thereof is 0.07 mm or less. Thereby, there can be provided a vertical boat for heat treatment and a method for heat treatment by which even if the heat treatment is performed at an extremely high temperature of 1200° C.

Abstract: The nozzle plate has a nozzle hole formed therethrough, the nozzle hole being defined in the nozzle plate with an inner surface including a first liquid-philic portion, a liquid-phobic portion and a second liquid-philic portion that are arranged in this order from a side near the nozzle mouth, the first and second liquid-philic portions having liquid-philicity, the liquid-phobic portion having liquid-phoblicity.

Abstract: The method of manufacturing a liquid ejection head includes the steps of: forming a groove section in a first layer of a substrate including at least the first layer and a second layer, the groove section having a bottom face constituted by the second layer and being formed in a ring shape; forming a protective film on the groove section; forming a diaphragm on a surface of the first layer where the groove section is opened; forming a piezoelectric element on the diaphragm; forming an opening section in the diaphragm so as to expose a portion of a region of the first layer surrounded by the groove section; and etching the first layer via the opening section so as to form a pressure chamber, using the second layer as an etching stop layer.

Abstract: The method of manufacturing a nozzle plate which includes a nozzle having a tapered section and a linear section includes the steps of: forming an etching stopper layer for stopping dry etching of a silicon substrate, on a first surface of the silicon substrate; forming a mask layer on a second surface of the silicon substrate reverse to the first surface; performing a first patterning process with respect to the mask layer so that an opening section is formed in the mask layer; carrying out the dry etching of the silicon substrate through the opening section in the mask layer so that the tapered section of the nozzle is formed in the silicon substrate; carrying out dry etching of the etching stopper layer through the opening section in the mask layer so that at least a part of the linear section of the nozzle is formed in the etching stopper layer; and removing the mask layer.

Abstract: Disclosed is a rubber reinforcing fiber cord in which an eco-friendly silk material is made usable for applications in an automobile pneumatic tire and the like acted upon by large loads. The rubber reinforcing fiber cord of the present invention is characterized in that: a multi-filament twisted cord formed of silk fibroin fibers having a total fineness of 1500 to 9000 dtex is covered with an adhesive agent formed of resorcin, formalin and rubber latex in order that a dip pickup thereof on the cord can become 4.0 to 8.0% per unit weight of the fibers; and the cord has an initial tensile strength not less than 3.5 cN/dtex, a high-temperature strength retention rate not less than 80%, and a post-moisture-absorption strength retention rate not less than 85%. The cord is usable in a belt reinforcing later and/or a carcass layer of a radial pneumatic tire for a passenger car.

Abstract: Disclosed is a rubber reinforcing fiber cord in which an eco-friendly silk material is made usable for applications in an automobile pneumatic tire and the like acted upon by large loads. The rubber reinforcing fiber cord of the present invention is characterized in that: a multi-filament twisted cord formed of silk fibroin fibers having a total fineness of 1500 to 9000 dtex is covered with an adhesive agent formed of resorcin, formalin and rubber latex in order that a dip pickup thereof on the cord can become 4.0 to 8.0% per unit weight of the fibers; and the cord has an initial tensile strength not less than 3.5 cN/dtex, a high-temperature strength retention rate not less than 80%, and a post-moisture-absorption strength retention rate not less than 85%. The cord is usable in a belt reinforcing later and/or a carcass layer of a radial pneumatic tire for a passenger car.

Abstract: The repellency increasing structure includes a substrate, if a surface of the substrate is flat, a flat surface of which shows lyophilic property with respect to a liquid having a surface tension lower than that of water and multiple recesses multiple and/or projections that are formed in the surface of the substrate. Inner walls of the recesses and outer walls of the projections are substantially parallel to a thickness direction of the substrate. The structure further includes a repellent layer that covers the recesses and the projections. In the liquid ejection head, a solution ejection surface around multiple through-holes of a ejection substrate corresponds to the surface of the substrate of the repellency increasing structure in which the recesses and/or the projections are formed. In the stain-resistant film, the substrate of the repellency increasing structure is a support film.

Abstract: A motor of this invention is provided with a sleeve-type bearing impregnated with oil for supporting a rotor assembly including a shaft and a rotor member. A lower face of the rotor is provided with at least two peripheral wall portions, an inner peripheral wall portion and an outer peripheral wall portion, which surround the shaft with a gap therebetween in a radial direction. The peripheral wall portions are accommodated in an annular recessed portion so as to surround an open space over a sleeve constituted the sleeve-type bearing and has a lower top of the most inner part. The lower end of the inner peripheral wall portion is located lower than the lower end of the outer peripheral wall portion, and the lower end of the outer peripheral wall portion is located lower than the lower top of the annular recessed portion.

Abstract: A lead wire is led out to a fan outer frame portion side through a lead wire retaining portion that is provided to a motor support portion of a housing that fixes a fan motor so as to protrude to a fan outer frame portion side or is provided to the fan outer frame portion of the housing so as to protrude to the motor support portion side. The lead wire retaining portion is positioned between neighboring support beams for fixing the motor support portion to the fan outer frame portion.

Abstract: A data read/write control system includes memory divided into a plurality of blocks, a write unit, and a read unit. When writing data to one block of the plurality of blocks, the write unit compares a size of the data with a capacity of a blank area of the block. If the size of the data is larger, the write unit erases all data stored in the block and sequentially writes the data to the block from top or end. If, on the other hand, the size of the data is smaller, the write unit sequentially writes the data to the block from an area next to an area where data is stored. When reading data from the block, the read unit sequentially searches the block from top or end to find an area where data is written last, and reads the data stored in the area.

Abstract: A motor of this invention is provided with a sleeve-type bearing impregnated with oil for supporting a rotor assembly including a shaft and a rotor member. A lower face of the rotor is provided with at least two peripheral wall portions, an inner peripheral wall portion and an outer peripheral wall portion, which surround the shaft with a gap therebetween in a radial direction. The peripheral wall portions are accommodated in an annular recessed portion so as to surround an open space over a sleeve constituted the sleeve-type bearing and has a lower top of the most inner part. The lower end of the inner peripheral wall portion is located lower than the lower end of the outer peripheral wall portion, and the lower end of the outer peripheral wall portion is located lower than the lower top of the annular recessed portion.

Abstract: A method of rewriting a boot program into a memory device including at least first and second memory blocks to which a boot program can be electrically written and from which a boot program can be electrically erased, includes the steps of (a) erasing data stored in the second memory block to which a new boot program is to be written, (b) writing a new boot program into the second memory block, (c) changing an address of the second memory block such that the second memory block can be recognized as the new primary boot block, (d) erasing an existing boot program from the first memory block, and leaving the second memory block as the primary boot block until a further new boot program is written into the memory device.

Abstract: A buffer circuit of an LSI includes first inverter and a second inverter cascaded from the first inverter, each of the first and second inverters including a pMOSFET and an nMOSFET. The body areas or backgates of the pMOSFETs operating in opposite phases and body areas of the nMOSFETs operating in opposite phases are respectively coupled together via a coupling line, to thereby prevent hysteresis or fluctuation of the delay time in the operation of the buffer circuit.

Abstract: A method of rewriting a boot program in a memory device including at least first and second memory blocks to which a boot program can be electrically written and from which a boot program can be electrically erased, includes the steps of (a) erasing data stored in the first memory block (28) to which a new boot program is to be written, (b) writing a new boot program into the first memory block (28), (c) changing an address of the first memory block (28) such that the first memory block (28) can be recognized as a boot block, and (d) erasing a boot program out of the second memory block (26).