Abstract: A manufacturing method for manufacturing a liquid ejection element including a liquid flow path which is open at an ejection outlet for ejecting liquid, and an energy generating member for generating energy usable for ejecting the liquid from liquid flow path through the ejection outlet, the manufacturing method, includes a step of forming the energy generating member on a front side of a substrate; a step of forming a top plate member on the side having the energy generating member formed by the energy generating member forming step, wherein the top plate member is a member in which the liquid flow path and the ejection outlet are formed; and a step of thinning the substrate, having the top plate member formed thereon by the top plate member forming step, from a back side thereof.

Abstract: A method for manufacturing a substrate for a liquid discharge head having a silicon substrate provided with a supply port of a liquid comprises steps of preparing a substrate which is provided with a passive film on one side face thereof, has a first recess and a second recess provided therein so as to penetrate from the one side face into the inner part through the passive film, wherein the recesses satisfy a relation of a×tan 54.7 degrees?d, when a is defined as a distance between the first recess and the second recess, and d is defined as a depth of the second recess, and forming the supply port by anisotropically etching the crystal from the one side face.

Abstract: Provided is a method of manufacturing a substrate for a liquid discharge head, the substrate including a silicon substrate with a liquid supply opening formed therein, the method including: forming one processed portion by laser processing on the substrate from one surface of the substrate; expanding the one processed portion to form a recess portion by performing laser processing at a position which overlaps a part of the one processed portion and does not overlap another part of the one processed portion; and etching from the one surface the substrate with the recess portion formed therein to form the liquid supply opening.

Abstract: To provide a manufacturing method, for a liquid discharge head that includes a silicon substrate in which a supply port is formed for supplying a liquid, includes the steps of: providing the silicon substrate, a mask layer provided with an opening that corresponds to the supply port being provided on one face of the silicon substrate; forming a groove in the silicon substrate along the shape of the opening in the mask layer; removing, using sandblasting, silicon of the silicon substrate from the inner wall of the groove in the silicon substrate; and performing, from the one face, anisotropic etching of the silicon substrate that has been sandblasted, and forming the supply port.

Abstract: A method of manufacturing a substrate for a liquid discharge head having a silicon substrate in which a liquid supply port is provided includes providing the silicon substrate, an etching mask layer having an opening being formed on a one surface of the silicon substrate, forming a region comprising an amorphous silicon in the interior of the silicon substrate by irradiating the silicon substrate with laser light, forming a recess, which has an opening at a part of a portion exposed from said opening on said one surface, from said one surface of the silicon substrate toward the region, and forming the supply port by performing etching on the silicon substrate in which the recess and the region have been formed from said one surface through the opening of the etching mask layer.

Abstract: To provide a manufacturing method, for a liquid discharge head substrate that includes a silicon substrate in which a liquid supply port is formed, includes the steps of: preparing the silicon substrate, on one face of which a mask layer, in which an opening has been formed, is deposited; forming a first recessed portion in the silicon substrate, so that the recessed portion is extended through the opening from the one face of the silicon substrate to the other, reverse face of the silicon substrate; forming a second recessed portion by performing wet etching for the substrate, via the first recessed portion, using the mask layer; and performing dry etching for the silicon substrate in a direction from the second recessed portion to the other face.

Abstract: In order to form a more homogenous heat generating resistive layer, the present invention provides a method of manufacturing a substrate for an ink jet recording head having a support which has an insulative layer on its surface, a pair of electrode layers disposed on the surface of the support, and a heat generating resistive layer which continuously covers the pair of electrode layers and a section between the pair of electrode layers. The method includes the step of forming an electrode layer on the support and the step of forming the pair of electrode layers by etching the electrode layer. In the step of forming the pair of electrode layers by etching the electrode layer, by etching a surface portion of the insulative layer positioned between the pair of insulative layers, a recess is formed in the surface portion of the insulative layer.

Abstract: There is provided a substrate for an inkjet printing head and a method for manufacturing the same, in which the substrate has a structure that different kinds of metals do not come into contact with ink or moisture. For this purpose, the structure is constituted such that a diffusion preventing layer for mainly protecting a lower layer among power wiring metals is covered by a metal layer for mainly supplying power, in connection with its upper surface and at least part of a side surface. Herewith, since a single metal appears on a surface of the power wiring including up to its side surface, even circumstance occurs of coming into contact with the ink or the moisture, a battery reaction accompanied by difference of ionization tendency is not generated, and thus corrosion or short-circuit of the power wiring is suppressed.

Abstract: A liquid ejection head includes a substrate including, at a surface thereof, an ejection energy generating means for generating ejection energy for ejecting liquid, a flow path forming member provided with an ejection outlet, the substrate further including a liquid supply opening, penetrating therethrough, for supplying the liquid to be ejected by the ejection energy to a flow path of the flow path forming member; a reinforcing member connected to a back side of the substrate; a first penetrating electrode, penetrating the substrate from a front side to the back side thereof, for supplying electric power to the ejection energy generating means; and a second penetrating electrode penetrating the reinforcing member from a front side to a back side thereof, the second penetrating electrode being electrically connected to the first penetrating electrode.

Abstract: A method of manufacturing a liquid ejection head and a liquid ejection head capable of preventing corrosion of electrodes are provided. A method of manufacturing a liquid ejection head includes: a steps of forming porous silicon areas in portions of a silicon substrate where the liquid paths are to be formed; a steps of forming in layers in the porous silicon areas a protective layer, a heating resistor layer, an electrode layer and a heat accumulation layer; a steps of forming ink ejection openings in the silicon substrate; and a steps of removing the porous silicon areas.

Abstract: A manufacturing method for manufacturing a liquid ejection element substrate for a liquid ejection element for ejecting liquid through an ejection outlet, the liquid ejection element substrate including an energy generating element for generating energy for ejecting the liquid and an electrode for supplying electric power to the energy generating element, includes a step of forming on a front side of the substrate an energy generating element and wiring electrically connecting with the energy generating element; a step of forming a recess in the form of a groove on the side of the substrate at a position where the wiring is formed; a step of forming an embedded electrode electrically connected with the wiring by filling electrode material in the recess; and a step of thinning the substrate at a back side after formation of the embedded electrode to expose the embedded electrode at the back side of the substrate, thus providing an electrode exposed at the back side of the substrate.

Abstract: A liquid discharge head includes a substrate, discharge units each including one liquid discharge port discharging the liquid, an energy generating element on the surface of the substrate and generating energy to discharge the liquid from the liquid discharge port, one liquid chamber in which the energy generating element is disposed, one liquid supply port penetrating the substrate, one liquid path extending from the liquid supply port to the liquid discharge port through the liquid chamber, a penetrating wiring penetrating the substrate, an element wiring connecting the energy generating element to the penetrating wiring and a driving element on a back surface of the substrate and driving the energy generating element through the penetrating wiring and a common liquid chamber communicating with the substrate along the surface of which the discharge units are arranged through liquid routes having an equal distance to all of the liquid supply ports.

Abstract: Disclosed is a manufacturing method of a liquid discharge head having a discharge port which discharges a liquid, a flow path which communicates with the discharge port, a heating portion which is disposed correspondingly to the flow path and which generates heat energy for use in discharging the liquid from the discharge port and a protective layer which prevents the heating portion from being brought into contact with the liquid, the method comprising: forming porous silicon from a surface to an inner portion of a silicon substrate; sealing pores present in the surface of the porous silicon to smoothen the surface of the porous silicon; forming the protective layer on the smoothened surface of the porous silicon; forming the heating portion on the protective layer; forming the discharge port; and removing the porous silicon to form the flow path.

Abstract: A method for manufacturing a liquid ejection head having a substrate including an electro-thermal transducer for ejecting a liquid from an ejection opening, an electrode wiring section electrically connecting the electro-thermal transducer and driver element thereof, and a liquid supply port therethrough includes the steps of forming a sacrificial layer by using the same material as the electrode wiring section at a position at which the liquid supply port is to be formed during forming the electrode wiring section, forming an anti-etching layer covering the sacrificial layer, removing the sacrificial layer by etching the substrate from a surface thereof opposite to the surface on which the electro-thermal transducer is formed to expose the anti-etching layer of a portion to be the liquid supply port, and removing the exposed anti-etching layer to form the liquid supply port in the substrate.

Abstract: A belt continuously variable transmission apparatus having a case which includes a power transmission case (which is part of a crankcase of an engine), a power transmission case cover, and an actuator cover assembled forwardly of the power transmission case cover (displaced forwardly on a vehicle body). The actuator cover is formed as a separate member from the power transmission case cover, and supports a motor for driving a movable part of a driving pulley. In addition, the actuator cover covers a gear system. The actuator cover is integrated with a cover of the water pump. The resulting configuration improves the assembling of the actuator cover of the belt continuously variable transmission apparatus.

Abstract: A centrifugal clutch includes a clutch weight in a plane perpendicular to a rotation axis of an input member for enabling friction fitting to an inside of a clutch housing. The clutch weight is turnably supported by a drive plate. A grooved portion is provided on a clutch weight in a position that is opposite to a drive plate. At least one end of grooved portion is closed and is formed in a turning direction of the clutch. A damping rubber supported by the drive plate abuts against an inside face of the grooved portion. The damping rubber is held in the grooved portion in a compressed state by being compressed between the drive plate and the clutch weight. The centrifugal clutch so configured effectively inhibits vibration of a clutch weight when the clutch is let in, and minimizes both the parts required and man-hours for assembly.

Abstract: A method for forming an element substrate which includes a substrate, an ink supply port penetrating substrate and energy supplying means for supplying ejection energy to ink introduced through ink supply port, the method includes a step of forming the energy supplying means on the substrate, then; a step of thinning the substrate, and then; an ink supply port forming step of forming the ink supply port in the substrate.

Abstract: A manufacturing method for manufacturing a liquid ejection element substrate for a liquid ejection element for ejecting liquid through an ejection outlet, the liquid ejection element substrate including an energy generating element for generating energy for ejecting the liquid and an electrode for supplying electric power to the energy generating element, includes a step of forming on a front side of the substrate an energy generating element and wiring electrically connecting with the energy generating element; a step of forming a recess in the form of a groove on the side of the substrate at a position where the wiring is formed; a step of forming an embedded electrode electrically connected with the wiring by filling electrode material in the recess; and a step of thinning the substrate at a back side after formation of the embedded electrode to expose the embedded electrode at the back side of the substrate, thus providing an electrode exposed at the back side of the substrate.

Abstract: A manufacturing method for manufacturing a liquid ejection element including a liquid flow path which is open at an ejection outlet for ejecting liquid, and an energy generating member for generating energy usable for ejecting the liquid from liquid flow path through the ejection outlet, the manufacturing method, includes a step of forming the energy generating member on a front side of a substrate; a step of forming a top plate member on the side having the energy generating member formed by the energy generating member forming step, wherein the top plate member is a member in which the liquid flow path and the ejection outlet are formed; and a step of thinning the substrate, having the top plate member formed thereon by the top plate member forming step, from a back side thereof.

Abstract: The present invention provides a method for manufacturing an ink jet recording head utilizing ink bubbling by heating of an exothermic resistor to thereby eject ink and a method manufacturing the same, including the steps of: preparing a substrate provided with the exothermic resistor; applying such first resin on the substrate as to provide a first mold shape for forming the nozzle channel and the movable member; forming the first mold shape using the first resin; applying, on the substrate, second resin over the first mold shape for forming the nozzle channel and the movable member; and removing the first mold shape. By this method, the movable member is formed in the nozzle channel between the ink inlet and the exothermic resistor to thereby provide a high-density, high-accuracy ink jet recording head which can improve a frequency response while maintaining proper discharge performance.