Abstract: Provided are a liquid ejection head, a liquid ejection apparatus and a manufacturing method for the liquid ejection head which make it possible to achieve both of high-speed printing and a reduction in number of recovering operations. A liquid chamber which is formed in a part of a flow passage that guides liquid to an ejection element substrate includes plural supply paths which are able to supply the liquid by capillarity, are connected together and are different from one another in width.

Abstract: A liquid ejection head has a plurality of ejection ports for ejecting a liquid, and a housing provided with a pair of liquid chambers which supply the liquid to a corresponding ejection port. A method for manufacturing the liquid ejection head includes: arranging a pair of mold pieces, of which width decreases gradually, to adjoin in the width direction thereof with the width decreasing in the opposite directions, molding a housing, and forming the pair of liquid chambers by drawing the pair of mold pieces from the molded housing in the direction in which the width increases.

Abstract: A housing and a cover member are injection-molded and these housing and cover member are joined within a pair of mold. When the housing and the cover member are joined by molten resin, a mold for suppressing deformation is positioned at a face of the housing opposite to a face receiving a pressure of the molten resin.

Abstract: An opposed surface of a first flow path forming member has a groove portion forming a supply passage, and a protruding portion protruding from the edge of the groove portion to form the side wall of the groove portion. An opposed surface of a second flow path forming member has a lid portion that abuts against the protruding portion of the first flow path forming member to cover the opening of the groove portion in the first flow path forming member. A joining member is formed by injection-molding of a resin to abut against an outer surface of the protruding portion of the first flow path forming member and the opposed surfaces of the first and second flow path forming members.

Abstract: A liquid ejecting head and a liquid ejecting apparatus that can suppress the influence of noise on a control signal includes a plurality of terminals for being electrically connected with a contact point provided in a liquid ejecting apparatus, and a liquid ejecting element substrate having a liquid ejecting element formed for ejecting liquid in response to a control signal transmitted from the liquid ejecting apparatus. The plurality of terminals includes signal terminals and ground terminals for control, for controlling the liquid ejecting element, and the signal terminals and the ground terminals for control are arranged at positions closer to the liquid ejecting element substrate than other terminals.

Abstract: A liquid ejecting head and a liquid ejecting apparatus are designed so as to suppress the influence of noise on control signals. The liquid ejecting head has a plurality of terminals electrically connected with a contact point provided in the liquid ejecting apparatus, and a liquid ejecting element substrate having a liquid ejecting element formed for ejecting liquid in response to the control signals transmitted from the liquid ejecting apparatus. A power source terminal for drive and a ground terminal for drive, which are provided for driving the liquid ejecting element, are arranged adjacent to each other, and a power source wiring that connects the power source terminal for drive with the liquid ejecting element substrate and a ground wiring that connects the ground terminal for drive with the liquid ejecting element substrate are at least partially arranged in parallel.

Abstract: There is provided a liquid supply member capable of suppressing deformation of a liquid supply path and decrease in sealing property of a liquid supply path, during molding, and a manufacturing method of the liquid supply member. For that purpose, in die-slide injection molding that combines two components, a protection portion that protects a part of one component easily affected by heat and pressure, is provided on the other component.

Abstract: There is provided a manufacturing method of a liquid supply member capable of suppressing decrease in sealing property of a liquid supply path and deformation of the liquid supply path or the external shape. For that purpose, a manufacturing process of a liquid supply member prevents inflow of a molten resin into a concave portion of a portion other than a liquid supply flow path in a liquid supply member.

Abstract: A resin molding method includes a first molding step of molding a first molded part and a second molded part in a mold and a second molding step of joining the first molded part and the second molded part. In the first molding step, the second molded part is formed by injecting resin into an area where a first core movable in the first direction and a second core movable in a second direction are engaged. In the second molding step, the second molded part is joined to the first molded part by injecting the resin while the first core is in contact with the second molded part and the second core is removed from the second molded part. Areas where the first core and the second core are located in the first molding step become hollow areas connected to each other and part of ends of the first core in the first direction is not in contact with the second core.

Abstract: A filter is compressed between facing surfaces of a first configuration component and a second configuration component, and a molten resin is poured in such a compressed state. Injection molding of the first configuration component and the second configuration component, joining of the configuration components, and sealing of the circumference of the filter are performed by a pair of metal molds.

Abstract: A resin molding method includes a first molding step, a sliding step, a second molding step and a mold opening step. In the first molding step, first molded part supported in a fixed mold and a second molded part supported in a die slide mold are molded in different positions in a second direction. In the sliding step, the movable mold is removed in a first direction and the first molded part and the second molded part are aligned by the die slide mold is moved in the second direction. In the second molding step, the movable mold is clamped again with the fixed mold and resin is injected into engaged portions. Each of the first molded part and the second molded part includes at least one wall extending in the first direction, and in the second molding step, the first molded part and the second molded part are engaged with each other at sides of the walls extending in the first direction.

Abstract: A liquid ejection head includes a circuit board having a wire pattern divided into a plurality of portions in order to provide the circuit board with very reliable bonding.

Abstract: In a liquid ejection head and a liquid ejection apparatus that can suppress deterioration of image quality, a plurality of second beam-shaped member is provided on the downstream side of a first beam-shaped member in a flow passage connected to an ejection element substrate. The first beam-shaped member divides the flow passage into two flow passages in a liquid-flowing direction and the second beam-shaped member sandwich a line extending from the first beam-shaped member in the liquid-flowing direction.

Abstract: There is provided a method for manufacturing a molded member having a hollow part. The method comprises a step for molding the hollow part by extracting a first piece, a second piece, a third piece and a fourth piece of a mold in four different directions. The second piece has an elongated shape in its extracting direction, the second piece and the fourth piece have extracting directions substantially opposed to each other, and at the molding, each of the first piece, the second piece, the third piece and the fourth piece abuts on at least one of the first piece, the second piece, the third piece and the fourth piece.

Abstract: A holding member provided in a liquid ejection apparatus is attached to a receiving member and includes a capturing portion capturing a supply member so as to hold the supply member. The capturing portion is displaceable while the holding member is attached to the receiving member.

Abstract: A liquid discharge head includes a wiring portion; a print element board including an element for applying discharge energy to liquid; and an electric wiring board including a connecting portion connected to the wiring portion and electrically connecting the wiring portion and the print element board. The connecting portion is provided with a cut portion at a position between both end portions in a width direction of the connecting portion, and a length of the cut portion in the width direction is shorter than a length of the cut portion in a direction orthogonal to the width direction.

Abstract: In a liquid ejection head and a liquid ejection apparatus capable of reducing the occurrence of ejection malfunction, in a connecting section where a first flow channel and a second flow channel connect, a projecting member is provided on the flow channel wall forming the second flow channel.

Abstract: A liquid discharge head includes a recording element substrate including a recording element, an electronic substrate disposed outside the recording element substrate, an electric element mounted on the electronic substrate, a housing that supports the recording element substrate and the electronic substrate and is made of a first resin material, and a cover member that surrounds and shields the electric element and is made of a second resin material, wherein the second resin material has higher heat resistance than the first resin material.

Abstract: There is provided a manufacturing method for molding a liquid supply member by using a first mold and a second mold. The method includes a first molding step of performing injection molding to form a first component part of the liquid supply member and a plurality of component parts of the liquid supply member other than the first component part at different positions from each other, with the first and the second mold closed relative to each other, a contacting step of moving each of the formed plurality of component parts relatively to the first component part to bring the formed first component part into contact with the formed plurality of component parts, with the first and the second mold opened relative to each other, and a second molding step of performing injection molding to join the first component part and the plurality of component parts.

Abstract: Provided is construction that in die slide injection molding, surely leaves each part in a mold on a specified side in the stage of opening a molding mold. In order to accomplish this, in an opening step, a push-out mechanism that applies a force on at least one of the individual parts is used to make the part surely belong to a desired mold.