Abstract: Provided are a liquid ejection head and a liquid ejection apparatus which make it possible to suppress deterioration of image quality. Therefore, a plurality of second beam-shaped members is provided on the downstream side of a first beam-shaped member which divides a flow passage connected to an ejection element substrate into two flow passages in a liquid-flowing direction so as to sandwich a line extending the first beam-shaped member in the liquid-flowing direction.

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 a plurality of supply paths which is able to supply the liquid by capillarity, is connected together and is different from one another in width.

Abstract: There is provided a manufacturing method for molding a liquid supply member by using a first mold and a second mold in which the first mold is capable of being slid relatively to the second mold, the method including a first molding step of performing injection molding to form a first and second component parts of the liquid supply member at different positions from each other, an evacuating step of sliding the formed second component part in a direction intersecting with a direction of sliding of the first mold relative to the second mold and with a direction of the opening and the closing the first and the second mold, a contacting step of bringing the formed second component part into contact with the molded first component part, and a second molding step of performing injection molding to join the first component part and the second component part.

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: 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 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: A wire pattern is divided into a plurality of portions in order to provide a circuit board for which very reliably bonding can be achieved and a liquid ejection head including the circuit board.

Abstract: Provided is a method for manufacturing a liquid-ejecting head whereby in die slide injection molding it is possible to stably inject resin in secondary molding without damaging the shapes of parts that were formed in primary molding. In order for that, in the connecting section in which a convex section of a cover member is inserted into an opening of a liquid-supply member, the closest distance to the opening in the area where secondary resin is injected is made larger than the gap between the opening and the convex section. As a result, the resin is prevented from flowing into a liquid path during the secondary molding.

Abstract: A molded part including a first member having a plurality of openings and a second member contacting with a peripheral edge of each of the plurality of openings so as to cover the openings, and having a hollow portion formed by sealing the contact portion with a sealing material, wherein: the second member defines a flow channel for filling the sealing material between the first member and the second member; the second member has a branched shape in which sections corresponding to positions covering the plurality of openings are branched from each other, and portions near a gate of the flow channel are connected as a common section; and the branched shape has a bridge structure for connecting the respective branched sections.

Abstract: First and second constituting components are injection-molded and joined within one pair of molds. In order to join the first and second constituting components, one of the respective regions of the first and second constituting components abutted to each other is pushed into the other.

Abstract: Provided is a configuration of a liquid ejecting head enabling a stable, continuous ink supply with the off-carriage method, even if force operates in the direction of joint needle insertion and removal. To this end, a joint opening that accepts insertion of a joint needle on a printing apparatus side is placed at a position closer to a joint face between an ejecting head and a sub tank unit than a positioning opening that engages with a positioning member on the printing apparatus side. Consequently, even if external force is produced due to coupling, the force exerted on the joint face that is a weak portion of an inkjet (IJ) head may be minimized.

Abstract: To provide a liquid ejecting head and a liquid ejecting apparatus that can suppress the influence of noise on a control signal. The liquid ejecting head has: 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 a signal terminal and a ground terminal for control, for controlling the liquid ejecting element; and the signal terminal and the ground terminal for control are arranged in positions closer to the liquid ejecting element substrate than other terminals.

Abstract: Provided is 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: To provide a liquid ejecting head and a liquid ejecting apparatus that can suppress the influence of noise on a control signal. The liquid ejecting head has: 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. A power source terminal for drive and a ground terminal for drive, 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: 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 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: A liquid ejection head includes a recording element substrate having an ejection port, a support member having a recessed portion and supporting the recording element substrate by a bottom portion of the recessed portion, wiring electrically connected to the recording element substrate and extending between the recording element substrate and a side surface of the recessed portion, a sealant with which the wiring is covered, and a passage formed in the support member and allowing a first region where the sealant is placed and a second region different from the sealed region to communicate with each other.

Abstract: A liquid discharge head includes: a recording element substrate and a plurality of electric connection units; and an electric wiring member that includes a plurality of input terminals, a plurality wirings held between films and electrically connected to the plurality of input terminals, and a plurality of lead lines conducted to the plurality of wirings. In this case, the plurality of wirings include a power line for supplying power to the energy generation elements and a signal line for supplying a signal to the energy generation elements. Relationships of A>B and B<D are satisfied, in which A is a largest width of the signal line, B is a largest width of the lead line connected to the signal line, and D is a largest width of the lead line connected to the power line.

Abstract: A liquid ejection head includes a recording element substrate provided with elements formed on one surface of the substrate for generating energy for ejecting liquid as well as first and second supply ports each piercing between both surfaces of the substrate for supplying the liquid to the elements; and a support member provided with first and second liquid storage portions, first and second communication paths that respectively allow the first and the second supply ports to communicate with the first and second liquid storage portions, the support member supporting the other surface of the substrate. The length of the first communication path is longer than that of the second communication path. The horizontal cross-sectional area of the first communication path in a direction perpendicular to the liquid supply direction is larger than that of the second communication path.

Abstract: A liquid ejection head including a recording element substrate provided with an element formed on one surface of the substrate for generating energy for ejecting liquid as well as a first and a second supply port each piercing between both surfaces of the substrate for supplying the liquid to the element; a support member provided with a first and a second liquid storage portion, a first and a second communication path that respectively allows the first and the second supply port to communicate with the first and the second liquid storage portion, the support member supporting the other surface of the substrate. The length of the first communication path is longer than that of the second communication path. The horizontal cross-sectional area of the first communication path in a direction perpendicular to the liquid supply direction is larger than that of the second communication path.