Abstract: The present invention provides a liquid ejecting head in which a chip crack is unlikely to occur. To achieve this, a liquid ejecting head includes an element substrate having energy generating elements arranged on the front face of the element substrate in its longitudinal direction and a channel member having ejection ports formed to correspond to the energy generating elements, respectively. In the element substrate, a supply port for supplying liquid is formed so as to pierce through from a back face to a front face of the element substrate, and inside the supply port, a beam is formed at a position closer to an end of the supply port rather than a center thereof in its longitudinal direction to connect facing inner walls of the supply port in its lateral direction.

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 ejection head includes a recording element board, a support member that supports the recording element board, and includes a first surface having a plurality of first openings that communicate with a first supply port and a second supply port, a second surface contacting a supply member and having a second opening that communicates with a supply path, and a flow path through which the plurality of first openings and the second opening communicate with each other. The support member includes a beam that is provided between the plurality of first openings and extends from the first surface to middle of the flow path, and in an arrangement direction of the plurality of first openings, a length of the second opening is shorter than a sum of lengths of the plurality of first openings and a length of the beam on the first surface.

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: There is provided a liquid ejecting device including a damper device which can sufficiently absorb dynamic pressure of a liquid while miniaturization of a device body is achieved and which can be easily manufactured. For that purpose, a part of an ink storage unit in the damper device is formed by a flexible member having a convex shape.

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: 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: 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: 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: 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: There is provided a liquid ejecting device including a damper device which can sufficiently absorb dynamic pressure of a liquid while miniaturization of a device body is achieved and which can be easily manufactured. For that purpose, a part of an ink storage unit in the damper device is formed by a flexible member having a convex shape.

Abstract: A liquid discharge head including a substrate having a plurality of energy-generating elements which generates energy used to discharge a liquid, and a supply port which is a through-hole for supplying the liquid to the energy-generating elements and which extends along an arrangement direction of the plurality of the energy-generating elements; and a discharge port forming member having a plurality of discharge ports for discharging the liquid and a pair of beam-shaped projections which are parallel to each other, which project toward the substrate, and which are formed along the arrangement direction at positions opposing to the supply port, wherein an interval of the pair of beam-shaped projections is larger than a length of the pair of beam-shaped projections in a direction orthogonal to the arrangement direction of the pair of beam-shaped projections.

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: 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: 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.