Abstract: A method of manufacturing a liquid discharging head includes preparing a wafer provided with an element and a discharge port formation member on a front surface of the wafer, forming a recessed portion in a rear surface of the wafer, attaching the rear surface of the wafer and a dicing tape, cutting the wafer along cutting lines to form an element board, and connecting an electric wiring board and a terminal of the element board. The element board includes a discharge port formation member having a discharge port for discharging liquid and includes the element to supply energy to the discharge port for liquid discharge. The recessed portion is formed at a location corresponding to the cutting lines, and an area of a region where the terminal overlaps the recessed portion is smaller than an area of a region where the terminal does not overlap the recessed portion.

Abstract: A liquid supply device, configured to supply a liquid from a liquid storage container having a storage portion and a supply portion, includes: a support portion having a first end portion, a second end portion, and a placement surface; an injection portion, to which the supply portion is connected; a pressing member; and a control portion configured to execute a supply operation for supplying liquid by controlling an action of the pressing member. In a state in which the supply portion is connected to the injection portion, the storage portion is placed on the placement surface. In the supply operation, the control portion causes the pressing member to move in a direction from the first end portion toward the second end portion in a state in which the pressing member is pressing the storage portion.

Abstract: A cartridge includes: a liquid storing bag; a casing including a storage portion for storing the liquid storing bag; a sealing member configured to seal an opening of the enclosure, and the cartridge supplies liquid in the liquid storing bag to outside. The storage portion has a first inner wall surface and a second inner wall surface. The liquid storing bag includes: a first welded portion facing the first inner wall surface; a second welded portion facing the second inner wall surface; and an outlet provided in the first welded portion to guide the liquid to the outside. The outlet is fixed to the first inner wall surface, and the second inner wall surface is provided with a first restricting portion projecting toward the storage portion and restricting a movement of the second welded portion toward the sealing member between the second welded portion and the seal member.

Abstract: A liquid discharge cartridge manufacturing method includes a first step of individually shaping a first shaped member and a second shaped member that form a housing of a liquid discharge cartridge, and a second step of joining the first shaped member and the second shaped member to be bonded to each other with molten resin. The first step includes shaping a wall section in the first shaped member, the wall section forming a recess for accommodating the molten resin, and shaping a projection in the second shaped member, the projection extending such that the projection is located at the outer side of the wall section and adjacent to the wall section, with a predetermined gap being formed between the projection and the wall section, when the first and second shaped members are joined.

Abstract: Provided is a liquid container attachable to a printing apparatus and configured to contain a liquid to be supplied to the printing apparatus, including: a container chamber configured to contain the liquid; a supply unit provided on a tip end side in a direction of attachment to be attached to the printing apparatus and configured to connect the container chamber to the printing apparatus; and a liquid holding unit provided to an inner peripheral surface of the supply unit and capable of holding the liquid by using a capillary force, the liquid leaking out in a case of attaching and detaching the liquid container to and from the printing apparatus, in which a length of the liquid holding unit in the direction of attachment of the liquid container is larger than a length of the liquid holding unit in a direction intersecting with the direction of attachment.

Abstract: An ink storage container detachably mounted to an apparatus main body of an ink ejection apparatus includes a flexible inner bag configured to store ink, a flexible outer bag configured to cover the inner bag, an ink discharge portion configured to discharge ink from the inner bag to the outside thereof, and an air introduction portion configured to introduce air into or discharging air from a space between the inner and outer bags. The technologies have the potential to contribute to achievement of a sustainable society such as a decarbonized society/circular society.

Abstract: An ink container configured to be attachable to and detachable from an apparatus main body of a liquid ejection apparatus includes: a channel configured to allow ink to flow in and out; and an ink containing portion formed of an elastic member and configured to contain the ink inside via the channel, in which a surface area in a state in which the ink containing portion contains the ink is at least twice as great as a surface area in a state in which the ink containing portion does not contain the ink.

Abstract: An ink container for supplying an ink to an ink ejection apparatus that ejects ink includes: an ink storage container configured with a containing space formed for internally containing the ink; and an ink supply port attached to the ink storage container and configured to supply the ink contained in the containing space to the ink ejection apparatus. The ink storage container includes a base layer configured to surround the containing space and a surface layer formed from a plastic material on the outside of the base layer. A first region in which the base layer is exposed and a second region in which the surface layer is exposed are repeatedly formed in a predetermined direction on a surface of the ink storage container.

Abstract: An ink storage container attachable to and detachable from an apparatus main body of an ink ejection apparatus includes: a storage portion that stores ink, the storage portion including an ink discharge portion capable of discharging the stored ink to an outside of the storage portion; and an information member that stores information capable of being read from the outside. In the ink storage container, the information member is provided in a flexible part of the storage portion and is configured to enable the information to be read in a non-contact manner from the outside and the information member is configured such that the information readable by an optical reading device or an RFID-based reading device. The technology described in this specification have the potential to contribute to the achievement of a sustainable society, such as a decarbonized society/circular society.

Abstract: A liquid storage container for storing a liquid to be supplied to a liquid discharge apparatus includes a cylindrical flow path-forming member in which a flow path is formed, the liquid storage container including: a liquid storage portion which stores a liquid inside and in which is formed an opening through which the liquid to be supplied to the liquid discharge apparatus passes; and an elastic portion which blocks the opening so that a liquid does not leak, the elastic portion including a communication hole configured to allow communication between inside and outside of the liquid storage portion and being configured to be elastically deformable so as to enlarge a cross-sectional area of the communication hole. The communication hole is closed in a state before the flow path-forming member is inserted into the elastic portion.

Abstract: A liquid replenishing container configured to replenish recording liquid to a liquid storage container having a receiving portion of the recording liquid, includes a holding portion that holds recording liquid to be replenished to the liquid storage container; and an injecting portion that has an opening to discharge the recording liquid in the holding portion, and that is inserted into the receiving portion of the liquid storage container, wherein the opening opens so as to face an inner wall of the receiving portion.

Abstract: A liquid cartridge includes a liquid container configured to store a liquid, a lid part configured to cover the liquid container, a liquid holding member stored in the liquid container and configured to hold the liquid, and a projection member connected to the liquid holding member, wherein the liquid holding member has a first surface facing the lid part, wherein the lid part includes an atmosphere communication path that communicates inside and outside of the liquid container, wherein the atmosphere communication path includes an opening that is open to the inside of the liquid container, and wherein the projection member projects from the first surface toward the lid part, and surrounds at least a portion of the opening as viewed from a vertical direction orthogonal to the first surface in which the lid part covers the liquid container.

Abstract: Provided is a liquid container attachable to a printing apparatus and configured to contain a liquid to be supplied to the printing apparatus, including: a container chamber configured to contain the liquid; a supply unit provided on a tip end side in a direction of attachment to be attached to the printing apparatus and configured to connect the container chamber to the printing apparatus; and a liquid holding unit provided to an inner peripheral surface of the supply unit and capable of holding the liquid by using a capillary force, the liquid leaking out in a case of attaching and detaching the liquid container to and from the printing apparatus, in which a length of the liquid holding unit in the direction of attachment of the liquid container is larger than a length of the liquid holding unit in a direction intersecting with the direction of attachment.

Abstract: A recording element substrate includes an ejection port forming member in which an ejection port configured to eject liquid is formed, and a substrate. The substrate includes a liquid supply port that supplies the liquid to the ejection port, a first surface on which the ejection port forming member is placed, and a second surface that is a rear surface of the first surface. The liquid supply port includes a first portion perpendicularly connected to the first surface, and a second portion connected to the first portion. An inner wall of the second portion includes an inclined surface that is inclined toward an inner wall of the first portion such that a width of the second portion is gradually increased toward the second surface. A hydrophilic film is formed at least on the inner wall of the first portion.

Abstract: There is used a container which includes a first member which serves as a lid portion, a second member which serves as a container portion, and resin with which a flow path, which is formed between the first member and the second member when the first member and the second member come into contact with each other, is filled, the resin bonds the first member and the second member to each other by reaching a filling target position after flowing in from an inflow opening to the flow path, and an opening portion exposed to an exterior of the container is provided at a position where the resin having flowed in from the inflow opening flows out beyond the filling target position in the flow path.

Abstract: An object is to provide a liquid container production method capable of hindering the occurrence of wrinkles. The liquid container production method includes: inserting a spout into a bag in which a first film including a non-flat section and a flat second film are welded together; and welding the first film and the second film to the spout. In the welding, a projection provided to a welder presses the second film and the spout, thereby forming a pit at a welded portion where the second film and the spout are welded together.

Abstract: A liquid ejection head includes: a channel member; an ejection substrate being disposed in a recess of the channel member and having a nozzle row of nozzles arranged in a first direction; and a sealing member having a thermosetting resin filled in a predetermined space defined by side and bottom surfaces of the recess and a side surface of the ejection substrate and located upstream of the ejection substrate in a second direction. The sealing member includes: a first sealing portion having a first resin located near the bottom surface of the predetermined space; and a second sealing portion having a second resin located near an ejection surface of the ejection substrate. A coefficient of linear expansion of the first resin is less than that of the second resin, and a specific gravity of the first resin is greater than that of the second resin.

Abstract: A liquid discharge cartridge manufacturing method includes a first step of individually shaping a first shaped member and a second shaped member that form a housing of a liquid discharge cartridge, and a second step of joining the first shaped member and the second shaped member to be bonded to each other with molten resin. The first step includes shaping a wall section in the first shaped member, the wall section forming a recess for accommodating the molten resin, and shaping a projection in the second shaped member, the projection extending such that the projection is located at the outer side of the wall section and adjacent to the wall section, with a predetermined gap being formed between the projection and the wall section, when the first and second shaped members are joined.

Abstract: A liquid cartridge that can easily ensure stable atmospheric communication can be provided, comprises a liquid storage portion configured to store liquid and a lid provided above the liquid storage portion, configured to cover the liquid storage portion. The lid has at least one inner opening on an inner side surface facing the liquid storage portion, a plurality of outer openings on an outer side surface which is a surface opposite the inner side surface and opens into an atmosphere, and an atmosphere communication channel connecting the at least one inner opening and the plurality of outer openings.

Abstract: Provided is a technique which can inspect liquid ejection energy without changing electric wiring on an ejection element substrate of a liquid ejection head or ejecting liquid from the liquid ejection head. A liquid ejection head as an ejection-energy inspection target includes an ejection element substrate having a substrate, a heat generation portion having an electrothermal converter on the substrate, a protective film covering the electrothermal converter, and an organic layer covering the electrothermal converter and the protective film. For this liquid ejection head, an electrical resistance value of the electrothermal converter is acquired as a first measurement result, and the film thickness of a film thickness measurement portion of the ejection element substrate where the protective film is exposed is acquired as a second measurement result. Further, information on ejection energy needed to eject liquid from the ejection port is obtained based on the first and second measurement results.