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: Notification is made to a user when mechanical engagement of an ink tank has been ensured such that the user does not stop a mounting operation before completion of mounting of the ink tank. A substrate includes a light emitting unit and a control unit configured to control the light emitting unit in accordance with a conduction state between an electrode and a corresponding electrode. A liquid tank is moved by force, a second engagement unit is locked to a second lock unit, and the liquid tank is mounted into a holder at a mounting completion position. In the movement, after the liquid tank has gone past the mounting completion position and a second engagement unit has shifted to a state of being partially engaged with the second lock unit, the electrodes shift from a non-conductive state to a conductive state.

Abstract: A liquid ejecting apparatus informs a user when an ink tank is substantially mechanically attached so as to prevent an attaching operation from being stopped by a user before completion of attachment of the ink tank. A board is provided with a light emitter, and a control unit for controlling the light emitter according to a conductive state between an electrode and a counterpart electrode. The liquid tank is moved by force P, a second engaging portion is locked to a second locking portion, and then, the liquid tank is attached to a holder at an attachment completion position. The non-conductive state between the electrodes is changed to a conductive state before the second engaging portion engages with the second locking portion, and then, the liquid tank is fixed at the attachment completion position during movement in a reverse direction after the liquid tank passes the attachment completion position.

Abstract: A liquid discharge head including: a liquid discharge member provided with a first supply channel and configured to discharge liquid; a liquid supply member provided with a second supply channel for supplying the liquid to the first supply channel; and a resilient member having a through hole for connecting the first supply channel and the second supply channel and provided between the liquid discharge member and the liquid supply member in contact with the liquid discharge member and the liquid supply member, wherein the resilient member includes a beam portion configured to couple walls that define the through hole.

Abstract: Notification is made to a user when mechanical engagement of an ink tank has been ensured such that the user does not stop a mounting operation before completion of mounting of the ink tank. A substrate includes a light emitting unit and a control unit configured to control the light emitting unit in accordance with a conduction state between an electrode and a corresponding electrode. A liquid tank is moved by force, a second engagement unit is locked to a second lock unit, and the liquid tank is mounted into a holder at a mounting completion position. In the movement, after the liquid tank has gone past the mounting completion position and a second engagement unit has shifted to a state of being partially engaged with the second lock unit, the electrodes shift from a non-conductive state to a conductive state.

Abstract: A liquid ejecting apparatus informs a user when an ink tank is substantially mechanically attached so as to prevent an attaching operation from being stopped by a user before completion of attachment of the ink tank. A board is provided with a light emitter, and a control unit for controlling the light emitter according to a conductive state between an electrode and a counterpart electrode. The liquid tank is moved by force P, a second engaging portion is locked to a second locking portion, and then, the liquid tank is attached to a holder at an attachment completion position. The non-conductive state between the electrodes is changed to a conductive state before the second engaging portion engages with the second locking portion, and then, the liquid tank is fixed at the attachment completion position during movement in a reverse direction after the liquid tank passes the attachment completion position.

Abstract: A liquid discharge head including: a liquid discharge member provided with a first supply channel and configured to discharge liquid; a liquid supply member provided with a second supply channel for supplying the liquid to the first supply channel; and a resilient member having a through hole for connecting the first supply channel and the second supply channel and provided between the liquid discharge member and the liquid supply member in contact with the liquid discharge member and the liquid supply member, wherein the resilient member includes a beam portion configured to couple walls that define the through hole.

Abstract: An inkjet recording head includes: plural element substrates from which ink is ejected; and a flexible wiring substrate which includes a first wiring area, a second wiring area and a bending portion, the first wiring area including plural openings in which the element substrates are placed and which includes, in the periphery thereof, electrode terminals electrically connected to the element substrates, and the bending portion being bent between the first wiring area and the second wiring area. The flexible wiring substrate includes a slit which extends between the plural openings and reaches the bending portion or a position further than the bending portion from an end portion of the flexible wiring substrate on the side on which the first wiring area is provided, at a position opposite to the bending portion.

Abstract: The present invention provides an ink tank in which ink is unlikely to leak from an air communication hole even with variation in the internal pressure of the ink tank or an external impact on the ink tank. Specifically, ink attached to a rib or trapped in a groove may disperse to the vicinity of a projecting portion. In this case, first, a first groove is provided at a predetermined distance from the projecting portion, enabling a reduction in the possibility that the ink disperses from the groove or a remoter area to the projecting portion. Second, even if the dispersing ink enters an area surrounded by the groove, a second groove formed in the area allows the dispersing ink to be trapped therein.

Abstract: The present invention provides an ink tank in which ink is unlikely to leak from an air communication hole even with variation in the internal pressure of the ink tank or an external impact on the ink tank. Specifically, ink attached to a rib or trapped in a groove may disperse to the vicinity of a projecting portion. In this case, first, a first groove is provided at a predetermined distance from the projecting portion, enabling a reduction in the possibility that the ink disperses from the groove or a remoter area to the projecting portion. Second, even if the dispersing ink enters an area surrounded by the groove, a second groove formed in the area allows the dispersing ink to be trapped therein.

Abstract: The present invention provides an ink tank in which ink is unlikely to leak from an air communication hole even with variation in the internal pressure of the ink tank or an external impact on the ink tank. Specifically, ink attached to a rib or trapped in a groove may disperse to the vicinity of a projecting portion. In this case, first, a first groove is provided at a predetermined distance from the projecting portion, enabling a reduction in the possibility that the ink disperses from the groove or a remoter area to the projecting portion. Second, even if the dispersing ink enters an area surrounded by the groove, a second groove formed in the area allows the dispersing ink to be trapped therein.

Abstract: A printing head includes a printing element substrate that is hard to be deformed even if the printing head falls by mistake. The printing head comprises element substrate in which an energy generating element for generating energy used for ejecting ink is provided, a first sheet-shaped portion to which the element substrate is provided, a second sheet-shaped portion provided away from the first sheet-shaped portion at an opposite side to a direction of ejecting the ink in relation to the first sheet-shaped portion, and a sheet-shaped wall member connecting the first sheet-shaped portion to the second sheet-shaped portion, wherein the wall member has a thickness of a portion connected to the second sheet-shaped portion, which is larger than a thickness of a portion connected to the first sheet-shaped portion.

Abstract: A printing head, which can suppress the occurrence of cracks in a printing element substrate, even if accidentally dropped, includes the printing element substrate, an ink flow passage and a sheet-shaped portion comprising a rectangular major surface. A rear surface side of the major surface of the sheet-shaped portion is provided with a space formed separately from the ink flow passage. A surface adjacent to the major surface is provided with an opening of the space formed therein, and the sheet-shaped portion is provided with a concave portion formed on the rear surface side of two regions between the printing element substrate and two corner portions arranged proximate to the opening.

Abstract: An ink jet recording head includes a recording element substrate including an ejection outlet array consisting of a plurality of arranged ejection outlets for ejecting ink, a plurality of heat generating elements, provided correspondingly to the ejection outlets, for generating thermal energy for ejecting the ink, and a supply port, formed along the ejection outlet array in an elongated hole-like shape, for supplying the ink to the ejection outlets; and a supporting member, having a supply flow passage communicating with the supply port, for supporting the recording element substrate. The supporting member is provided with at least two beams each extending over an opening of the supply flow passage in a widthwise direction of the supply flow passage and having a width W with respect to a longitudinal direction of the supply flow passage.

Abstract: There is provided a printing head, enabling to suppress the occurrence of cracks in a printing element substrate, even if the printing head is erroneously fallen. The printing head comprises: a printing element substrate, an ink flow passage and a sheet-shaped portion comprising a rectangular major surface. A rear surface side of the major surface of the sheet-shaped portion is provided with a space formed separately from the ink flow passage. A surface adjacent to the major surface is provided with an opening of the space formed therein, and wherein the sheet-shaped portion is provided with a concave portion formed on the rear surface side of two regions between the printing element substrate and two corner portions arranged proximate to the opening in the major surface.

Abstract: There is provided a printing head in which a printing element substrate is hard to be deformed even if the printing head falls by mistake. The printing head comprises an element substrate in which an energy generating element for generating energy used for ejecting ink is provided, a first sheet-shaped portion to which the element substrate is provided, a second sheet-shaped portion provided away from the first sheet-shaped portion at an opposite side to a direction of ejecting the ink in relation to the first sheet-shaped portion, and a sheet-shaped wall member connecting the first sheet-shaped portion to the second sheet-shaped portion, wherein the wall member has a thickness of a portion connected to the second sheet-shaped portion, which is larger than a thickness of a portion connected to the first sheet-shaped portion.

Abstract: The present invention provides an ink tank in which ink is unlikely to leak from an air communication hole even with variation in the internal pressure of the ink tank or an external impact on the ink tank. Specifically, ink attached to a rib or trapped in a groove may disperse to the vicinity of a projecting portion. In this case, first, a first groove is provided at a predetermined distance from the projecting portion, enabling a reduction in the possibility that the ink disperses from the groove or a remoter area to the projecting portion. Second, even if the dispersing ink enters an area surrounded by the groove, a second groove formed in the area allows the dispersing ink to be trapped therein.

Abstract: An ink jet recording head is constituted by a recording element substrate including an ejection outlet array consisting of a plurality of arranged ejection outlets for ejecting ink; a plurality of heat generating elements, provided correspondingly to the ejection outlets, for generating thermal energy for ejecting the ink; and a supply port, formed along the ejection outlet array in an elongated hole-like shape, for supplying the ink to the ejection outlets; and a supporting member, having a supply flow passage communicating with the supply port, for supporting the recording element substrate. The supporting member is provided with at least two beams each extending over an opening of the supply flow passage in a widthwise direction of the supply flow passage and having a width W with respect to a longitudinal direction of the supply flow passage.