Abstract: A liquid ejection head includes a printing element board having an ejection surface in which an ejection orifice array is formed to eject liquid; and a protective member having an opening corresponding to the ejection orifice array, wherein the shape of the opening is an elongate shape having a longitudinal direction and a transverse direction in the case of viewing from the ejection surface, the opening has a first side surface parallel to the longitudinal direction and a second side surface parallel to the transverse direction, and the protective member is fixed to the ejection surface such that the first side surface has an inclination angle with the ejection surface.

Abstract: A liquid discharge head includes a discharge element substrate including a discharge port array formed along a first direction, a support member configured to support the discharge element substrate, and a reference member configured to position the discharge element substrate with respect to a predetermined portion, wherein the reference member includes at least three reference members, wherein the support member includes, as a pressed portion configured to receive a force for pressing the predetermined portion, at least three pressed portions, and wherein a triangle formed by connecting reference points defined by the three reference members has a center of gravity inside a triangle formed by connecting the three pressed portions.

Abstract: A cutting device includes: a holding member which holds a sheet-shaped object to be cut; a cutter which cuts the object to be cut by changing the position of a blade relative to the object to be cut along the object to be cut in such a state that the blade is cut into the object to be cut; a pressing force applying unit which applies a pressing force to the cutter in contact with the object to be cut; a relative position changing unit which changes the position of the blade of the cutter relative to the object to be cut held by the holding member; and a processor which controls the pressing force applying unit to reduce the pressing force applied to the cutter by the pressing force applying unit along with a change in the position of the blade of the cutter relative to the object to be cut by a predetermined distance or for a predetermined time after the pressing force is applied to the cutter.

Abstract: A signal control apparatus is connected to a plurality of traffic signals located on a road with a plurality of intersections having travel lanes with designated traffic classifications. The signal control apparatus comprises: means for detecting the number of vehicles staying in the travel lane or lanes of the same traffic classification among the travel lanes of the plurality of intersections; means for determining whether or not to extend or reduce signaling time for permitting traffic of the traffic classification of the travel lane or lanes based on the number of vehicles staying in the travel lane or lanes of the same traffic classification at the plurality of intersections and means for adjusting split of the plurality of traffic signals based on a result of the determination so as to extend or reduce the signaling time.

Abstract: A developing device includes: a developing device body including a vent opening that releases internal pressure, and a filter member including a filter that closes the vent opening, the filter member detachably attached to the developing device body; wherein the filter member is subjected to an attaching operation and a detaching operation, relative to the developing device body, in a state where an inner surface of the filter is in a predetermined first posture with the inner surface facing upward; and wherein the filter member is held on the developing device body in a state where the inner surface of the filter is in a predetermined second posture different from the first posture.

Abstract: A protection of a liquid ejection head with capping in a simplified manner is provided. A liquid ejection head is a liquid ejection head configured to be attachable to and detachable from a liquid ejection apparatus. This liquid ejection head includes a holding member capable of holding a cap member configured to protect a liquid ejection surface.

Abstract: An ink jet recording method including ejecting an aqueous ink from a first ejection port, and ejecting, from a second ejection port, an aqueous reaction liquid containing a reactant that reacts with the aqueous ink. The liquid ejection apparatus includes an element substrate having the second ejection port configured to eject the aqueous reaction liquid, a pressure chamber, and an energy-generating element, an upstream channel r, and a downstream channe, and the element substrate has a face configured to face the record medium in an ejection direction of the aqueous reaction liquid, wherein the method further including ejecting the aqueous reaction liquid from the second ejection port which is located closer to the pressure chamber than the face, and flowing the aqueous reaction liquid from the upstream channel to the downstream channel through the pressure chamber.

Abstract: An object is to provide a liquid ejection head capable of suppressing corrosion. The liquid ejection head attachable to and detachable from a liquid ejection apparatus comprises a liquid ejection unit capable of ejecting liquid and a support member capable of supporting the liquid ejection unit. In the liquid, a predetermined component is includes. In the support member, metal is included. The surface of the support member is covered with an oxide cover layer having a thickness of 1 ?m or more provided by predetermined treatment.

Abstract: Provided is a liquid ejection head and a method for manufacturing the liquid ejection head, in which a capacitor can be disposed near an element substrate without increasing the size of the ejection head. To this end, a side surface of a support member includes a concave portion at a position facing an electronic component, the side surface intersecting with a support surface where the element substrate is supported.

Abstract: A flexible printed circuit board whose end part side is connected to a print element substrate capable of ejecting ink using a print element, so as to be capable of transmitting a signal from a control part of a printing apparatus to the print element substrate via wiring and to be capable of transmitting a signal from the print element substrate to the control part via the wiring, wherein a side part side of high-potential wiring includes at least one of a regulation part that regulates penetration of ink and a wiring part that is configured with low-potential ground wiring and low-potential liquid signal line whose signal value transmitted by the control part or operation based on a signal is monitored.

Abstract: Included are: a substrate configured to form a channel for a liquid to be ejected; an ejection port formation member configured to form an ejection port, the liquid having passed through the channel being ejected via the ejection port; a cover member configured to bond to the ejection port formation member at an opposite side to the substrate via an adhesive; and a thin film formed on a face of the cover member, the face being on a side where the cover member is bonded to the ejection port formation member, the thin film containing silicon carbide, or any of carbon-containing silicon oxide, silicon nitride, and silicon oxynitride.

Abstract: A liquid ejection head includes a print element substrate having an ejection port forming member including an ejection surface on which a plurality of ejection port arrays for ejecting liquid are formed and a protection member having an opening corresponding to one of the ejection port arrays, the protection member is provided with at least one recessed portion at an end parallel to a direction of the plurality of ejection port arrays in a direction orthogonal to the plurality of ejection port arrays and a projection portion projecting in the direction orthogonal to the plurality of ejection port arrays, the projection portion is provided inside the at least one recessed portion, and the ejection port forming member has a corresponding recessed portion corresponding to the projection portion in the direction orthogonal to the plurality of ejection port arrays.

Abstract: A first sensor detects a vehicle present in a lane in which a vehicle entering an intersection from a first direction is able to cross an opposite lane and turn right or left, and a vehicle entering the lane. A second sensor measures a flow of traffic of an oncoming vehicle that travels in an opposite lane from a second direction, enters the intersection, and passes through the intersection. Traffic condition acquisition means acquires a traffic condition including a speed of the oncoming vehicle based on sensor information obtained from the second sensor. Traffic light control means controls a timing of a signal indication for facilitating the right turn or the left turn in signal indications of a first traffic light and a second traffic light, based on sensor information obtained from the first sensor and the acquired traffic condition.

Abstract: A liquid ejection head includes a liquid ejection part configured to eject a liquid; and a guide part provided upstream of the liquid ejection part with respect to a conveying direction of a recording medium and configured to guide the front end of the recording medium conveyed to the liquid ejection part. The guide part has an inclined surface inclined so as to be more spaced apart from a conveyance path for the recording medium as the inclined surface is more distant from the liquid ejection part.

Abstract: There is provided a liquid ejection head including: a printing element board having an ejection surface in which an ejection orifice array is formed to eject liquid; and a protective member having an opening corresponding to the ejection orifice array, wherein the shape of the opening is an elongate shape having a longitudinal direction and a lateral direction in the case of viewing from the ejection surface, the opening has a first side surface parallel to the longitudinal direction and a second side surface parallel to the transverse direction, and the protective member s fixed to the ejection surface such that the first side surface has a first inclination angle with the ejection surface.

Abstract: A liquid ejection head according to the present disclosure includes: a printing element substrate including an ejection surface provided with a first ejection orifice array in which an ejection orifice configured to be capable of ejecting a liquid is arranged in plurality in an array direction and a second ejection orifice array arranged in a direction intersecting with the array direction and the first ejection orifice array; and a protective member provided with a first opening corresponding to the first ejection orifice array and a second opening corresponding to the second ejection orifice array, wherein the protective member is arranged adjacent to the ejection surface of the printing element substrate via an adhesive arranged between the first ejection orifice array and the second ejection orifice array.

Abstract: Provided are a liquid ejection head and a liquid ejection apparatus that can suppress a deterioration of the printing quality. To this end, in the liquid ejection head, as a reference member, a first reference member and a second reference member that are provided at one end portion in a second direction crossing a first direction in which ejection ports are arrayed so as to be in different positions in the first direction, and a third reference member that is provided at the other end portion in the second direction so as to be between, in the first direction, the first reference member and the second reference member are provided.

Abstract: A liquid ejection head including a recording element substrate configured with a liquid ejection port, the liquid ejection head including: a first positioning member configured with a first positioning part including a recess portion opening in a direction of liquid ejection; and a second positioning member configured with a second positioning part, which includes a groove portion opening in the direction of liquid ejection and extending towards the first positioning member, and a third positioning part, which includes a flat plane portion substantially parallel to the recording element substrate.

Abstract: A signal control apparatus is connected to a plurality of traffic signals located on a road with a plurality of intersections having travel lanes with designated traffic classifications. The signal control apparatus comprises: means for detecting the number of vehicles staying in the travel lane or lanes of the same traffic classification among the travel lanes of the plurality of intersections; means for determining whether or not to extend or reduce signaling time for permitting traffic of the traffic classification of the travel lane or lanes based on the number of vehicles staying in the travel lane or lanes of the same traffic classification at the plurality of intersections and means for adjusting split of the plurality of traffic signals based on a result of the determination so as to extend or reduce the signaling time.