An actuator device includes: an actuator including a first element contact; and a wire member including (a) a first contact connected to the first element contact and (b) a first wire configured to conduct with the first contact. A first wide portion is formed at a distal end portion of the first wire at an edge portion of the wire member. The first wide portion is disposed beyond the first element contact in a wire direction of the first wire. The first contact is disposed at a basal end portion of the first wire. The basal end portion is located further from the edge portion of the wire member than the first wide portion. The first contact is connected to the first element contact.

A liquid accommodating body includes a liquid accommodating chamber that accommodates liquid, a pouring port through which the liquid is poured into the liquid accommodating chamber, a visual recognition portion through which a surface of liquid accommodated in the liquid accommodating chamber is visually recognized and which is provided on a side wall forming the liquid accommodating chamber, a partition wall that partitions the liquid accommodating chamber into a pouring port side liquid accommodating chamber into which the liquid is poured through the pouring port and a visual recognition portion side liquid accommodating chamber including the visual recognition portion in a direction intersecting a gravity direction, and a liquid communication portion which is provided between the partition wall and a bottom wall forming the liquid accommodating chamber and through which the pouring port side liquid accommodating chamber and the visual recognition portion side liquid accommodating chamber communicate with each other.

In an embodiment of this invention, a carriage includes the first lever that is operated by an operator to attach or detach a printhead and rotates about the first rotating shaft. The carriage also includes the second lever that rotates about the second rotating shaft parallel to the first rotating shaft and, if the printhead is attached, contacts part of the printhead and presses the printhead in accordance with the rotation. The carriage further includes a spring having one end hung on an end portion of the second lever and the other end hung on part of the carriage. If the printhead is attached, the press force of the spring acts to press the printhead against the carriage in accordance with the rotation of the first lever. If the printhead is detached, no press force acts.

An inkjet printing head 1 includes an actuator substrate, having an ink flow passage that includes a pressure chamber, a movable film formation layer, including a movable film, disposed on the pressure chamber and defining a top surface portion of the pressure chamber, a piezoelectric element 9, formed on the movable film, and a protective substrate 4, bonded to the actuator substrate so as to cover the piezoelectric element 9, and the protective substrate 4 has an ink supply passage 53 in communication with the ink flow passage, and on a surface of the protective substrate 4 at an opposite side from the actuator substrate, an alignment mark 81 is formed in each of a plurality of small regions set by dividing an entire region of the surface.

A liquid discharging head includes a discharge port that discharges a liquid, a pressure chamber that communicates with the discharge port, and an energy generating element that is disposed in the pressure chamber. In the liquid discharging head, the discharge port is provided with a plurality of projections that project towards a central portion of the discharge port from an inner peripheral edge of the discharge port, and an interval between the projections at a location where the projections are closest to each other is 5 m or less.

A liquid supply device and an image recording apparatus that do not cause the tearing of a diaphragm even if abnormal pressure is generated. The objective is solved by a liquid supply device that includes a back-pressure tank and a restriction member. The back-pressure tank is provided between an ink jet head and a pump, and includes a liquid chamber that communicates with an ink passage through a flow port, a gas chamber in which gas is stored, and an elastic diaphragm that isolates the liquid chamber from the gas chamber. The restriction member is disposed on an extension surface of the flow port of an inner wall surface of the liquid chamber, and keeps the elastic diaphragm on the inside of the extension surface in a case in which the elastic diaphragm is sucked into the flow port by pressure that is applied to ink by the pump.

A liquid ejecting head includes a channel member having: a common channel extending in a first direction orthogonal to an up-down direction; and individual channels. Individual channel rows each including the individual channels aligned in the first direction are disposed side by side in a second direction orthogonal to the up-down direction and the first direction. A first pressure chamber and a second pressure chamber overlap in the second direction. A first nozzle included in the first individual channel row and a second nozzle included in the second individual channel row are located on one side in the second direction with respect to the common channel. The first nozzle is located closer to the common channel than the second nozzle is in the second direction, and the first nozzle overlaps with the second pressure chamber in the up-down direction.

A negative pressure regulation valve includes an inflow-side pressure chamber including a liquid inflow hole, an outflow-side pressure chamber including a liquid outflow hole, a communication hole, and a valve member inserted in the communication hole and movable, in accordance with change of pressure inside the outflow-side pressure chamber, to a closing position for closing the communication hole and an opening position for opening the communication hole. The outflow-side pressure chamber includes, as the liquid outflow hole, a first outflow hole formed below the communication hole and a second outflow hole formed above the communication hole. As seen from a communication direction of the communication hole, a first line extending in an outflow direction of liquid from the first outflow hole and a second line extending in an outflow direction of liquid from the second outflow hole do not coincide with each other.