Abstract: Provided is a liquid discharge head including a discharge unit which includes a plurality of first flow paths; a supply unit which includes a plurality of second flow paths, to which the discharge unit is fixed, and which supplies liquid to the discharge unit; and a sealing member which is sandwiched by the discharge unit and the supply unit and which includes a plurality of third flow paths communicated with the first flow paths and the second flow paths. The sealing member includes a plurality of flow path arrays, each flow path array being constituted of the plurality of third flow paths arranged in a predetermined column direction. The sealing member includes a plurality of positioning holes to engage with the supply unit, the plurality of positioning holes being arranged on both sides of the flow path arrays in an intersecting direction that intersects with the column direction.

Abstract: The present disclosure includes an ink bag having a spout, a container body that accommodates the ink bag, and a nozzle attachable to and detachable from the container body, which has an ink flow path communicating with the spout while being attached to the container body and an opening portion for opening the ink flow path to the outside, the ink flow path is provided with a filter member that can capture foreign matter contained in the ink flowing in from the spout. This can promote reuse of the container body, and the technologies described in this specification have the potential to contribute to the achievement of a sustainable society, such as a decarbonized society/circular society.