A printing system has a print head shuttle containing a print head mounted on a print guide rail, a support shuttle containing support electronics for the print head mounted on a support guide rail adjacent and parallel to the print guide rail, and at least one electronic signal-carrying cable connected between the support electronics and the print head.

A printing system has a print head shuttle containing a print head mounted on a print guide rail, a support shuttle containing support electronics for the print head mounted on a support guide rail adjacent and parallel to the print guide rail, and at least one electronic signal-carrying cable connected between the support electronics and the print head.

In an embodiment of this invention, a carriage includes a first lever that is operated by an operator to attach or detach a printhead and rotates about a first rotating shaft. The carriage also includes a second lever that rotates about a 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.

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.

A liquid ejection head that is compact and whose reliability of an electrical connection portion is high includes a plurality of sets of element substrates in which a plurality of ejection elements ejecting a liquid of the same type is arrayed and a plurality of sets of electrical wiring members for supplying electric power to the element substrates. Each element substrate is arrayed in a second direction inclined with respect to a first direction in which the plurality of ejection elements is arrayed. Each electrical wiring member is connected to a terminal arranged at one end portion of the corresponding element substrate and extends in a third direction intersecting the first direction and the second direction.