Abstract: A bonded member includes at least two members. The at least two members include a first member and a second member bonded to each other. The first member has a bonded face bonded to the second member. The bonded face has a recessed portion at an outer periphery of the bonded face, to retain an adhesive. The recessed portion is open at the bonded face and an outer peripheral face of the first member. In a plan view from a direction vertical to the bonded face, an outer edge of a bottom face of the recessed portion is disposed at an inner position in an in-plane direction of the bonded face than an outer edge of the outer peripheral face of the first member.

Abstract: An electronic device includes a first substrate that has a drive region in a first surface, and a second substrate that has a second surface that is joined to the first surface by a joining resin portion composed of a photosensitive resin. In the electronic device, a space that houses the drive region is defined between the first surface and the second surface by the joining resin portion, and a joining surface of the joining resin portion joined to the first surface is smaller than a joining surface of the joining resin portion joined to the second surface.

Abstract: A first substrate defines a plurality of pressure generating chambers. The first substrate includes a vibration plate which forms a first surface of the first substrate, and formed with a first through hole. A plurality of piezoelectric elements are provided on the vibration plate. A second substrate is bonded onto at least the first surface of the first substrate. The second substrate is formed with a second through hole communicated with the first through hole. A laminated film includes a coating layer comprised of a resin material. The laminated film is provided on an inner wall face of a communicating portion at which the first through hole and the second through hole are connected.

Abstract: A thermal printer with a mechanism for preventing recording sheet from meandering. In order to perform the mechanism, the thermal printer is provided with a thermal line head, a platen roller and a holding shaft which is perpendicular to the surface of a recording sheet and rotatable about the axis thereof, the holding shaft being engaged with the thermal line head in such a manner that the thermal line head is horizontally swingable about the axis of the holding shaft with the positional relation between the recording sheet and the thermal line head unchanged, and subjected to frictional force to return the thermal line head to its standard position, so that printing operation is correctly carried out all times and the recording sheet is returned to its standard position, that is, the meandering of the recording sheet is prevented. This mechanism also can be performed by providing the thermal printer with a brake shoe engaged with the holding shaft as described above.