Abstract: A drawing system according to an embodiment of the present disclosure includes a light source section and a scanning section. The light source section generates a plurality of laser light beams having wavelengths that are different from each other and each correspond to an absorption wavelength of a photothermal conversion agent included in a recording medium. The scanning section scans a surface of the recording medium with the plurality of laser light beams in a state in which irradiation spots of the plurality of laser light beams are arranged side by side at predetermined intervals in a direction orthogonal to or obliquely intersecting with a scanning direction of the plurality of laser light beams.

Abstract: A bonding device for joining together a first member (3), an intermediate member (4), and a second member (3) which are layered as a laminated assembly includes a probe (12, 41), an anvil (11, 11b, 11c, 11d), a shoulder member (13,13a, 61,64,68), a drive mechanism (14) configured to rotate the probe around the central axial line and move the probe toward and away from the second member along the central axial line, and an electric power supply (15) electrically connected to the anvil and the shoulder member to conduct electric current through the laminated assembly via the anvil and the shoulder member.

Abstract: A friction stir welding device includes: a probe capable of pressing a welding target part of a workpiece while rotating; a shoulder externally surrounding an outside of the probe, on a plane intersecting a rotation axis of the probe; a shoulder attachment member provided with the shoulder; and a flow path formed at a contact part between the shoulder and the shoulder attachment member and adapted to allow a cooling medium to flow therethrough.

Abstract: A friction stir welding apparatus includes a probe, a shoulder, a recess part, and an annular member. The probe is pressed to a joint part of a plurality of joined members while being rotated. The shoulder is formed so as to surround the probe at an outside in a radial direction with respect to a rotation axis of the probe. The recess part is formed on at least one of an outer circumference of the probe and an inner circumference of the shoulder. The annular member is fitted to the recess part.

Abstract: A bonding device for joining together a first member (3), an intermediate member (4), and a second member (3) which are layered as a laminated assembly includes a probe (12, 41, 52), an anvil (111, 121), an electric conductor configured to come into contact with the second surface of the laminated assembly, the electric conductor being either the probe or a shoulder member (13, 13a, 61, 64, 68) provided with a through hole for receiving the probe, and a shoulder contact surface configured to abut against the second surface, a drive mechanism (14) configured to rotate the probe around the central axial line and move the probe toward and away from the second member along the central axial line, and an electric power supply (15) electrically connected to the anvil and the probe to conduct electric power through the laminated assembly via the anvil and the probe.

Abstract: A bonding device for joining together a first member (3), an intermediate member (4), and a second member (3) which are layered as a laminated assembly includes a probe (12, 41, 52), an anvil (11), a drive mechanism (14) configured to rotate the probe around the central axial line and move the probe toward and away from the second member along the central axial line, and an electric power supply (15) electrically connected to the anvil and the probe to conduct electric current through the laminated assembly via the anvil and the probe.

Abstract: A bonding device for joining together a first member (3), an intermediate member (4), and a second member (3) which are layered as a laminated assembly includes a probe (12, 41), an anvil (11, 11b, 11c, 11d), a shoulder member (13,13a, 61,64,68), a drive mechanism (14) configured to rotate the probe around the central axial line and move the probe toward and away from the second member along the central axial line, and an electric power supply (15) electrically connected to the anvil and the shoulder member to conduct electric current through the laminated assembly via the anvil and the shoulder member.

Abstract: Disclosed is a method for separating a first member (1) and a second member (2) joined to each other comprising the steps of placing a clamp ring (14) on the surface of the first member, plunging a rotating probe (17) having a screw thread on a peripheral surface thereof into the surface of the first member through a through hole (10) of the clamp ring until a tip end of the probe reaches beyond an interface between the first member and the second member, the screw thread being directed so as to lift material of the bonded part away from the second member as a lifted part. The two members can be rejoined to each other by collapsing the lifted part into a bonded part once again by using a rotating probe and a clamp ring.

Abstract: A welded structure includes a first workpiece (11), a second workpiece (12), a bonded part (28) formed between the first workpiece and the second workpiece by plastically displaced materials of the first workpiece and the second workpiece, and a hooking portion (29) having a base end embedded in the second workpiece, and a tip end extending into the first workpiece, the hooking portion extending radially outwardly and upward along an outer periphery of the bonded part. A device for forming such a structure includes a clamp ring (18) which is provided with a central recess (25) in a part of a contact surface (24) thereof located around a through hole (19).

Abstract: A friction stir welding apparatus includes a probe, a shoulder, a plurality of air chambers, and a communication part. The probe is pressed to a joint part of a plurality of joined members while being rotated. The shoulder is formed to surround the probe. The plurality of air chambers are formed between an outer surface of the probe and an inner surface of the shoulder. The communication part causes the plurality of air chambers to communicate with each other and is formed such that a distance between the probe and the shoulder is smaller than those of the plurality of air chambers.

Abstract: A friction stir welding apparatus includes a probe, a shoulder, a recess part, and an annular member. The probe is pressed to a joint part of a plurality of joined members while being rotated. The shoulder is formed so as to surround the probe at an outside in a radial direction with respect to a rotation axis of the probe. The recess part is formed on at least one of an outer circumference of the probe and an inner circumference of the shoulder. The annular member is fitted to the recess part.