Abstract: A robot system includes a first robot and a second robot, and the second robot has a base, a shaft provided translationally along an axis direction of a first axis on the base, and an arm provided rotatably with respect to the shaft, and the first robot can perform work on a work object that can be carried by the second robot.

Abstract: Provided is an ink connection needle increasing the flow speed of ink between a cartridge and an ink tank. The ink connection needle is connected to a cartridge provided with an ink container, a connection body connected to the ink container, and a sealing member that seals the connection body, such that one end of the ink connection needle is detachably connected to a connection port of the connection body, the other end is connected to an ink flow path, the ink connection needle including: a base end portion connected to the ink flow path a virtual axial line passing through a center of the ink communication port is inclined relative to an axial line in which a radial center of the leading end portion is an axial center.

Abstract: A robot system includes a first robot and a second robot, and the second robot has a base, a shaft provided translationally along an axis direction of a first axis on the base, and an arm provided rotatably with respect to the shaft, and the first robot can perform work on a work object that can be carried by the second robot.

Abstract: A method for producing a flow path member including a laser processing step for forming the flow path member by laser processing by cutting a base plate, the laser processing step includes: a first cutting step for cutting a region to be formed as the flow path member by laser processing without separating the region from the base plate; and a second cutting step for cutting the region to be formed as the flow path member by laser processing to separate the region from the base plate, wherein the first cutting step is performed while the region to be formed as the flow path member is not supported, and the second cutting step is performed while the region to be formed as the flow path member is supported.

Abstract: Removable water-borne urethane resin coating composition comprising polyurethane resin containing carboxyl groups and/or carboxylate groups and polyvalent metal complex as a cross-linking agent and method for removing the coating formed by using the removable water-borne urethane resin coating composition which comprises treating said coating with a ligand containing alkaline solution and removing the coating.The coating formed by using the composition is superior in water resistance, recoatability, detergent resistance, black heel mark resistance, abrasion resistance and service life.