Abstract: Ink is circulated through a circulation flow path between a print head and an ink tank. Detection operation for detecting an ink ejection state in an ejection opening in the print head is performed. The ink circulation and the detection operation are simultaneously performed by performing the detection operation in response to a start of the ink circulation.

Abstract: As a thermoplastic resin used as a matrix resin for a fiber-reinforced composite material, a thermoplastic resin having a high glass transition temperature in spite of having a low resin viscosity during molding is provided. Provided are a two-liquid curable composition for forming a thermoplastic matrix resin, the two-liquid curable composition containing an active hydrogen component containing an alkylthio group-containing aromatic diamine (A) and a diisocyanate component containing at least one kind of diisocyanate (B) selected from the group consisting of aliphatic diisocyanates, alicyclic diisocyanates, and modified forms of aliphatic diisocyanates and alicyclic diisocyanates, a matrix resin for a fiber-reinforced composite material, the matrix resin being a thermoplastic resin containing a reaction product of the active hydrogen component and the diisocyanate component, and a fiber-reinforced composite material containing the matrix resin and reinforcing fiber.

Abstract: Ink is circulated through a circulation flow path between a print head and an ink tank. Detection operation for detecting an ink ejection state in an ejection opening in the print head is performed. The ink circulation and the detection operation are simultaneously performed by performing the detection operation in response to a start of the ink circulation.

Abstract: In order to obtain a desirable sensation of pressing upon a touch input unit, this tactile feedback device is configured so as to comprise a case body, a touch input unit which is pressed toward the inner side of the case body by a touch operation, a vibration actuator which is fixed to the touch input unit so as to be integrated therewith and which vibrates according to the touch operation, and an elastic support member which supports the touch input unit on the case body, where the elastic support member is extended along a direction which intersects with a pressing direction P in which the touch operation is performed, with one part of the elastic support member in said extension direction being fixed to the touch input unit and another part thereof in said extension direction being fixed to the case body.