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: A novel storage device is provided. The storage device includes a first wiring, a second wiring, and a first memory cell. The first memory cell includes a first transistor and a first magnetic tunnel junction device. One of a source or a drain of the first transistor is electrically connected to a first wiring. The other of the source or the drain of the first transistor is electrically connected to one terminal of the first magnetic tunnel junction device. Another terminal of the first magnetic tunnel junction device is electrically connected to the second wiring. The first transistor includes an oxide semiconductor in its channel formation region.

Abstract: A paper-made container, in which it is unlikely to feel the heat at the time of holding the container with a hand and generation of poor appearance due to excessive expansion is prevented, without increasing the thickness of an expanded insulating layer and not resulting in a corresponding deterioration of transporting efficiency, and a method for preparing the paper-made container are provided. The paper-made container of the present invention comprises a container main body consisting of a barrel portion and a bottom plate portion, and an expanded insulating layer consisting of an expanded portion and an expansion-inhibited portion, provided on the side of the outer surface of the barrel portion, in which the expanded insulating layer is formed by heating a thermoplastic resin layer having an expansion inhibiting ink-coated portion, and the ratio of the thickness of the expansion-inhibited portion to the thickness of the expanded portion is 25% or less.

Abstract: A paper-made container, in which it is unlikely to feel the heat at the time of holding the container with a hand and generation of poor appearance due to excessive expansion is prevented, without increasing the thickness of an expanded insulating layer and not resulting in a corresponding deterioration of transporting efficiency, and a method for preparing the paper-made container are provided. The paper-made container of the present invention comprises a container main body consisting of a barrel portion and a bottom plate portion, and an expanded insulating layer consisting of an expanded portion and an expansion-inhibited portion, provided on the side of the outer surface of the barrel portion, in which the expanded insulating layer is formed by heating a thermoplastic resin layer having an expansion inhibiting ink-coated portion, and the ratio of the thickness of the expansion-inhibited portion to the thickness of the expanded portion is 25% or less.

Abstract: A driving shaft includes yokes at both its ends and an intermediate slidable portion composed of a male shaft member and a female shaft member fitted with each other by means of splines. The male shaft member includes a hollow shaft member having an inner diameter larger than the outer diameter of one end of the female shaft member on the side of the male shaft member, and a splined male member having a splined slidable portion to be fitted in the splined hole of the female shaft member and a fixing portion fitted in the hollow shaft member. An elastic body interposed between the inner surface of the hollow shaft member and the outer surface of the fixing portion to fix the splined male member to the hollow shaft member. In producing such a driving shaft, before fitting the splined male member in the hollow shaft member, a resin coating is applied to either the inner surface of the hollow shaft member or the fixing portion of the splined male member.