Abstract: A method of producing a toner, the method comprising: a melt-kneading step of melt-kneading a mixture A comprising a binder resin, and a material to be dispersed over the binder resin to yield a kneaded product, wherein the mixture A comprises 1.0 to 10.0 parts by mass of water to 100.0 parts by mass of the binder resin and the material to be dispersed in total, the water comprised in the mixture A comprises bubbles comprising ultrafine bubbles having a particle diameter of not more than 1000 nm, and the number of the ultrafine bubbles comprised in the water comprised in the mixture A is at least 1.0×104 per milliliter.

Abstract: In the image processing system according to the present invention, the data acquisition unit acquires a captured image showing a loading/unloading target of a transporting material of a work machine. The area-specifying unit specifies an area including the loading/unloading target from the captured image. The loading/unloading target-specifying unit specifies at least one predetermined surface of the loading/unloading target from the area including the loading/unloading target.

Abstract: In the image processing system according to the present invention, the data acquisition unit acquires a captured image showing a loading/unloading target of a transporting material of a work machine. The area-specifying unit specifies an area including the loading/unloading target from the captured image. The loading/unloading target-specifying unit specifies at least one predetermined surface of the loading/unloading target from the area including the loading/unloading target.

Abstract: A transport object specifying device of a work machine includes an image acquisition unit, a drop target specifying unit, a three-dimensional data generation unit, and a surface specifying unit. The image acquisition unit acquires a captured image showing a drop target of the work machine in which a transport object is dropped. The drop target specifying unit specifies a three-dimensional position of at least part of the drop target based on the captured image. The three-dimensional data generation unit generates depth data, which is three-dimensional data representing a depth of the captured image, based on the captured image. The surface specifying unit specifies a three-dimensional position of a surface of the transport object in the drop target by removing, from the depth data, a part corresponding to the drop target based on the three-dimensional position of the at least part of the drop target.

Abstract: A ball screw device includes: a threaded shaft; a nut; multiple first balls rollably arranged on a helical raceway composed of a helical groove of the threaded shaft and a helical groove of the nut; an inner ring raceway groove formed on an outer circumferential surface of one axial end of the threaded shaft; an outer ring having an outer ring raceway groove that faces the inner ring raceway groove; and multiple second balls rollably arranged between the inner ring raceway groove and the outer ring raceway groove. The ball screw device converts rotation of the threaded shaft into linear motion of the nut through the first balls rolling on the helical raceway while being subjected to a load. The outer ring has a rolling element insertion hole penetrating from its outer circumferential surface to the outer ring raceway groove and a lid configured to cover the rolling element insertion hole. An inner surface of the lid is formed into a concave shape to serve as part of the outer ring raceway groove.