Abstract: The three-dimensional shaping device (100) is provided with a layer forming device (10) to form a layer of metal powder (90) on a shaping object, and a laser light irradiation device (20) to irradiate the layer of metal powder (90) formed by the layer forming device (10) with a laser light (25). The laser light (25) to be used in the three-dimensional shaping device (100) has a pulsed output waveform with a frequency of 5 to 200 kHz, a pulse width of 5 to 200 ?s and a peak output of 10 to 500 W. Further, an overlap rate, which is a rate at which irradiation spots on the layer of metal powder (90) by two successive pulses of the laser light (25) overlap with each other, is 50 to 99.9%. Hereby, it is possible to provide a three-dimensional shaping method and a three-dimensional shaping device which can shape a shaping body having a narrower shaping width.

Abstract: A microfabrication method is provided with which it is possible to easily form a fine periodic structure on a surface of any substrate. A glass precursor is applied to a substrate, and the glass precursor is irradiated with short-pulse laser light. By the irradiation with short-pulse laser light, the glass precursor is activated to undergo a thermal reaction, and a fine periodic structure can be easily formed on the surface. Furthermore, by oxidizing the substrate on which the fine periodic structure has been formed, the hue of the surface can be improved while maintaining the fine periodic structure.

Abstract: A microfabrication method is provided with which it is possible to easily form a fine periodic structure on a surface of any substrate. A glass precursor is applied to a substrate, and the glass precursor is irradiated with short-pulse laser light. By the irradiation with short-pulse laser light, the glass precursor is activated to undergo a thermal reaction, and a fine periodic structure can be easily formed on the surface. Furthermore, by oxidizing the substrate on which the fine periodic structure has been formed, the hue of the surface can be improved while maintaining the fine periodic structure.

Abstract: The three-dimensional shaping device (100) is provided with a layer forming device (10) to form a layer of metal powder (90) on a shaping object, and a laser light irradiation device (20) to irradiate the layer of metal powder (90) formed by the layer forming device (10) with a laser light (25). The laser light (25) to be used in the three-dimensional shaping device (100) has a pulsed output waveform with a frequency of 5 to 200 kHz, a pulse width of 5 to 200 ?s and a peak output of 10 to 500 W. Further, an overlap rate, which is a rate at which irradiation spots on the layer of metal powder (90) by two successive pulses of the laser light (25) overlap with each other, is 50 to 99.9%. Hereby, it is possible to provide a three-dimensional shaping method and a three-dimensional shaping device which can shape a shaping body having a narrower shaping width.

Abstract: The three-dimensional shaping device (100) is provided with a powder supply device (10) to supply powder (90) by dropping the powder toward a surface (81) of a workpiece (80) as a shaping object, the surface, for example, being a curved surface. Further, the three-dimensional shaping device (100) is provided with a laser light irradiation device (20) to irradiate a layer of the powder (90) supplied and deposited by the powder supply device (10) with a laser light (25) as an energy beam. In this way, a three-dimensional shaping device and a three-dimensional shaping method, which are capable of shaping a beam structure on a curved surface of a shaping object, are provided.

Abstract: Due to the low suction strength or an unsuitable positional relationship or distance between the suction feed and the oral cavity, conventional extra-oral intake devices exhibit the problem of not being able to fully suck particulate matter and droplets from teeth, shavings from repair products, saliva, bacteria, blood, rinse water, tooth surface cleaning agents, etc., that are dispersed to outside the oral cavity during practice. In order to improve suction strength, the present invention provides an intake device that is equipped with a protruding airflow-regulating member, the top of which is oriented in the direction in which the fluid flows into the opening part of the suction feed, and that can efficiently suck dispersed particulate matter and droplets within a wide range.

Abstract: A hand piece for spraying powder is capable of grinding pellets and generating powder inside the hand piece. The hand piece includes: a pellet housing section for housing pellets; a powder generating section that grinds housed pellets and generates powder, and a spraying port that sprays the powder that has been generated in the powder generating section.

Abstract: Due to the low suction strength or an unsuitable positional relationship or distance between the suction feed and the oral cavity, conventional extra-oral intake devices exhibit the problem of not being able to fully suck particulate matter and droplets from teeth, shavings from repair products, saliva, bacteria, blood, rinse water, tooth surface cleaning agents, etc., that are dispersed to outside the oral cavity during practice. In order to improve suction strength, the present invention provides an intake device that is equipped with a protruding airflow-regulating member, the top of which is oriented in the direction in which the fluid flows into the opening part of the suction feed, and that can efficiently suck dispersed particulate matter and droplets within a wide range.

Abstract: A microfabrication method is provided with which it is possible to easily form a fine periodic structure on a surface of any substrate. A glass precursor is applied to a substrate, and the glass precursor is irradiated with short-pulse laser light. By the irradiation with short-pulse laser light, the glass precursor is activated to undergo a thermal reaction, and a fine periodic structure can be easily formed on the surface. Furthermore, by oxidizing the substrate on which the fine periodic structure has been formed, the hue of the surface can be improved while maintaining the fine periodic structure.

Abstract: A viscoelastic polisher to be used for polishing. The viscoelastic polisher includes a viscoelastic layer provided on a major surface of a base disk and having a hole of a predetermined radius formed in a center portion thereof, and the base disk has a plurality of grooves equiangularly provided in the major surface thereof as extending radially outward from a center portion thereof. This arrangement ensures stable supply of an abrasive liquid, and obviates a need for formation of grooves in the viscoelastic layer.

Abstract: A viscoelastic polisher to be used for polishing. The viscoelastic polisher includes a viscoelastic layer provided on a major surface of a base disk and having a hole of a predetermined radius formed in a center portion thereof, and the base disk has a plurality of grooves equiangularly provided in the major surface thereof as extending radially outward from a center portion thereof. This arrangement ensures stable supply of an abrasive liquid, and obviates a need for formation of grooves in the viscoelastic layer.