Abstract: Provided is a three-dimensional object formation method for forming a three-dimensional object by at least repeating: forming a powder material layer using a powder material for three-dimensional object formation containing a base material coated with an organic material; and hardening a predetermined region of the powder material layer by delivering a hardening liquid to the powder material layer formed in the formation of a powder material layer, where the hardening liquid contains a cross-linking agent cross-linkable with the organic material.

Abstract: A fiber aggregation contains fiber containing a thermoplastic resin, each of the fiber being mutually joined and aligned.

Abstract: A powder for solid freeform fabrication includes a first resin particle and a second resin particle, wherein MFR2 is greater than MFR1 and a ratio of MFR2 to MFR1 is from 2 to 5, where MFR1 represents a melt mass-flow rate (MFR) of the first resin particle and MFR2 represents a melt mass-flow rate of the second resin particle.

Abstract: A resin powder contains a resin, wherein the proportion of fine powder having a number diameter of 40 percent or less of a mean number diameter Mn of the resin powder is 30 percent or less in the resin powder.

Abstract: Provided is a resin powder containing a polyolefin-based resin, wherein the average circularity of the resin powder is 0.950 or greater, a logarithmically converted value Log R of the volume resistivity R of the resin powder is 11.5 or less, and the degree of compression of the resin powder is 1.45 or less. An embodiment where the volume average particle diameter of the resin powder is 10 micrometers or greater but 150 micrometers or less, an embodiment where the resin powder further contains an antistatic agent, an embodiment where the antistatic agent is water-insoluble, and an embodiment where the content of the antistatic agent is 0.5% by mass or greater but less than 20% by mass relative to the total amount of the resin powder are preferable.

Abstract: Provided is a resin powder including first particles containing a polyolefin-based resin, wherein surfaces of the first particles are coated with second particles at an average coating ratio of 0.15 or greater, where the average coating ratio is measured with a Material Development Kit (MDK) at a temperature lower than a melting point of the resin powder for producing a three-dimensional object by 15 degrees C.

Abstract: A first polarization member has a first polarization axis and allows passage of light having a polarization component parallel to the first polarization axis. A second polarization member has a second polarization axis and allows passage of light having a polarization component parallel to the second polarization axis. The first and the second polarization members are arranged such that a direction of the first polarization axis and a direction of the second polarization axis are non-parallel. The first polarization member includes a portion provided with a first pattern that allows passage of light regardless of a direction of a polarization component. The second polarization member includes a portion provided with a second pattern that allows passage of light regardless of a direction of a polarization component. The portion where the first pattern is provided and the portion where the second pattern is provided are filled with optical resins.

Abstract: A reflective polarization film includes a metal vapor deposition layer configured to allow passage of light having a polarization component parallel to a polarization axis and reflect light having a polarization component non-parallel to the polarization axis. By irradiating the reflective polarization film with laser light, a region where the metal vapor deposition layer is sublimated is formed so as to have a shape corresponding to a desired pattern. A polarization direction of the laser light is a direction non-parallel to the polarization axis.

Abstract: A particle for solid freeform fabrication having a columnar form has end surfaces and a side surface, wherein one of the end surfaces partially covers the side surface.

Abstract: Provided is a three-dimensional object formation method for forming a three-dimensional object by at least repeating: forming a powder material layer using a powder material for three-dimensional object formation containing a base material coated with an organic material; and hardening a predetermined region of the powder material layer by delivering a hardening liquid to the powder material layer formed in the formation of a powder material layer, where the hardening liquid contains a cross-linking agent cross-linkable with the organic material.

Abstract: Provided is a three-dimensional object formation method for forming a three-dimensional object by at least repeating: forming a powder material layer using a powder material for three-dimensional object formation containing a base material coated with an organic material; and hardening a predetermined region of the powder material layer by delivering a hardening liquid to the powder material layer formed in the formation of a powder material layer, where the hardening liquid contains a cross-linking agent cross-linkable with the organic material.

Abstract: A switch device includes a display device including a polarization plate including a first polarization layer that transmits a linear polarization component oscillating in a first direction, and a second polarization layer that transmits a linear polarization component oscillating in a second direction, the first and second polarization layers being stacked directly on top of one another so that the first direction is orthogonal to the second direction, a first light source unit that outputs the linear polarization component oscillating in the first direction, and a second light source unit that outputs the linear polarization component oscillating in the second direction, a switch section that performs switching between the light emitting state and the non-light emitting state of the first and second light source units, and an operating section that operates the switch section, wherein the polarization plate is provided in the operating section.

Abstract: A display device includes a first polarizing plate including a first polarization region and a first design region, a second polarizing plate including a second polarization region and a second design region, and a third polarizing plate including a third polarization region. A transmittance of light oscillating in a first direction of the polarization regions is maximized, and the design regions are transparent to light regardless of the oscillation direction of light. The first and second polarizing plates are arranged at a distance from each other along a path of the light, the first direction in the first polarization region and the first direction in the second polarization region are different from each other. The third polarizing plate is arranged such that the first direction in the third polarization region is positioned between the first direction in the first polarization region and the first direction in the second polarization region.

Abstract: A display switching device includes a light source emitting light having a first polarization direction and light having a second polarization direction different from the first polarization direction, a first polarizing plate having a first display region configured to transmit light in the first polarization direction and display a first display mark, and a second polarizing plate having a second display region configured to transmit light in the second polarization direction and display a second display mark. The second polarizing plate is arranged such that the first display region at least partially overlaps with the second display region. At least a part of one of the first display region and the second display region includes a mixed part in which a polarization part with a polarizing function and a non-polarization part without any polarizing function are mixed.

Abstract: A switch device includes a display device including a polarization plate including a first polarization layer that transmits a linear polarization component oscillating in a first direction, and a second polarization layer that transmits a linear polarization component oscillating in a second direction, the first and second polarization layers being stacked directly on top of one another so that the first direction is orthogonal to the second direction, a first light source unit that outputs the linear polarization component oscillating in the first direction, and a second light source unit that outputs the linear polarization component oscillating in the second direction, a switch section that performs switching between the light emitting state and the non-light emitting state of the first and second light source units, and an operating section that operates the switch section, wherein the polarization plate is provided in the operating section.

Abstract: A fiber aggregation contains fiber containing a thermoplastic resin, each of the fiber being mutually joined and aligned.

Abstract: A resin powder contains a resin, wherein the proportion of fine powder having a number diameter of 40 percent or less of a mean number diameter Mn of the resin powder is 30 percent or less in the resin powder.

Abstract: Provided is a resin powder for producing a three-dimensional object, wherein the resin powder has a number-average equivalent circle diameter of 10 micrometers or greater but 150 micrometers or less, and wherein a median in an equivalent circle diameter-based particle size distribution of the resin powder is higher than the average equivalent circle diameter.

Abstract: A powder for solid freeform fabrication includes a first resin particle and a second resin particle, wherein MFR2 is greater than MFR1 and a ratio of MFR2 to MFR1 is from 2 to 5, where MFR1 represents a melt mass-flow rate (MFR) of the first resin particle and MFR2 represents a melt mass-flow rate of the second resin particle.

Abstract: A method for laser-processing a polarizing plate includes forming a region in which polarization characteristics are eliminated at a portion of a polarizing film by irradiation with laser light, using a first protection film bonded to one surface of the polarizing film with a first bonding layer being interposed therebetween, and a second protection film bonded to the other surface of the polarizing film with a second bonding layer being interposed therebetween, and scanning ultrashort pulse laser light from above the first protection film so that the region is irradiated with the light to remove an inner portion from the first protection film to the second bonding layer.