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 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: 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 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 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: 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: Provided is a liquid material for forming a three-dimensional object. The liquid material is adapted to harden a powder material for forming a three-dimensional object containing an organic material. The liquid material contains a solvent and a cross-linking agent. A dynamic contact angle of the liquid material over a film made of the organic material is from 20° to 80°.

Abstract: A display device includes a polarizing layer having a polarizing function for reflecting or absorbing light polarized in a stretching direction of a pigment, a first display panel in which the polarizing function is disabled in a first region, a second display panel in which the polarizing function is disabled in a second region, and a light source that emits an illumination light having a polarization direction along the stretching direction or a direction perpendicular to the stretching direction. The first display panel and the second display panel are stacked together to form a display unit. Only the first region is displayed on the display unit by emitting illumination light having a polarization direction along the stretching direction of the first display panel. Only the second region is displayed on the display unit by emitting illumination light having a polarization direction along the stretching direction of the second display panel.

Abstract: A resin composition for solid freeform fabrication includes one or more thermoplastic resins containing a liquid crystal resin having a content rate of from 0.5 to 40 percent by mass to the one or more thermoplastic resins.

Abstract: A powder material for three-dimensional modeling includes a base particle and a resin including a first water soluble resin and a second water soluble resin, wherein a first aqueous solution of the first water soluble resin having a concentration of two percent by mass has a thermally reversible sol-gel phase transition and is gelated at temperatures higher than a first phase transition temperature of the first aqueous solution.

Abstract: A powder material for three-dimensional modeling includes a base particle and a resin covering the base particle, wherein the resin has a first absorption peak in the range of from 1,141 cm?1 to 1,145 cm?1 and a second absorption peak in the range of from 1,089 cm?1 to 1,093 cm?1 in an infrared absorption spectrum and the intensity ratio of the first absorption peak to the second absorption peak is from 0.40 to 0.70.

Abstract: A powder material for three-dimensional modeling includes a base particle and a coverage film including an organic material. The coverage film covers the base particle. The powder material is used for three dimensional modeling and when the coverage film is dissolved in a solvent to prepare a solution and the solution is formed into a coated film on a smooth surface, the coated film has a wetting tension of from 22 mN/m to 28 mN/m.

Abstract: An inkjet recording ink, including: water; a water-soluble organic solvent; a pigment; and a phosphate group-containing copolymer, wherein the phosphate group-containing copolymer contains a structural unit represented by the following General Formula (1) and a structural unit represented by the following General Formula (2): where R1 denotes a hydrogen atom or a methyl group; M+ denotes an alkali metal ion, an organic amine ion, or a hydrogen ion; half or more of M+ in the copolymer is the alkali metal ion or the organic amine ion, the remainder of M+ is the hydrogen ion; n and m each denote an integer of 0 to 6, provided that both of n and m are not 0; and a block of (C2H4O) and a block of (C3H6O) may be exchanged with each other, where R2 denotes a hydrogen atom or a methyl group.

Abstract: A powder for 3D modeling includes a base particle and a resin having a functional group represented by the following Chemical formula 1, where A1 represents O or NH and R1, R2, and R3 each, independently represent CH3, C2H5, C3H7, or C4H9. The base particle is covered with the resin.