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: 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 solid freeform fabrication material set includes a material A for solid freeform fabrication and a material B for solid freedom fabrication. The material A includes a polymerization initiator A and at least one of an organic particle and an inorganic particle. The material B includes a polymerizable compound B.

Abstract: A material set for manufacturing a glass object includes a powder material including glass and a first water soluble resin; and a liquid material including water and a second water soluble resin having a mass average molecular weight of less than 50,000.

Abstract: Provided is a three-dimensional object formation powder material used for three-dimensional object formation of forming a three-dimensional object by stacking up a plurality of powder material layers each bound by a resin and having a predetermined shape. The three-dimensional object formation powder material contains particles in which a plurality of cores are fixed by a water-soluble resin.

Abstract: An active energy ray image forming apparatus containing a head, a heating mechanism disposed inside the head, and a storing part configured to accommodate a non-polymerizable synthetic resin and a mono-functional monomer containing a single unsaturated ethylene double bond. An active energy ray image forming apparatus, containing a head, a heating mechanism disposed inside the head, and a storing part configured to accommodate a non-polymerizable synthetic resin and a mono-functional monomer containing a single unsaturated ethylene double bond, where the heating mechanism is heated to 60° C. when ink is discharged.

Abstract: An active energy ray image forming apparatus containing a head, a heating mechanism disposed inside the head, and a storing part configured to accommodate a non-polymerizable synthetic resin and a mono-functional monomer containing a single unsaturated ethylene double bond. An active energy ray image forming apparatus, containing a head, a heating mechanism disposed inside the head, and a storing part configured to accommodate a non-polymerizable synthetic resin and a mono-functional monomer containing a single unsaturated ethylene double bond, where the heating mechanism is heated to 60° C. when ink is discharged.

Abstract: A solid freeform fabrication powder material includes a metal particle, and a water-soluble organic material particle. The water-soluble organic material particle accounts for 2-18 percent by volume of the solid freeform fabrication powder material and the water-soluble organic material particle has a volume average particle diameter of 3-15 ?m.

Abstract: An active energy ray curable composition includes a non-polymerizable resin; and polymerizable compounds comprising a mono-functional monomer having a single polymerizable unsaturated ethylene double bond, wherein the following relations are satisfied: ?Tg=|Tgp?Tgm}?19 degrees C., where Tgp represents a glass transition temperature of the non-polymerizable resin and Tgm represents a glass transition temperature of a homopolymer of the mono-functional monomer, TgH?10 degrees C., where TgH represents the higher of Tgp and Tgm, and TgL?40 degrees C., where TgL represents the lower of Tgp and Tgm.

Abstract: A solid freeform fabrication material set includes a material A for solid freeform fabrication and a material B for solid freedom fabrication. The material A includes a polymerization initiator A and at least one of an organic particle and an inorganic particle. The material B includes a polymerizable compound B.

Abstract: A material set for manufacturing a glass object includes a powder material including glass and a first water soluble resin; and a liquid material including water and a second water soluble resin having a mass average molecular weight of less than 50

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 toner including a non-crystalline polyester resin and a crystalline polyester resin, wherein a tetrahydrofuran soluble component of the non-crystalline polyester resin has a weight-average molecular weight of 3,000 to 8,000 measured by gel permeation chromatography, and wherein the toner has a glass transition temperature A before an extraction process of the toner with methanol and a glass transition temperature B after the extraction process of the toner with methanol, and a difference between A and B (B?A) is 2.0° C. or less.

Abstract: An active energy ray curable composition includes a non-polymerizable resin; and polymerizable compounds comprising a mono-functional monomer having a single polymerizable unsaturated ethylene double bond, wherein the following relations are satisfied: ?Tg=|Tgp?Tgm}?19 degrees C., where Tgp represents a glass transition temperature of the non-polymerizable resin and Tgm represents a glass transition temperature of a homopolymer of the mono-functional monomer, TgH?10 degrees C., where TgH represents the higher of Tgp and Tgm, and TgL?40 degrees C., where TgL represents the lower of Tgp and Tgm.

Abstract: A toner set, including: a transparent toner including a binder resin a, a releasing agent a and no colorant; and one or more color toners, each including a binder resin b, a colorant b and a releasing agent b, wherein the binder resin a includes a non-crystalline resin ? and a crystalline resin ?, the binder resin b includes a non-crystalline resin ? and a crystalline resin ?, the releasing agent a has an average particle diameter as a long diameter of 0.2 ?m to 2.0 ?m, and there is a relationship of 1<A/B<1.5, where A is an area of the releasing agent a in a transparent toner cross-section from a surface thereof to a ?-depth of a volume-average particle diameter, and B is an area of the releasing agent b in a color-toner cross-section from a surface thereof to a ?-depth of a volume-average particle diameter.

Abstract: Provided is a three-dimensional object formation powder material used for three-dimensional object formation of forming a three-dimensional object by stacking up a plurality of powder material layers each bound by a resin and having a predetermined shape. The three-dimensional object formation powder material contains particles in which a plurality of cores are fixed by a water-soluble resin.

Abstract: A toner including a binder resin which contains a crystalline polyester resin and a non-crystalline polyester resin, wherein the crystalline polyester resin has at least two diffraction peaks in a range of 20°<2?<25° as detected by X-ray diffraction measurement, and has a melting point which is 60° C. or higher but lower than 80° C., and wherein the diffraction peaks each have a half width which is less than 1.0°.

Abstract: An image forming apparatus including: image bearing member; latent image forming unit; developing unit; transfer unit; fixing unit, wherein toner in the developing unit contains amorphous polymer, crystalline resin and releasing agent, when the toner is measured for G? at 40° C. to 210° C. with rheometer at 1 Hz and 1 deg, G?(100) is ?20,000 and G?(150) is ?500 Pa, and straight line drawn by connecting points of the G?(100) and G?(110) on curve of the G? has gradient of ?0.035, the gradient being “a” expressed by: a=|log10G?(100)?log10G?(110)|/10, and the fixing unit includes: heating member containing flexible endless belt; heat source fixed within the flexible endless belt; and press member in contact with the belt to form nip portion, and the fixing unit is configured to heat/press the medium passing through the nip portion to fix the image on the medium.

Abstract: A toner for developing an electrostatic image, including: toner base particles each including a binder resin and a releasing agent; and inorganic fine particles, wherein the toner includes the inorganic fine particles as an external additive on a surface of the toner base particle, wherein the toner base particles have a BET specific surface area of 2.5 m2/g to 5.0 m2/g, and wherein the inorganic fine particles comprise inorganic fine particles (A) which are each a secondary particle where a plurality of primary particles are coalesced together.