Abstract: A game management device includes a game information storage control unit for storing in a storage device, an each user's game information, the game information storage control unit including an owned object information storage control unit for storing in a storage device, an object owned by each user; a priority setting unit for setting a priority for an object owned by a first user according to a first user's gift destination selecting operation of selecting a second user as a gift destination, the priority setting unit setting the priority based on a second user's game information for recommending the object owned by the first user for a gift to the second user; and a priority notification unit for transmitting to a terminal device of the first user, an information for notifying the priority set for the object owned by the first user.

Abstract: The present invention relates to a process for producing a toner for electrophotography which is excellent in dispersibility of a colorant in the toner and capable of considerably improving an image density, as well as a toner for electrophotography which is produced by the process. There is provided a process for producing a toner for electrophotography which includes the step of mixing a dispersion of colorant-containing polymer particles with a dispersion of resin particles containing substantially no colorant to aggregate the colorant-containing polymer particles and the resin particles, wherein the polymer contains a constitutional unit derived from a salt-forming group-containing monomer (a) and a constitutional unit derived from an aromatic ring-containing monomer (b).

Abstract: A game management device includes a game information storage control unit for storing in a storage device, an each user's game information, the game information storage control unit including an owned object information storage control unit for storing in a storage device, an object owned by each user; a priority setting unit for setting a priority for an object owned by a first user according to a first user's gift destination selecting operation of selecting a second user as a gift destination, the priority setting unit setting the priority based on a second user's game information for recommending the object owned by the first user for a gift to the second user; and a priority notification unit for transmitting to a terminal device of the first user, an information for notifying the priority set for the object owned by the first user.

Abstract: The present invention relates to crosslinked core/shell polymer particles containing a pigment which are usable in a water-based ink for ink-jet printing and exhibit excellent optical density and gloss and are prevented from suffering from occurrence of bronzing, wherein the polymer particles each include a core portion and a shell portion which are respectively made of a crosslinked polymer, and a weight ratio of the pigment to the pigment-containing crosslinked core/shell polymer particles [(weight of the pigment/weight of the pigment-containing crosslinked core/shell polymer particles)×100] is from 25 to 75. The present invention further relates to a water dispersion and a water-based ink for ink-jet printing which contain the crosslinked core/shell polymer particles and a process for producing crosslinked polymer particles.

Abstract: The present invention relates to (A) a water dispersion for ink-jet printing including particles of a waster-insoluble crosslinked polymer which contain a colorant, and a water-insoluble organic compound, wherein the water-insoluble crosslinked polymer is (1) a polymer produced by crosslinking a water-insoluble polymer with a crosslinking agent; (2) a polymer produced by crosslinking 100 parts by weight of the water-insoluble polymer with 0.5 to 9.5 parts by weight of the crosslinking agent; or (3) a polymer having a weight-average segment molecular weight of from 1,400 to 20,000 as calculated from [(weigh-average molecular weight of the water-insoluble polymer)/(number of molar equivalents of the crosslinking agent to be reacted with 1 mol of the water-insoluble polymer+1)]; (B) an ink for ink-jet printing containing the above water dispersion which is excellent in gloss and storage stability; and (C) particles of the water-insoluble crosslinked polymer.

Abstract: The present invention relates to a process for producing a toner for electrophotography which is excellent in dispersibility of a colorant in the toner and capable of considerably improving an image density, as well as a toner for electrophotography which is produced by the process. There is provided a process for producing a toner for electrophotography which includes the step of mixing a dispersion of colorant-containing polymer particles with a dispersion of resin particles containing substantially no colorant to aggregate the colorant-containing polymer particles and the resin particles, wherein the polymer contains a constitutional unit derived from a salt-forming group-containing monomer (a) and a constitutional unit derived from an aromatic ring-containing monomer (b).

Abstract: The present invention relates to crosslinked core/shell polymer particles containing a pigment which are usable in a water-based ink for ink-jet printing and exhibit excellent optical density and gloss and are prevented from suffering from occurrence of bronzing, wherein the polymer particles each include a core portion and a shell portion which are respectively made of a crosslinked polymer, and a weight ratio of the pigment to the pigment-containing crosslinked core/shell polymer particles [(weight of the pigment/weight of the pigment-containing crosslinked core/shell polymer particles)×100] is from 25 to 75. The present invention further relates to a water dispersion and a water-based ink for ink-jet printing which contain the crosslinked core/shell polymer particles and a process for producing crosslinked polymer particles.

Abstract: There are provided a water dispersion for ink-jet printing which contains a water dispersion of particles of a vinyl polymer or a polyester-based polymer which contain a colorant (B), and a water-insoluble organic compound (A) except for aliphatic acid derivatives; a water-based ink containing the water dispersion; a print obtainable by printing images or characters with the water-based ink; and a process for producing the water dispersion. Also, there are provided an ink set for ink-jet printing containing two or more kinds of inks having different colors from each other wherein the inks each contain a water dispersion of particles of a vinyl polymer or a polyester-based polymer which contain a colorant (B), and a water-insoluble organic compound (A) except for aliphatic acid derivatives; and a process for producing a print using the ink set. The water-based ink can provide multi-order color images or composite black images which exhibits a high optical density and is excellent in gloss and image clarity.

Abstract: A water dispersion for inkjet printing which contains polymer particles containing a colorant. The polymer constituting the polymer particles is produced by the copolymerization of a monomer mixture in the presence of a-methylstyrene dimer. The water dispersion for inkjet printing and a water-based ink for inkjet printing containing the water dispersion exhibit excellent jetting properties and a high optical density.

Abstract: A polymeric dispersant containing a vinyl polymer having a constitutional unit represented by the following formula 1: wherein R1 is a hydrogen atom or a methyl group, R2 and R4 may be the same or different and are each independently an alkylene group having from 2 to 18 carbon atoms or an arylene group having from 6 to 18 carbon atoms, R3 is an alkylene group having from 4 to 18 carbon atoms or an arylene group having from 6 to 18 carbon atoms, M1 and M2 may be the same or different and are each independently a hydrogen atom or a cation, k and m may be the same or different and are each independently a number from 0 to 20, and L is a number from 1 to 20, with the proviso that L is 2 or more when k is zero. The polymeric dispersant is used for the production of a water dispersion for ink-jet printing. The water dispersion for ink-jet printing is used for the production of a water-based ink for ink-jet printing.

Abstract: Provided are a water dispersion for ink-jet printing, wherein it is a water dispersion of water-insoluble graft polymer particles containing a colorant; the above graft polymer contains a principal chain having a constitutional unit derived from a vinyl base monomer and a side chain which is derived from a macromer containing an aromatic ring and having a polymerizable functional group at one end; both of the Log P values of the above principal chain and the above side chain are positive; and a difference between both falls in a specific range, and a water-based ink containing the same. The above water-based ink is excellent in a discharge stability, a storage stability, a heat stability and a water resistance.

Abstract: The present invention relates to (A) a water dispersion for ink-jet printing including particles of a waster-insoluble crosslinked polymer which contain a colorant, and a water-insoluble organic compound, wherein the water-insoluble crosslinked polymer is (1) a polymer produced by crosslinking a water-insoluble polymer with a crosslinking agent; (2) a polymer produced by crosslinking 100 parts by weight of the water-insoluble polymer with 0.5 to 9.5 parts by weight of the crosslinking agent; or (3) a polymer having a weight-average segment molecular weight of from 1,400 to 20,000 as calculated from [(weigh-average molecular weight of the water-insoluble polymer)/(number of molar equivalents of the crosslinking agent to be reacted with 1 mol of the water-insoluble polymer+1)]; (B) an ink for ink-jet printing containing the above water dispersion which is excellent in gloss and storage stability; and (C) particles of the water-insoluble crosslinked polymer.

Abstract: The present invention relates to a water dispersion for ink jet recording, comprising water-insoluble vinyl polymer particles containing a colorant, wherein the water-insoluble vinyl polymer is a water-insoluble vinyl polymer obtained by polymerizing a monomer mixture comprising: (A) a monomer represented by the formula (I): wherein R1 represents a hydrogen atom or a methyl group, R2 represents a hydrogen atom, an alkyl group having 1 to 20 carbon atoms or a phenyl group whose hydrogen atom may be substituted with an alkyl group having 1 to 9 carbon atoms and m denotes a number from 65 to 100; (B) a salt-forming group-containing monomer; and (C) a hydrophobic monomer and the average particle diameter of the water-insoluble vinyl polymer particles containing a colorant is 0.02 to 0.50 ?m.

Abstract: A water dispersion for inkjet printing, which contains water-insoluble polymer particles containing a colorant. The content of the water-insoluble polymer in the water dispersion is from 1 to 7% by weight, and the surface tension of the water dispersion is 60 mN/m or higher at 20° C. A water-based ink for inkjet printing which contains the water dispersion produces printed images with a high optical density and a good color-to-color bleed resistance.

Abstract: There are provided a water dispersion for ink-jet printing which contains a water dispersion of particles of a vinyl polymer or a polyester-based polymer which contain a colorant (B), and a water-insoluble organic compound (A) except for aliphatic acid derivatives; a water-based ink containing the water dispersion; a print obtainable by printing images or characters with the water-based ink; and a process for producing the water dispersion. Also, there are provided an ink set for ink-jet printing containing two or more kinds of inks having different colors from each other wherein the inks each contain a water dispersion of particles of a vinyl polymer or a polyester-based polymer which contain a colorant (B), and a water-insoluble organic compound (A) except for aliphatic acid derivatives; and a process for producing a print using the ink set. The water-based ink can provide multi-order color images or composite black images which exhibits a high optical density and is excellent in gloss and image clarity.

Abstract: The invention provides a process for producing a water dispersion for ink jet recording,which comprises the following steps 1 and 2: (Step 1) a step of obtaining a pigment treated with (a) a water-insoluble vinyl polymer particles by making a pigment and (a) a water-insoluble vinyl polymer particles present in an aqueous solvent and then removing the solvent; and (Step 2) a step of obtaining a water dispersion of a pigment-containing water-insoluble vinyl polymer particles by dispersing a mixture comprising the water-insoluble vinyl polymer particle (a)—treated pigment obtained in step 1, an organic solvent, (b) a water-insoluble vinyl polymer and water and then removing the organic solvent.

Abstract: The present invention relates to an aqueous ink for ink jet printer recording including a water dispersion of water-insoluble vinyl polymer particles containing carbon black, wherein the carbon black has a volatile content of 5% or less at 950° C. and includes at least two kinds of carbon black differing from each other in at least one of a primary particle diameter, a specific surface area and a DBP absorption amount.

Abstract: A water-based ink comprising an aqueous dispersion of polymer particles made of a water-insoluble vinyl polymer containing a colorant, wherein the water-insoluble vinyl polymer is prepared by polymerizing a monomer composition comprising a specific monomer A such as a monomer A1 represented by the formula (I): wherein R1 is hydrogen or methyl, R2 is hydrogen, alkyl or alkylphenyl, and n is 1 to 30; a monomer having a salt-forming group; and a monomer copolymerizable with the monomer A and the monomer having a salt-forming group. The water-based ink can be suitably used as a water-based ink for inkjet recording and the like.

Abstract: The present invention relates to crosslinked core/shell polymer particles containing a pigment which are usable in a water-based ink for ink-jet printing and exhibit excellent optical density and gloss and are prevented from suffering from occurrence of bronzing, wherein the polymer particles each include a core portion and a shell portion which are respectively made of a crosslinked polymer, and a weight ratio of the pigment to the pigment-containing crosslinked core/shell polymer particles [(weight of the pigment/weight of the pigment-containing crosslinked core/shell polymer particles)×100] is from 25 to 75. The present invention further relates to a water dispersion and a water-based ink for ink-jet printing which contain the crosslinked core/shell polymer particles and a process for producing crosslinked polymer particles.

Abstract: A water dispersion for inkjet printing which contains polymer particles containing a colorant. The polymer constituting the polymer particles is produced by the copolymerization of a monomer mixture in the presence of a-methylstyrene dimer. The water dispersion for inkjet printing and a water-based ink for inkjet printing containing the water dispersion exhibit excellent jetting properties and a high optical density.