Detailing agent for three-dimensional (3D) printing

A three-dimensional (3D) printing method, comprising:

• applying a build material;
• heating the build material to a temperature ranging from about 50° C. to about 400° C.;
• selectively applying a fusing agent on a portion of the build material;
• selectively applying a detailing agent on an other portion of the build material outside an edge boundary of the portion of the build material, the detailing agent penetrating the other portion of the build material and dying an area of the portion of the build material adjacent to the edge boundary, the detailing agent including:
• a colorant present in an amount ranging from about 1.00 wt % to about 3.00 wt % based on a total weight of the detailing agent, wherein the colorant is a dye having substantially no absorbance in a range of 650 nm to 2500 nm;
• a co-solvent selected from the group consisting of tetraethylene glycol, tripropylene glycol methyl ether, dipropylene glycol methyl ether, tripropylene glycol butyl ether, dipropylene glycol butyl ether, triethylene glycol butyl ether, 1,2-hexanediol, 2-hydroxyethyl-2-pyrrolidinone, 2-pyrrolidinone,1,6-hexanediol, and combinations thereof, and the co-solvent is present in an amount ranging from about 1.00 wt % to about 20.00 wt % based on the total weight of the detailing agent;
• a surfactant having a hydrophilic-lipophilic balance (HLB) of less than 10, and the surfactant is present in an amount ranging from about 0.01 wt % to about 5.00 wt % based on the total weight of the detailing agent;
• and
• a balance of water based on the total weight of the detailing agent;
• and
• exposing the build material to radiation, whereby the fusing agent at least partially fuses the portion of the build material in contact with the fusing agent, and the detailing agent prevents fusing of the other portion of the build material in contact with the detailing agent.

A three-dimensional object printing kit, comprising:

• a build material;
• a fusing agent;
• and
• a detailing agent, including:
• a dye having substantially no absorbance in a range of 650 nm to 2500 nm, wherein the dye is present in an amount ranging from about 1.00 wt % to about 3.00 wt % based on a total weight of the detailing agent;
• a co-solvent selected from the group consisting of tetraethylene glycol, tripropylene glycol methyl ether, dipropylene glycol methyl ether, tripropylene glycol butyl ether, dipropylene glycol butyl ether, triethylene glycol butyl ether, 1,2-hexanediol, 2-hydroxyethyl-2-pyrrolidinone, 2-pyrrolidinone, 1,6-hexanediol, and combinations thereof, and the co-solvent is present in an amount ranging from about 1.00 wt % to about 20.00 wt % based on the total weight of the detailing agent;
• a surfactant having a hydrophilic-lipophilic balance (HLB) of less than 10, and the surfactant is present in an amount ranging from about 0.01 wt % to about 5.00 wt % based on the total weight of the detailing agent;
• an anti-kogation agent selected from the group consisting of oleth-3 phosphate and a metal chelator, and the anti-kogation agent is present in an amount ranging from about 0.10 wt % to about 2.00 wt % based on the total weight of the detailing agent;
• a biocide selected from the group consisting of an aqueous solution of 1,2-benzisothiazolin-3-one, an aqueous solution of methylisothiazolone, and combinations thereof, and the biocide is present in an amount ranging from about 0.01 wt % to about 0.20 wt % based on the total weight of the detailing agent;
• and
• a balance of water based on the total weight of the detailing agent.