An aqueous ink jet composition contains a dye composed of at least one of sublimation fluorescent dyes or at least one of disperse fluorescent dyes, polyester, and water. The amount of the polyester is 8 times or more and 300 times or less greater than the amount of the dye. Preferably, the amount of the polyester is 5% by mass or more and 35% by mass or less. Preferably, the amount of the dye is 0.05% by mass or more and 1% by mass or less.

An aqueous ink jet composition contains water and particles of a material containing polyester and a dye composed of at least one of sublimation dyes or at least one of disperse dyes. Preferably, the dye is dispersed in the particles.

An aqueous ink jet composition contains water, a dye composed of at least one of sublimation dyes or at least one of disperse dyes, and polyester particles, which are particles made of at least one material including polyester. At least a subset of the polyester particles is stained with the dye.

A printing method includes selecting a dye sublimation ink, having: a disperse dye colorant dispersion; a primary solvent selected from the group consisting of glycerol, ethoxylated glycerol, 2-methyl-1,3-propanediol, dipropylene glycol, and combinations thereof; a surfactant selected from the group consisting of nonionic surfactants, anionic surfactants, and combinations thereof; an additive selected from the group consisting of a buffer, a biocide, a chelating agent, and combinations thereof; and a balance of water. An operating energy that includes a margin over a turn-on energy (TOE) for a thermal inkjet printhead is applied to a heating resistor of the printhead, wherein the margin ranges from about 10% to about 25% over the TOE. The dye sublimation ink is printed from the thermal inkjet printhead i) directly onto a textile substrate, or ii) onto a transfer medium to form an image thereon; and the image is transferred onto the textile substrate.

The present invention relates to a method of dyeing a substrate comprising (i) elastomeric fibre containing at least 30 wt. % of a first polymer having a glass transition temperature T of less than 60 C. and (ii) non-elastomeric companion fibre containing more than 50 wt. % of a second polymer, said second polymer being polymer having no glass transition temperature or polymer Shaving a glass transition temperature T.sub.2 that is at least 20 C. higher than T.sub.1, said method comprising: a) contacting the substrate with a dyeing medium to produce a pre-dyed substrate comprising 10 dyed elastomeric fibre and dyed companion fibre; b) contacting the pre-dyed substrate with an extraction medium at a temperature T.sub.e and a pressure P.sub.e, to produce a high fastness dyed substrate, said extraction medium comprising at least 50 wt. % of supercritical or liquefied carbon dioxide; wherein T.sub.e exceeds T.sub.g1,extraction and wherein T.sub.e is less than T.sub.g2,extraction in case the companion 1 fibre contains more than 50 wt. % of polymers having a glass transition temperature T.sub.2; T.sub.g1,extraction representing the glass transition temperature of the first polymer in carbon dioxide at pressure P.sub.e; and T.sub.g2, extraction representing the glass transition temperature of the second polymer in carbon dioxide at pressure P.sub.e. 20 The present method enables the production of dyed substrates containing elastomeric fibre as well as non-elastomeric companion fibre that exhibit extremely high colour fastness because the dye is almost exclusively contained in the companion fibres. The present invention also provides a dyed substrate that can be obtained by the 2 aforementioned dyeing method.

An example of an inkjet pre-treatment fluid for dye sublimation printing consists of a humectant; a cationic polymer; a surfactant; a co-solvent present in an amount up to about 50 wt % based on a total weight of the inkjet pre-treatment fluid; and a balance of water. In an example of a printing method, the inkjet pre-treatment fluid is inkjet printed onto a textile substrate to form a pre-treated area on the textile substrate.

An example of an inkjet pre-treatment fluid for dye sublimation printing consists of a humectant; a cationic polymer; a surfactant; a co-solvent present in an amount up to about 50 wt % based on a total weight of the inkjet pre-treatment fluid; and a balance of water. In an example of a printing method, the inkjet pre-treatment fluid is inkjet printed onto a textile substrate to form a pre-treated area on the textile substrate.

Described herein are methods of dyeing fibers, and dyed fibers and textiles made using the methods. The methods involve contacting a fiber with a dye liquor at a dye liquor temperature of about 30 C. to 115 C. to form a dyed fiber, wherein the dye liquor components include at least N,N-diacetyl indigo and a salt solution having ionic strength of about 0.03 M (moles/liter) to 1 M and pH of about 3 to 8 at 20 C. The contacting is generally carried out for a contact period of about 10 seconds to 30 minutes, for example by immersing the fiber in the heated dye liquor. By using the disclosed methods, N,N-diacetyl indigo is substantially uniformly distributed on the dyed fiber to provide intense, vibrant colors affixed thereto. Dyed textiles display substantially uniform color.

Described herein are methods of dyeing fibers, and dyed fibers and textiles made using the methods. The methods involve contacting a fiber with a dye liquor at a dye liquor temperature of about 30 C. to 115 C. to form a dyed fiber, wherein the dye liquor components include at least N,N-diacetyl indigo and a salt solution having ionic strength of about 0.03 M (moles/liter) to 1 M and pH of about 3 to 8 at 20 C. The contacting is generally carried out for a contact period of about 10 seconds to 30 minutes, for example by immersing the fiber in the heated dye liquor. By using the disclosed methods, N,N-diacetyl indigo is substantially uniformly distributed on the dyed fiber to provide intense, vibrant colors affixed thereto. Dyed textiles display substantially uniform color.

Provided herein is an inkjet dye-sublimation ink composition that is formulated to interact with an immobilizing composition such that the ink composition coagulates on the surface of an absorptive substrate, thereby substantially limiting soaking of the ink composition into the substrate. Also provided are a printing process and a printing machine, wherein the ink composition is directly printed on the substrate concomitantly with the immobilizing composition, and thereafter undergo heat-pressing to afford a dye-sublimation transfer of the dye to the substrate, thereby forming an image which is characterized by sharp and well defined edges of the dyed areas.