摘要:
An ink for ink jet recording, the ink being used in an ink jet recording method that includes ejecting an ink from a recording head by the action of thermal energy, includes water, a self-dispersing pigment, and polymer particles, in which the polymer particles have a glass transition temperature of 25 degrees (Celsius) or lower, an average particle size of 80 nm to 220 nm, and an acid value of 25 mgKOH/g to 150 mgKOH/g.
摘要:
Aspects of the present invention provide an ink-jet recording method including the step of applying an ink to a recording medium by discharging the ink from a recording head by action of thermal energy and the step of fixing the ink to the recording medium by heating the ink applied to the recording medium. The ink contains water, a self-dispersing pigment, and resin particles. The resin particles have a glass transition temperature of not less than 25° C., an average particle diameter of 70 nm or more and 220 nm or less, and an acid value of 25 mg KOH/g or more and 150 mg KOH/g or less.
摘要:
The invention provides an ink jet ink including a coloring material, a polymer particle, a crosslinking agent and an aqueous medium. The polymer particle has a unit derived from a compound represented by the following general formula (1) and a glass transition temperature of 25° C. or less. The crosslinking agent has a functional group capable of forming a crosslinked structure with a ketone group derived from the compound represented by the general formula (1) by a dehydration reaction. The mass ratio of a content (% by mass) of the coloring material based on the total mass of the ink to a content (% by mass) of the polymer particle based on the total mass of the ink is 0.2 times or more and 2.5 times or less.
摘要:
The invention provides an ink jet recording ink containing a self-dispersion pigment to a surface of which an anionic functional group represented by the following general formula (1) is bonded directly or through another atomic group, an ammonium salt of an organic carboxylic acid, water, and a water-soluble compound having a hydrophilicity-hydrophobicity coefficient of 0.26 or more as defined by the following equation (A), the ink having a surface tension of 34 mN/m or less, wherein M1 and M2 are, independently of each other, a hydrogen atom, alkali metal, ammonium or organic ammonium; Hydrophilicity-hydrophobicity coefficient=[(Water activity of a 20% aqueous solution)−(Molar fraction of water in the 20% aqueous solution)]/[1−(Molar fraction of water in the 20% aqueous solution)] (A).
摘要:
The invention provides an ink jet ink including a coloring material, a polymer particle, a crosslinking agent and an aqueous medium. The polymer particle has a unit derived from a compound represented by the following general formula (1) and a glass transition temperature of 25° C. or less. The crosslinking agent has a functional group capable of forming a crosslinked structure with a ketone group derived from the compound represented by the general formula (1) by a dehydration reaction. The mass ratio of a content (% by mass) of the coloring material based on the total mass of the ink to a content (% by mass) of the polymer particle based on the total mass of the ink is 0.2 times or more and 2.5 times or less.
摘要:
An ink jet printing ink for use in an ink jet printing method. The ink is ejected from a print head by the action of thermal energy and includes water, a self-dispersing pigment, and at least two types of resin particles. One of the at least two types of resin particles (resin particle A) and another of the at least two types of resin particles (resin particle B) have an average particle size of 80 nm or more but 220 nm or less and an acid value of 25 mgKOH/g or more but 150 mgKOH/g or less. The resin particle A has a glass transition temperature of 25 degrees Celsius or less. The resin particle B has a glass transition temperature of 25 degrees Celsius or more. A difference in glass transition temperature between the resin particle A and the resin particle B is 10 degrees Celsius or more.
摘要:
The invention provides an ink jet recording ink containing a self-dispersion pigment to a surface of which an anionic functional group represented by the following general formula (1) is bonded directly or through another atomic group, an ammonium salt of an organic carboxylic acid, water, and a water-soluble compound having a hydrophilicity-hydrophobicity coefficient of 0.26 or more as defined by the following equation (A), the ink having a surface tension of 34 mN/m or less, wherein M1 and M2 are, independently of each other, a hydrogen atom, alkali metal, ammonium or organic ammonium; Hydrophilicity-hydrophobicity coefficient=[(Water activity of a 20% aqueous solution)−(Molar fraction of water in the 20% aqueous solution)]/[1−(Molar fraction of water in the 20% aqueous solution)] (A)
摘要:
Polymeric compounds suitable for ink and toner compositions, and image forming methods and apparatus using an ink or toner composition containing such a polymer compound, and particularly to a polymer compound having a repeating unit structure represented by the general formula wherein B is a linear or branched alkylene group having 1 to 15 carbon atoms and may be substituted, m is an integer of 1 to 30, q is an integer of 2 to 30, and R1 is hydrogen, an alkyl group which may be substituted, or an aromatic ring structure which may be substituted, with the proviso that when m is a plural number, the B groups may be different from each other, ink and toner compositions containing the polymer compound, a solvent or dispersion medium and a coloring material, and image forming methods and image forming apparatus using such a composition.
摘要:
A polymer compound is provided which is suitable to improve the dispersibility of coloring materials or solids in an ink or toner composition and which has a repeating unit represented by the general formula (2): (2) wherein X′ represents a polyalkenyl group; each A represents independently a linear or branched alkylene group of 1 to 15 carbon atoms which may be substituted; m represents an integer of 0 to 30; B represents a single bond or an alkylene group which may be substituted; each D represents independently an aromatic ring in which at least one hydrogen atom attached to the ring is displaced by a fluorine atom; n represents an integer of 1 to 10; and R represents a hydrogen atom, an alkyl group which may be substituted, or an aromatic ring which may be substituted.
摘要:
The invention provides an ink composition, which is improved in dispersibility and fastness properties and is excellent in dispersion stability and re-solubility owing to dispersed particles in which a coloring material is included by a crosslinked hydrophobic block segment in a dispersing polymer. The ink composition contains an amphiphilic block polymer compound, in which a coloring material is included, and a medium, wherein the amphiphilic block polymer compound, in which the coloring material is included, forms a dispersed particle having the hydrophobic block segment as an internal core part, and the hydrophobic block segment is crosslinked.