Ink, ink cartridge, and inkjet recording apparatus

Abstract

Provided is an ink containing at least: an inorganic pigment having a surface hydrophobicity; resin particles; and water.

1 - 13 . (canceled) 
     
     
         14 . An ink, comprising:
 an inorganic pigment having a surface hydrophobicity;   resin particles;   water; and   a water-soluble organic solvent,   wherein the water-soluble organic solvent is at least one of 3-methyl-1,3-butanediol and 3-methoxy-3-methyl-1-butanol, and   wherein the inorganic pigment having the surface hydrophobicity is dispersed in the water with the water-soluble organic solvent, and a chemical structure for imparting hydrophobicity to a surface of the inorganic pigment is selected from a group consisting of alkyl and fluoroalkyl.   
     
     
         15 . The ink according to  claim 14 ,
 wherein the inorganic pigment having a surface hydrophobicity is titanium dioxide.   
     
     
         16 . The ink according to  claim 14 ,
 wherein a silane coupling agent selected from a group consisting of dialkyl dihalogenated silane, trialkyl halogenated silane, and alkyl trihalogenated silane is utilized in imparting hydrophobicity to the surface of the inorganic pigment.   
     
     
         17 . The ink according to  claim 14 , wherein a particle diameter (D50) of the inorganic pigment having a surface hydrophobicity at a 50% cumulative mean in a volume-basis particle size distribution thereof is from 200 nm to 600 nm. 
     
     
         18 . The ink according to  claim 14 ,
 wherein the resin particles are at least one kind selected from the group consisting of styrene acrylic resin particles, acrylic silicone resin particles, polyurethane resin particles, and acrylic urethane resin particles.   
     
     
         19 . The ink according to  claim 14 ,
 wherein a content of the resin particles is from 0.1% by mass to 20% by mass.   
     
     
         20 . The ink according to  claim 14 ,
 wherein the ink is a white ink.   
     
     
         21 . The ink according to  claim 14 ,
 wherein the ink is for inkjet recording.   
     
     
         22 . An inkjet recording method, comprising:
 applying an impulsion to the ink according  claim 14  to fly the ink, to thereby record an image on a recording medium.   
     
     
         23 . An image forming method, comprising:
 forming an image over a base material using the ink according to  claim 14 .   
     
     
         24 . An ink recorded matter, comprising:
 an image formed over a base material using the ink according to  claim 14 .   
     
     
         25 . An ink cartridge, comprising:
 an ink; and   a container in which the ink is contained,   wherein the ink comprises:   an inorganic pigment having a surface hydrophobicity;   resin particles;   water; and   a water-soluble organic solvent,   wherein the water-soluble organic solvent is at least one of 3-methyl-1,3-butanediol and 3-methoxy-3-methyl-1-butanol, and   wherein the inorganic pigment having the surface hydrophobicity is dispersed in the water with the water-soluble organic solvent, and a chemical structure for imparting hydrophobicity to a surface of the inorganic pigment is selected from a group consisting of alkyl and fluoroalkyl.   
     
     
         26 . An inkjet recording apparatus, comprising:
 an ink flying unit configured to apply an impulsion to an ink to fly the ink, to thereby record an image on a recording medium,   wherein the ink comprises:   an inorganic pigment having a surface hydrophobicity;   resin particles;   water; and   a water-soluble organic solvent,   wherein the water-soluble organic solvent is at least one of 3-methyl-1,3-butanediol and 3-methoxy-3-methyl-1-butanol, and   wherein the inorganic pigment having the surface hydrophobicity is dispersed in the water with the water-soluble organic solvent, and a chemical structure for imparting hydrophobicity to a surface of the inorganic pigment is selected from a group consisting of alkyl and fluoroalkyl.