Abstract: An aqueous ink for ink jet, the aqueous ink containing a pigment and a resin. The pigment is impregnated with a compound having a structure in which at least two structures each represented by General Formula (1) are bonded by a glycoside bond.

Abstract: An ink jet recording method uses an apparatus including plural aqueous inks including cyan, magenta and yellow inks; a recording head that thermally ejects the inks; a first ink storage portion having an atmosphere communicating portion; a second ink storage portion which is a resinous housing and is directly bonded to the head; and a tube that supplies the inks from the first to second ink storage portions and includes first, second and third tubes corresponding to the respective inks, the second tube having a portion sandwiched between and joined to the first and third tubes. The method includes ejecting the inks from the head to record an image on a recording medium. The difference between the maximum and minimum values of water molar fractions of the cyan, magenta and yellow inks is 5.0% or less. The tube corresponding to the magenta ink is the second tube.

Abstract: An aqueous ink for ink jet, the aqueous ink containing a pigment and a resin. The pigment is impregnated with a compound having a structure in which at least two structures each represented by General Formula (1) are bonded by a glycoside bond.

Abstract: An ink jet recording method using an apparatus having plural aqueous inks including a cyan, magenta and yellow ink; a recording head that thermally ejects the inks; a first ink storage portion having an atmosphere communicating portion; a second ink storage portion which is a resinous housing and is directly bonded to the head; and a tube that supplies the inks from the first to second ink storage portions and includes a first, second and third tube corresponding to the respective inks, the second tube having a portion interposed between and joined to the first and third tubes, the method including ejecting the inks from the head to record an image on a recording medium. The difference between the maximum and minimum values of water molar fractions of the cyan, magenta and yellow inks is 5.0% or less. The tube corresponding to the magenta ink is the second tube.

Abstract: An ink jet recording apparatus is provided which includes a recording unit including a recording head having a surface provided with an ejection opening therein, an aqueous ink that is ejected from the ejection opening to record an image on a recording medium, a protection unit including a covering member that covers the surface having the ejection opening, and a recovery unit separate from the covering member, having no member that scrapes the ink deposited in the ink receiving member or sucks the ink from the ejection opening. The recovery unit includes an ink receiving member that receives waste ink discharged from the ejection opening according to preliminary ejection data, directly from the ejection opening without interposing any other member. The aqueous ink contains a self-dispersible pigment containing the carboxyl group or the sulfonate group.

Abstract: An ink jet recording apparatus is provided which includes a recording unit including a recording head having a surface provided with an ejection opening therein, an aqueous ink that is ejected from the ejection opening to record an image on a recording medium, a protection unit including a covering member that covers the surface having the ejection opening, and a recovery unit separate from the covering member, having no member that scrapes the ink deposited in the ink receiving member or sucks the ink from the ejection opening. The recovery unit includes an ink receiving member that receives waste ink discharged from the ejection opening according to preliminary ejection data, directly from the ejection opening without interposing any other member. The aqueous ink contains a self-dispersible pigment containing the carboxyl group or the sulfonate group.

Abstract: The invention provides an ink containing a first coloring material and a second coloring material, wherein the first coloring material is a compound represented by a general formula (1), and the second coloring material is a compound represented by a general formula (2).

Abstract: Provided is an ink capable of recording an image that is excellent in ozone resistance, hardly causes blurring or color change even in a high-humidity environment, and is excellent in humidity resistance. The ink includes a coloring material and a lithium ion. The coloring material includes a compound represented by the following general formula (I) and a content of the lithium ion in the ink is 3.5 times or more in terms of molar ratio with respect to a content of the compound represented by the general formula (I).

Abstract: Provided is an ink capable of recording an image that is excellent in ozone resistance, hardly causes blurring or color change even in a high-humidity environment, and is excellent in humidity resistance. The ink includes a coloring material and a lithium ion. The coloring material includes a compound represented by the following general formula (I) and a content of the lithium ion in the ink is 3.5 times or more in terms of molar ratio with respect to a content of the compound represented by the general formula (I).

Abstract: The invention provides an ink containing a first coloring material and a second coloring material, wherein the first coloring material is a compound represented by a general formula (1), and the second coloring material is a compound represented by a general formula (2).