Abstract: Provided is an ink jet recording method capable of recording a high-quality image in which a shift in color tone of a secondary color image recorded with a plurality of inks through use of a circulation serial head is reduced. The ink jet recording method includes recording an image by ejecting an ink from a recording head including: a plurality of ejection orifices; an ejection element; and a first flow path and a second flow path which communicate to each other between each of the plurality of ejection orifices and the ejection element and inside which the ink flows. The plurality of ejection orifice arrays includes a first ejection orifice array to eject a first ink and a second ejection orifice array to eject a second ink. A molar fraction R1 of water in the first ink and a molar fraction R2 of water in the second ink satisfy R1<R2.

Abstract: Provided is an ink jet recording method capable of recording a high-quality image in which color unevenness is reduced during secondary color reciprocal recording performed with a plurality of inks through use of a circulation serial head. The method includes: an ejection step and a flow step of flowing the ink in the first flow path into the second flow path. The recording head is of a serial type. The first flow path and the second flow path are arranged in parallel and have the same flow direction of the ink. The plurality of ejection orifice arrays includes a first ejection orifice array configured to eject a first ink and a second ejection orifice array configured to eject a second ink. A molar fraction R1 of water in the first ink and a molar fraction R2 of water in the second ink satisfy a relationship of R1?R2.

Abstract: Provided is an ink jet recording method capable of suppressing a decrease in ejection stability of an ink caused by a bubble even while using an ink jet recording apparatus including a recording head of an ink circulation system. The method includes recording an image with an ink jet recording apparatus including a recording head, the recording being performed by applying an aqueous ink. The recording head is configured to allow the aqueous ink to be supplied from a first flow path or a second flow path to a pressure chamber. The aqueous ink has a dynamic surface tension at a lifetime of 0 milliseconds of 60 mN/m or less. A contact angle between an inner wall surface of each of the first flow path and the second flow path and the aqueous ink is 60° or less.

Abstract: An inkjet recording medium includes a substrate having a resin layer, a bonding layer disposed on the resin layer, and an ink-receiving layer disposed on the bonding layer. The surface of the inkjet recording medium on the ink-receiving layer side of the inkjet recording medium has a 20° glossiness of 13.0 or more. The bonding layer contains an ultraviolet inhibitor at a content of 5.0% by mass or more and 35.0% by mass or less based on the total mass of the bonding layer.

Abstract: A recording method includes a step of applying a first ink to a recording medium; and a step of recording an image on the recording medium by applying a second ink so that the second ink at least partially overlaps a region to which the first ink has been applied. The first ink is an aqueous ink containing a silver particle. The second ink is an aqueous ink containing a coloring material. The recording medium has an ink receiving layer that contains a halide ion selected from the group consisting of a bromide ion and an iodide ion. The ink receiving layer has a halide ion content (mmol/m2) of 0.1 mmol/m2 or more to 0.8 mmol/m2 or less.

Abstract: An ink jet printing method includes printing an image on a printing medium including a transparent substrate and an ink-receiving layer on one side of the transparent substrate by applying a first ink and a second ink onto the surface of the ink-receiving layer of the printing medium in such a manner that the first ink and the second ink are at least partially superposed one on the other. The first ink is an aqueous ink containing silver particles, and the second ink is an aqueous ink containing a dye. The particle size at 50% in the cumulative volume distribution of the silver particles is larger than the average pore size of the ink-receiving layer.

Abstract: A recording medium substrate in an aspect of the present invention is a recording medium substrate having a base paper and a stretched film layer on the base paper, wherein the stretched film layer has a thickness of 70 ?m or more, and the recording medium substrate has an average surface roughness of 0.3 ?m or less. A recording medium in another aspect of the present invention includes a recording medium substrate, a first ink receiving layer on the recording medium substrate, and a second ink receiving layer on the first ink receiving layer, wherein the first ink receiving layer is in contact with the second ink receiving layer, the first ink receiving layer contains an alumina hydrate and a hydroxy acid, the second ink receiving layer contains an alumina hydrate and a sulfonic acid.

Abstract: An inkjet recording medium includes a substrate having a resin layer, a bonding layer disposed on the resin layer, and an ink-receiving layer disposed on the bonding layer. The surface of the inkjet recording medium on the ink-receiving layer side of the inkjet recording medium has a 20° glossiness of 13.0 or more. The bonding layer contains an ultraviolet inhibitor at a content of 5.0% by mass or more and 35.0% by mass or less based on the total mass of the bonding layer.

Abstract: A recording method includes a step of applying a first ink to a recording medium; and a step of recording an image on the recording medium by applying a second ink so that the second ink at least partially overlaps a region to which the first ink has been applied. The first ink is an aqueous ink containing a silver particle. The second ink is an aqueous ink containing a coloring material. The recording medium has an ink receiving layer that contains a halide ion selected from the group consisting of a bromide ion and an iodide ion. The ink receiving layer has a halide ion content (mmol/m2) of 0.1 mmol/m2 or more to 0.8 mmol/m2 or less.

Abstract: An inkjet printing method including the steps of applying a first ink to a printing medium and applying a second ink to the printing medium so as to at least overlap a region provided with the first ink, wherein the first ink is an aqueous ink containing silver particles, the second ink is an aqueous ink containing an anionic dye, the printing medium includes an ink-receiving layer containing at least one cationic compound selected from a group consisting of a polyvalent metal salt and a salt of a cationic resin, and the content (g/m2) of the cationic compound per unit area of the ink-receiving layer is 0.20 g/m2 or more.

Abstract: A recording medium substrate in an aspect of the present invention is a recording medium substrate having a base paper and a stretched film layer on the base paper, wherein the stretched film layer has a thickness of 70 ?m or more, and the recording medium substrate has an average surface roughness of 0.3 ?m or less. A recording medium in another aspect of the present invention includes a recording medium substrate, a first ink receiving layer on the recording medium substrate, and a second ink receiving layer on the first ink receiving layer, wherein the first ink receiving layer is in contact with the second ink receiving layer, the first ink receiving layer contains an alumina hydrate and a hydroxy acid, the second ink receiving layer contains an alumina hydrate and a sulfonic acid.

Abstract: An ink jet printing method includes printing an image on a printing medium including a transparent substrate and an ink-receiving layer on one side of the transparent substrate by applying a first ink and a second ink onto the surface of the ink-receiving layer of the printing medium in such a manner that the first ink and the second ink are at least partially superposed one on the other. The first ink is an aqueous ink containing silver particles, and the second ink is an aqueous ink containing a dye. The particle size at 50% in the cumulative volume distribution of the silver particles is larger than the average pore size of the ink-receiving layer.

Abstract: An inkjet printing method including the steps of applying a first ink to a printing medium and applying a second ink to the printing medium so as to at least overlap a region provided with the first ink, wherein the first ink is an aqueous ink containing silver particles, the second ink is an aqueous ink containing an anionic dye, the printing medium includes an ink-receiving layer containing at least one cationic compound selected from a group consisting of a polyvalent metal salt and a salt of a cationic resin, and the content (g/m2) of the cationic compound per unit area of the ink-receiving layer is 0.20 g/m2 or more.

Abstract: A recording medium includes a substrate and an ink-receiving layer as the top layer. The ink-receiving layer contains inorganic particles. The inorganic particles contain cationized colloidal silica, alumina hydrate, and fumed alumina. A content of the cationized colloidal silica is 5% or more by mass and 25% or less by mass based on a content of the inorganic particles. The mass ratio of the alumina hydrate to the fumed alumina (alumina hydrate content:fumed alumina content) is from 95:5 to 55:45.

Abstract: A recording medium includes a substrate, and a first and a second ink receiving layer over the substrate in this order from the side close to the substrate. The first ink receiving layer contains fumed silica, alumina, and zirconium compound. In the first ink receiving layer, the mass ratio of the fumed silica to the alumina is in the range of 40:60 to 60:40. The zirconium compound content in the first ink receiving layer is in the range of 0.1% by mass to 3.0% by mass relative to the total mass of the first ink receiving layer. The second ink receiving layer contains inorganic particles including at least one of fumed silica and alumina. In the second ink receiving layer, the fumed silica or the alumina accounts for 80% by mass or more of the inorganic particles in the second ink receiving layer.

Abstract: A recording medium includes in this order a water-resistant substrate, a first ink receiving layer, and a second ink receiving layer that is the outermost layer. The first ink receiving layer contains a fumed silica and a binder. The second ink receiving layer contains a colloidal silica having an average primary particle diameter of 50 nm or more and 100 nm or less, and a polyvinyl alcohol having a silanol group.

Abstract: A recording medium includes a substrate, and a first and a second ink receiving layer over the substrate in this order from the side close to the substrate. The first ink receiving layer contains fumed silica, alumina, and zirconium compound. In the first ink receiving layer, the mass ratio of the fumed silica to the alumina is in the range of 40:60 to 60:40. The zirconium compound content in the first ink receiving layer is in the range of 0.1% by mass to 3.0% by mass relative to the total mass of the first ink receiving layer. The second ink receiving layer contains inorganic particles including at least one of fumed silica and alumina. In the second ink receiving layer, the fumed silica or the alumina accounts for 80% by mass or more of the inorganic particles in the second ink receiving layer.

Abstract: A recording medium includes a substrate and an ink-receiving layer as the top layer. The ink-receiving layer contains inorganic particles. The inorganic particles contain cationized colloidal silica, alumina hydrate, and fumed alumina. A content of the cationized colloidal silica is 5% or more by mass and 25% or less by mass based on a content of the inorganic particles. The mass ratio of the alumina hydrate to the fumed alumina (alumina hydrate content:fumed alumina content) is from 95:5 to 55:45.

Abstract: A recording medium includes a substrate and an ink receiving layer that includes inorganic particles and a binder. The inorganic particles include fumed silica particles. The binder includes a resin having a glass transition temperature of 20° C. or less. The content of the binder in the ink receiving layer is 40% by mass or more of the content of the inorganic particles included in the ink receiving layer.

Abstract: A recording medium includes a substrate and an ink receiving layer that includes inorganic particles and a binder. The inorganic particles include at least one type of alumina particles selected from fumed alumina particles and hydrated alumina particles. The binder includes a resin having a glass transition temperature of 20° C. or less. The content of the binder in the ink receiving layer is 25% by mass or more of the content of the inorganic particles included in the ink receiving layer.