Abstract: A martensitic stainless steel sheet for a brake disc rotor, characterized by containing predetermined components and having, in a mother phase, precipitates with a particle size of 2 ?m or less and a density of 0.01 to 20 pieces/?m2. The precipitates finely present in hot rolling and hot-rolled sheet annealing improves productivity in hardening, improves temper softening resistance of the steel sheet in use as a component, inhibits cracking in hot stamping, and inhibits reduction in high-temperature strength. Accordingly, the martensitic stainless steel sheet excellent in temper softening resistance, hardenability, formability, and high-temperature strength that is applicable to the disc rotor is provided.

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: An ink set having a cyan ink, a magenta ink and a yellow ink. A combination of a cyan, magenta and yellow dye respectively contained in the cyan, magenta and yellow ink is selected so as to satisfy the condition that optical density retentions of images formed by a cyan ink for evaluation containing the cyan dye, a magenta ink for evaluation containing the magenta dye and a yellow ink for evaluation containing the yellow dye, as determined before and after an ozone resistance test with an integral ozone concentration of 800 ppm·hr and before and after a xenon light resistance test with an integral irradiance of 43,800 klx·hr, are 70% or more for each of the inks for evaluation and are such that a maximum value of differences of the optical density retentions among the images formed by the respective inks for evaluation is 15 or less.

Abstract: An ink jet ink contains at least a coloring material and a specific water-soluble organic solvent and has both excellent color developability and excellent humidity resistance. The coloring material exhibits a small (9 or less) color difference ?E value which is determined by a method including a series of specific steps and is represented as the square root of (L1?L2)2+(a1?a2)2+(b1?b2)2. The specific water-soluble organic solvent has an evaporation rate X smaller than that of water and a moisture absorptivity Y, the values of X and Y satisfying the relation of Y?2.8X+10. The content of the specific water-soluble organic solvent is 50 mass % or more of the total amount of water-soluble organic solvents contained in the ink.

Abstract: An ink set having a cyan ink, a magenta ink and a yellow ink. A combination of a cyan, magenta and yellow dye respectively contained in the cyan, magenta and yellow ink is selected so as to satisfy the condition that optical density retentions of images formed by a cyan ink for evaluation containing the cyan dye, a magenta ink for evaluation containing the magenta dye and a yellow ink for evaluation containing the yellow dye, as determined before and after an ozone resistance test with an integral ozone concentration of 800 ppm·hr and before and after a xenon light resistance test with an integral irradiance of 43,800 klx·hr, are 70% or more for each of the inks for evaluation and are such that a maximum value of differences of the optical density retentions among the images formed by the respective inks for evaluation is 15 or less.

Abstract: An ink jet ink contains at least a coloring material and a specific water-soluble organic solvent and has both excellent color developability and excellent humidity resistance. The coloring material exhibits a small (9 or less) color difference ?E value which is determined by a method including a series of specific steps and is represented as the square root of (L1?L2)2+(a1?a2)2+(b1?b2)2. The specific water-soluble organic solvent has an evaporation rate X smaller than that of water and a moisture absorptivity Y, the values of X and Y satisfying the relation of Y?2.8X+10. The content of the specific water-soluble organic solvent is 50 mass % or more of the total amount of water-soluble organic solvents contained in the ink.

Abstract: The present invention provides an ink jet ink having a magenta color which gives an image excellent in magenta color tone and also excellent in image fastness (lightfastness and gas resistance). The ink jet ink includes a first coloring material that is an anthrapyridone compound having a structure represented by general formula (I) and/or general formula (II) and a second coloring material that is an azo compound having a structure represented by general formula (III), wherein the mass ratio of the content of the first coloring material to the content of the second coloring material is from 2.5 or more to 10.0 or less.

Abstract: An ink having a cyan color is provided which can form images excellent in ozone resistance in such a high level as to exceed anticipation and having a preferable color tone. The ink includes at least two coloring materials of a first coloring material and a second coloring material, wherein the first coloring material is a compound having a copper phthalocyanine skeleton with a specific structure and the second coloring material is a compound having a copper phthalocyanine skeleton with a specific structure that is different from the first coloring material.

Abstract: An ink containing at least two coloring materials of a first coloring material and a second coloring material, wherein the first coloring material is a compound represented by the general formula (I), and the second coloring material is a compound represented by the general formula (II):

Abstract: Provided is an ink jet ink having a yellow color including at least two coloring materials of a first coloring material and a second coloring material, the first coloring material being a compound represented by the following general formula (I) and the second coloring material being a coloring material having a pH buffering ability.

Abstract: Provided is a black ink which provides an image with excellent color tone, little color tone change after a light fastness test and excellent balance of color tone change and light fastness. The black ink further provides an image with a gradation property having a color tone close to a neutral color tone even before and after a light fastness test.

Abstract: An ink containing at least two coloring materials of a first coloring material and a second coloring material, wherein the first coloring material is a compound represented by the general formula (I), and the second coloring material is a compound represented by the general formula (II):

Abstract: Provided is a black ink which provides an image with excellent color tone, little color tone change after a light fastness test and excellent balance of color tone change and light fastness. The black ink further provides an image with a gradation property having a color tone close to a neutral color tone even before and after a light fastness test. The ink contains at least a compound represented by the general formula (I) as a first coloring material, a compound represented by the general formula (II) as a second coloring material and a compound represented by the general formula (III) as a third coloring material.

Abstract: An ink having a cyan color is provided which can form images excellent in ozone resistance in such a high level as to exceed anticipation and having a preferable color tone. The ink includes at least two coloring materials of a first coloring material and a second coloring material, wherein the first coloring material is a compound having a copper phthalocyanine skeleton with a specific structure and the second coloring material is a compound having a copper phthalocyanine skeleton with a specific structure that is different from the first coloring material.

Abstract: The present invention provides an ink jet ink having a magenta color which gives an image excellent in magenta color tone and also excellent in image fastness (lightfastness and gas resistance). The ink jet ink includes a first coloring material that is an anthrapyridone compound having a structure represented by general formula (I) and/or general formula (II) and a second coloring material that is an azo compound having a structure represented by general formula (III), wherein the mass ratio of the content of the first coloring material to the content of the second coloring material is from 2.5 or more to 10.0 or less.

Abstract: Provided is an ink jet ink having a yellow color including at least two coloring materials of a first coloring material and a second coloring material, the first coloring material being a compound represented by the following general formula (I) and the second coloring material being a coloring material having a pH buffering ability.

Abstract: A semiconductor device includes at least one semiconductor structure which has a plurality of external connection electrodes formed on a semiconductor substrate. An insulating sheet member is arranged on the side of the semiconductor structure. Upper interconnections have connection pad portions that are arranged on the insulating sheet member in correspondence with the upper interconnections and connected to the external connection electrodes of the semiconductor structure.

Abstract: An ink jet ink is provided with which metallic luster appearing in printing on a recording medium, i.e. the bronze phenomenon is kept from occurring and good images can be obtained. The ink jet ink includes at least a coloring material which is a compound represented by a specific general formula, and further contains a specific amine compound.

Abstract: Provided is an ink jet ink containing a coloring material having a buffer region in an ink use range, the ink jet ink being capable of suppressing the occurrence of the deterioration (dissolution) of a heating portion surface in contact with liquid; and the disconnection of wiring for applying a voltage to a heating portion even when long term continuous printing is performed. The ink jet ink is used for an ink jet recording apparatus equipped with a recording head having a heating portion surface in contact with liquid comprising a metal and/or a metal oxide. The ink jet ink contains a coloring material in a content (mass %) of 3 mass % or more with respect to the total mass of the ink jet ink. The coloring material is a colorant having a buffer region in an ink use range, and comprises a compound represented by the following general formula (I) and/or a compound represented by the following general formula (II) H(OCH2CH2)pR5.