Abstract: An object of the present invention is to provide, in order to quantify a detection target substance contained in a specimen, a specimen diluent capable of reducing an influence of contaminants, that is, noise with respect to a quantitative value of a detection target to obtain favorable signal sensitivity, a method for preparing a sample, a sample, and a sandwich method. A specimen diluent of the present invention is a specimen diluent used in a sandwich method, the specimen diluent containing 10 mM to 500 mM of a compound having a structure represented by formula (I) and 10 mM to 500 mM of a compound having a thiol group.

Abstract: A measurement device is for measuring a sample arranged on a thick film transparent medium. In the measurement device, a light projecting surface, a light receiving surface, the thick film transparent medium, and a sample are set so as to satisfy the following formula (?) for eliminating noise light reflected from a back surface of the thick film transparent medium: h<(L/n3)·?((2H/D2)·(2H/D2)?n3·n3+1) . . . Formula (?). In formula (?), h denotes a distance from the light receiving surface to the sample, L denotes a half of an interval between the light projecting surface and the light receiving surface, n3 denotes a refractive index of the thick film transparent medium, H denotes a thickness of the thick film transparent medium, and D2 denotes an aperture of the light receiving surface.

Abstract: [Problem] An object of the present invention is to provide a method by which the amount of a very small amount of analyte (in particular, one having a sugar chain) can be measured with a high accuracy and a device which is used for said measurement method. [Means for Solution] The method for measuring the amount of an analyte according to the present invention is characterized in that a lectin labeled with a fluorescent dye, preferably said lectin whose dissociation rate constant [kd] is from 1.0×10?6 to 1.0×10?3 (S?1), is used as a secondary antibody in a sandwich assay using a surface plasmon excitation enhanced fluorescence spectroscopy [SPFS; Surface Plasmon-field enhanced Fluorescence Spectroscopy].

Abstract: A surface plasmon-field enhanced fluorescence spectroscopy [SPFS] sensor chip may include a transparent support, a metal thin film formed on one surface of the transparent support, a self-assembled monolayer [SAM] formed on a surface of the metal thin film, said surface not being in contact with the transparent support, a solid phase layer formed on a surface of the SAM and having a three-dimensional structure, said surface not being in contact with the metal thin film, and a ligand immobilized in the solid phase layer. A fluctuation ratio represented by the following formula is not less than 0% but not more than 30%: {half-width (?)?half-width (?)}/half-width (?)×100.

Abstract: An object is to provide an electrostatic charge image developing toner and an image forming method using the same capable of maintaining image properties for a long duration, which exhibit not only sufficient transparency and chromaticness, accompanied with high color reproduction and excellent charging characteristic, but also excellent heat resistance, together further with excellent light fastness and sufficient image holding ability. Disclosed is an electrostatic charge image developing toner of the present invention comprising a binder resin for toner particle formation and colorant particles dispersed in the binder resin, wherein the colorant particles comprise a dye and an antioxidant. Further, the electrostatic charge image developing toner wherein a volume-based median particle diameter of the colorant particles is preferably 10-100 nm, and also the dye contained in the colorant particles is preferably an oil-soluble dye or a metal chelate dye.

Abstract: A water-based ink for ink-jet printing, comprising colored particles containing: (a) a core particle having a colorant; and (b) a shell having a resin and encapsulating the core particle, wherein the resin comprises a monomer unit having a hydroxyl group in an amount of 0.1 to 50 weight % based on the total weight of the shell.

Abstract: A water-based ink containing colored microparticles containing a dye and a polymer dispersed in water, wherein a total amount of a monomer remaining in the colored microparticles is less than or equal to 5000 ppm based on the total weight of the water-based ink.

Abstract: An electrophotographic toner is disclosed. The toner is composed of a dye chelatable with a metal represented by the formula (1) and a copper compound represented by the formula (2) and a thermoplastic resin: In the formula, R1, R2, R3, and R4 each represents a hydrogen atom or a substituent. Z1 represents a 5 or 6-membered heterocyclic ring containing at least one nitrogen atom, which heterocyclic ring may have a substituent or form a condensed ring. Z2 represents a 5 or 6-membered heterocyclic ring which heterocyclic ring may have a substituent or form a condensed ring. Cu2+(X1)m(X2)n.W1 ??formula (2) wherein X1 and X2 are each a monodentate or didentate ligand, provided that X1 and X2 may link with each other which may be the same or different from each other; n and m are each an integer of 0 to 2; W1 is a counter ion when a counter ion is required for neutralization of charge.

Abstract: A dispersion of colored particles is disclosed. The dispersion is prepared by emulsifying a mixture comprising a colorant and polymer, employing a reactive emulsifier, and subsequently copolymerizing the resulting mixture, employing polymerizable monomer. An ink employing the dispersion is also disclosed.

Abstract: An object is to provide an electrostatic charge image developing toner and an image forming method using the same capable of maintaining image properties for a long duration, which exhibit not only sufficient transparency and chromaticness, accompanied with high color reproduction and excellent charging characteristic, but also excellent heat resistance, together further with excellent light fastness and sufficient image holding ability. Disclosed is an electrostatic charge image developing toner of the present invention comprising a binder resin for toner particle formation and colorant particles dispersed in the binder resin, wherein the colorant particles comprise a dye and an antioxidant. Further, the electrostatic charge image developing toner wherein a volume-based median particle diameter of the colorant particles is preferably 10-100 nm, and also the dye contained in the colorant particles is preferably an oil-soluble dye or a metal chelate dye.

Abstract: An ink-jet recording ink is disclosed. The ink contains colored particles each composed for Resin A containing a colorant, or colored particles each comprising a core composed of Resin A containing a colorant and a shell composed of Resin B covering the core, a water miscible solvent and water, and absorption coefficient “a” of the ink as itself and absorption coefficient “b” of the ink in which the colorant is dissolved satisfy the relation of 0.50?a/b?0.95.

Abstract: A colored particle aqueous dispersion and a water based ink containing the dispersion are disclosed, the colored particle aqueous dispersion containing colored particles comprising a colorant and a resin, wherein the difference in solubility parameter (SP) between the colorant and the resin is not more than 4.0 (J/cm3)1/2.

Abstract: A water-based ink comprising water and at least one kind of colored particles selected from the group consisting of: (a) colored particles comprising a polymer containing a colorant; (b) colored particles comprising a core forming colorant and a shell forming polymer which encapsulates the core forming colorant; and (c) particles comprising a core forming polymer containing a colorant and a shell forming polymer which encapsulates the core forming polymer, wherein the initial elution value of the colorant of the colored particles being measured in a colorant dissolving solvent is at most 10% of the maximum elution value.

Abstract: A dye is disclosed, which is represented by the following formula: wherein Z is an atomic group necessary to form a 6-membered nitrogen containing aromatic ring; R11 is a hydrogen bonding group; R12, R13 and R14 are independently a hydrogen atom or a substituent; n11 and n13 are each an integer of 1 to 4; n12 is an integer of 1 to 3. There is also disclosed an ink for ink jet printing which contains the foregoing dye.

Abstract: A water-based ink containing colored microparticles containing a dye and a polymer dispersed in water, wherein a total amount of a monomer remaining in the colored microparticles is less than or equal to 5000 ppm based on the total weight of the water-based ink.

Abstract: A water-based ink comprising colored particles, which comprise a dye and a polymer having an acetal group.

Abstract: A polymer dispersion comprising water and polymer particles having a size of 5 to 500 nm in volume average diameter and having a core-part and a shell-part in each of the polymer particles, wherein the core-part and the shell-part each comprise a colorant and a polymer, and the shell-part contains the colorant in an amount of not more than 80 weight % of the colorant in the core-part.

Abstract: An ink-jet image recording method is disclosed. In the method an aqueous ink containing a colored particles comprising a colorant and a resin is employed, and following Formula 1 is satisfied; 15≦w≦150  Formula 1 wherein, w is a parameter expressed by following Formula 2; w=[(dm+ds)/{(NV×vd)/r3}]×10,000  Formula 2 wherein, ds is a recording density in dpi in a moving direction of the recording medium and dm is a recording density in dpi in a direction perpendicular to the moving direction of the recording medium, NV is the colored particle content in the ink in weight percent, vd is a volume average radius in meter of the colored particles and r is radius in meter of the ink droplet.

Abstract: A dye is disclosed, which is represented by the following formula: 1

Abstract: A dispersion of colored particles is disclosed. The dispersion is prepared by emulsifying a mixture comprising a colorant and polymer, employing a reactive emulsifier, and subsequently copolymerizing the resulting mixture, employing polymerizable monomer. An ink employing the dispersion is also disclosed.