Abstract: Provided is a novel ink which is suitable for producing a color filter by use of an ink-jet system. The ink comprises a pyrazolone dye of the general formula (I): wherein R1 and R2 are each independently a hydrogen atom, an OH group, a halogen atom, a linear or branched alkyl group having 1 to 5 carbon atoms, a nitro group, a CF3 group or an SO3(M1) group, where M1 is an alkali metal or NH4; both R3 and R4 are an SO3(M2) group, where M2 is an alkali metal or NH4.

Abstract: It is an object of the present invention to provide a color filter with high color density and superior transparency. The color filter comprises red, green, and blue color elements. A relationship between a tristimulus value (Y) of a white color synthesized by the color elements and an area (S) for a triangle formed by connecting the xy chromaticity in the standard C light source of the above color elements each obtained based on a XYZ color system with a 2° visual field (JIS Z8701) meets the condition of Y≧−255*S+54.

Abstract: A color-filter manufacturing method which manufactures a color filter where occurrence of color mixture and colorless portion(s) are prevented while improving ink-arrival precision in applying ink onto a substrate. The method manufactures a color filter by discharging ink from an ink-jet head IJH on a substrate 53 so as to color respective pixels with a plurality of discharge ink. When ink I2 discharged from the ink-jet head IJH is applied not in the form of ink droplet but in the form of pillar onto the substrate 53, the ink I2 is applied at a position within a pixel, where the ink I2 is to mix with previously-applied ink I1.

Abstract: A novel ink is provided which comprises a metal complex azopyrazolone dye and a xanthene dye. This ink is suitable for forming a color filter by an ink-jet system. A color filter, a liquid crystal panel, and a computer employing the ink are also provided. Further, a process for producing the color filter is provided.

Abstract: A method for manufacturing a color filter comprises a step for charging an ink comprising a thermosetting resin composition onto an opening of a black matrix provided on a transparent substrate and a step for curing the ink by heat treatment. The thermosetting resin composition comprises either a coloring agent, a multifunctional epoxide having at least two glycidyl groups and a compound crosslinked by the multifunctional epoxide; or a coloring agent, a cellulose-reactive compound and a compound crosslinked by the cellulose-reactive compound.

Abstract: A method for manufacturing a color filter comprises a step for charging an ink comprising a thermosetting resin composition onto an opening of a black matrix provided on a transparent substrate and a step for curing the ink by heat treatment. The thermosetting resin composition comprises either a coloring agent, a multifunctional epoxide having at least two glycidyl groups and a compound crosslinked by the multifunctional epoxide; or a coloring agent, a cellulose-reactive compound and a compound crosslinked by the cellulose-reactive compound.

Abstract: A color filter having a wide color reproducing range and provided with green pixels having a high permeability. The color filter is provided with green pixels containing a water soluble dye A having the x- and y-chromaticity characteristics in the CIE chromaticity diagram as described below and a water soluble dye B having the spectroscopic characteristics as described below:Water soluble dye A: x-chromaticity is 0.190 to 0.280 when the y-chromaticity is 0.520 in a phosphate buffer solution comprising 60 mM/liter of Na.sub.2 HPO.sub.4.12H.sub.2 O and 16 mM/liter of KH.sub.2 PO.sub.4 at pH 7.5; andWater soluble dye B: Transmittance of light having a wavelength of 530 nm is 95% or more and transmittance of light having a wavelength of 450 nm is 50% or less in a phosphate buffer solution comprising 60 mM/liter of Na.sub.2 HPO.sub.4.12H.sub.2 O and 16 mM/liter of KH.sub.2 PO.sub.4 at pH 7.5.

Abstract: A method for making a color filter substrate includes the steps of: forming barriers on a substrate; placing an ink having a surface tension of 20 to 60 dyne/cm onto regions between the barriers; and curing the ink to form color filters. The volume of the ink charged onto one region is three to ten times the volume of the region. A color filter substrate is produced by the above-mentioned method. A liquid crystal device includes a pair of substrates and a liquid crystal encapsulated between the pair of substrates, wherein one of the pair of substrate is the above-mentioned color filter substrate.

Abstract: The present invention provides a color filter substrate including a color filter formed by patterning a colored resist, and a color filter formed by an ink jet method, and a liquid crystal display device having the color filter substrate. A method of manufacturing the color filter substrate includes the steps of forming a color filter by using a colored resist, and forming a color filter by an ink jet method.

Abstract: Disclosed herein is a process for producing a color filter for liquid crystal display device by applying inks to a base by an ink-jet printing system to arrange colorants on the base, which comprises the steps of applying inks, which each comprise a homopolymer of a monomer represented by the formula (I) ##STR1## or of the formula (II) ##STR2## wherein R.sub.1 is H or CH.sub.3, and R.sub.2 and R.sub.3 are independently H or an alkyl group having 1 to 5 carbon atoms, and/or a copolymer of the monomer with another vinyl monomer and can be cured by light or heat, directly onto the base or onto a resin layer provided on the base by the ink-jet printing system, thereby arranging colorants contained in the inks; and then curing the thus-applied inks by light exposure or heating.

Abstract: Disclosed is an apparatus for automatically measuring the amount of ink discharged from an inkjet printhead. A predetermined amount of pure water is injected into a measurement bottle, the bottle is supplied via an insertion port to a rotary table for measurement purposes, and the rotary table is rotated by 90.degree. to bring the bottle to a point immediately underlying a nozzle of the inkjet printhead. Ink is then discharged into the bottle from the printhead under set measurement conditions. The rotary head is then rotated a further 90.degree. to bring the bottle to a point in front of a photometer. At this time the ink solution is stirred thoroughly and the absorbance thereof is measured by the photometer. When measurement is completed, the rotary table is rotated a further 90.degree. to discard the bottle from a discharge port. These steps are automated by computer control.

Abstract: Disclosed herein is a color filter comprising a transparent base, and a light-screening resin layer, in which numbers of transparent areas and light-screening areas formed at margins of the transparent areas are arranged, and a filter resin layer, in which a plurality of transparent colored areas different in spectral characteristics from each other is repeatedly arranged in opposed relation to the transparent areas of the light-screening resin layer, successively formed on the transparent base.