854results about How to "Excellent tone" patented technology

An ink for ink jet recording and an ink jet recording method which realize an image quality of laser printer on a plain paper in a one-pass printing mode under conditions of a volume of an ink droplet ejected being 5 to 43 Pico liter, a velocity of an ink droplet being 6 to 20 m / sec, frequency of 1 kHz and resolution of 300 dpi or more. The ink for ink jet recording is a penetrating type ink which includes (1) at least one humectant selected from glycerin, 1,3-butandiol, triethyleneglycol, 1,6-hexanediol, propyleneglycol, 1,5-pentanediol, diethyleneglycol, dipropyleneglycol, trimethylolpropane and trimethylolethane, (2) colorant contained in the amount of 6% by weight or more, (3) a polyol having 8 to 11 carbon atoms and glycolether, and an anionic surfactants or non-ionic surfactants, the ink has viscosity of 5 mPa.s or more at 25° C. and a surface tension of 40 mN / m or less.

The present invention relates to a porphyrazine coloring matter represented by the following formula (1):(wherein, A, B, C and D independently represent a 6-membered ring having aromaticity, at least one or more of them are benzene rings and at least one or more of them contain nitrogen-containing heteroaromatic rings; E represents alkylene, X is a substituted anilino group and have at least one or more of sulfo group, carboxy group and phosphono group as a substituent, Y represents a hydroxy group or an amino group, b is respectively 0 to 2.9, c is 0.1 to 3, and the sum of b and c is 1 to 3) in free acid form, which is suitable for inkjet recording because it has good hue as a cyan ink, is excellent in light fastness, ozone fastness and moisture fastness, and does not cause bronzing phenomenon.

The invention relates to the technical field of color space conversion, and discloses a method and a system for processing RGB (Red, Green, Blue) data. The method comprises the following steps of S1, converting three input color values of R, G and B into an HSV (Hue, Saturation, Value) color space; S2, under the condition of remaining a hue H value and a saturation S of the HSV color space value unchanged, adjusting a value of brightness V; and S3, converting the H value, the S value and the V value processed through the step S2 into the RGBW (Red, Green, Blue, White) color space from the HSV color space, and displaying. The RGB color space is converted into the HSV color space, the brightness V is improved under the condition of remaining the H and the S in the HSV color space unchanged, and the HSV color space is converted into the RGBW color space, so that the brightness can be improved while better hue and color saturation are maintained and color transition is natural.