Abstract: The present invention is to provide a flexographic printing plate having excellent ink uniformity in an image area, particularly, in a solid portion regardless of a printing speed, a method for manufacturing the flexographic printing plate, and a flexographic printing plate precursor used in the manufacturing of the flexographic printing plate.

Abstract: The present invention is to provide a flexographic printing plate having high ink transferability and making it possible to perform printing with a high ink density in a solid portion, a flexographic printing plate precursor, a method for manufacturing a flexographic printing plate, and a method for manufacturing a flexographic printing plate precursor. A flexographic printing plate includes a relief layer including a non-image area and an image area having an uneven structure formed on a surface thereof, in which an average length RSm of roughness curve elements of the surface of the image area having the uneven structure is 15 to 120 ?m, an oil-retention volume A2 is 2 to 180, and a load length ratio Rmr 30% at a cutting level of 30% is 20% to 90%.

Abstract: The present invention is to provide a flexographic printing plate having high ink transferability and making it possible to perform printing with a high ink density in a solid portion, a flexographic printing plate precursor, a method for manufacturing a flexographic printing plate, and a method for manufacturing a flexographic printing plate precursor. A flexographic printing plate of the present invention includes a relief layer including a non-image area and an image area having an uneven structure formed on a surface, in which the uneven structure is composed of recessed portions consisting of a plurality of grooves and projecting portions other than recessed portions, each of the plurality of grooves has a length of at least 30 ?m, all of the plurality of grooves are grooves having a line edge roughness in a range of 0.5 to 2.

Abstract: An object of the present invention is to provide a flexographic printing plate having excellent ink transferability in a solid portion and the like and having good printing quality in a halftone portion. The flexographic printing plate of the present invention is a flexographic printing plate having a relief layer including a non-image area and an image area, in which the image area has a halftone dot portion having a halftone dot area ratio of more than 0% and less than 100%, and a solid portion having a halftone dot area ratio of 100%, small dots in the halftone dot portion and the solid portion or small dots in the halftone dot portion have two or more recessed portions having different depths according to a halftone dot area ratio, and the two or more recessed portions having different depths are recessed portions whose depth becomes deeper as the halftone dot area ratio increases.

Abstract: The present invention is to provide a flexographic printing plate having high ink transferability and making it possible to perform printing with a high ink density in a solid portion, a flexographic printing plate precursor, a method for manufacturing a flexographic printing plate, and a method for manufacturing a flexographic printing plate precursor. A flexographic printing plate includes a relief layer including a non-image area and an image area having an uneven structure formed on a surface thereof, in which an average length RSm of roughness curve elements of the surface of the image area having the uneven structure is 15 to 120 ?m, an oil-retention volume A2 is 2 to 180, and a load length ratio Rmr 30% at a cutting level of 30% is 20% to 90%.

Abstract: An object of the present invention is to provide a flexographic printing plate having excellent ink transferability in a solid portion and the like and having good printing quality in a halftone portion. The flexographic printing plate of the present invention is a flexographic printing plate having a relief layer including a non-image area and an image area, in which the image area has a halftone dot portion having a halftone dot area ratio of more than 0% and less than 100%, and a solid portion having a halftone dot area ratio of 100%, small dots in the halftone dot portion and the solid portion or small dots in the halftone dot portion have two or more recessed portions having different depths according to a halftone dot area ratio, and the two or more recessed portions having different depths are recessed portions whose depth becomes deeper as the halftone dot area ratio increases.

Abstract: The present invention is to provide a flexographic printing plate having high ink transferability and making it possible to perform printing with a high ink density in a solid portion, a flexographic printing plate precursor, a method for manufacturing a flexographic printing plate, and a method for manufacturing a flexographic printing plate precursor. A flexographic printing plate of the present invention includes a relief layer including a non-image area and an image area having an uneven structure formed on a surface, in which the uneven structure is composed of recessed portions consisting of a plurality of grooves and projecting portions other than recessed portions, each of the plurality of grooves has a length of at least 30 ?m, all of the plurality of grooves are grooves having a line edge roughness in a range of 0.5 to 2.

Abstract: Provided are a flexo printing plate, which makes it possible to print an image without unevenness by inhibiting bouncing that occurs in a case where the distal end of an image portion of a printing plate contacts a printing target, and a method for producing a flexo printing plate. A region that extends 0.5 mm to 5 mm from a distal end side of the image portion in a printing direction is a lowered region having a height shorter than a height of the image portion other than the region, and the lowered region is gradually lowered toward a non-image portion in a direction orthogonal to the edge on the distal end side of the image portion.

Abstract: The present invention is to provide a flexographic printing plate having excellent ink uniformity in an image area, particularly, in a solid portion regardless of a printing speed, a method for manufacturing the flexographic printing plate, and a flexographic printing plate precursor used in the manufacturing of the flexographic printing plate.

Abstract: Provided is a flexo printing plate which enables printing that inhibits the occurrence of voids in the rear end portion of an image portion while preventing decrease in solid density and prevents discontinuity of density from becoming visible. The flexo printing plate has one or more image portions, and in at least one of the image portions, a plurality of depressions having a predetermined width measured from the edge is formed. The depressions have a depth of 2 ?m to 9 ?m, and an area ratio of the depressions in the end region is a maximum at the edge side and a minimum at the central side of the image portion.

Abstract: An attentional portion to be corrected in gradation of an image is specified, and a gradation corrective function with respect to a density of the specified attentional portion is generated. Preset gradation conversion characteristics are corrected with the gradation corrective function, and the gradation of the image is converted according to the corrected gradation conversion characteristics. The gradation conversion characteristics can be corrected in the vicinity of a desired density.

Abstract: A color conversion definition creating apparatus is capable of creating a color conversion definition that defines a color conversion from a three-dimensional color space to a four or more-dimensional color space with greater accuracy. The color conversion definition creating apparatus comprises the reference definition obtaining section, the range computing section, the correspondence function obtaining section, the component determination section, and the correspondence computing section.

Abstract: An attentional portion to be corrected in gradation of an image is specified, and a gradation corrective function with respect to a density of the specified attentional portion is generated. Preset gradation conversion characteristics are corrected with the gradation corrective function, and the gradation of the image is converted according to the corrected gradation conversion characteristics. The gradation conversion characteristics can be corrected in the vicinity of a desired density.

Abstract: An attentional portion to be corrected in gradation of an image is specified, and a gradation corrective function with respect to a density of the specified attentional portion is generated. Preset gradation conversion characteristics are corrected with the gradation corrective function, and the gradation of the image is converted according to the corrected gradation conversion characteristics. The gradation conversion characteristics can be corrected in the vicinity of a desired density.

Abstract: An image structure reproduction quality creating method comprises steps of: obtaining test image data in which an input device reads test image outputted from an output device; extracting a reproduction state of an image structure of the test image subjected to reading and outputting in accordance with the test image data; and creating an image structure reproduction quality representative of a reproduction ability of an image structure, wherein the output device outputs an image, in accordance with the reproduction state and image structure reproduction quality representative of a reproduction ability of an image structure wherein the input device reads an image and obtains image data.

Abstract: A smoothing circuit smoothes lookup tables generated by a color conversion table generator, using a filter function selected from a filter function storage circuit, and supplies smoothed lookup tables to a color processing circuit. Density data supplied from a calibration circuit are converted into halftone dot % data according to the smoothed lookup tables. The halftone dot % data are interpolated and then converted into LD control data, which are supplied to laser diodes.

Abstract: An attentional portion to be corrected in gradation of an image is specified, and a gradation corrective function with respect to a density of the specified attentional portion is generated. Preset gradation conversion characteristics are corrected with the gradation corrective function, and the gradation of the image is converted according to the corrected gradation conversion characteristics. The gradation conversion characteristics can be corrected in the vicinity of a desired density.

Abstract: Hue, lightness, and saturation signals are obtained from an input signal, and hue direction intensity signals with respect to respective unit colors are determined using color corrective intensity functions for respective hues which have been established based on measured values. These hue direction intensity signals are multiplied into corrected intensity signals with respect to the respective colors, which are multiplied by desired correction coefficients. Resulting product signals for the respective unit colors are added into corrected signals with respect to given color signals.

Abstract: An apparatus for processing a digitized image signal includes a random-number generator for generating random-number data, an adder for adding input digital image data and random-number data outputted from the random-number generator, into sum data, and an image processor for processing the sum data from the adder.

Abstract: A readout region with a plurality of zones at grid points is scanned by a transparency or reflection reader to obtain any image data therefrom. Then, a variance of each of three primary colors of the image data is calculated, and compared with a predetermined threshold value to determine whether an original is present in the readout region. When at least one of the variances of the three primaries is greater than the threshold value, then it is determined that an original is present in the readout region.