Abstract: An information processing apparatus, an information processing system, an information processing method, and a non-transitory recording medium. The information processing apparatus acquires colorimetric values from a patch of a target color with metallicity, the colorimetric values being measured by a colorimeter, calculates two or more physical quantities including a metallic value indicating a degree of metallicity and a color value indicating a degree of color from the colorimetric values, determines priority of the physical quantities of the target color, and derives an amount of metallic colorant and an amount of process color colorant in an image forming apparatus from the two or more physical quantities according to the priority.

Abstract: An information processing apparatus, an information processing system, an information processing method, and a non-transitory recording medium. The information processing apparatus acquires a print job, selects printing paper according to an operation on an operation device, acquires a color conversion dictionary from among color conversion dictionaries corresponding to respective representative paper sorted into a plurality of groups based on physical property of the selected printing paper, presents information on the color conversion dictionary through a display, receives an operation input indicating whether to accept or to reject a presented color conversion dictionary through the operation device, and converts color information of the print job using the color conversion dictionary accepted by the operation input received through the operation device.

Abstract: An information processing apparatus includes circuitry to derive, referring to a dictionary in which a target color having brightness and gloss is associated with a combination of amounts of color materials including one or more process color materials and a color material having brightness and gloss, amounts of the one or more process color materials and another amount of another color material, such that an amount corresponding to at least a part of the one or more process color materials corresponding to the target color in the dictionary is replaced with the another amount of the another color material. The combination of the amounts of color materials is for reproducing the target color included in an image formed by an image forming apparatus. The circuitry further updates the dictionary with the amounts of the one or more process color materials and the another amount of the another color material.

Abstract: An information processing apparatus, an information processing system, an information processing method, and a non-transitory recording medium. The information processing apparatus acquires colorimetric values from a patch of a target color with metallicity, the colorimetric values being measured by a colorimeter, calculates two or more physical quantities including a metallic value indicating a degree of metallicity and a color value indicating a degree of color from the colorimetric values, determines priority of the physical quantities of the target color, and derives an amount of metallic colorant and an amount of process color colorant in an image forming apparatus from the two or more physical quantities according to the priority.

Abstract: An image processing apparatus includes circuitry. The circuitry acquires colorant set information indicating at least one colorant set that reproduces a spot color. The circuitry classifies, according to colorant mounting information indicating a colorant mounted on an image forming apparatus, the at least one colorant set into first and second colorant sets. The spot color is reproduceable with the first colorant set without a replacement of the colorant mounted on the image forming apparatus. The spot color is reproduceable with the second colorant set with a replacement of the colorant mounted on the image forming apparatus. The circuitry displays the at least one colorant set on a display on which the at least one colorant set is identifiable as one of the first colorant set and the second colorant set. The circuitry receives a selection of the first colorant set that is used to reproduce the spot color.

Abstract: An image processing apparatus includes circuitry. The circuitry acquires colorant set information indicating at least one colorant set that reproduces a spot color. The circuitry classifies, according to colorant mounting information indicating a colorant mounted on an image forming apparatus, the at least one colorant set into first and second colorant sets. The spot color is reproduceable with the first colorant set without a replacement of the colorant mounted on the image forming apparatus. The spot color is reproduceable with the second colorant set with a replacement of the colorant mounted on the image forming apparatus. The circuitry displays the at least one colorant set on a display on which the at least one colorant set is identifiable as one of the first colorant set and the second colorant set. The circuitry receives a selection of the first colorant set that is used to reproduce the spot color.