In some examples, a supply component for a printing device includes a memory device comprising corrective data to produce a customized color table for a first color gamut, wherein the corrective data corresponds to nodes of a reference color table for the printing device that is able to employ a plurality of color gamuts for printing. The corrective data comprises a plurality of residual values to transform the nodes of the reference color table to the customized color table. The corrective data is accessible by the printing device to transform the reference color table to the customized color table used for printing to a media using the first color gamut.

An image processing apparatus includes a calibration section acquiring luminance characteristics of a display apparatus on a basis of a user manipulation for a calibration screen image displayed on the display apparatus, a luminance transforming section transforming a range of luminance composing a pixel value of an image into a range of luminance with which the image can be outputted as a display image on a basis of the luminance characteristics, and an output section outputting data associated with an image having the luminance after the transformation as a pixel value. The calibration section adjusts an initial state of the calibration screen image on a basis of information peculiar to the display apparatus, and then causes the calibration screen image to be displayed on the display apparatus.

Provided is a color compensation method in an image forming apparatus. The color compensation method may include imaging a first color chart by a first image forming apparatus, scanning the imaged first color chart, comparing information regarding the scanned first color chart and information regarding a reference color chart to determine an international color consortium (ICC) profile of the first image forming apparatus, and performing color compensation on the first image forming apparatus based on the determined ICC profile.

Printers can be desirably color matched irrespective of whether or not a specified color is a color in the gamut range. A client device 100 determines by a gamut range evaluator 232 whether or not a specified color is a color in the gamut range, which is the range of colors a second printer 50 can reproduce; causes a color chart data generator 235 to generate image data for producing a color chart referenced to the specified color when the specified color is a color in the gamut range; and causes the generator to select a color on the gamut surface based on the specified color when the specified color is a color outside the gamut range, and generate the image data to create the color chart referenced to the selected color.

A system, device and method for managing colors of a color printer in accordance with predetermined ink usages and cost objectives. Profiles comprising a corresponding set of job parameters are collected having an ink usage that satisfies a predetermined cost objective for the print job. Sheets are printed out in accordance with these acceptable profiles for proofing by a customer for image quality and selection of a profile to be used for the print job.

An object of the present disclosure is to implement, at a low cost, highly accurate color calibration in a printing apparatus that performs printing using fluorescent ink. One embodiment of the present invention is an image processing apparatus that includes: a processing unit configured to perform processing relating to color calibration in a printing apparatus that prints an image on a printing medium using fluorescent printing material; and an execution unit configured to perform calibration processing of the printing apparatus based on a measured value that is obtained by measuring a patch chart for obtaining information on an amount of application of the fluorescent printing material in the printing apparatus, wherein a patch included in the patch chart is printed with the fluorescent printing material and subtractive color mixture printing material and at least one dot of the subtractive color mixture printing material covers a dot of the fluorescent printing material.

An information processing apparatus includes circuitry to cause an image reading device to execute reading processing of a first color chart printed by a particular image forming apparatus of a plurality of image forming apparatuses and display, for each of the plurality of image forming apparatuses, a progress status of each stage of processing from the reading processing of the first color chart to registration processing of a profile generated based on color information data obtained by the reading processing of the first color chart.

An information processing apparatus includes a display and circuitry. The circuitry controls the display to display a first display field for displaying a first image of document data, a second display field for displaying a second image based on a first data generated by an image reading device reading a print sample, a third display field for displaying a third image based on a second data generated by the image reading device reading a printed matter printed out by an image forming apparatus based on the document data, and a fourth display field for displaying a fourth image after execution of color matching for color of the third image to be matched with color of the second image based on the document data.

In some examples, a fuser for a printing device includes a memory device comprising corrective data corresponding to a reference color table for the printing device that is able to operate in a plurality of different modes, the corrective data comprising quantized coefficients derived from a compression of a difference color table including a plurality of difference nodes in which each difference node represents a value that is to be combined with a corresponding node of the reference color table, the quantized coefficients useable to produce a reconstructed difference table. The corrective data including residue values to combine with the reconstructed difference table to produce a customized color table for a selected mode of the plurality of different modes.

A control apparatus capable of setting a suitable correction parameter while reducing user's troublesome. The control apparatus including a database that holds correction parameters for correcting pickup images to reduce color difference between pickup images of image pickup apparatuses in association with combinations of standard image pickup apparatus information and image pickup conditions of image pickup apparatuses, a memory device that stores instructions, and a processor that executes the instructions to obtain first information showing a standard image pickup apparatus at a present time and second information showing a target image pickup apparatus that picks up an image as a correction target at the present time, obtain the image pickup conditions of the image pickup apparatuses, determine a setting correction parameter that is set to the target image pickup apparatus from the database based on the first information and the image pickup conditions apparatuses, and output the setting correction parameter.