An example of a system for selecting print mode configurations is disclosed. The example disclosed herein comprises an array of nozzles to eject ink, and a controller. The controller is to instruct the array of nozzles to print a plurality of color patches, each color patch being printed using different nozzle setting values. Also, the controller is to receive a sensor signal from each color patch from a color sensor. The controller is further to derive color saturation and/or density measurement information from the sensor signals; and to select a print mode configuration based on the color saturation and/or density measurement information.

Pixel blocks of a user-generated print job raster page are clustered into raster color clusters, and pixel blocks of a corresponding scanned page are clustered into scanned color clusters. For each raster color cluster, if a color difference between the cluster and a corresponding scanned color cluster is greater than a threshold, color fading of the cluster is determined from simulated depletion of each colorant of a printing device, and a likely depleted colorant is determined based on the corresponding scanned color cluster and the determined color fading. A most likely depleted colorant is determined from the likely depleted colorant predicted for each raster color cluster for which the determined color difference is greater than the threshold.

A graphics adaptation method for printable ceramic supports. Images are printed on sample ceramic supports starting from an original image file. A sample printed image is acquired. Sample points representative of the sample image are selected. Original points present in the original image file are also selected. A point-based matching is sought between the sample points and the original points, on the basis of which the original image file is modified and an adapted image file is determined, thus adapting the graphics of the original image file to the graphics of the sample image. A graphics adaptation system based on the method is also described.

An image forming apparatus includes: an image former that forms an image, which is desired by a user and different from a predetermined pattern, on a sheet; an output information detector that detects output information on a first image formed on a first sheet by the image former; and a hardware processor that: acquires an correction amount of a third image, which is formed on a third sheet after the first sheet and a second sheet, according to a detection result of the first image by the output information detector and image information on a second image formed on the second sheet after the first sheet by the image former; and controls the image former so as to correct the third image based on the correction amount acquired by the hardware processor.

In a data generating apparatus, a processor acquires offset information indicating a deviation in a colorant usage used by a specific print execution unit from a standard amount of usage. The standard amount of usage is a standard quantity concerning colorant used by print execution units. The processor controls the specific print execution unit to print a first patch image and generates first control data using first read data based on the first patch image. The processor generates corrected first control data using the offset information. The processor controls the specific print execution unit to print a second patch image using the corrected first control data and generates second control data using second read data based on the second patch image. The first and second control data is for common use in the printing processes performed on the print execution units.

According to one embodiment, an image processing apparatus includes an image reading device, a storage device, and a control unit. The image reading device reads an image on a sheet. The storage device stores information. The control unit that determines a detection area of an encoded image based on a teacher image which is an image read from a predetermined teacher sheet by the image reading device, records information indicating the detection area in the storage device, detects an encoded image in the detection area among the images read from a sheet to be read after the teacher sheet, and decodes the detected encoded image.

Provided are a color conversion table creation apparatus and method, a color conversion apparatus, and a program capable of further increasing color matching accuracy. A color conversion table creation apparatus includes an image reading unit (30) that acquires read image data of a target printed article, a first color conversion unit (64) that performs color conversion by using a first color conversion table representing a correspondence relationship between a signal value of a first color space obtained from the image reading unit (30) and a chromaticity value of a second color space which is a device-independent color space, an image correlation unit (62) that performs correlation of a positional relationship between the read image data or read chromaticity value image data converted into a chromaticity value and original document image data, and a color conversion table creation unit that creates a second color conversion table representing a multi-dimensional correspondence relationship between a third color space of the original document image data and a second color space on the basis of a correspondence relationship between the original document image data and a chromaticity value of a read image, in which a first printed article which is printed by a printing apparatus (18) on the basis of first image data is read by the image reading unit (30), and thus an output device color conversion table (94A) is created.

A method of printing comprises executing an output settings calibration procedure, the procedure comprising: depositing, by one or more printing elements, ink onto a first substrate according to respective output settings. The procedure further comprises measuring, by a sensor, an actual color value of the ink deposited onto the first substrate at plurality of locations. The procedure further comprises determining a difference between the actual color value and a target color value for each of the plurality of locations and determining adjusted respective output settings for each of the plurality of locations based on the determined difference. The method further comprises depositing, by the one or more printing elements, ink onto a second substrate according to the adjusted respective output settings.

In a data generating apparatus, a processor acquires offset information indicating a deviation in a colorant usage used by a specific print execution unit from a standard amount of usage. The standard amount of usage is a standard quantity concerning colorant used by print execution units. The processor controls the specific print execution unit to print a first patch image and generates first control data using first read data based on the first patch image. The processor generates corrected first control data using the offset information. The processor controls the specific print execution unit to print a second patch image using the corrected first control data and generates second control data using second read data based on the second patch image. The first and second control data is for common use in the printing processes performed on the print execution units.

Provided is an image processing apparatus that compares a color sample image and a document image, and performs color adjustment at a time of output of the document image, the image processing apparatus includes: storage that stores a color sample image and a document image; and a control part that compares the color sample image and the document image, and performs color adjustment, wherein the control part extracts a continuous region having a predetermined level or more of uniformity for a predetermined item, on the color sample image and the document image, compares accompanying information of each of images in the region, and selects a region of the color sample image corresponding to the region of the document image on the basis of a result of the comparison.