A print medium having a calibration pattern printed thereon for generating alignment data for a printhead. The calibration pattern contains rows of spaced apart fiducials, each fiducial having a plurality of concentric shapes representing a Barker code.

When an image recording apparatus records an specific image over a boundary between a first dot formation range where dots are to be formed in a preceding recording operation of two consecutive recording operations and a second dot formation range where dots are to be formed in a subsequent recording operation of the two consecutive recording operations, the apparatus sets, as a correction portion, an end portion in a scanning direction of a specific region including at least one of a first boundary region adjacent to the second dot formation range and a second boundary region adjacent to the first dot formation range in the specific image, and forms the dot placed at the correction portion by discharging liquid of a discharge amount smaller than the discharge amount set for a dot element corresponding to the dot from nozzles.

In an example, there is provided a method and apparatus for generating a print output file, the method comprising receiving at least one image to be printed, determining a printing area corresponding to a region containing the at least one image to be printed and a non-printing area corresponding to a remaining region, providing a spit-on-page dot pattern limited to the non-printing area, and generating the print output file comprising the dot pattern and the at least one image.

After printing cue marks and front surface images on the front surface of web paper by a printing station, an image data elongation-contraction processor creates corrected back surface image data based on elasticity information, and a printing station prints back surface images based on the corrected back surface image data, on the back surface of the printing medium. At this time, a page interval calculator calculates a page interval from an interval between the cue marks detected by a detector, and a difference computing unit calculates differences between the page interval and image size in a transport direction of the corrected back surface image data. Since these differences indicate shifts of the correction based on the elasticity information, optimal elasticity information can be set by revising the elasticity information with these differences through a setting unit. Consequently, the operator of the apparatus can easily set optimal elasticity information based on the differences.

the ejection amount per ejection from the nozzle when the distance between the nozzle and the recording medium is the first distance is equal to the ejection amount per ejection from the nozzle when the distance between the nozzle and the recording medium is the second distance.

There is provided an image forming apparatus that forms an image with a plurality of coloring materials on a recording medium, and the image forming apparatus includes: a hardware processor that calculates a chromaticity range having a color difference not less than a setting value to respective chromaticities of the plurality of coloring materials for use in formation of the image, as a base color range common between the plurality of coloring materials.

A head unit includes: X (X≥2) of first type nozzles configured to discharge a first type liquid droplet, and W (1≤W<X) of a second type nozzle configured to discharge a second type liquid droplet. The head unit generates first data forming a first dot pattern and indicating a preceding first type dot area as an area in which the first type liquid droplet is to be discharged, and a preceding second type dot area as an area in which the second type liquid droplet is to be discharged; and second data for forming a second dot pattern and indicating a succeeding first type dot area as an area in which the first type liquid droplet is to be discharged, and a succeeding second type dot area as an area in which the second type liquid droplet is to be discharged.

A print device is provided with a background head that discharges a background ink onto a recording medium, a color head that discharges a color ink onto the recording medium, and a CPU that controls the background head and the color head. The CPU of the print device divides the background ink into a plurality of layers including a first background layer and a second background layer, and discharges the background ink from the background head. A first discharge region of the first background layer is further to an inner side than a second discharge region of the second background layer.

Disclosed is a printing device including: a first nozzle that ejects a first ink; a second nozzle that ejects a second ink; a third nozzle that ejects a third ink; and at least one processor that, upon performing alignment adjustment of one nozzle preparing one of the first nozzle and any of the second nozzle and the third nozzle for alignment pattern printing and the other of the first nozzle and any of the second nozzle and the third nozzle for auxiliary printing, controls to eject any of the first to third inks selected based on ejection information from among the second ink in the second cartridge and the third ink in the third cartridge, from any of the first to third nozzles for the alignment pattern printing or the auxiliary printing. The first ink, the second ink and the third ink have different colors from each other.

A three-dimensional object printing method includes a first test printing step of printing a first test pattern in a first region of a workpiece by a head unit while a position of the head unit being changed by a robot, a first detection step of detecting the first test pattern, and a first printing step of printing a first pattern in the first region by the head unit based on a result detected in the first detection step while the position of the head unit being changed by the robot.