A method of printing an image using a printing system including at least first and second overlapping printhead segments, the method includes the steps of: feeding media past the printhead segments along a media feed direction; determining an extent of wander of the media in a direction perpendicular to the media feed direction; selecting a stitching method based on the determined extent of wander; and printing the image using the first and second printhead segments. The printing step includes stitching the first and second printhead segments using the selected stitching method.

Printing methods and devices identify distortable ink colors in a print job. These distortable ink colors interact with one another when printed in the same printing pass on the same area of a sheet. These methods and devices control printheads and sheet feeders to separately print the distortable ink colors in different print passes.

There is provided a printer including: a printing part which is provided with: a conveyor configured to convey a medium in a conveying direction, a printing head having a plurality of nozzles from which an ink of a specified color is discharged and of which positions in the conveying direction are mutually different, the printing head being configured to discharge the ink from the plurality of nozzles to the medium so as to form dots in the medium, and a facing member configured to be capable of facing a print surface of the medium on an upstream side in the conveying direction with respect to the plurality of nozzles of the printing head; and a controller.

There is provided a printing apparatus including: a head having nozzles aligned in a first direction, a manifold, and a driving element; a first temperature sensor configured to detect, in the manifold, a temperature difference between a temperature of the ink at an upstream in the first direction and a temperature of the ink at a downstream in the first direction; and a controller. The nozzles have a first nozzle and a second nozzle. The controller is configured to execute: causing of the head to perform printing, and performing of position correction of correcting a discharge timing of the ink from the nozzles based on the temperature difference so that a distance between a landing position of the ink discharged from the first nozzle and a landing position of the ink discharged from the second nozzle becomes short in a second direction crossing the first direction.

A printing apparatus includes: a print execution section and a controller. The print execution section includes: a printing head having nozzles, an ink having a specified color being discharged from the nozzles; a head driver which drives the printing head to form dots having the specified color on a printing medium by discharging the ink having the specified color from the nozzles; and a movement mechanism which moves the printing medium relative to the printing head. The controller is configured to: obtain object image data; generate, by using the object image data, a plurality of pieces of dot data indicating formation states of the dots having the specified color, for a plurality of pixels; and print a printing image by causing the print execution section to execute discharge of the ink having the specified color and movement of the printing medium by use of the pieces of dot data.

A liquid discharge apparatus includes a recording device and a recording controller. The recording controller alternately performs a main scanning control and a sub-scanning control. The main scanning control controls discharging liquid while moving the recording device and a recording medium relative to each other in a main scanning direction. The sub-scanning control controls the recording device to discharge the liquid from at least two recording elements of the recording device, in accordance with at least two times of the main scanning control performed at positions on the recording medium in a sub-scanning direction. The recording device discharges the liquid, within a range in the sub-scanning direction corresponding to a position of the recording head. The recording controller performs the main scanning control for discharging the liquid based on discharge order mask patterns different from each other in a plurality of regions in the main scanning direction.

An ink-jet recording apparatus includes a recording head, an ink reservoir portion, an ink amount sensor, a dot counter, and a control portion. The ink reservoir portion stores ink to he ted to the recording head. The ink amount sensor senses the amount of ink in the ink reservoir portion. The dot counter for measures in a cumulative manner the number of dots in the ink ejected from the recording head. The control portion changes the amount of ink ejected from the recording head based on the difference between a calculated value of the amount of consumed ink as calculated based on the cumulative number of dots measured by the dot counter and a measured value of the amount of consumed ink as determined based on the amount of ink in the ink reservoir portion as sensed by the ink amount sensor.

A printing apparatus includes: a conveying roller which conveys a print medium in a conveying direction; a line head having first and second nozzle rows arranged in the conveying direction; and a controller. Each of the first and second nozzle rows includes nozzles aligned along a width direction orthogonal to the conveying direction. The nozzles are configured to discharge liquid, and the nozzles in the first nozzle row and the nozzles in the second nozzle row are shifted in the width direction. The first nozzle row has: first nozzles forming a group; and second nozzles forming a group adjacently in the width direction to the group of first nozzles in the first nozzle row. The second nozzle row has: first nozzles forming a group; and second nozzles forming a group adjacently in the width direction to the group of first nozzles in the second nozzle row.

An image inspection device includes: an inspection condition setting unit for setting, as an inspection condition, a determination criterion when detecting a defective image; an imaging unit that performs capturing a print image and outputs a captured image obtained by the capturing; and a defective image detection unit that detects a defective image from the captured image on the basis of the inspection condition. The inspection condition setting unit is configured to be able to set, as the inspection condition, first parameter values and second parameter values that are two different determination criteria. The defective image detection unit performs first detection processing of detecting a defective image from the captured image on the basis of the first parameter values and second detection processing of detecting a defective image from the captured image on the basis of the second parameter values.

A print unit includes a reactive liquid element row in which a plurality of print elements are arrayed in a first direction, a first element row in which a plurality of print elements are arrayed in the first direction, and a second element row in which a plurality of print elements are arrayed in the first direction. The reactive liquid element row, the first element row, and the second element row are arrayed in this order in a second direction perpendicular to the first direction. A scan unit scans the print unit in the second direction. A print control unit controls a print operation by the print unit such that a ratio of the number of pixels permitted to eject the second ink to the number of pixels in a predetermined region on the print medium does not exceed a threshold.