An image forming apparatus includes: an extraction unit configured to extract an image for position detection from job image data; a first image forming unit configured to form the image for position detection on a recording medium; a second image forming unit disposed on a downstream in a feeding direction of the recording medium relative to the first image forming unit; a first detection unit configured to detect the image for position detection formed by the first image forming unit; and a determining unit configured to determine a correction amount of an image forming position of the second image forming unit based on a position of the image for position detection that is detected by the detection unit and a position of the image for position detection in the image data.

A printing system includes a substrate support, a printhead assembly positioned facing the substrate support, and an imager. The printhead assembly includes a plurality of dispensing nozzles extending in an ejection direction towards the substrate support and a plurality of marks. The imager is movable relative to the printhead assembly and oriented in a direction opposite to the ejection direction for capturing at least one image including the plurality of marks indicating positions of the plurality of dispensing nozzles in the printhead assembly.

In response to determining that a code image is to be formed such that a particular direction is same as a scanning direction, a controller performs divided recording processing of controlling a head and a carriage to: (a) record a plurality of first portions with liquid ejected from the head during a first movement of the head in the scanning direction; and (b) record a plurality of second portions with liquid ejected from the head during a second movement of the head in the scanning direction. The plurality of second portions are located at an at least partially different position from the plurality of first portions with respect to a conveyance direction. The second movement is a movement in a direction opposite the first movement. The second movement is performed after the first movement without performing conveyance processing between the first movement and the second movement.

A liquid discharging apparatus, having a liquid discharging head, a relatively-movable device, and a controller, is provided. The controller controls the liquid discharging head and the relatively-movable device to record a plurality of relative movement adjuster patterns, arranged at different positions in an arrayed direction, and a different pattern, arranged side by side with the plurality of relative movement adjuster patterns along a direction orthogonal to an arrayed direction on a same liquid-discharge objective medium. The controller controls the relatively-movable device, after recording at least one of the plurality of relative movement adjuster patterns, and before recording a next one of the plurality of relative movement adjuster patterns next to the at least one of the plurality of relative movement adjuster patterns, to perform a relative moving action by a moving amount different from a predetermined relative moving amount for recording the different pattern at least once.

On a sheet of paper on which an image has already been formed, a first registration mark pair and a second registration mark pair are printed. The first registration mark pair and second registration mark pair each consist of a pair of registration marks that are arranged to be spaced apart in a paper-width direction, the second registration mark pair located posterior to the first registration mark pair in the paper-conveying direction. Based on the actual positional relationship between the first registration mark pair and the second registration mark pair that are read by a reading unit, a correction unit corrects discharge data that corresponds to an image formation area located between the first registration mark pair and the second registration mark pair.

A method for printing sheet-type substrates to prevent streaks during the ink-jet paint coating of substrates, includes moving a substrate in a feed direction past an application device by means of a conveying device, applying with the application device, during the movement of the substrate, a fluid application material drop by drop to the surface of the substrate in a pattern with a pre-defined contour, in particular leaving out regions, through a plurality of ink-jet nozzles arranged in a row transversely to the feed direction, in response to computer-controlled switching signals, and during the application of the pattern and during the movement of the substrate, moving the ink-jet nozzles back and forth transversely to the feed direction, preferably in the longitudinal direction of the arranged row of ink-jet nozzles, such that the paths travelled by the nozzles over the substrate by the overlap of the movement back and forth with the movement in the feed direction have direction components running perpendicular to the feed direction.

A printer includes: a carriage which moves with a print head mounted thereon, the print head being configured to eject ink; a camera attached to the carriage and configured to capture an image printed on a print medium by the print head; a movement mechanism configured to move the carriage along a main scan direction; a transportation mechanism configured to transport the print medium along a sub-scan direction; a processor configured to control printing of the image onto the print medium; and a storage configured to store a correction value of a movement amount of the movement mechanism as a first correction value for a location adjustment of a capture area of the camera and store a correction value of a transportation amount of the transportation mechanism as a second correction value for the location adjustment of the capture area.

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.

While moving an ejecting unit, first patterns and second patterns are formed in a first direction on a medium. Third patterns corresponding to the first patterns are formed while changing a shifted amount by which the third patterns is shifted from the first patterns by a first shift amount in the second direction. Fourth patterns corresponding to the second patterns are formed while changing a shifted amount by which the fourth patterns is shifted from the second patterns by a first shift amount in the second direction. In a rough adjustment pattern, image density of a pair of patterns, which are formed of the first pattern and the corresponding third pattern, changes in the first direction in a first cycle. In a fine adjustment pattern, image density of a pair of patterns, which are formed of the second pattern and the corresponding fourth pattern, changes in a second cycle.

Provided is a printing apparatus including a platen portion including a platen surface on which a medium is disposed, and a carriage including a printing head and a distance sensor, the carriage being configured to move in a direction B on the platen surface. The printing apparatus further includes a control unit configured to move the carriage to measure, by using the distance sensor, a distance to the medium at each position to which the carriage moves, and to specify, based on information of the position and the distance, a position of an adjustment pattern printing range in which an adjustment pattern is printed on the medium.