A recording apparatus includes a recording head, a carrying part, a carriage and a detector that optically detects an image recorded on a recording medium, and a controller that obtains a correction value of recording positions of dots from a test pattern, and corrects the recording positions of the dots based on the correction value. The test pattern includes an adjustment pattern and a reference pattern, the adjustment pattern includes multiple overlapping patterns that are each formed by overlapping two basic patterns, the reference pattern is formed of predetermined patterns that each correspond to the multiple overlapping patterns, the correction value of recording positions of dots, which is obtained by the controller, is calculated based on adjustment detection results respectively obtained by detecting the multiple overlapping patterns and a reference detection result obtained by detecting the predetermined pattern forming the reference pattern, and the controller corrects the recording positions of dots based on the correction value.

An inkjet printer including an inkjet head, a head scanning unit, a wave shape generating mechanism to deform a recording medium into a predetermined wave shape, an obtaining device to obtain information concerning a type of the recording medium to be used in a printing operation, a gap information storing device to store gap information related to a gap between an ink discharging surface and the recording medium in association with a predetermined type of the recording medium, the gap information being acquired from a predetermined range in the recording medium, and a correcting device to correct the gap information according to the type of the recording medium obtained by the obtaining device when the type of the recording medium obtained by the obtaining device is different from the predetermined type of the recording medium stored in association with the gap information, is provided.

A printing method and a printing apparatus are provided. After ink droplets of a photocurable ink are landed on a print medium, a scan of applying a light to cure the ink droplets to form dots is performed alternately in a forward direction and a backward direction with respect to a predetermined unit region, and a time from landing to curing of the ink droplets onto the print medium differs between the forward direction and the backward direction. The printing method includes: providing the ink droplets that include: a large dot having a large amount of ink per droplet, and a small dot having a smaller amount of ink per droplet than that of the large dot; and controlling ejection of the ink droplets, such that number of passes when forming the large dot is greater than number of passes when forming the small dot, when forming a print image.

A printing apparatus prints an image by applying ink to a print surface of an inclined print medium using a print head. A control apparatus for the printing apparatus acquires information on an inclination of the print surface. Based on the information, printing is controlled according to a print condition corresponding to a magnitude of the inclination of the print surface.

The disclosed embodiments include a method to compensate for defective printer nozzles. The method can include detecting a defective printer nozzle and initiating a print job including image data of the defective printer nozzle for a pixel location of an image. The image is to be printed in accordance with a print mask that maps printer nozzles to pixel locations of the image. The method can include modifying the image to print the image data in a neighboring pixel location relative to the pixel location of the image and printing the modified image.

In an example a system includes a carriage with a print head receiving station, a color variation engine, and a delay engine. The color variation engine identifies a potential color variation condition corresponding to an area fill region. The delay engine applies a carriage delay strategy according to the identified potential color variation condition and the size of the area fill region.

A liquid discharging device includes a carriage carrying a head configured to discharge a liquid onto a target, the liquid including an ink, the ink consisting water, an organic solvent, a coloring material, and a plurality of polysiloxane compounds, a driving unit configured to move the carriage and the target relatively to each other, a measuring unit configured to measure the distance between the carriage and the target, an image-capturing unit configured to capture a target image, and a setting unit configured to set a liquid discharging performance of the head based on a measurement result obtained by the measuring unit and the target image obtained by the image-capturing unit.

In an image processing apparatus, a processor sets a target printing method for printing a target image to one of a bidirectional printing method and a unidirectional printing method. In a case where the bidirectional printing method is set as the target printing method: the processor executes both a first generation process and a second generation process. The first generation process generates first partial print data by converting a set of partial image data using a first color conversion profile. The second generation process generates second partial print data by converting another set of partial image data using a second color conversion profile. In a case where the unidirectional printing method is set as the target printing method, the processor executes a third generation process generating third partial print data by converting a set of partial image data using a third color conversion profile.

A liquid discharging apparatus, having a head with nozzles, a scanning assembly, a conveyer, and a controller, is provided. The controller is configured to conduct actions including a conveying action and a scanning action. The scanning action includes a forward scanning action and a backward scanning action, in each of which a deceleration distance is longer than an acceleration distance. The controller is configured to determine, prior to conducting the forward scanning action, whether a deceleration range corresponding to the deceleration distance in the forward scanning action coincides with a discharging range in the forward scanning action. In a case where the controller determines that the deceleration range coincides with the discharging range, the controller is configured to conduct the backward scanning action, without conducting the forward scanning action, based on partial image data being a part of the image data corresponding to the forward scanning action.

Examples are provided to methods to dynamically control the timing of a printing fluid drop ejection to deposit printing fluid on a print zone of a substrate. The examples may also provide measuring a height profile of a pre-print zone.