An image forming apparatus, an image formation method, and a non-transitory recording medium. The image forming apparatus acquires print data, converts the print data into ejection data to be used by the recording head to eject ink, applies to the ejection data, a correction mask pattern to change a manner of ink ejection for each nozzle of a nozzle row, the nozzle row including a plurality of nozzles arranged in a sub scanning direction of the recording head, and causes each nozzle of the recording head to eject ink onto the recording medium based on the ejection data to which the correction mask pattern is applied.

An image forming apparatus, an image formation method, and a non-transitory recording medium. The image forming apparatus acquires print data, converts the print data into ejection data to be used by the recording head to eject ink, applies to the ejection data, a correction mask pattern to change a manner of ink ejection for each nozzle of a nozzle row, the nozzle row including a plurality of nozzles arranged in a sub scanning direction of the recording head, and causes each nozzle of the recording head to eject ink onto the recording medium based on the ejection data to which the correction mask pattern is applied.

A control system, of a plurality of heads, acquires grating correction information related to at least two of scales in a first grating group and scales in a second grating group, based on position information of a movable body measured using at least four heads irradiating measurement beams on at least two of the scales and scales. The grating correction information is used to control movement of the movable body using at least three heads irradiating at least two of the scales and scales.

A control system, of a plurality of heads, acquires grating correction information related to at least two of scales in a first grating group and scales in a second grating group, based on position information of a movable body measured using at least four heads irradiating measurement beams on at least two of the scales and scales. The grating correction information is used to control movement of the movable body using at least three heads irradiating at least two of the scales and scales.

A control system, of a plurality of heads, acquires grating correction information related to at least two of scales in a first grating group and scales in a second grating group, based on position information of a movable body measured using at least four heads irradiating measurement beams on at least two of the scales and scales. The grating correction information is used to control movement of the movable body using at least three heads irradiating at least two of the scales and scales.

A control system, of a plurality of heads, acquires grating correction information related to at least two of scales in a first grating group and scales in a second grating group, based on position information of a movable body measured using at least four heads irradiating measurement beams on at least two of the scales and scales. The grating correction information is used to control movement of the movable body using at least three heads irradiating at least two of the scales and scales.

A control system, of a plurality of heads, acquires grating correction information related to at least two of scales in a first grating group and scales in a second grating group, based on position information of a movable body measured using at least four heads irradiating measurement beams on at least two of the scales and scales. The grating correction information is used to control movement of the movable body using at least three heads irradiating at least two of the scales and scales.

A control system, of a plurality of heads, acquires grating correction information related to at least two of scales in a first grating group and scales in a second grating group, based on position information of a movable body measured using at least four heads irradiating measurement beams on at least two of the scales and scales. The grating correction information is used to control movement of the movable body using at least three heads irradiating at least two of the scales and scales.

The present disclosure aims to reduce bleeding occurring near a border between image regions with different color ink densities. An embodiment of the present invention is a printing apparatus having a printhead ejecting a color ink and a reaction liquid reacting with the color ink and an application amount control unit that controls a reaction liquid application amount by, in image data representing the reaction liquid application amount of each pixel, estimating bleeding for each pixel and then according to the estimated bleeding, executing processing near a border between image regions having different color ink densities, the image regions being a first region having a first reaction liquid density and a second region having a second reaction liquid density lower than the first reaction liquid density, the processing being increasing the reaction liquid application amount for the second region based on the reaction liquid application amount for the first region.

The present disclosure aims to reduce bleeding occurring near a border between image regions with different color ink densities. An embodiment of the present invention is a printing apparatus having a printhead ejecting a color ink and a reaction liquid reacting with the color ink and an application amount control unit that controls a reaction liquid application amount by, in image data representing the reaction liquid application amount of each pixel, estimating bleeding for each pixel and then according to the estimated bleeding, executing processing near a border between image regions having different color ink densities, the image regions being a first region having a first reaction liquid density and a second region having a second reaction liquid density lower than the first reaction liquid density, the processing being increasing the reaction liquid application amount for the second region based on the reaction liquid application amount for the first region.