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 system comprises a print fluid deposition assembly, a media transport device, and an air flow control system. The print fluid deposition assembly comprises a carrier plate and a printhead to eject a print fluid through an opening of the carrier plate to a deposition region. The media transport device holds a print medium against the movable support surface by vacuum suction and transports the print medium through the deposition region. The air flow control system comprises an air supply unit comprising an airflow guide structure extending into the opening of the carrier plate, the airflow guide structure configured to flow air at a direction aimed under the printhead and at an oblique angle relative to the movable support surface. The air flow control system controls the air supply unit to selectively flow the air based on a location of a print medium relative to the printhead.

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.

A liquid ejection apparatus is provided that includes a plurality of liquid ejection head units that are configured to eject liquid onto a conveyed object being conveyed; a detection unit that is provided with respect to each liquid ejection head unit of the plurality of liquid ejection head units and is configured to output a detection result indicating at least one of a position, a moving speed, and an amount of movement of the conveyed object with respect to a conveying direction of the conveyed object; and a control unit configured to control each liquid ejection head unit among the plurality of liquid ejection head units to eject liquid at a timing based on a plurality of the detection results of a plurality of the detection units.

A printing method for printing a printing medium includes a non-white ink application step of applying an aqueous non-white ink composition containing a non-white coloring material onto the printing medium, and a white ink application step of applying an aqueous white ink composition containing a white coloring material onto the non-white ink composition on the printing medium to form a superimposed region. The non-white ink composition and the white ink composition each have an organic solvent content limited to 15% or less relative to the total mass of the corresponding ink composition. The mass ratio of the white ink composition to the non-white ink composition in the superimposed region is 1.5 or more in a portion to which the non-white ink composition is applied in an amount largest in the superimposed region.

A raised shape is appropriately formed on a medium. A printing device 10 includes inkjet heads 102y to 102k that are a plurality of color ink heads, an inkjet head 102w that is a light reflective ink head, and a controller 30. The controller 30 causes the inkjet heads 102y to 102k and the inkjet head 102w to form a layered ink region and an image region on the medium 50. The layered ink region is a region including a plurality of colored regions (four-color regions) that are colored regions formed by causing at least two inkjet heads among the plurality of inkjet heads 102y to 102k to eject ink, and a plurality of white layers that are light reflecting regions formed on the colored region. The colored regions in the layered ink region are superimposed with at least the white layer interposed therebetween.

A multifunction peripheral includes a conveyance roller, a print engine, a scanner, and a controller. The controller is configured to perform: driving the conveyance roller to convey a recording medium and controlling the print engine to record, on the recording medium, a test image based on test image data with recording agent; after recording the test image, controlling the scanner to generate scan data of the test image recorded on the recording medium; after generating the scan data, extracting, based on the scan data and the test image data, stain data indicative of a stain caused by transfer of the recording agent from the conveyance roller to the recording medium; after extracting the stain data, generating correction data by removing the stain data from the scan data; and executing particular processing by using the correction data.

Provided is an image recording method including a step of preparing an ink containing water and a white pigment, and a step of jetting the ink from an ink jet head in a liquid droplet amount of 1.0 pL or greater to apply the ink onto a base material, in which in a case where an ink jetting surface of the ink jet head is immersed in the ink in a vertically standing state for 2 seconds, the jetting surface is pulled up from the ink in the state, and the jetting surface is allowed to stand in the state for 1 minute, a ratio of an area of a region to which the ink is adhered to an area of the jetting surface is 40% by area or less.

A method for correcting an image includes: moving first and second ink jet heads and a medium relative to each other, each of the first and second ink jet heads including nozzles and drive elements corresponding to the nozzles respectively; discharging ink droplets from the nozzles of the first and second ink jet heads, by connecting each of the drive elements to one of power supply circuits and by applying voltage to each of the drive elements, the power supply circuits having different output voltage values each other; determining a density difference between a first image region and a second image region; and switching the voltage to be applied to first drive elements to a first voltage by switching the power supply circuits to be connected to the first drive elements based on the density difference.

The inkjet printing device includes a dark ink container containing a dark ink of a color, a light ink container containing a light ink of the color, a dark ink discharging nozzle group for discharging the dark ink, and a light ink discharging nozzle group for discharging the light ink, wherein the light ink discharging group is disposed upstream of the dark ink discharging group in a sub-scanning direction, wherein the following Relationship 1 is satisfied: 10/100≤a ratio of a pigment content in the light ink to a pigment content in the dark ink≤40/100 Relationship 1.