Abstract: Provided is an inkjet printing apparatus, an inkjet printing method, and a storage medium capable of causing less density unevenness. To this end, in a case where an expected pause time is larger than a predetermined threshold T (s), a platen air blowing unit blows air to the surface of a printing medium on a platen at a wind speed lower than that during printing.

Abstract: A printing apparatus includes: a conveyance unit configured to convey roll sheet; a printing unit configured to print an image; a drying unit provided downstream of the printing unit in a conveyance direction; and a control unit configured to execute a second print job after a first print job is completed. The control unit preliminarily conveys the roll sheet in the conveyance direction after the first print job is completed. The control unit reversely conveys the roll sheet in a direction opposite to the conveyance direction in a case where, during the preliminary conveyance, a temperature of a region of the roll sheet exposed to heat from the drying unit meets a predetermined condition for executing the second print job.

Abstract: A printing apparatus includes: a printing unit having a first ejection port array and a second ejection port array; and a control unit configured to execute multipass printing to print an image in a predetermined region on a printing medium by scanning the printing unit N times (N is an integer equal to or greater than 2) in a main scanning direction intersecting a sub-scanning direction, and to perform control so that, in a case where an application amount of a color material ink per unit area corresponding to the predetermined region on the printing medium is a first amount, a first ratio of an application amount of the color material ink for printing in last N/2 scans to an application amount of the color material ink for printing in first N/2 scans among the N scans for printing an image is greater than 1.

Abstract: A recording apparatus includes one or more processors that operate to determine a dot arrangement of a plurality of colorant ink on a recording medium and a dot arrangement of a reaction solution on the recording medium based on respective dither patterns, a first dither pattern for determining a dot arrangement of a first colorant ink and a second dither pattern for determining a dot arrangement for the reaction solution, wherein a first number, which is a number of pixels overlapping between a first dot arrangement with gradation values smaller than a first median of first dither pattern gradations and a second dot arrangement with gradation values smaller than a second median of second dither pattern gradations, is greater than a second number, which is a number of pixels overlapping between a dot arrangement with gradation values greater than the first median and the second dot arrangement.

Abstract: A liquid ejection apparatus includes a scanning unit to cause a liquid ejection head to perform forward and backward scans in a scanning direction, a conveyance unit to convey a print medium in a conveyance direction, and a control unit to cause the scanning unit to wait for a first waiting time at a first waiting position between the end of a backward scan and the start of a forward scan, and wait for a second waiting time at a second waiting position between the end of a forward scan and the start of a backward scan. The control unit sets the second waiting time to a first value if the first waiting time is the first value, and sets the second waiting time to be shorter than the first waiting time if the first waiting time is a second value larger than the first value.

Abstract: To print high-definition images, an embodiment of the present invention provides a printing apparatus including: a printing unit configured to print an image on a printing medium by applying a first liquid containing a colorant and a second liquid containing a component that causes the colorant to aggregate; a control unit configured to control the printing unit so as to print a first pattern and a second pattern differing from the first pattern in a manner of application of the first liquid and the second liquid; and an identification unit configured to identify a characteristic of the printing medium based on a first density of the first pattern and a second density of the second pattern.

Abstract: An inkjet printing apparatus includes a print head to print an image by ejecting a colorant-containing colored ink and a colorant-coagulation reaction liquid onto a print medium, a printer unit to cause the print head to print test patterns on the print medium by correspondingly printing first pattern images with a predetermined volume of the colored ink and second pattern images with different volumes of the reaction liquid, a dryer unit to dry the test patterns on the print medium during printing of the test patterns on the print medium under control of the printer unit, an obtaining unit to obtain print information concerning print results of the test patterns, and a determination unit to determine a volume of the reaction liquid and a drying condition for the dryer unit for printing on the print medium based on the print information obtained by the obtaining unit.

Abstract: In a case of inserting a stopping operation of causing a printing unit to perform no scan for a predetermined time or longer after starting printing of an image onto a print medium, a control unit controls the printing unit and a conveyance unit so as to perform a first scan in at least one scan before the stopping operation and a second scan in at least one scan resumed after an elapse of a predetermined time since the stoppage, the first scan being a scan in which the printing element array is scanned with no printing over a printing region yet to be printed, the second scan being a scan in which remaining part of the printing of the printing region not printed in the first scan is performed.

Abstract: Two areas having different application amounts of chromatic color ink are disposed adjacent to each other, and an amount of reactive liquid is appropriately determined in accordance with a print result of a test pattern in which an amount of reactive liquid is varied.

Abstract: Provided is an inkjet printing apparatus, an inkjet printing method, and a storage medium capable of causing less density unevenness. To this end, in a case where an expected pause time is larger than a predetermined threshold T (s), a platen air blowing unit blows air to the surface of a printing medium on a platen at a wind speed lower than that during printing.

Abstract: To print high-definition images, an embodiment of the present invention provides a printing apparatus including: a printing unit configured to print an image on a printing medium by applying a first liquid containing a colorant and a second liquid containing a component that causes the colorant to aggregate; a control unit configured to control the printing unit so as to print a first pattern and a second pattern differing from the first pattern in a manner of application of the first liquid and the second liquid; and an identification unit configured to identify a characteristic of the printing medium based on a first density of the first pattern and a second density of the second pattern.

Abstract: A printing apparatus includes a printing unit to apply ink containing a coloring material, and a reactive liquid that reacts with the ink, to a printing medium, a reading unit to read an ink image on the printing medium, and a printing control unit to cause the printing unit to print a plurality of ink images different in application amount of the reactive liquid on the printing medium. In addition, a determination unit determines an application amount of the reactive liquid in printing using a predetermined type of printing medium, based on a ratio of a plurality of reading results obtained by the reading unit by reading the plurality of ink images printed on the predetermined type of printing medium.

Abstract: A technique capable of obtaining the displacement amount of the ejection position of a reaction liquid without changing a test pattern according to the configuration of the ejection head is to be provided. A test pattern including a detection pattern, which extends in a predetermined direction and in which, if divided into two, at least two inks and the reaction liquid are ejected to one area and only the at least two inks or the at least two inks and the reaction liquid of an amount that is smaller than that of the reaction liquid ejected to the one area are ejected to the other area, is printed, and the optical characteristics of the printed detection pattern are obtained. Further, based on the obtained optical characteristics of the detection pattern, the displacement amount of the ejection position of the reaction liquid in the predetermined direction is obtained.

Abstract: An image processing apparatus includes an acquisition unit that acquires N-valued image data corresponding to an image including at least one object, and edge data indicating an edge area of the object, an image processing unit that generates M-valued (N>M?2) quantized data where each of a plurality of pixels is associated with one of a value indicating that no dot is to be recorded and a value indicating that a dot is to be recorded, based on the acquired image data, using an image processing parameter, and a changing unit that changes at least one pixel among pixels that indicate the edge area of the object in the edge data and have the value indicating that no dot is to be recorded in the quantized data so that the at least one pixel has the value indicating that the dot is to be recorded.

Abstract: An inkjet printing apparatus includes a printhead in which a plurality of ejection ports that eject ink are formed, a carriage mounted with the printhead and reciprocated in a predetermined direction, a conveyance unit to convey a print medium, a platen to support, at a printing position, the conveyed print medium, and an obtaining unit to obtain information regarding a distance from an ejection port surface of the printhead to the print medium at positions in the predetermined direction. The apparatus controls an ink ejection timing in accordance with the information regarding the obtained distance and information corresponding to the number of passes of printing, which is the number of times of moving the carriage to print the image in a unit area of the print medium.

Abstract: A plurality of test patterns are printed with different print conditions, the test patterns each being formed by two inks out of a plurality of inks and a reaction liquid and including a plurality of patterns among which ejection positions of the reaction liquid relative to ejection positions of the two inks are displaced by a predetermined amount at a time. The optical properties of the respective test patterns printed on the print medium are detected. A displacement amount of the relative ejection positions of the reaction liquid from the ejection positions of the plurality of inks is obtained based on the optical property of the test pattern in which an optical density difference between the patterns in the test pattern is greater than a predetermined value and which has an optical density of a lowest level among the optical properties of the test patterns detected.

Abstract: A printing apparatus includes a printing unit configured to apply ink containing a coloring material, and a reactive liquid that reacts with the ink, to a printing medium, a reading unit configured to read an ink image on the printing medium, a printing control unit configured to cause the printing unit to print a plurality of ink images different in application amount of the reactive liquid on the printing medium, and a determination unit configured to determine an application amount of the reactive liquid in printing using a predetermined type of printing medium, based on a correlation between a plurality of reading results obtained by the reading unit by reading the plurality of ink images printed on the predetermined type of printing medium.

Abstract: A print position adjustment mode is performed with high accuracy while consumption of print media is saved. An inkjet printing apparatus prints an adjustment pattern including multiple patches for adjusting print positions of dots by a print head on a print medium. Patches set next to each other in a scanning direction are printed above platen ribs at intervals based on rib pitches at which the platen ribs are arranged.

Abstract: A technique capable of obtaining the displacement amount of the ejection position of a reaction liquid without changing a test pattern according to the configuration of the ejection head is to be provided. A test pattern including a detection pattern, which extends in a predetermined direction and in which, if divided into two, at least two inks and the reaction liquid are ejected to one area and only the at least two inks or the at least two inks and the reaction liquid of an amount that is smaller than that of the reaction liquid ejected to the one area are ejected to the other area, is printed, and the optical characteristics of the printed detection pattern are obtained. Further, based on the obtained optical characteristics of the detection pattern, the displacement amount of the ejection position of the reaction liquid in the predetermined direction is obtained.

Abstract: A plurality of test patterns are printed with different print conditions, the test patterns each being formed by two inks out of a plurality of inks and a reaction liquid and including a plurality of patterns among which ejection positions of the reaction liquid relative to ejection positions of the two inks are displaced by a predetermined amount at a time. The optical properties of the respective test patterns printed on the print medium are detected. A displacement amount of the relative ejection positions of the reaction liquid from the ejection positions of the plurality of inks is obtained based on the optical property of the test pattern in which an optical density difference between the patterns in the test pattern is greater than a predetermined value and which has an optical density of a lowest level among the optical properties of the test patterns detected.