Print apparatus, control method of the same, printhead, and print system

A control method of a print apparatus including:

• a print unit including a reactive liquid element row in which a plurality of print elements for applying a reactive liquid containing a component that reacts with a coloring material in ink are arrayed in a first direction, a first element row in which a plurality of print elements for applying a first ink are arrayed in the first direction, and a second element row in which a plurality of print elements for applying a second ink whose reactivity to the reactive liquid is lower than that of the first ink are arrayed in the first direction, the reactive liquid element row, the first element row, and the second element row being arrayed in the order as listed in a second direction perpendicular to the first direction, the method comprising:
• scanning the print unit in the second direction relatively to a print medium;
• and
• controlling a print operation by the print unit based on a print condition including a scan rate of the print unit and the number of scans in a unit region of the print medium such that an ejection frequency of the second ink does not exceed a threshold.

A print system comprising:

• a print apparatus including:
• a print unit including a reactive liquid element row in which a plurality of print elements for applying a reactive liquid containing a component that reacts with a coloring material in ink are arrayed in a first direction, a first element row in which a plurality of print elements for applying a first ink are arrayed in the first direction, and a second element row in which a plurality of print elements for applying a second ink whose reactivity to the reactive liquid is lower than that of the first ink are arrayed in the first direction, the reactive liquid element row, the first element row, and the second element row being arrayed in the order as listed in a second direction perpendicular to the first direction,
• a scan unit configured to scan the print unit in the second direction relatively to a print medium, and
• a print control unit configured to control a print operation by the print unit;
• and
• an information processing apparatus including a determination unit configured to determine an application amount of the second ink based on input image data and a print condition including a scan rate of the print unit and the number of scans in a unit region of the print medium, such that an ejection frequency of the second ink does not exceed a threshold,
• wherein the print control unit controls printing by the print unit based on the application amount determined by the determination unit.