Inkjet printing apparatus

An image processing method for printing an image to a print medium using a print head, in which a plurality of print elements are arranged in a first direction, while conveying the print medium in a second direction crossing the first direction relative to the print head, the image processing method comprising:

• an obtaining step of obtaining read data by reading a test pattern printed onto the print medium, the read data including (i) first data corresponding to an inner region that is inside of both ends of the print medium along the first direction, and (ii) second data corresponding to an outer region that is outside of both ends of the print medium along the first direction;
• and
• an executing step of executing predetermined processing based on the first data.

An image processing apparatus for printing an image to a print medium using a print head, in which a plurality of print elements are arranged along a first direction, while conveying the print medium in a second direction crossing the first direction relative to the print head, the image processing apparatus comprising:

• an obtaining unit configured to obtain read data by reading a test pattern printed onto the print medium, the read data including (i) first data corresponding to an inner region that is inside of both ends of the print medium along the first direction, and (ii) second data corresponding to an outer region that is outside of both ends of the print medium along the first direction;
• and
• an executing unit configured to execute predetermined processing based on the first data.

An image processing method for printing an image to the print medium using a print head, in which a plurality of print elements are arranged along a first direction, while conveying the print medium in a second direction crossing the first direction relative to the print head, a length of the print medium along the first direction being shorter than a length over which the plurality of print elements are arranged in the first direction, the image processing method comprising:

• a printing step of printing a test pattern is printed by marginless printing;
• and
• a detecting step of detecting an ejection state of print elements used for printing the test pattern, of the plurality of print elements, based on data obtained by reading the printed test patterns.

An image processing apparatus for printing an image to the print medium using a print head, in which a plurality of print elements are arranged along a first direction, while conveying the print medium in a second direction crossing the first direction relative to the print head, a length of the print medium along the first direction being shorter than a length over which the plurality of print elements are arranged in the first direction, the image processing apparatus comprising:

• a printing unit configured to cause the print head to print a test pattern by marginless printing onto the print medium;
• and
• an obtaining unit configured to obtain ejection state information for print elements used for printing the test pattern, of the plurality of print elements, based on data obtained by reading the printed test pattern.