Patent ID: 11886943
Assignee: SEIKO EPSON CORPORATION
Field: Computer technology (Electrical engineering)
Classification: CPC G  B | IPC B  G

Claim 0:
1. A liquid ejection apparatus, comprising:
a printing unit configured to print an inspection image;
a reading unit configured to read the inspection image printed by the printing unit; and
an analysis unit configured to perform analyzation based on a reading result read by the reading unit, wherein
the printing unit prints the inspection image including
a first position detection mark printed in a first color,
a second position detection mark printed in the first color, and
an inspection pattern image including a plurality of inspection patterns of a plurality of colors, the plurality of inspection patterns including at least a second color inspection pattern printed in a second color different from the first color, and a different inspection pattern different from the second color inspection pattern,

the printing unit prints the inspection image such that
the first position detection mark is located at a first end portion of the inspection image in a predetermined direction and adjacent to the second color inspection pattern in the predetermined direction,
the second position detection mark is located at a second end portion of the inspection image in the predetermined direction and adjacent to the different inspection pattern in the predetermined direction, the second end portion is opposite to the first end portion in the predetermined direction, and
the plurality of inspection patterns are located between the first position detection mark and the second position detection mark in the predetermined direction, and

the analysis unit specifies a first position of the first position detection mark in a first region, and specifies a second position of the second position detection mark in a second region smaller than the first region.