An inkjet printer, comprising: a recording head including a plurality of nozzles to inject ink toward a recording medium; an image capturing device to capture an image of the recording medium; a controller; and an ink supplier to supply ink of a plurality of colors to the recording head; wherein the controller is configured or programmed to include: a test image printer to control the recording head to print, on the recording medium, a test image including a mark of a predefined shape usable to correct an image captured by the image capturing device and a test pattern usable to inspect a state of the plurality of nozzles, an image capture controller to control the image capturing device to capture an image of the test image printed on the recording medium; a corrector to compare the image of the mark captured by the image capturing device against the predefined shape of the mark to calculate a correction value, and correct the image of the test pattern, captured by the image capturing device, based on the calculated correction value; an inspector to perform an inspection to inspect the state of the plurality of nozzles based on the image of the test pattern corrected by the corrector; characterized in that the mark includes a model display portion representing a model of the inkjet printer; the controller further has: a model specifier to specify the model of the inkjet printer based on the image of the model display portion captured by the image capturing device; and a color specifier to specify positions of the colors in the test pattern based on the model specified by the model specifier and information on a positional arrangement of the colors in the test pattern registered in a database in association with each of models of the inkjet printer. a recording head including a plurality of nozzles to inject ink toward a recording medium; an image capturing device to capture an image of the recording medium; a controller; and an ink supplier to supply ink of a plurality of colors to the recording head; wherein the controller is configured or programmed to include: a test image printer to control the recording head to print, on the recording medium, a test image including a mark of a predefined shape usable to correct an image captured by the image capturing device and a test pattern usable to inspect a state of the plurality of nozzles, an image capture controller to control the image capturing device to capture an image of the test image printed on the recording medium; a corrector to compare the image of the mark captured by the image capturing device against the predefined shape of the mark to calculate a correction value, and correct the image of the test pattern, captured by the image capturing device, based on the calculated correction value; an inspector to perform an inspection to inspect the state of the plurality of nozzles based on the image of the test pattern corrected by the corrector; characterized in that the mark includes a model display portion representing a model of the inkjet printer; the controller further has: a model specifier to specify the model of the inkjet printer based on the image of the model display portion captured by the image capturing device; and a color specifier to specify positions of the colors in the test pattern based on the model specified by the model specifier and information on a positional arrangement of the colors in the test pattern registered in a database in association with each of models of the inkjet printer. a test image printer to control the recording head to print, on the recording medium, a test image including a mark of a predefined shape usable to correct an image captured by the image capturing device and a test pattern usable to inspect a state of the plurality of nozzles, an image capture controller to control the image capturing device to capture an image of the test image printed on the recording medium; a corrector to compare the image of the mark captured by the image capturing device against the predefined shape of the mark to calculate a correction value, and correct the image of the test pattern, captured by the image capturing device, based on the calculated correction value; an inspector to perform an inspection to inspect the state of the plurality of nozzles based on the image of the test pattern corrected by the corrector; characterized in that the mark includes a model display portion representing a model of the inkjet printer; the controller further has: a model specifier to specify the model of the inkjet printer based on the image of the model display portion captured by the image capturing device; and a color specifier to specify positions of the colors in the test pattern based on the model specified by the model specifier and information on a positional arrangement of the colors in the test pattern registered in a database in association with each of models of the inkjet printer. a model specifier to specify the model of the inkjet printer based on the image of the model display portion captured by the image capturing device; and a color specifier to specify positions of the colors in the test pattern based on the model specified by the model specifier and information on a positional arrangement of the colors in the test pattern registered in a database in association with each of models of the inkjet printer.