A printing apparatus having a printed image inspection function, comprising: a printing mechanism; an imaging portion; a colorimeter; and a control portion, wherein, the printing mechanism includes: a transport mechanism (203, 204, 204a, 204b, 207) configured to transport a base material; and printheads (205k, 205c, 205m, 205y) configured to print on a printing side of the base material, the control portion controls the printheads (203, 204, 204a, 204b, 207) and the transport mechanism (203, 204, 204a, 204b, 207) to form a printed image on the base material, the control portion controls the imaging portion and the colorimeter such that, when a test pattern image (51, 52, 511) for calibration of imaging by the imaging portion is formed as a part or whole of the printed image, the imaging portion captures the test pattern image and thereby generates test pattern imaging data (Lsc) and the colorimeter performs color measurement on the test pattern image and thereby generates colorimetric data (Dcm, Dcm1, Dcm3), the control portion generates imaging calibration data (151 to 155) based on the test pattern imaging data and the colorimetric data, the control portion controls the imaging portion such that, after the imaging calibration data (151 to 155) is generated, target imaging data (LOsc) is generated by the imaging portion capturing a target printed image formed based on print data representing an input image to be printed, the control portion corrects the target imaging data (LOsc) based on the imaging calibration data (151 to 155), the control portion determines the quality of the target printed image based on corrected target imaging data (DOcsc, DOcsc1), and during printing operation from a start to an end of printing on the base material by the printing mechanism, the control portion controls the imaging portion and the colorimeter such that the imaging portion generates the test pattern imaging data (Lsc) anew at predetermined time intervals and the colorimeter generates the colorimetric data (Dcm, Dcm1, Dcm3) anew at predetermined time intervals, and the control portion generates the imaging calibration data (151 to 155) anew at predetermined time intervals based on the test pattern image data generated anew and the colorimetric data generated anew, and thereby updates the imaging calibration data to be used for correcting the target imaging data (LOsc). a printing mechanism; an imaging portion; a colorimeter; and the printing mechanism includes: a transport mechanism (203, 204, 204a, 204b, 207) configured to transport a base material; and printheads (205k, 205c, 205m, 205y) configured to print on a printing side of the base material, a transport mechanism (203, 204, 204a, 204b, 207) configured to transport a base material; and printheads (205k, 205c, 205m, 205y) configured to print on a printing side of the base material, the control portion controls the printheads (203, 204, 204a, 204b, 207) and the transport mechanism (203, 204, 204a, 204b, 207) to form a printed image on the base material, the control portion controls the imaging portion and the colorimeter such that, when a test pattern image (51, 52, 511) for calibration of imaging by the imaging portion is formed as a part or whole of the printed image, the imaging portion captures the test pattern image and thereby generates test pattern imaging data (Lsc) and the colorimeter performs color measurement on the test pattern image and thereby generates colorimetric data (Dcm, Dcm1, Dcm3), the control portion generates imaging calibration data (151 to 155) based on the test pattern imaging data and the colorimetric data, the control portion controls the imaging portion such that, after the imaging calibration data (151 to 155) is generated, target imaging data (LOsc) is generated by the imaging portion capturing a target printed image formed based on print data representing an input image to be printed, the control portion corrects the target imaging data (LOsc) based on the imaging calibration data (151 to 155), the control portion determines the quality of the target printed image based on corrected target imaging data (DOcsc, DOcsc1), and during printing operation from a start to an end of printing on the base material by the printing mechanism, the control portion controls the imaging portion and the colorimeter such that the imaging portion generates the test pattern imaging data (Lsc) anew at predetermined time intervals and the colorimeter generates the colorimetric data (Dcm, Dcm1, Dcm3) anew at predetermined time intervals, and the control portion generates the imaging calibration data (151 to 155) anew at predetermined time intervals based on the test pattern image data generated anew and the colorimetric data generated anew, and thereby updates the imaging calibration data to be used for correcting the target imaging data (LOsc). the control portion controls the imaging portion and the colorimeter such that the imaging portion generates the test pattern imaging data (Lsc) anew at predetermined time intervals and the colorimeter generates the colorimetric data (Dcm, Dcm1, Dcm3) anew at predetermined time intervals, and the control portion generates the imaging calibration data (151 to 155) anew at predetermined time intervals based on the test pattern image data generated anew and the colorimetric data generated anew, and thereby updates the imaging calibration data to be used for correcting the target imaging data (LOsc).