Testing for wiping pre-treatment of print media

Print apparatus comprising:

• a print head to print on a print medium;
• a sensor to monitor a printed region of the print medium;
• a controller to:
• cause the print head to print a test pattern on a test region of a print medium;
• receive test data from the sensor relating to the test pattern printed on the print medium;
• analyse the test data with reference to baseline data to determine if the test pattern satisfies a print quality criterion;
• output an instruction to operate the print apparatus in a first mode, in which a pre-printing treatment is not applied to the print medium, in response to determining that the test pattern satisfies the print quality criterion, the pre-printing treatment comprising wiping a printing surface of the print medium with a wiper element;
• and
• output an instruction to operate the print apparatus in a second mode, in which the pre-printing treatment is applied to the print medium, in response to determining that the test pattern satisfies the print quality criterion.

A method comprising:

• printing a test pattern on a print medium using a print apparatus operating in a first mode in which a pre-printing treatment is not applied to the print medium;
• generating test data relating to the test pattern printed on the print medium using a sensor, the sensor monitoring a printed region of the print medium;
• analysing the test data with reference to baseline data to determine if the test pattern satisfies a print quality criterion;
• operating the print apparatus in a second mode in which the pre-printing treatment is applied to the print medium in response to determining that the test pattern does not satisfy the print quality criterion;
• wherein the pre-printing treatment comprises wiping a printing surface of the print medium with a wiper element.