Scanner and production method for printing apparatus

A production method for a printing apparatus, comprising:

• printing, on a medium, a test pattern on which a first adjustment pattern, an identification pattern, and a second adjustment pattern are arranged in order in a direction corresponding to a sub-scanning direction of a scan section;
• the scan section performing an intermittent scan to be stopped in a position of the identification pattern of the medium;
• comparing a stop-time image obtained by a scan of the identification pattern on the medium in a stop position where the movement of the scan section temporarily stops and a resumption-time image obtained by the scan of the identification pattern in the stop position at timing later than timing when the stop-time image is obtained;
• determining, based on a comparison result, whether the medium moved;
• continuing the intermittent scan when the medium did not move;
• suspending the intermittent scan when the medium moved;
• and
• when the intermittent scan continues, storing, in a nonvolatile memory, adjustment parameters based on the first adjustment pattern and the second adjustment pattern.