Machine learning device including a state variable acquisition unit, a teaching data acquisition unit and a learned model generation unit that generates a first learned model by performing machine learning based on a first state variable dataset and first teaching data and generates a second learned model by performing machine learning based on a second state variable dataset and second teaching data

A machine learning device comprising a processor configured with a program to perform operations comprising:

• operation as a state variable acquisition unit that acquires a first state variable dataset including a print result at a first printing speed by an image formation apparatus, and a second state variable dataset including a print result at a second printing speed by the image formation apparatus, wherein the image formation apparatus is capable of printing at a plurality of printing speeds including the first printing speed and the second printing speed;
• operation as a teaching data acquisition unit that acquires first teaching data corresponding to the first printing speed and second teaching data corresponding to the second printing speed;
• and
• operation as a learned model generation unit that generates a first learned model by performing machine learning based on the first state variable dataset and the first teaching data, and generates a second learned model by performing machine learning based on the second state variable, dataset and the second teaching data, wherein
• each of the first state variable dataset and the second state variable dataset includes:
• feature value information in an actual printout in which printing is actually made;
• medium information, which is information of a print medium used to output the actual printout;
• and first control information, which is control information of the image formation apparatus when the image formation apparatus outputs the actual printout, and
• each of the first teaching data and the second teaching data includes:
• second control information, which is control information such that the feature value information become less than or equal to a predetermined threshold when the printing is made at a corresponding one of the first and second printing speeds;
• and a print defect value in a case of printing at the corresponding one of the first and second printing speed using the second control information.