Image forming apparatus executes image formation process using spot and process colors, when high quality printing function is selected

An image forming apparatus comprising:

• an operation control portion for executing a plurality of functions for forming an image;
• a memory that stores availability information of the plurality of functions according to a specified contract that defines usage conditions of the image forming apparatus;
• and
• a determination portion that determines, when a usage request for at least one of the plurality of functions is received, with reference to the availability information, whether or not the at least one of the plurality of functions corresponding to the usage request that is received is configured to be used, wherein
• the operation control portion controls operation of the image forming apparatus in accordance with a determination result of the determination portion,
• the image forming apparatus is configured to use a process color ink and a spot color ink different from the process color ink,
• the plurality of functions include a high-quality printing function, and
• in a case in which the usage request for the high-quality printing function is received,
• when the determination portion determines that the high-quality printing function is configured to be used, the operation control portion executes image formation by printing using the process color ink and the spot color ink, and
• when the determination portion determines that the high-quality printing function is not configured to be used, the operation control portion executes the image formation by printing using the process color ink.