Image forming system

An image forming system comprising:

• an image forming unit configured to execute an image forming process of forming an image on a plurality types of recording media including a first type of recording medium with a coated layer and a second type of recording medium without a coated layer;
• a varnish coating unit configured to execute a varnish coating process of coating, with varnish, a recording medium on which an image is formed by the image forming unit;
• a reception unit configured to receive a printing job from a user;
• and
• a control unit configured to control the varnish coating unit,
• wherein, in a case where a varnish coating process of applying a first coating amount of varnish is to be performed, the control unit allows the varnish coating process to be performed if the recording medium is a first type of recording medium and does not allow the varnish coating process to be performed if the recording medium is a second type of recording medium, and
• wherein a basis weight of the first type of recording medium is greater than a basis weight of the second type of recording medium.