Image forming system

An image forming system comprising:

• an image forming apparatus configured to form an image on a recording material;
• a varnish application apparatus configured to apply varnish to the recording material on which an image is formed by the image forming apparatus;
• a failure sensor unit;
• a controller configured to execute a first type of image forming job in which varnish is applied by the varnish application apparatus to a recording material on which an image is formed by the image forming apparatus and a second type of image forming job in which varnish is not applied by the varnish application apparatus to a recording material on which an image has been formed by the image forming apparatus;
• and
• a display unit,
• wherein the varnish application apparatus comprises:
• a varnish storage tank configured to store varnish;
• a varnish application unit configured to apply varnish to a recording material by receiving varnish from the varnish storage tank;
• a first conveyance unit configured to convey a recording material in a first conveyance path that passes through the varnish application unit;
• and
• a second conveyance unit configured to convey a recording material in a second conveyance path that does not pass through the varnish application unit,
• wherein the varnish application unit includes a varnish application roller configured to apply varnish on the recording material and an ultraviolet radiation lamp configured to cure varnish applied to the recording material,
• wherein the failure sensor unit includes a velocity sensor configured to measure rotation of the varnish application roller, a temperature sensor configured to measure a temperature of varnish in the varnish storage tank, and an optical sensor configured to detect the amount of light of the ultraviolet radiation lamp, and
• wherein,
• the controller is configured to determine whether a failure has occurred in the varnish application unit based on a detection result of the failure sensor unit, and
• in a case where the controller determines that a failure has occurred in the varnish application unit, the controller determines whether the controller receives the first type of image forming job or the second type of image forming job, and controls the image forming system so that
• in a case where the controller receives the first type of image forming job, the controller does not permit the image forming apparatus to form an image on a recording material and causes the display unit to display an error message that a failure has occurred in the varnish application unit, and
• in a case where the controller receives the second type of image forming job, the controller permits the image forming apparatus to form an image on a recording material, causes the second conveyance unit to convey the recording material, and causes the display unit to display the error message that a failure has occurred in the varnish application unit.