Image forming system and image forming device

An image forming system comprising an image forming device and a computer configured to communicate with the image forming device,

• the image forming device comprising:
• a first medium container configured to accommodate a roll body formed by winding a long sheet-type medium in a roll;
• a second medium container configured to accommodate a plurality of short sheet-type media in a stacked manner, a length of the plurality of short sheet-type media being shorter than a length of the long sheet-type medium;
• a medium conveyer configured to selectively convey the long sheet-type medium accommodated in the first medium container and the plurality of short sheet-type media accommodated in the second medium container;
• an image forming device configured to form an image on a sheet-type medium conveyed by the medium conveyer;
• a cutting device configured to cut the long sheet-type medium at a cutting position along a first conveyance passage that is a conveyance passage for the long sheet-type medium extending from the first medium container to the image forming device;
• a detector configured to detect a first status and a second status, the first status being a status that the cutting device is not usable, the second status being a status that the sheet-type medium is unable to pass through the cutting position of the cutting device;
• a transmitting device configured to transmit a notification in accordance with a detection result of the detector;
• and
• a controller configured to cause, in accordance with a command transmitted by the computer, the medium conveyer to convey the sheet-type medium, and the image forming device to execute an image formation of forming an image on the sheet-type medium conveyed by the medium conveyer,
• wherein a second conveyance passage that is a conveyance passage of the medium conveyer extending from the second medium container to the image forming device satisfies at least one of:
• the plurality of short sheet-type media being conveyable in the first status;
• and
• the plurality of short sheet-type media being conveyable in the second status,
• wherein the computer is configured to:
• select, based on a user input, one of the long sheet-type medium and the plurality of short sheet-type media satisfying a particular condition in accordance with detection result of the detector;
• and
• generate and transmit a command indicating using of the selected one of the long sheet-type medium and the plurality of short sheet-type media to the image forming device, and
• wherein the particular condition includes:
• the detector detecting neither the first status nor the second status as a necessary condition to make both the long sheet-type medium and the plurality of short sheet-type media selectable;
• and
• the detector detecting one of the first status and the second status as a necessary condition to make the long sheet-type medium unselectable and make the plurality of short sheet-type media selectable.