Printing system, and method for controlling printing system

A printing system comprising:

• a printing apparatus including a printing section that ejects a liquid to perform printing on a medium with the liquid;
• a post-processing apparatus including a folding process section that performs a folding process of folding a medium bundle formed of a plurality of the media on which the printing apparatus performs the printing;
• and
• a control apparatus that controls the printing apparatus and the post-processing apparatus,
• wherein the printing apparatus further includes a first conveyance portion that conveys the plurality of media, which constitute the medium bundle, to the post-processing apparatus in a printing order,
• the post-processing apparatus further includes a second conveyance portion that conveys the media received from the printing apparatus in the printing order, and a post-processing section that performs post-processing different from the folding process on the media,
• the folding process section includes a tray in which the plurality of media are sequentially stacked on each other whenever conveyed by the second conveyance portion to form the medium bundle, and a folding mechanism that performs the folding process on the formed medium bundle, and
• the control apparatus, assuming that the folding process is performed on a plurality of the medium bundles, that one of the plurality of medium bundles is a first medium bundle, and that the medium bundle following the first medium bundle is a second medium bundle, causes the printing apparatus to start a printing process on a first medium of the medium of the second medium bundle after printing on a last medium of the media of the first medium bundle ends but before the folding process on the first medium bundle starts, and puts the printed first medium on standby in the post-processing section until the folding process on the first medium bundle ends.