Image forming system and post-processing apparatus for producing booklet by bonding plurality of sheets

An image forming system comprising an image forming apparatus and a post-processing apparatus,

• the image forming apparatus comprising:
• an image forming unit configured to form an image on a plurality of sheets;
• an application unit configured to apply a bonding agent on the plurality of sheets;
• and
• a discharge roller configured to discharge the plurality of sheets to the post-processing apparatus in order, and
• the post-processing apparatus comprising:
• a conveyance roller configured to convey a plurality of sheet groups, each to which a bonding agent has been applied and constituted by a sheet discharged from the image forming apparatus;
• a sheet holder configured to hold the plurality of sheet groups by stacking a subsequent sheet group on a preceding sheet group;
• a thermocompression bonding unit configured to produce a booklet by applying heat and pressure to the plurality of sheet groups held in the sheet holder;
• and
• a controller configured to:
• obtain sheet information indicating a type of sheet or a conveyance duration of a preceding sheet group among a plurality of sheet groups;
• and
• control a thermocompression bonding parameter to be applied to at least one subsequent sheet group of the preceding sheet group among the plurality of sheet groups in the thermocompression bonding unit based on the sheet information.