BOOK BINDING APPARATUS AND IMAGE FORMING APPARATUS HAVING THIS

摘要

There is provided a book binding apparatus including: a stacking portion that stacks sheets thereon; and a folding portion that folds the sheets stacked on the stacking portion; wherein there are provided a humidifying portion that humidifies the portion to be made into the folded portion of the sheet before being folded by the folding portion for each sheet to be stacked on the stacking portion.