To fit an inlet of an IC tag directly to the spine of gathered fold sections.

A bookbinding device 1 has a plurality of clamps 4 which make a revolving movement, and has an adhesive applicator 5a, an inlet supply device 7, an adhesive applicator 5b and a cover supply part 11 disposed in that order in a transfer direction of the clamp 4. The bookbinding device 1 applies a first adhesive 17a to the gathered fold sections 3 with the help of the adhesive applicator 5a and supplies the inlet 19 with the help of the inlet supply device 7, and also, applies a second adhesive 17b with the help of the adhesive applicator 5b.