In a case where a region of a heating pressurization unit in a longitudinal direction of the heating pressurization unit where the heating pressurization unit heats and pressurizes a sheet of a maximum size is a first region, and a region of the heating pressurization unit in the longitudinal direction where the heating pressurization unit heats and pressurizes a sheet of a minimum size is a second region, and a region of the heating pressurization unit inside the first region and outside the second region in the longitudinal direction is a third region, the heating pressurization unit heats and pressurizes the sheet of the maximum size with a pressurization force profile having a minimum value in the longitudinal direction at a position in the third region or a position of an end portion of the second region adjacent to the third region.

A booklet making apparatus comprises a heating and pressing unit that heats and presses an adhesive layer in a state where a plurality of sheets on which the adhesive layer has been formed are layered. The heating and pressing unit includes a pressing plate, a heating body that heats the pressing plate, a reception member, and a pressing mechanism. A booklet is made by heating and pressing the adhesive layer while holding the plurality of sheets on which the adhesive layer has been formed between the pressing plate and the reception member. The pressing mechanism applies pressure to the plurality of sheets held between the pressing plate and the reception member by pressing the pressing plate without applying a force to the heating body.

A booklet making apparatus comprises a heating and pressing unit that heats and presses an adhesive layer in a state where a plurality of sheets on which the adhesive layer has been formed are layered. The heating and pressing unit includes a pressing plate, a heating body that heats the pressing plate, a reception member, and a pressing mechanism. A booklet is made by heating and pressing the adhesive layer while holding the plurality of sheets on which the adhesive layer has been formed between the pressing plate and the reception member. The pressing mechanism applies pressure to the plurality of sheets held between the pressing plate and the reception member by pressing the pressing plate without applying a force to the heating body.