Booklet making apparatus and image forming apparatus

A booklet making apparatus comprising:

• a pressurizing member configured to oppose a first surface of a sheet bundle in which a plurality of sheets including at least one sheet on which an adhesive layer is formed are stacked;
• a receiving member configured to oppose a second surface of the sheet bundle opposite to the first surface and nip the sheet bundle together with the pressurizing member;
• a moving portion configured to move the pressurizing member to a retracted position where the pressurizing member is retracted from the sheet bundle and a pressurizing position where the pressurizing member is in contact with the sheet bundle to pressurize the sheet bundle;
• a heating portion configured to heat the pressurizing member;
• and
• a sheet separation member configured to come into contact with the first surface of the sheet bundle and separate the sheet bundle from the pressurizing member in a process of the pressurizing member moving from the pressurizing position to the retracted position,
• wherein the pressurizing member has a first contact surface configured to come into contact with the first surface of the sheet bundle,
• wherein the sheet separation member has a second contact surface configured to come into contact with the first surface of the sheet bundle,
• wherein the sheet separation member is relatively movable to a first position and a second position with respect to the pressurizing member, the first position being a position where the second contact surface is at the same position as the first contact surface or is farther from the receiving member than the first contact surface is in a pressurizing direction in which the sheet bundle is pressed by the pressurizing member, the second position being a position where the second contact surface is closer to the receiving member than the first contact surface is in the pressurizing direction,
• wherein the sheet separation member is positioned at the first position in a case where the pressurizing member is positioned at the retracted position, and
• wherein the sheet separation member is configured to move from the first position to the second position in the process of the pressurizing member moving from the pressurizing position to the retracted position.