Additional member attaching apparatus and binding system including the same

An additional member attaching apparatus configured to be connected to a binder and configured to supply an additional member from outside of the binder and attach the additional member to a glue-applied spine of a book block standing still and upright at an additional member attaching position inside the binder, the additional member attaching apparatus comprising:

• a holding unit that holds the additional member while supporting an under face of the additional member;
• a first holding unit drive mechanism that causes the holding unit to move between a retracted position inside a housing and a forward position outside the housing;
• and
• a second holding unit drive mechanism that causes the holding unit to move between the forward position and a raised position above the forward position;
• a roll accommodation unit that accommodates a roll of a continuous sheet of the additional member rotatably about an axis;
• an unwinding unit that unwinds and draws the continuous sheet of additional member from the roll accommodation unit to a trimming station;
• a trimming unit that is arranged in the trimming station and cuts and trims the continuous sheet of additional member unwound and drawn by the unwinding unit in accordance with a size of the book block to form a strip of additional member;
• and
• a handover unit that hands over the strip of additional member from the trimming station to the holding unit located in the retracted position,
• wherein the forward position is right under the spine of the book block stopped at the additional member attaching position inside the binder,
• wherein the raised position is a position where the additional member is pressed against the spine of the book block, and
• wherein components of the holding unit and the first and second holding unit drive mechanisms and a component of the trimming unit are arranged vertically in two stages in arrangement such that the trimming unit is on the upper stage.