To achieve a binding of book which could be mistaken for a binding of a regular type by changing the position of a book by its thickness from a view point of efficiency and arranging so that the spine part of the book becomes neatly right-angled through a process to continuously draw two or four folding lines all at once in a correct position from the back with none of printing nor mark while manipulating a paper holder.

An arm which can slidably move a folding line drawing tool for changing a plurality of folding line drawing needle positions, correctly in a straight line, is installed on a table whose position can be confirmed from the back using a mirror.