A tape type binding apparatus for binding a stack of sheets with a paper staple that is bent in a U-shape having an adhesive agent layer on an inner face thereof, the tape type binding apparatus comprising: a cutter portion formed in a U-shape inside which the paper staple is held, the cutter portion including a pair of cutter blades, each formed with a rectangular hole; a paper table formed with a drawing hole through which the pair of cutter blades can be inserted; and a pair of pressing members (31, 32) arranged on respective sides of the drawing hole, each pressing member (31, 32) being able to move toward a center of the drawing hole, characterized in that each of the cutter blades comprises a protrusion disposed on an inner face of the cutter blade, the protrusion having a height that is higher than a thickness of the paper staple so that the pair of cutter blades and leg portions (103, 104) of the paper staple penetrate the stack of sheets placed on the paper table by moving down the cutter portion which holds the paper staple thereinside, the pair of pressing members (31, 23) is arranged below the paper table or at a height that is substantially equal to a surface of the paper table, and is configured to move toward the center of the drawing hole through the respective rectangular holes, formed on the cutter blades above the protrusions, to the inner side of the cutter portion so that the pair of pressing members (31, 32) is allowed to fold the tes portions (103, 104) of the paper staple to inner sides, and the tape type binding apparatus further comprises a clincher portion comprising a pressing piece arranged below the center of the drawing hole, wherein the clincher portion with pressing piece is sized to move between the pair of cutter blades, and is adapted to press and bond the folded leg portions (103, 104) such that the adhesive agent layer, provided at a lower portion of an inner face of only one of the leg portions, is stuck to the other of the leg portions by relatively moving up with respect to the paper table. a cutter portion formed in a U-shape inside which the paper staple is held, the cutter portion including a pair of cutter blades, each formed with a rectangular hole; a paper table formed with a drawing hole through which the pair of cutter blades can be inserted; and a pair of pressing members (31, 32) arranged on respective sides of the drawing hole, each pressing member (31, 32) being able to move toward a center of the drawing hole, characterized in that each of the cutter blades comprises a protrusion disposed on an inner face of the cutter blade, the protrusion having a height that is higher than a thickness of the paper staple so that the pair of cutter blades and leg portions (103, 104) of the paper staple penetrate the stack of sheets placed on the paper table by moving down the cutter portion which holds the paper staple thereinside, the pair of pressing members (31, 23) is arranged below the paper table or at a height that is substantially equal to a surface of the paper table, and is configured to move toward the center of the drawing hole through the respective rectangular holes, formed on the cutter blades above the protrusions, to the inner side of the cutter portion so that the pair of pressing members (31, 32) is allowed to fold the tes portions (103, 104) of the paper staple to inner sides, and the tape type binding apparatus further comprises a clincher portion comprising a pressing piece arranged below the center of the drawing hole, wherein the clincher portion with pressing piece is sized to move between the pair of cutter blades, and is adapted to press and bond the folded leg portions (103, 104) such that the adhesive agent layer, provided at a lower portion of an inner face of only one of the leg portions, is stuck to the other of the leg portions by relatively moving up with respect to the paper table.