A tape gun is provided having a pistol-grip type handle supporting a tape
dispensing roller upon which a roll of tape is mounted for rotatable
dispensing. A tape pressure plate guides the dispensed tape onto a
package, with a guide roller mounted in the tape path between the
dispensing roller and the pressure plate. The roller is made of or
incorporates a magnetic material, such as a neodymium magnet or
equivalent. The packaging tape itself incorporates a magnetically
attractive material, such as iron dust or wires or other magnetic metal
within or on the tape backing in a manner that comes in contact with the
magnetic guide roller.