Multi-stage batch polishing method for end surface of optical fiber connector, and polishing film

A polishing method for performing multi-stage batch polishing on a workpiece by moving an end surface of the workpiece and a polishing plate relative to each other within a plane parallel to a reference surface while bringing the end surface of the workpiece into contact with a polishing film disposed on the polishing plate:

• wherein the end surface of the workpiece is moved in a circular motion with a diameter 2 R relative to the polishing film while the center of the circular motion is moved linearly in one direction by a predetermined distance S on the polishing film;
• the polishing film is provided with first, second, and third polishing surfaces along the direction of linear movement, the length in the direction of linear movement of each of the polishing surfaces being equal to or greater than the diameter 2 R of the circular motion;
• and
• the polishing film is further provided with a first cleaning surface between the first and second polishing surfaces and a second cleaning surface between the second and third polishing surfaces so that the range of the predetermined distance S in which one rotation in the circular motion crosses over different polishing surfaces is reduced, or so that one rotation in the circular motion does not cross over different polishing surfaces.