Fitzpatrick, Cella, Harper & Scinto
Polishing apparatus including holder and polishing head with rotational axis of polishing head offset from rotational axis of holder and method of using
 A polishing apparatus includes a holder for holding a polished body with a polished surface thereof facing upwardly, and a polishing head for holding a polishing pad having a polishing surface having an area smaller than an area of the polished surface while contacting the polishing pad with the polished surface and for rotating the polishing pad around its rotation axis. The polishing head is provided with a driver for revolving the polishing pad around a revolution axis, and the revolution axis and the rotation axis are positioned so that a distance between the revolution axis and the rotation axis becomes smaller than a radius of the polishing pad. 
Canon Kabushiki Kaisha
B B B B
B24B B24B B24B B24B
inventional inventional inventional inventional
Satoshi Matsuomi Osamu Shinzo
Ohta Nishimura Ikeda Uchiyama