Patent 7368682 was granted and assigned to Disco Corporation on May, 2008 by the United States Patent and Trademark Office.
A processing apparatus contains a holding member for holding a workpiece, and a laser beam shining member for shining a laser beam at the workpiece held on the holding member. The holding member has a holding plate and the workpiece is placed on the holding plate. The holding plate is composed of a plate-shaped body formed from polychlorotrifluoroethylene, and a film formed from polytetrafluoroethylene is superposed on an upper surface of the plate-shaped body.