| 摘要 |
<p>An adaptor (80;90) for use in an apparatus for engraving images, the adaptor comprising a rectangular table having a given thickness and width which is put on a feeder in use, said rectangular table having a positioning rectangular groove (80a;92a) provided near an outer periphery thereof, said rectangular groove defining a depressed rectangular plane (80a';92a') which is lowered slightly by about 0.1mm with respect to the outer periphery of the rectangular table, a pair of small air openings (80c;92c) provided through the adaptor to locate at the upper and lower ends of the rectangular groove, an air hose being disposed behind said table, one end portion of said air hose being put into the air opening from the rear and another end being connected to a vacuum pump in order to hold an item to be engraved to the adaptor through a negative pressure of air.</p> |
