摘要:
A master disc manufacturing apparatus includes an electron-beam emitting portion (40) for emitting an electron beam, an electron-beam converging portion for converging an electron beam, a retarding voltage applying portion (60) for applying a substrate with a negative potential having a magnitude of decelerating the electron beam, and a vacuum atmosphere producing portion for evacuating a chamber to produce a vacuum atmosphere therein.
摘要:
A master disc manufacturing apparatus includes an electron-beam emitting portion (40) for emitting an electron beam, an electron-beam converging portion for converging an electron beam, a retarding voltage applying portion (60) for applying a substrate with a negative potential having a magnitude of decelerating the electron beam, and a vacuum atmosphere producing portion for evacuating a chamber to produce a vacuum atmosphere therein.