Resources Contact Us Home
Mastering apparatus for recording onto a glass master and method for recording onto a glass master

Image Number 4 for United States Patent #6103177.

A mastering apparatus for recording optical information onto a glass master 6, includes an objective lens 3, a slider 5 for controlling the movement of the objective lens 3 in the tracking direction, a turn table 7 for rotating the glass master 6, a spindle motor 8 for controlling the rotation of the turn table 7, a positioning beam generator 9, a positioning beam detector 10 for detecting a positioning beam reflected and/or diffracted by positioning units 16 and 17 and a slider controller 11 for moving the slider 5 based on the result of reception of a beam at the positioning beam detector 10. The positioning unit 16 is mounted on the vicinity of the objective lens 3, and the positioning unit 17 is mounted on the upper surface of a spindle stationary portion 13. Since the position of the positioning unit 17 is always stable, relative positional deviation between the positioning units 16 and 17 can be accurately detected by detecting the beam diffracted by the positioning units 16 and 17.

  Recently Added Patents
Decentralized processing network
Device and implantation system for electrical stimulation of biological systems
Rotating device
Data encoding and decoding apparatus and method thereof for verifying data integrity
Selecting one of a plurality of print modes based on pixel coverage of a document
Laser processing machine
Rim for a TV receiver
  Randomly Featured Patents
Pump unit
Helmet with two-way radio communication faculty
Method of producing a multilayer coated substrate having improved barrier properties
Electrohydraulic unit for pressure control in brake systems for automotive vehicles
Packaging machine
Method and assembly for holographic exposure
System reducing aerodynamic drag on vehicles
Apparatus for controlled freezing of melted solid ink in a solid ink printer
Method of data request scheduling in peer-to-peer sharing networks
Releasable cable connector assembly for use between a mobile and stationary object