| 摘要 |
A PROCESS FOR PRODUCING A DVD FROM TWO DVD SUBSTRATES A AND B, WHEREIN THE FIRST SUBSTRATE (A-DISC) OF THE DVD IS PRODUCED BY A FIRST INJECTION UNIT A AND THE SECOND SUBSTRATE (B-DISC) OF THE DVD IS PRODUCED BY A SECOND INJECTION UNIT B, WHEREIN ONE OR BOTH SUBSTRATES ARE COATED, IN PARTICULAR METALLISED, IN A COATING STATION, WHEREIN ONE OR BOTH DVD SUBSTRATED ARE PROVIDED WITH AN ADHESIVE IN AN ADHESIVE APPLICATION STATION AND WHEREIN THE DVD SUBSTRATES A AND B ARE SUPPLIED TO AT LEAST ONE JOINING STATION FOR THE PURPOSE OF JOINING THE A-DISC AND B-DISC TO FORM A DVD. THE INVENTION IS CHARACTERISED IN THAT AT LEAST ONE WALKING BEAM (12) IS PROVIDED FOR TRANSPORTING THE DVD SUBSTRATES A AND B THROUGH THE PRODUCTION LINE, IN THAT THE A-DISC AND THE B-DISC ARE ALTERNATELY LOCATED BEHIND ONE ANOTHER IN A ROW (A-B-A-B-A--B-...) ON THE WALKING BEAM (12) AND IN THAT THE WALKING BEAM IS OPERATED IN DOUBLE STEP FASHION. IN THIS WAY, THE A SUBSTRATES ARE ALWAYS IN THE OTHER SAME POSITION WHICH MAKES TITLE TRACKING POSSIBLE WITHOUT SENSOR AND SOFTWARE EXPENDITURE.(FIG 3) |
