| 摘要 |
Printed circuit boards having patterns of uniform line width can be produced. A lamination apparatus superposes a resist layer on a substrate. Further, the substrate is exposed to light carrying information representing lamination date/time. An exposure apparatus reads out the lamination date/time information before performing exposure and judges whether passage time from the lamination to the current time is within the range of predetermined hold time. If the judgment is NO, the exposure apparatus issues a warning to notify an operator that the passage time from the lamination to the current time is not within the range of the predetermined hold time. The operator may remove the substrate from the exposure apparatus because it is impossible to form a pattern of desirable line width on the substrate.
|
