Light exposure installation of a double-sided printed circuit plate through artworks
US5880820A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 14, 1997 |
| Grant date | Mar 9, 1999 |
| Priority date | — |
| Expiry date | May 14, 2017 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH05K3/0082
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
The invention relates to a light exposure installation of a double-sided printed circuit plate through a first and a second artwork equipped with a location mark. It includes a first and a second fixed supporting structure in a horizontal plane, a first and a second support of the first and second artworks, optical means for detecting the positioning errors between said circuit and said first and second supports, means for moving perpendicularly to its plane, one of said supports towards the other support, means arranged outside the unit made up of said supports and said circuit to maintain said circuit fixed in its plane with respect to said supporting structure; and means for moving independently said first support with respect to said circuit and said second support with respect to said circuit depending on the detected positioning errors.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.