Multi-Layer Circuit Green Sheet Carrier and Misplacement Detection Device
Original Publication Date: 1989-May-01
Included in the Prior Art Database: 2005-Jan-28
A technique is described whereby a multi-layer circuit (MLC) green sheet carrier is capable of holding up to four green sheets in position for punching via holes, as used in the fabrication process of printed circuit boards. A misplacement detection device is used in conjunction with a positioning mechanism to accurately locate and hold the sheets in place while loading. (Image Omitted) The carrier consists of five basic elements; carrier mechanism, riser, pneumatics, controller and the software required to operate the device. The five elements are as follows: - Carrier - The carrier is used to locate and hold up to four green sheets in proper position for punching of via holes.