Good Morning All, Today, I am tasked with gathering some research info on primary imaging of double treat multilayer material. We have experienced some staining and lock on situations in the past and I am looking for any input from board fabricators with any similar history. I understand that some of the newer treatments (Zbz?) have a similar appearance. Appreciate all info, from TechNet or direct. Anne Ledger Process Engineer EMDS, Inc. [log in to unmask] ############################################################## TechNet Mail List provided as a free service by IPC using LISTSERV 1.8c ############################################################## To subscribe/unsubscribe, send a message to [log in to unmask] with following text in the body: To subscribe: SUBSCRIBE TECHNET <your full name> To unsubscribe: SIGNOFF TECHNET ############################################################## Please visit IPC web site (http://www.ipc.org/html/forum.htm) for additional information. If you need assistance - contact Keach Sasamori at [log in to unmask] or 847-509-9700 ext.5315 ##############################################################