I have seen some types AOI-equipment for inspection of PCB´s. None of the type used any kind of chemicals to prepare the prepreg. Instead the systems used a combination of reflective and diffuse light (key point in AOI), which can illuminate the PCB in a way so that the prepreg looks like it were fluorescent. I have never seen a system, which were based on fluorescence of the prepreg? We are using the AOI-systems from Orbotech and very satisfied with the performance. Compared to other systems it has a high ratio of reproducibility. Best regards Jan Thuesen -----Oprindelig meddelelse----- Fra: Kuwako, Fujio(MMS) [SMTP:[log in to unmask]] Sendt: 11. juli 1997 08.36 Til: [log in to unmask] Emne: Fw: Chemicals for AOI Is anybody in this industry tell me what type of chemicals are being used for giving fluorescence to the prepreg material for AOI equipment? Kuwako [log in to unmask] *************************************************************************** * TechNet mail list is provided as a service by IPC using SmartList v3.05 * *************************************************************************** * To subscribe/unsubscribe send a message <to: [log in to unmask]> * * with <subject: subscribe/unsubscribe> and no text in the body. * *************************************************************************** * If you are having a problem with the IPC TechNet forum please contact * * Dmitriy Sklyar at 847-509-9700 ext. 311 or email at [log in to unmask] * *************************************************************************** *************************************************************************** * TechNet mail list is provided as a service by IPC using SmartList v3.05 * *************************************************************************** * To subscribe/unsubscribe send a message <to: [log in to unmask]> * * with <subject: subscribe/unsubscribe> and no text in the body. * *************************************************************************** * If you are having a problem with the IPC TechNet forum please contact * * Dmitriy Sklyar at 847-509-9700 ext. 311 or email at [log in to unmask] * ***************************************************************************