磁気研磨法のはんだ印刷用マスク加工技術への応用

抄録

Attention has been given to magnetic grinding as a replacement technology for the mask process used for solder printing. The stainless steel mask used for the process is drilled using a laser, causing a deficiency of the printed solder if a trace of the laser is left on the hole's sidewall. Conventional methods to eliminate the laser trace are buff abrasion and electrolytic machining. However, electrolytic machining presents the problem of damage to the mask surface. In contrast, laser drilled mask processing using magnetic abrasion has the merit that partial repair is possible. By polishing the mask using a magnetic abrasive, KMX, the laser trace was nearly eliminated and the sidewall surface became smooth.