| 摘要 |
PROBLEM TO BE SOLVED: To prevent a defect such as a crack, an omission or a chip of a solder terminal due to a fault of bleeding or snap-off of cream solder or a fault of slip-off properties of the cream solder from an opening part, and to make the solder terminal free from the defect due to repeated printing, even when a high-precision pattern is printed with a high density and at a high speed on the occasion when the solder terminal for mounting electronic components in a high density is formed of the cream solder by screen printing. SOLUTION: Intermittent electropolishing is applied to an original sheet of a metal mask wherein the opening part for transfer of an electroconductive paste is formed, so as to form the metal mask. COPYRIGHT: (C)2006,JPO&NCIPI
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