PURPOSE: To enable the supply of solder balls to arbitrary positions on a printed board by a method wherein a metal mask having a solder ball printing part, in which solder balls are housed, and squeegees, which slide on the metal mask, are provided.

CONSTITUTION: This solder ball printing device 1 mainly consists of a metal mask 10, a first and a second squeegees 20 and 30, a bed, a driving means for driving the first and the second squeegees 20 and 30 and the like. At the center of the metal mask 10, a solder ball printing part 11a is made by projecting strips 11. Further, at both the sides of the solder ball printing part 11a, a first and a second solder ball storing parts 11b and 11c are made of the same projecting strips 11 as just mentioned above. Furthermore, by means of a printing method, in which the metal mask and the squeegees are used, solder balls are easily supplied to arbitrary positions on a printed board, resulting in allowing to automatize the forming operation of ball grid array terminals.