PURPOSE: To easily replace a bond tray with another one corresponding to changes in the kinds of tips and bonds and easily adjust the transfer amount of bond by a method wherein a bond feeder consists of a transfer device which selectively transfer one among the two or more bond trays from the feeding position to the stand-by position and vice versa, a horizontal turning device and a squeegee.

CONSTITUTION: A bond tray 2A is positioned at the feeding position (a) and another bond tray 2B is located at the stand-by position (b). Then, motors M1 and M2 are brought in operation to horizontally turn the bond trays 2A and 2B in the direction shown by arrows N. Thereby, a squeegee 26 smoothes the liquid surface of a bond 23 to keep the depth (d) of the bond 23 constant. A transfer element 30 is placed on the liquid surface, and bond 23A attaches on the back of the transfer element 30 and is transferred on a base plate 31. A knob 16 is operated to move up or down the bond tray 2A against the squeegee 26 so that the depth (d) is changed and the amount of the bond attached on the transfer element 30 is adjusted. When the kind of the bond 23 is changed, a cylinder 9 is operated to replace the tray 2A with the tray 2B.