| 摘要 |
PROBLEM TO BE SOLVED: To hold a board to prevent the generation of a processing unevenness of a chemical, the breaking of the board, and the contact between boards or between the board and a rack, in a board holding rack to load a soft and sheet form board such as a printed wiring board. SOLUTION: At both sides of a middle frame 1 provided to partition the inner side at the medium of an envelope composition 4 such as a cage, a fixing side frame 2 and a movable side frame 3 are provided, a tension mechanism 5 to move the middle frame 1 to the fixing side frame 2 and the movable side frame 3 which are fixed to the envelopment composition 4 is provided, and a conveyance by bending the base plate 33 in an arc form and giving a tension to a base plate itself, and a chemical processing, are carried out. |
