| 摘要 |
The upper part of a sheet-like rectangular product (A) is held and suspended by a jig (2). An engaging claw (6) which engages with an engaging protrusion (4) formed on the top part of the jig (2) is moved horizontally along a cathode bar (1) by a transfer driving means (5). A synthetic resin supporter (10) has a square cross section with a width (W). Contact pieces (12A and 14A) of a first contact plate (12) and a second contact plate (14) which are made of conductive metal material are pressed against the cathode bar (1) by spring elements (11 and 13). Holder pieces (12B and 14B) are brought into tight contact with each other by spring elements (15 and 15) to hold therebetween the upper part of the rectangular product (A). The cathode bar (1) has the side width (W) necessary for a step holding the rectangular product and has width narrower than the width (W) at a step of releasing the rectangular product. Along the conveying track of the rectangular product, a recessed guide trench in which the lower part of the rectangular product is received is provided in the bottom of the inside of a tank, on a stream regulating box connected to the outlet of the treatment liquid.
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