背辊外表面为弹性材料，背辊上装有一条箔带。
The outer surface of back roller is the elastic material and the back roller is installed with one foil strip.
采用链条传动，对辊式版材输送结构。不伤版面及版背辊压设计；
Adopt chain drive and roller-crushing plate feeding structure, which will not hurt the plate while roll press the plate backface;
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