PURPOSE:To make the occurrence of paper jam difficult, by supporting pivotally either of upper and lower shoots, which are supported by indepenent constitution bodies, freely vertically shakably by said constitution body to hold the interval between both shoots constant. CONSTITUTION:An upper shoot 20 is fixed to an upper shoot holding frame 21, and a register roll 22 is supported pivotally through a bearing by the upper shoot holding frame 21 so that the register roll 22 is projected downward from a window for projection of the register roll similar to a lower shoot 7. In this case, even if the longitudinal position of the upper shoot holding frame 21 is different slightly, the interval between both shoots 7 and 20 is always held constant, and thus, the paper jam due to the variance of the interval between shoots is prevented.
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