发明授权
US5423256A Form roller for printing press 失效
印刷机用辊

Form roller for printing press
摘要:
An adjustable nut and a friction washer exert a resistance to the rotation of a form roller, causing the form roller to rotate slower than the plate cylinder. The final form roller thus wipes the plate cylinder free of foreign particles to eliminate hickeys and ghosting on the final print.
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