发明授权
US4480935A Printing type drum 失效
印刷鼓

Printing type drum
摘要:
There is disclosed an integrated cylindrical formation of plural lines of a printing type belt in such a printing type drum as contains a hammer unit therein, has plural lines of printing type belts installed round the periphery of the cylindrically formed drum body and supplied printing ink to the types by pressing an ink roller against the printing type belts.
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