| 摘要 |
A group of cylindrical printing screens, rotatable about parallel axes, are journaled on a machine frame and carry coaxial gears in mesh with driving pinions on the frame. A bed, designed to support a substrate to be imprinted, is supported underneath each screen on the frame through the intermediary of elevation-adjusting wedges interlinked by a control rod. The sceens can be axially tensioned by mounting units, slidable on axially extending guide rods, which carry spring-loaded thrust bearings acting in an axially outward direction upon their coaxial gears.
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