No abstract

No abstract

Aprint defヒct of streaking took place in an oftl et printing machine a 負er ditches ofblanket dmms coll 正 ded with those of proof cyHnders ， The streaking was visible just after 血 e conision ． These experimental features suggested that the defeCt was caused by tle vibration of blanket dmms and proof cylinders due to the collision of 血 ese ditches ． This hypothesis was proved by the experirnent that the pitch ofstreaking coincided with the period ofthe vibration ， The experimenta 且resUlts were confirmed by the numericak ealculation based on a simple 1 重 near vibration mode 且ofeight − degree −ofL丘eed 〔 ｝m ．

No abstract

No abstract