Printing – Rolling contact machines – Rotary
Patent
1999-04-12
2000-09-12
Eickholt, Eugene
Printing
Rolling contact machines
Rotary
226190, 101375, B41F 1354
Patent
active
061161594
ABSTRACT:
Angular deformation is caused in a portion of offset-printed web paper corresponding to an adjacent portion of each of side edges of two blankets of a blanket cylinder so that paper wrinkles are caused. To prevent the paper wrinkles from being caused, a contact roller 10 is arranged in a paper wrinkle preventing device such that a circumferential face of the contact roller can rotatably come in contact with the running web paper W in a rotary printing press having an offset printing portion P for printing the web paper W coming in contact with surfaces of two blankets B2 having side edges adjacent to each other at an approximately axial center of a blanket cylinder B. The contact roller 10 is arranged between the offset printing portion P and a drag roller D1. An equal diameter portion 101c is formed by a roller portion coming in contact with an area of the running web paper W coming in contact with an adjacent portion B1 of each of the two blankets B2 and a portion near this adjacent portion. A taper portion 101t is formed in each of both side portions of the equal diameter portion 101c and has a diameter reduced as each of both the side portions of the equal diameter portion 101c approaches an end portion 101e of the contact roller.
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Eickholt Eugene
Kabushiki Kaisha Tokyo Kikai Seisakusho
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