B - Operations – Transporting – 41 – F
Patent
B - Operations, Transporting
41
F
B41F 5/00 (2006.01) B41F 13/012 (2006.01) B41F 13/10 (2006.01)
Patent
CA 2074673
A BB-type printing press employing a divided plate cylinder has a novel drive gear train for avoiding rotation in the associated rotating condition and whereby to maintain satisfactory level of sharpness and/or clearness of printed patterns. The BB-type printing press comprises a pair of plate cylinders respectively carrying printing plates, each of the plate cylinders being separated into axially aligned a first plate cylinder component and a second plate cylinder component for rotation at independently adjustable rotational phases, a pair of blanket cylinders respectively carrying blankets and associated with the plate cylinders for receiving printing pattern of the printing plates to transfer onto both sides of a printing medium, the blanket cylinders having slightly different finished diameters from that of the plate cylinders, and a drive gear train for driving the plate cylinders and the blanket cylinders in synchronism with each other with maintaining desired phase relationship therebetween, the drive gear train establishing a path for power transmission so that the driving power is first transmitted to one of the plate cylinders and the blanket cylinders having smaller finished diameter and subsequently to the other.
Presse à imprimer de type BB caractérisée par la division des cylindres porte-plaque en deux parties entraînées séparément par un train d'engrenages nouveau et permettant d'obtenir une impression nette. La presse de cette invention comporte une paire de cylindres porte-plaque portant chacun une plaque d'impression et divisés en deux parties coaxiales dont la rotation peut être réglée séparément, une paire de cylindres porte-blanchet portant chacun un blanchet et disposés par rapport aux cylindres porte-plaque de manière à transférer l'impression des plaques sur les deux faces d'un support d'impression, le diamètre des cylindres porte-blanchet étant légèrement différent de celui des cylindres porte-plaque, et un train d'engrenages entraînant les cylindres porte-plaque et les cylindres porte-blanchet de façon synchronisée et avec le décalage de phase voulu, le train d'engrenages transmettant l'effort d'entraînement d'abord à l'un des cylindres porte-plaque, ensuite aux cylindres porte-blanchet dont le diamètre est moins grand, puis à l'autre cylindre porte-plaque.
Asanuma Kiyohisa
Miyoshi Masahiko
Soutome Kazuhiro
Kabushiki Kaisha Tokyo Kikai Seisakusho
Marks & Clerk
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