Kabushiki Kaisha Tokyo Kikai Seisakusho

Tokyo Kikai Seisakusho, Ltd.

Kiyohisa Asanuma

Masahiko Miyoshi

Kazuhiro Soutome

Kazuharu Soutome

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.

Blanket to blanket type printing press employing divided plate cylinder

In a multicolor printing press which has a plurality of printing sections arranged in vertical alignment, the multicolor printing press facilitates adjustment of register position between a plurality of printing sections. The multicolor printing press thus has a first printing section which includes at least one first plate cylinder, and at least one second printing section which includes at least one second plate cylinder. The multicolor printing press is also provided with means for rotatably supporting the first plate cylinder in a fixed register position for providing reference position in adjustment of register position in the second printing section, means for rotatably supporting the second plate cylinder, and adjusting means of register position of said second plate cylinder relative to the reference position defined by the first plate cylinder.

Multicolor printing press

In a multicolor printing press which has a plurality of printing sections arranged in vertical alignment, the multicolor printing press facilitates adjustment of register position along the feeding direction of a printing medium. The multicolor printing press comprises a plurality of printing sections arranged in vertical alignment, a plurality of the printing sections each including at least one plate cylinder for transferring printing pattern defined on a printing plate carried thereon to a printing medium on which the printing pattern is to be printed, and means, associated with the plate cylinder, for adjusting rotational phase of the plate cylinder relative to the printing medium for adjustment of register position of the printing pattern on the printing medium.

Multicolor printing press with feature of rotational phase adjustment

A printing press comprising press units inclusive of a press unit that does not correspond to a standard floor, the press units being stacked in stages. The standard floor is provided with an operation floor that faces a press unit and with an operation floor hoist means for moving the operation floor up and down. When a press unit is situated at an intermediate stage which renders the operator difficult to work on the operation floor at the height of the standard floor, the operator go on board the operation floor, actuates the operation floor hoist means to raise the operation floor to a predetermined position or a suitable position and stops it, and then carries out the operation for the press unit of the intermediate stage maintaining stable attitude.

Growing community of inventors

Kawasaki, Japan

Kiyohisa Asanuma