Tokyo Kikai Seisakusho, Ltd.

Tamaki Ohkawara

Daisuke Nakamura

Takashi Iijima

Kinichiro Ohno

Noboru Fujio

Kin-ichiro Ohno

An abnormality detector for nozzle-type dampening systems in offset printers, for injecting dampening solution through nozzles onto a receiving part by intermittently opening nozzles with nozzle opening signals generated by a nozzle operation controller, which detects the abnormal injection of dampening solution through the dampening system nozzles is disclosed. The abnormality detector comprises

Abnormality detector for nozzle type dampening systems

A dampening arrangement for a printing press such as a lithographic press includes at least one solution receiving roller for receiving dampening solution and other rollers for conveying the dampening solution to a printing plate. The dampening arrangement is provided with a nozzle unit having a plurality of nozzles arranged substantially in parallel with the axis of the solution receiving roller and opposed to predetermined areas on the surface of the solution receiving roller, and a dampening solution supply source connected to the nozzle means for supplying the nozzles with a pressurized dampening solution. The distance between the nozzles and the surface of the solution receiving roller is automatically adjusted in accordance with the printing speed of the printing press. The printing press does not cause a printing defect due to excess supply of the dampening solution even when the printing press is operated at a high speed.

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Kawasaki, Japan

Tamaki Ohkawara