Kabushikigaisha Tokyo Kikai Seisakusho

Tokyo Kikai Seisakusho, Ltd.

Nobuaki Nagao

Yoshinori Uera

Tetsuo Hatakeyama

Akira Ueda

It is intended to prevent ink from leaking through the ink outlet of the ink rail while the printing press is at halt. To achieve this object, a motor control sectionshown in FIG.controls the rotation of a stepping motordriving a plungerand, every time the stepping motoris stopped, the outer circumferenceof the plungerexcept a cut portionblocks at least a discharge port, thereby enabling the pressure ink invading from an intake portinto the main holeof a cylinderto press the plungeragainst the discharge portopening into the inner circumferential face of the main hole.

Ink pumping apparatus for printing press and ink leak preventing method

The present invention relates to a roll core holding device equipped with a roll core release mechanism which can facilitate to automatically and certainly release the empty roll core from a rotary printing machine. The roll core holding device for each end of a roll core comprises a shifting means; a center member capable of shifting owing to the shifting motion of the shifting means and consisting of a base section and a shaft section protruded from the base section; a plurality of pawls capable of shifting along the shaft section of the center member, arranged so as to widen the space between the pawls as they are shifted toward the base section; an urging means for the pawls toward the top of the shaft section; and a stopper secured at the top of the shaft section of the center member.

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Kawasaki, Japan

Nobuaki Nagao