Miyakoshi Printing Machinery Co., Ltd.

Nishikawa Communications Co., Ltd.

Siriusvision Co., Ltd.

Hitoshi Tomaki

Reishi Fujiwara

Kazumi Odashima

Hirokazu Kobayashi

Toshikazu Minoshima

Susumu Bushimata

Hiroki Terauchi

Keitaro Shiimoto

Masayuki Kurata

Atsutoshi Masuno

Toru Hinuma

Toshihiro Saga

Mitsuru Fujikawa

Shun Takahashi

A printing plate holding apparatus is provided which during a high speed printing operation reduces vibrations and noises caused in a groove for having a grip leading end and a grip trailing end of a printing plate inserted therein, which can fasten the printing plate with greater certainty, and which is suitable for the printing plate to be held securely on such as a sleeve cylinder whose weight reduction is demanded. It is a printing plate holding apparatus in which a printing platewound on a plate cylinderis to be held securely thereon in a rotary press, the apparatus having a plate insertion grooveformed on an outer peripheral surface of the plate cylinderand extending axially of the plate cylinderfor receiving a grip leading endand a grip trailing endof the printing plate, and comprising a printing plate retainer plateand a tap boltfor bringing both widthwise lateral end portions of the grip leading and trailing endsandof the printing plate into overlapping each other in the plate insertion grooveand for pressing and fastening them against a constraint surfacewith which the grip trailing endis in contact, in the plate insertion groove

Printing plate holding apparatus

A printing cylinder assembly for a printing machine includes a rotating shaft pivotally supported at one axial end shaft section thereof in a cantilever structure, and a sleeve cylinder removably mounted on the rotating shaft so that the cylinder can be fitted on and extracted from the rotating shaft from the other axial end side of the rotating shaft. The rotating shaft is formed at one axial end side thereof with a sleeve cylinder supporting tapered surface, and the sleeve cylinder is formed at one axial end side of an inner diameter portion thereof with a tapered surface, whereby the tapered surface of the sleeve cylinder can be fitted on and in close contact with the sleeve cylinder supporting tapered surface of the rotating shaft and thereby detachably coupling one axial end portion of the sleeve cylinder with one axial end portion of the rotating shaft.

Printing cylinder assembly for a printing machine

Growing community of inventors

Daisen, Japan

Hitoshi Tomaki