Ryobi Limited

Katsushi Hirokawa

Hideo Aoyama

Etsuo Hiraishi

Nobuhiko Karafuji

Takahiko Nakamura

Tetsuyuki Doi

Takashi Kimura

Shigeo Fujiwara

Hideki Ikeda

Hiroyuki Sarada

Toshio Yamashita

Masao Nitta

Mikio Yamaoka

Yuichiro Tachibana

Yoshifumi Mitsunari

Sigeo Fujiwara

Tsuyoshi Inui

Hiroyoshi Kuwahara

There are provided a printing method for a printing press that includes: printing an image on a sheet of paper fed using an ultraviolet curable paint; and irradiating the ultraviolet curable paint on the printed sheet fed by selectively causing a plurality of light emitting diodes disposed at predetermined intervals across a lateral direction of the sheet to turn on in accordance with the location and size of a predetermined area of the sheet, thereby irradiating the predetermined area with ultraviolet light therefrom and curing the predetermined area.

Printing method for printing press and printing press

There is provided a method of winding up a transfer film and a device for performing transfer printing on printed sheets of paper, capable of eliminating the need to frequently replace the transfer film, thereby allowing the transfer film to be used over a prolonged time. According to the method of winding up a transfer film, the transfer film fed from a feed roll through a feed path is pressed onto a fed printed sheet to transfer patterns of the transfer film, and then the transfer film is wound up onto a windup roll through a windup path. During the rewind of the transfer film from the windup roll to the feed roll, a lateral position of the transfer film running along the feed path is detected, and the feed roll is moved in its axial direction to follow a lateral positional change of the transfer film.

Method of winding up transfer film and device for performing transfer printing on printed sheets of paper

A surface treatment apparatus for printed sheets that is capable of preventing radiation of UV rays onto printed sheets when out of use including a varnishing section for applying UV cure resin varnish on a printed sheet; a cylinder for conveying a printed sheet with the UV cure resin varnish applied thereon at the varnishing section; a film pressing part for pressing a transfer film onto a printed sheet on the cylinder; and a UV radiation part for curing UV cure resin varnish of a printed sheet onto which the transfer film is being pressed by the film pressing part. The UV radiation part is positioned close to the cylinder when the film pressing part is positioned close to the impression cylinder; and the UV radiation part is positioned away from the cylinder when the film pressing part is positioned away from the cylinder.

Surface treatment apparatus for printed sheets

A tail edge side part 50b of a plate 50 disposed on a cylinder surface of a plate cylinder 1 is pushed in a direction of an arrow 100 with a blade 39 rotated in a direction of an arrow 91. At that time, a tail edge side lower plate 6 maintains an initial position. And the tail edge side part 50b is clamped by closing a tail edge side upper plate 7 with a condition that the tail edge side part 50b is in contact with the tail edge side lower plate 6 by the rotation of the blade 39.

Device for clamping an edge of a plate for a printing machine

Printing machine

A cam shaft 23 is rotated 90 degrees when the plate 10 is fitted on the plate cylinder 60. Thus, as a result of the rotation, a flange part 3T of the tail edge side clamping base 3 is pushed by movement of a spring base 15 which receives a pushing force generated by springs 16. Therefore, the plate 10 is pulled in a tension applying direction. Since the tail edge side clamping base 3 does not receive the limitation of the cam shaft 23 directly, the tail edge side clamping base 3 can be moved in a direction parallel to a shaft of the plate cylinder 60. Thus, a diagonal image adjustment of the plate can be done easily.

Clamping apparatus of a plate for a printing machine

Offset printing machine

Growing community of inventors

Fuchu, Japan

Katsushi Hirokawa