Mitsubishi Heavy Industries Limited

Hitoshi Isono

Yasuharu Suda

Toyofumi Shimada

Shoichi Aoki

Masayuki Eda

Masahiro Harada

Minoru Sueda

Junichi Ibushi

Hiroaki Ikeda

Shinji Ueoku

Seiji Enma

Osamu Shinya

In a vessel () to which waste liquid () which contains ink pigment, water and cleaning liquid used in a printer is supplied, a metal electrode plate () which allows the waste liquid () to flow therethrough is disposed to partition the inside of the vessel () into a first region (a) and a second region (b). A high voltage from a high-voltage power supply () is applied to the metal electrode plate () while a grounding electrode () is connected to the first chamber (a) to generate an electrostatic field between the metal electrode plate () and the grounding electrode () so that the water and the ink pigment are electrostatically agglomerated from the waste liquid () making use of electrophoresis of the ink pigment by the electrostatic field thereby to separate the waste liquid in the first region (a) into the cleaning liquid, water and ink pigment.

Waste liquid regenerator of printing machine

A method for making a printing plate including a step of forming a hydrophobic image area on at least a part of a hydrophilic surface of a plate. The plate surface contains a photocatalyst and the image area is formed by using an organic compound which is decomposed and removed by the irradiation of light having a higher energy than the band gap energy of the photocatalyst.

Method for producing a photocatalytic printing plate by film transfer

A method for making a reusable printing plate in which a hydrophobic image area is formed on a hydrophilic plate surface containing a photocatalyst. The method includes the steps of carrying out a hydrophobic agent application process in which a solution containing an organic compound having a property of reacting with the plate surface by a heating process and a property of being decomposed by the action of the photocatalyst when irradiated by light having a higher energy than a band gap energy of the photocatalyst is applied on the plate surface; carrying out an image area formation process in which a part of the plate surface is subjected to a heating process to form a hydrophobic image area; and carrying out a non-image area formation process in which the organic compound applied to an area other than the hydrophobic image area on the plate surface is removed.

Method for producing printing plate, reusing method for printing plate, and printing machine

Printing plate, method for producing printing plate, reusing method for printing plate, and printing machine

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Mihara, Japan

Hitoshi Isono