Fuji Photo Film Company, Limited

Teruo Mori

Tsutomu Kakei

Masaru Watanabe

Tsuneyasu Matsuhisa

Hiroshi Shirai

Kesanao Kobayashi

Azusa Ohashi

Yasuhisa Narutomi

A method and apparatus for electrolytic treatment to a metal web includes transporting the metal web between pairs of electrolytic-plates which are immersed in an electrolyzer. A plurality of insulating members extends from upper surface or bottom of the electrolyzer along a widthwise direction of the metal web, and the insulating members function to interrupt a flow of the electrolyte which is circulated in the electrolyzer which increases the agitation rate of the electrolyte in the vicinity of the surfaces of the metal web.

Apparatus for electrolytic treatment to metal web

An electrolytic processing device in which either or both surfaces of a belt-shaped metal plate can be selectively subjected to an electrolytic process. In a first electrolytic processing operation wherein only one surface of the belt-shaped metal plate is subjected to processing, an electrical insulating member is disposed between the belt-shaped metal plate and a first group of electrodes arranged over the surface of the belt-shaped metal plate to thereby suppress the flow of current between the belt-shaped metal plate and the first group of electrodes. In a second electrolytic processing operation in which both surfaces of the belt-shaped metal plate are subjected to processing, the electrical insulating member is removed from the position between the electrodes and the belt-shaped metal plate to thereby allow current to flow from the electrodes to both surfaces of the belt-shaped metal plate.

Electrolytic processing device for belt-shaped metal plates

A photosensitive diazo composition for a pre-sensitized lithographic plate which exhibits an extended shelf life as well as improved printing performance, the composition comprising (a) a diazonium compound, (b) an organic high molecular weight binder, and (c) from about 0.1 to about 5% by weight of oxalic acid or a salt thereof.

Photosensitive diazo lithographic printing plate with oxalic acid as

A method of producing a support for a printing plate comprising treating an aluminum plate, which has been oxidized by anodizing and then etched, with hot water or with water vapor.

Method of producing a support for a printing plate

A de-smutting agent comprising an aqueous solution containing a water-soluble hydrogen peroxymonosulfate and a water-soluble hydrogen sulfate and a method for removing smut from aluminum.

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Shizuoka, Japan

Teruo Mori