Toyo Boseki Kabushiki Kaisha

Hajime Kouda

Yuji Taguchi

Toshiaki Fujimura

Keiichi Motoi

Kuniomi Etoh

Masaru Nanpei

Koji Syoki

Yoshihiro Kasho

A photosensitive resin laminate comprising at least a support, an adhesive layer and a photosensitive resin layer, wherein the photosensitive resin laminate shows a total light transmission of not less than 60%, or satisfies the following formula (1):{(A&#x2212;B)/A}&#xd7;100&#x2266;15&#x2003;&#x2003;(1)wherein A is a total light transmission (%) of the support and B is a total light transmission (%) of the photosensitive resin laminate.

Photosensitive resin laminate, and signboard plate and signboard made of the laminate

A multilayered photopolymer element made up of at least a support, a photosensitive layer and a cover film. The photosensitive layer is composed of at least two layers and the uppermost layer in the photosensitive layer contains a sensitivity controlling agent bonded with a polymer. The shape of the shoulder at a relief top is made sharp-edged whereby a printing plate having excellent print quality without being thickened by impression is prepared.

Multilayered photopolymer element including sensitivity controlling agents

Photosensitive polyamide resin composition which can be developed with water to give a relief printing plate having an excellent moisture resistance, comprising 30 to 90% by weight of a water-soluble polyamide having ammonium type nitrogen atoms and 5 to 70% by weight of a photopolymerizable unsaturated compound prepared by reacting (meth)acrylic acid (I) and a polyglycidyl ether of an aliphatic polyvalent alcohol (II) in an equivalent ratio of 0.5.ltoreq.(I)/(II).ltoreq.2.0, and 0.01 to 10% by weight of a photopolymerization initiator.

Photosensitive polyamide resin composition useful for making relief

Growing community of inventors

Ohtsu, Japan

Hajime Kouda