Dainippon Screen Seizo Kabushiki-kaisha

Dainippon Screen Seizo K.k.

Syuzi Kondo

Keiji Toei

Akira Yamano

Tokujiro Ishida

Disclosed is a photosensitive material which has a first photosensitive layer formed on a support body such as an aluminum plate, a peel-off layer thereon and a second photosensitive layer formed on the peel-off layer in such a manner that the second layer can be photographically exposed to light and photographically developed independently from the first photosensitive layer and the first photosensitive layer may be subsequently photographically exposed with the picture image formed on the second photosensitive layer acting as a photographic mask. After the first photosensitive layer has been photographically developed, the two photosensitive layers may be used for different purposes, for instance, using the first photosensitive layer as a printing plate and the second photosensitive layer as a photographic film for making duplicate printing plates. Since the first photosensitive layer may be photographically exposed with uncontrolled light while the second photosensitive layer may be photographically exposed with a laser beam of small intensity, this photosensitive material is highly useful for use on a scanning image processing device. Also, a method of conveniently utilizing the photosensitive material is additionally disclosed.

Photosensitive material with two photosensitive layers for forming

Disclosed is a chromatic proofreading film which may be conveniently used for the process of ascertaining the color quality in multi-color printing by overlaying color picture images produced from the corresponding color separated picture images. The chromatic proofreading film of this invention has two photosensitive layers, the outer one consisting of a silver halide photosensitive material and the inner one consisting of a non silver salt photosensitive material such as diazo or azide resin, and the inner photosensitive layer is divided into a plurality of regions dyed to different basic colors so that the chromatic proofreading film may be cut apart into a plurality of separate sheets which may be overlaid for the purpose of chromatic proofreading after the film is photographically developed.

Growing community of inventors

Kyoto, Japan

Syuzi Kondo