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Machine translation
1. (WO1981001887) IMAGE RECORDING DEVICE FOR MANUFACTURING PRINT NEGATIVES
Latest bibliographic data on file with the International Bureau   

Pub. No.:    WO/1981/001887    International Application No.:    PCT/DE1980/000193
Publication Date: 09.07.1981 International Filing Date: 20.12.1980
IPC:
G03F 7/20 (2006.01)
Applicants:
Inventors:
Priority Data:
2952209 22.12.1979 DE
Title (EN) IMAGE RECORDING DEVICE FOR MANUFACTURING PRINT NEGATIVES
(FR) DISPOSITIF D"ENREGISTREMENT D"IMAGES POUR LA FABRICATION DE CLICHES D"IMPRESSION
Abstract: front page image
(EN)A laser beam modulated by the image is conducted by a multi-mode guide to the recording device. The modulated beam reaches a diaphragm which gives therefrom a punctual image on a light sensitive surface. A multi-mode light guide has the disadvantage to provide an irregular light distribution at its output. Consequently, the diaphragm is also irregularly lit and the light point is non-homogeneous, thereby producing lines on the recording surface. It is proposed to insert between the output (2) of the light guide (1) and the diaphragm (17) a dispersion screen (6) and an additional lens (13) located at a predetermined distance. Such arrangement provide an homogeneous lighting of the diaphragm and a recording free of lines.
(FR)Un faisceau laser module par l"image est conduit par un guide multimode au dispositif d"enregistrement. Le faisceau module aboutit sur un diaphragme qui en donne une image ponctuelle sur une surface sensible a la lumiere. Un guide de lumiere multimode presente le desavantage de donner une repartition irreguliere de la lumiere a sa sortie. En consequence, le diaphragme est egalement eclaire de facon irreguliere et le point lumineux est non-homogene, ce qui produit des raies sur la surface d"enregistrement. Il est propose d"inserer entre la sortie (2) du guide de lumiere (1) et le diaphragme (17) un ecran de dispersion (6) et une lentille supplementaire (13) situes a une distance determinee. Par cette mesure on obtient un eclairage homogene du diaphragme et un enregistrement depourvu de raies.
Designated States:
Publication Language: German (DE)
Filing Language: German (DE)