Colour photocopying machine for obtaining reproductions also from diapositives.

摘要

A stereopticon lanter (2) is fitted to one per se known colour photocopying machine (1) operating by utilizing a photochemical process, so as the diapositive is projected onto the same reproduction screen (15) thereof, thus obtaining a double possibility of reproduction. The colour photocopying machine (1) to which said stereopticon lantern (2) can be fitted comprises a horizontal shooting plane (11) constituted by a thoroughly transparent glass plate onto which the image to be reproduced is put, which image is illuminated below by adequate lamps (12) and the so illuminated image is horizontally reflected by a mirror (13) disposed at a 45 DEG angle inclined beneath said shooting plane and is projected, through a relative optical control unit (14), onto a vertical screen (15) constituted by a photosensitive paper sheet (16), obtained from a band wound about a respective roller (17). After the exposure, the so exposed sheet (16) passes through a developing side (SV) and a subsequent drying side (SE) of conventional kind, disposed in the lower part of the same machine and leaves it by collecting in an adequate container (R). The stereopticon lantern (2) is placed laterally to the shooting plane (11) of the photocopying machine (1) and is connected to an adequate rigid frame (T1), removably fitted to the framework (1C) thereof, so that its projection axis (AV2) results to be parallel to the axis (AV1) of said shooting plane (11) and secant orthogonally the horizontal projection axis (AO1). Besides, a movable mirror (31) inclined at a 45 DEG angle, is disposed along the horizontal projection axis (AO1) of the photocopying machine (1), after the optical control unit (29) of the stereopticon lantern (2) as well as the optical control unit (14) of the fotocopying machine (1), which movable mirror (31) is able to diverge the image produced by the stereopticon lantern (2) onto the same screen (15) of the photocopying machine (1). Such movable mirror (31) may be controlled for being positioned out of the projection light beam of the photocopying machine, so as to allow the same to operate in a conventional manner. Finally, per se known operating, controlling and regulating means are provided for obtaining a regular operation of the so constituted assembly.