Abstract: Photocomposition apparatus comprises a modulated laser for generating a modulated laser beam; a holder for the photosensitive material, with the holder having the shape of a segment of a cylinder whereby the photosensitive material in the holder adopts a partially cylindrical shape; an optical image forming system and a rotatable mirror arrangement mounted on a carriage, by means of which the rotatable mirror arrangement can be displaced with its axis of rotation coaxial to the cylinder axis of the holder along this cylinder axis. The laser beam which falls on the rotatable mirror arrangement via the optical image forming system, and which is substantially radially directed towards the photosensitive material in the holder after reflection at the rotatable mirror scans the photosensitive material linewise as a result of rotation of the rotatable mirror and displacement of the carriage along the cylinder axis of the holder, and thereby generates a desired latent pattern in the photosensitive material.

Abstract: A reproduction camera for producing screen modified images of an original copy suitable for subsequent use in the production of ink printed pictures features an objective lens spaced apart from a film holder located at the image plane of the objective by an extensible bellows. A light source providing the conventional priming (or bump) exposure used in processing screen modified images is arranged within the bellows closely adjacent the edge of the film holder surrounding the image plane. Light from the light source is directed toward the bellows so that only scattered light, which is thus evenly distributed, is received at the image plane. The light source is conveniently four separate lamps arranged generally at the corners of the bellows and the images of these lamps formed at the object plane of the objective helps in initially locating the original from which the screen modified image is to be made.