<p>A process camera apparatus for forming a half-tone image and a line image on a photosensitive material (1) such as a positive or negative film. The apparatus comprises a base (4); a transparent platen (5) provided on the base (4); light-shielding cover (9) covering the upper side of the transparent platen (5). such as to form a light-shielded region on the transparent platen (5); a screen device including a contact screen (6) and a screen frame (37) for supporting the contact screen (6), the screen device being withdrawably disposed on the portion of the transparent platen (5) within the light-shielded region; a pair of rollers (11) disposed adjacent one end of the base (4) and adapted for conveying the photosensitive material (1) into the light-shielded region; and a light-shielded condition maintaining device adapted to maintain the light-shielded condition in the light-shielded region when the screen device is being taken out from the light-shielded region. The apparatus may be provided with a guide plate for guiding the photosensitive material while the same is being fed onto the transparent platen by the pair of rollers.</p>
