Multi-standard reprographic camera

摘要

Microfiche or microfilm cameras which are provided with a variable format masking assembly and a facility to change the reduction ratio. In two constructions of the camera the head of the camera remains fixed with relation to the base. In one construction the photographing lens is movable in the head along the optical axis for change of reduction ratio and in this construction a mirror is provided in the head between the lens and copying table. In a second construction the copying table is movable into a well in the camera base and lighting may be provided into the well. In order to use microfiche film more economically various new microfiche layouts are devised as being suitable for these cameras.