On-film data symbol recording for photographic camera - uses LED facing film at entrance to transport passage and providing data sequence from memory

摘要

The data to be recorded are stored in a memory and a printing unit contains at least one display with electroluminescent elementary segments placed in such a way as to define a symbol. The stored symbols can be successively transferred onto the display and a pulse generator is triggered by the displacement of the film so that the symbols are transferred at a rate proportional to the soeed of the film displacement. The display is placed in front of the photosensitive material, at a place chosen in the film periods which correspond to the images. The display is situated at the entrance to the film passage, and the pulse generator is triggered during the unwinding periods which precede the storage of images.