Method of producing video discs photographically and disc obtained by this method

摘要

Contact-impression is carried out with a die (18) containing video information (26) onto a replication medium (28) provided with a backing (25), a reflecting layer (24) and a photographic substance (27). This substance has a smaller actinic radiation absorption coefficient after exposure to this radiation than before exposure, as a result of which the video signal is faithfully reproduced even at the places where the contact between the die and the replication medium is imperfect. <IMAGE>