Disk-like multilayer information recording medium and production method thereof

A method for producing a multi-layered disc-shaped information recording medium having plural layers each carrying a signal recording pattern, comprising the steps of:

• forming a first substrate by adherently transcribing a first signal recording pattern formed on a first stamper onto a sheet to produce a first signal surface;
• forming a semi-transparent film on said first signal surface and punching the resulting sheet:
• forming a second substrate by transcribing a second signal recording pattern formed by injection molding on a second stamper:
• forming a reflective film on a resulting signal surface:
• and
• bonding the first and second substrates by a pressure-sensitive adhesive.

A method for producing a multi-layered disc-shaped information recording medium having plural layers each carrying a signal recording pattern, comprising the steps of:

• forming a first substrate by forming a signal recording pattern provided on a first stamper on a sheet and forming a semi-transparent film on a signal surface carrying said signal recording pattern;
• forming a semi-transparent film by forming one or more semi-transparent films, having a signal recording pattern transcribed thereon, on the semi-transparent film of said first substrate by the interposition of a transparent adherent layer;
• forming a second substrate by forming a reflective film on a signal surface having transcribed thereon a signal recording pattern formed on a second stamper by injection molding;
• and
• bonding the first and second substrate together by a pressure-sensitive adhesive with the interposition of one or more semi-transparent films.