Photosensitive recording medium, and recording and reproducing apparatus for same

1. A photosensitive recording medium comprising a substrate in a shape of disc having a center hole in a center part, and a holographic recording layer made from a photosensitive material, said photosensitive recording medium including a clamp area provided near an edge of said center hole and extending over 360 degree so as to surround said center hole, and a recording area provided at a distance from said clamp area and extending over 360 degree so as to surround said clamp area,

wherein an RFID is embedded in a region between said clamp area and said recording area;

wherein a recess is provided in said region, and said RFID is embedded in said recess; and

wherein at least a part of a space around said embedded RFID in said recess is sealed with resin.

2. The photosensitive recording medium as claimed in claim 1 , wherein said resin has a smaller specific gravity than the material of said photosensitive recording medium.

3. The photosensitive recording medium as claimed in claim 2 , wherein a weight of a portion of said photosensitive recording medium removed for forming said recess is substantially equal to a sum of a weight of said RFID and a weight of said resin which seals said recess.

4. The photosensitive recording medium as claimed in claim 2 , wherein a weight for adjusting disk imbalance is provided at an opposite side to said recess with respect to said center hole.

5. A cartridge for a photosensitive recording medium capable of rotatably accommodating a disc-shaped recording medium and comprising a cartridge body having an opening for exposing a center and a recording face of said disc-shaped recording medium, and a shutter assembled to an outside of said

cartridge body and adapted to move between a closed position in which said opening is closed and an open position in which said opening is opened, wherein the photosensitive recording medium as claimed in claim 1 is accommodated in said cartridge.

6. The cartridge as claimed in claim 5 , wherein another RI=is provided inside said cartridge body.

7. A recording and reproducing apparatus for a photosensitive recording medium which contains said cartridge as claimed in claim 5 and conducts recording and reproducing on said recording layer of said recording medium while rotating said recording medium by opening said shutter, wherein a reading device for said RFID is provided on an opposite side to a side where a spindle motor for rotating said recording medium is provided.

8. A photosensitive recording medium comprising a substrate in a shape of disc having a center hole in a center part, and a holographic

recording layer made from a photosensitive material, said photosensitive recording medium including a clamp area provided near an edge of said center hole and extending over 360 degree so as to surround said center hole, arida recording area provided at a distance from said clamp area and extending over 360 degree so as to surround said clamp area,

wherein an RFID is embedded in an unrecordable region between said recording area and an outer circumferential edge of said recording medium;

wherein a recess is provided in said region, and said RFID is embedded in said recess; and

wherein at least a part of a space around said embedded RFID) in said recess is sealed with resin.

9. The photosensitive recording medium as claimed in claim 8 , wherein said resin has a smaller specific gravity than the material of said photosensitive recording medium.

10. The photosensitive recording medium as claimed in claim 9 , wherein a weight of a portion of said photosensitive recording medium removed for forming said recess is substantially equal to a sum of a weight of said RFID and a weight of said resin which seals said recess.

11. The photosensitive recording medium as claimed in claim 9 , wherein a weight for adjusting disk imbalance is provided at an opposite side to said recess with respect to said center hole.

12. A cartridge for a photosensitive

recording medium capable of rotatably accommodating a disc-shaped recording medium and comprising a cartridge body having an opening

for exposing a center and a recording face of said

disc-shaped recording medium, and a shutter assembled to an outside of said cartridge body and adapted to move between a closed position in which said opening is closed and an open position in which said opening is opened, wherein the

photosensitive recording medium as claimed in claim 8 is accommodated in said cartridge.

13. The cartridge as claimed in claim 12 , wherein another RFID is provided inside said cartridge body.

14. A recording and reproducing apparatus for a photosensitive recording medium which contains said cartridge for the photosensitive recording medium as claimed in claim 12 and conducts recording and reproducing on said recording layer of said recording medium while rotating said recording medium by opening said shutter, wherein a reading device for said RFID is provided close to said RFID.