Reactive materials for limited play optical devices and methods of making same

Abstract

Methods and apparatus for making optically readable storage media in which reading beam passes through bonding layer configured with reactive material that transforms from optically transparent state to optically opaque state after exposure to predefined stimulus, thereby inhibiting access to data encoded on optically readable storage media. The method includes steps of synthesizing blocked dye, combining the blocked dye with carrier material, curing the resultant combination, deblocking dye to produce a reduced dye in the resultant bonding layer, exposing optically readable storage media with the reactive material in its bonding layer to predetermined stimulus. A further aspect includes optically readable storage media wherein reading light passes through bonding layer and data encoded information is encoded on L1 substrate. Another aspect includes processes for making optically readable storage media with at least two mechanisms for limiting access to encoded data of the optically readable storage media.

1 . A compound of formula I:  
     
       
         
         
             
             
         
       
     
     wherein 
 Y is O, S, Se, CR 17 R 18 , NR 13 , wherein R 13  R 17 , R 18  is each independently selected from hydrogen, C 1 -C 3  alkyl and substituted aryl groups and unsubstituted aryl groups;  
 R 2 , R 5 , R 6 , and R 9  each is independently selected from hydrogen, halogen, C 1 -C 6  alkyl, C 1 -C 6  alkoxy, aryl, nitro, azo and fused aromatic groups;  
 R 3 , R 4 , R 7 , and R 8  each is independently selected from NR 10 R 11 , OR 12 , hydrogen, alkyl, aryl, azo, and fused aromatic groups; and  
 R 10 , R 11 , R 12 , R 14 , R 15  and R 16  each is independently selected from hydrogen, unsubstituted C 1 C 6  alkyl, substituted C 1 -C 6  alkyl, unsubstituted C 1 -C 6  alkoxy, and substituted C 1 -C 6  alkoxy, benzyl or aryl groups.  
 
   
   
       2 . The compound of  claim 1 , wherein Y is S.  
   
   
       3 . The compound of  claim 1 , wherein R 4  is selected from NR 10 R 11  and OR 12 .  
   
   
       4 . The compound of  claim 1 , wherein R 7  is selected from NR 10 R 11  and OR 12 .  
   
   
       5 . The compound of  claim 1 , wherein Y is S; R 4  and R 7 is NR 10 R 11  and R 2 , R 3 , R 5 , R 6 , R 8 , and R 9  each is independently selected from hydrogen, halogen, alkyl, aryl, nitro, and fused aromatic groups.  
   
   
       6 . The compound of  claim 5 , wherein R14, R15 and R16 is each independently selected from hydrogen, unsubstituted C1-C6 alkyl, substituted C1-C6 alkyl, unsubstituted C1-C6 alkoxy, and substituted C1-C6 alkoxy.  
   
   
       7 . The compound of  claim 6 , wherein R14, R15 and R16 is each independently selected from methyl, ethyl, n-propyl and isopropyl.  
   
   
       8 . The compound of  claim 7 , wherein R14, R15 and R16 is isopropyl.  
   
   
       9 . The compound of  claim 8 , wherein R2, R3, R5, R6, R8, and R9 each is hydrogen; R10 and R11 each is methyl.  
   
   
       10 . The compound of  claim 1 , wherein Y is O.  
   
   
       11 . The compound of  claim 10 , wherein R 4  is selected from NR 10 R 11  and OR 12 .  
   
   
       12 . The compound of  claim 10 , wherein R 7 is selected from NR 10 R 11  and OR 12 .  
   
   
       13 . The compound of  claim 10 , wherein Y is O; R4 and R7 is NR10R11; and R2, R3, R5, R6, R8, and R9 each is independently selected from hydrogen, halogen, alkyl, aryl, nitro, and fused aromatic groups.  
   
   
       14 . The compound of  claim 13 , wherein R14, R15 and R16 is each independently selected from hydrogen, unsubstituted C1-C6 alkyl, substituted C1-C6 alkyl, unsubstituted C1-C6 alkoxy, and substituted C1-C6 alkoxy.  
   
   
       15 . The compound of  claim 14 , wherein R14, R15 and R16 is each independently selected from methyl, ethyl, n-propyl and isopropyl.  
   
   
       16 . The compound of  claim 1 , wherein Y is N.  
   
   
       17 . The compound of  claim 16 , wherein R 4  is selected from NR 10 R 11  and OR 12 .  
   
   
       18 . The compound of  claim 16 , wherein R 7  is selected from NR 10 R 11  and OR 12 .  
   
   
       19 . The compound of  claim 16 , wherein Y is N; R4 and R7 is NR10R11; and R2, R3, R5, R6, R8, and R9 each is independently selected from hydrogen, halogen, alkyl, aryl, nitro, and fused aromatic groups.  
   
   
       20 . An optical media comprising: a first substrate and a second substrate, wherein at least one of said first substrate and said second substrate has information encoding features; a bonding layer between said first and said second substrates: wherein said bonding layer transforms from a transparent state to an opaque state and comprises: a carrier material, wherein said carrier material comprises at least one of thermoplastic acrylic polymers, polyester resins, epoxy resins, polythiolenes, ultraviolet cured organic resins, polyurethanes, thermosettable acrylic polymers, alkyds, vinyl resins, and combinations thereof: a reactive material, wherein said reactive material comprises a reduced form of at least one dye selected from azines, oxazines, thiazines, leuco-azines, quinoneimines, indamines, indophenols, indoanilines, anthraquinones, acridines, diarylmethane, triarylmethane and combinations thereof; and a photostabilizing material, wherein said photostabilizing material comprises at least one polymeric phenol material.