Optical recording medium

Abstract

An optical recording medium which comprises a print-receiving layer as the outermost layer on the side opposite to the light incidence side, wherein a pattern is formed on the print-receiving layer.

What is claimed is:  
     
         1 . An optical recording medium which comprises a print-receiving layer as the outermost layer on the side opposite to the light incidence side, wherein a pattern is formed on the print-receiving layer.  
     
     
         2 . The optical recording medium according to  claim 1 , wherein the entire area of the outermost layer consists of the print-receiving layer.  
     
     
         3 . The optical recording medium according to  claim 1 , wherein the print-receiving layer is printable with a water base ink by means of an ink jet printer.  
     
     
         4 . The optical recording medium according to  claim 1 , wherein the print-receiving layer contains fine particles having an average particle size of at most 200 nm and a cation resin, and is printable with a water base ink by means of an ink jet printer.  
     
     
         5 . An optical recording medium which comprises a print-receiving layer as the outermost layer on the side opposite to the light incidence side, wherein a pattern is formed on the print-receiving layer by concaves or convexes.  
     
     
         6 . The optical recording medium according to  claim 5 , wherein the print-receiving layer is printable with a water base ink by means of an ink jet printer.  
     
     
         7 . The optical recording medium according to  claim 5 , wherein the print-receiving layer contains fine particles having an average particle size of at most 200 nm and a cation resin, and is printable with a water base ink by means of an ink jet printer.  
     
     
         8 . The optical recording medium according to  claim 5 , wherein the difference in height of the concave/convex pattern formed on the print-receiving layer is at least 0.5 μm.  
     
     
         9 . The optical recording medium according to  claim 8 , wherein a pattern by concaves or convexes is formed on a layer which is in contact with the print-receiving layer, and said pattern is the same as the concave/convex pattern on the print-receiving layer.  
     
     
         10 . An optical recording medium which comprises a print-receiving layer as the outermost layer on the side opposite to the light incidence side, wherein a pattern is formed on the print-receiving layer by colors.  
     
     
         11 . The optical recording medium according to  claim 10 , wherein the XYZ color system chromaticity coordinate (x, y) of reflected light at an optional portion on the print-receiving layer satisfies the formula (1):  
       ( x −0.32) 2 +( y −0.32) 2 ≦0.015   (1)  
     
     
         12 . The optical recording medium according to  claim 10 , wherein the XYZ color system chromaticity coordinates (x 1 , y 1 ) and (x 2 , y 2 ) of reflected light at optional two portions on the print-receiving layer satisfy the formula (2):  
       ( x   1   −x   2 ) 2 +( y   1   −y   2 ) 2 ≦0.012   (2)  
     
     
         13 . The optical recording medium according to  claim 10 , wherein the print-receiving layer is printable with a water base ink by means of an ink jet printer.  
     
     
         14 . The optical recording medium according to  claim 10 , wherein the print-receiving layer contains fine particles having an average particle size of at most 200 nm and a cation resin, and is printable with a water base ink by means of an ink jet printer.  
     
     
         15 . The optical recording medium according to  claim 10 , wherein the XYZ color system chromaticity coordinate (x, y) of reflected light at an optional portion on the print-receiving layer satisfies the formula (1), and the XYZ color system chromaticity coordinates (x 1 , y 1 ) and (x 2 , y 2 ) of reflected light at optional two portions satisfy the formula (2):  
       ( x −0.32) 2 +( y −0.32( 2 ≦0.015   (1) ( x   1   −x   2 ) 2 +( y   1   −y   2 ) 2 ≦0.012   (2)  
     
     
         16 . The optical recording medium according to  claim 15 , wherein the print-receiving layer is printable with a water base ink by means of an ink jet printer.