Ink jet recording method for recording pattern layer and white overlaying layer on longitudinal sheet

Abstract

The present invention relates to an ink jet recording method for recording a white overlaying layer and a non-white pattern layer to a recording medium, printed matters obtained by the recording method, and systems for realizing the recording method thereof.

What is claimed is: 
     
       1. A recording method in which a printing image including a white ink layer and a non-white ink layer is recorded to a recording medium, the method comprising:
 providing, in a case where the recording medium is opaque, the white ink layer and providing the non-white ink layer on the white ink layer;   wherein a resolution of the white ink layer is higher than a resolution of the non-white ink layer; and   wherein an ink discharge amount per unit area of the white ink layer is larger than an ink discharge amount per unit area of the non-white ink layer.   
     
     
       2. The method according to  claim 1 , further comprising drying the white ink, the non-white ink layer being provided after the drying. 
     
     
       3. The method according to  claim 1  wherein the resolution per unit inch of the white ink layer is 600 to 9600 dpi, and the resolution per unit inch of the non-white ink layer is 180 to 1440 dpi. 
     
     
       4. The method according to  claim 1 , wherein a size of white ink droplets discharged for recording the white ink layer is either larger or smaller than non-white ink droplets discharged for recording the non-white ink layer. 
     
     
       5. The method according to  claim 1 , wherein the non-white ink layer is a color layer, a black layer, or a gray layer. 
     
     
       6. A recording method in which a printing image including a white ink layer and a non-white ink layer is recorded to a recording medium, the method comprising:
 providing, in a case where the recording medium is transparent, the non-white ink layer and providing the white ink layer to the white ink layer;   wherein a resolution of the white ink layer is higher than a resolution of the non-white ink layer; and   wherein an ink discharge amount per unit area of the white ink layer is larger than an ink discharge amount per unit area of the non-white ink layer.   
     
     
       7. The method according to  claim 6 , further comprising drying the non-white ink, the white ink layer being provided after the drying. 
     
     
       8. The method according to  claim 6 , wherein the resolution per unit inch of the white ink layer is 600 to 9600 dpi, and the resolution per unit inch of the non-white ink layer is 180 to 1440 dpi. 
     
     
       9. The method according to  claim 6 , wherein a size of white ink droplets discharged for recording the white ink layer is either larger or smaller than non-white ink droplets discharged for recording the non-white ink layer. 
     
     
       10. The method according to  claim 6 , wherein the non-white ink layer is a color layer, a black layer, or a gray layer. 
     
     
       11. A recording method in which a printing image including a white ink layer and a non-white ink layer is recorded to a recording medium, the method comprising:
 providing the white ink layer and providing the non-white ink layer on the white ink layer;   wherein a resolution of the white ink layer is higher than a resolution of the non-white ink layer, the resolution of the white ink layer being the number of ink droplets of a white ink per unit area in a region where the non-white ink layer is provided on the white ink layer, and the resolution of the non-white ink layer being the number of ink droplets of a non-white ink per unit area in the region; and   wherein a white ink used for providing the white ink layer and a non-white ink used for providing the non-white ink layer are aqueous ink compositions.    
     
     
       12. The method according to claim 11, further comprising drying the white ink, the non-white ink layer being provided after the drying.  
     
     
       13. The method according to claim 11, wherein the resolution per unit inch of the white ink layer is 600 to 9600 dpi, and the resolution per unit inch of the non-white ink layer is 180 to 1440 dpi.  
     
     
       14. The method according to claim 11, wherein a size of white ink droplets discharged for recording the white ink layer is either larger or smaller than non-white ink droplets discharged for recording the non-white ink layer.  
     
     
       15. The method according to claim 11, wherein the non-white ink layer is a color layer, a black layer, or a gray layer.  
     
     
       16. The method according to claim 11, wherein the non-white ink is any of a black ink composition, a gray ink composition, a cyan ink composition, a magenta ink composition, a yellow ink composition, a light cyan ink composition, a light magenta ink composition, a red ink composition, a green ink composition and a blue ink composition.  
     
     
       17. The method according to claim 11, wherein the recording medium is any of a film, coated paper, paper coated with a resin and synthetic paper.  
     
     
       18. The method according to claim 12, wherein the drying is performed by heating or air drying.  
     
     
       19. The method according to claim 11, wherein the white ink contains a white pigment, and the non-white ink contains a dye or a pigment.  
     
     
       20. A recording method in which a printing image including a white ink layer and a non-white ink layer is recorded to a recording medium, the method comprising: providing, in a case where the recording medium is transparent, the non-white ink layer and providing the white ink layer to the non-white ink layer;
 wherein a resolution of the white ink layer is higher than a resolution of the non-white ink layer, the resolution of the white ink layer being the number of ink droplets of a white ink per unit area in a region where the white ink layer is provided on the non-white ink layer, and the resolution of the non-white ink layer being the number of ink droplets of a non-white ink per unit area in the region; and   wherein a white ink used for providing the white ink layer and a non-white ink used for providing the non-white ink layer are aqueous ink compositions.    
     
     
       21. The method according to claim 20, further comprising drying the non-white ink, the white ink layer being provided after the drying. 
     
     
       22. The method according to claim 20, wherein the resolution per unit inch of the white ink layer is 600 to 9600 dpi, and the resolution per unit inch of the non-white ink layer is 180 to 1440 dpi.  
     
     
       23. The method according to claim 20, wherein a size of white ink droplets discharged for recording the white ink layer is either larger or smaller than non-white ink droplets discharged for recording the non-white ink layer.  
     
     
       24. The method according to claim 20, wherein the non-white ink layer is a color layer, a black layer, or a gray layer.  
     
     
       25. The method according to claim 20, wherein the non-white ink is any of a black ink composition, a gray ink composition, a cyan ink composition, a magenta ink composition, a yellow ink composition, a light cyan ink composition, a light magenta ink composition, a red ink composition, a green ink composition and a blue ink composition.  
     
     
       26. The method according to claim 20, wherein the recording medium is any of a film, coated paper, paper coated with a resin and synthetic paper.  
     
     
       27. The method according to claim 21, wherein the drying is performed by heating or air drying.  
     
     
       28. The method according to claim 20, wherein the white ink contains a white pigment, and the non-white ink contains a dye or a pigment.  
     
     
       29. A device for recording by the recording method of claim 11.   
     
     
       30. A device for recording by the recording method of claim 20.