It is important to define this shade in spot color
The CMYK value with 50% black will only be used for display and will not allow you to manage the amount of Metallic ink.
Metallic ink percentage management
When the shade is created, a window will appear that will allow you to define the percentage of metallic ink:
In our case, the value to obtain the desired rendering is 50%.
Creation of the areas on which we will apply the metallic ink
Removal of texts on the "Metal" layer
Since we don't want to "metallize" the texts, we will remove them from the "Metal" layer
To do this, select all the texts with the option:
Select > Object > All text objects
Delete selected texts
There are only the objects that you want to "metallize"
Creation of the areas on which we will apply the metallic ink
To select the areas on which we will apply the Silver Metal ink, we will use the "magic wand" tool with a tolerance set to 100%
Select one of the patches with the "magic wand" tool
Once all the patches have been selected, assign the "Metal" shade.
All gray "Metal" patches will correspond to "metallic" areas In our example, all the color patches and the Coraye logos will be metallic.
Overprint management
To allow mixing of the "Metallic Silver" ink with the other inks, it is necessary to print in overprint mode. To do this, you have to select the two layers (Swatch Book and Metal) Display the "Attributes" window and check "Overprint Fill"
o display the "Object Option" window in Illustrator:
Tab: Windows > Output > Attributes
Change the order of layers
When you are going to display the pdf of the color chart, by default you will display the first layer (except if you simulate the overprint).
If you want to display the colored patches rather than the gray patches, position the "Swatch Book" layer at the top.
Save in pdf format
Now all you have to do is print your color chart with your favorite RIP.
Make sure the spot colors used in your pdf document are defined in your RIP's spot color table.
