There are three different ways Pantone colors can affect the way your job prints.
first is by object effects, such as shadows or glows, on top of your Pantone colors. Here is what the effects will look like on screen:
Here is what the effect looks like after printing:
As you can see, when a Pantone color is under these object effects, transparency issues show up during printing. To avoid this, convert all your Pantone colors into CMYK before submitting your order.
The second way Pantone colors can affect your file is when you use transparent images. Here is what a transparent image looks like on screen:
Here is what a transparent image looks like after printing:
You can see the image is no longer transparent on top of the Pantone color. These white areas will show up during printing. To fix this issue, convert all your Pantone colors into CMYK. This must be done before submitting the order.
The last way Pantone colors can affect your order is the color conversion between a Pantone color and CMYK. If you use Pantone colors in a job that will print CMYK, your job might print with undesirable colors.
Here are some examples of what the Pantone color looks like in the Pantone color book and what the CMYK print will look like:
If you send in a job with Pantone colors, the CMYK conversion will change the Pantone color. Before sending your order, make sure all Pantone colors have been converted to CMYK.