Smudging on invitation card stock can usually be contributed to the type of paper card stock, the type of ink and the printing process.

• Some common printing processes are inkjet, laser printing, offset, and letterpress. Some card stocks and papers perform better when inkjet printed while others do better with laser technology. On each of our product pages we do indicate our recommendations. The more conventional print methods such as offset or thermograpy should not have smudging issues.
• Different Inks and toners are made differently from manufacturer to manufacturer therefore some may require more drying time than others. We do suggest using the ink brands recommended by your printer manufacturer.

Some people might benefit from the Perfect Printing Pouch and suggest reading Is the Perfect Printing Pouch for inkjet only?