Thank you for using the Support Forum. To get the best results with card stock first make sure it is within the specifications for the printer Weights One-sided: 16 lb. bond to 80 lb. cover / 60 to 220 gsm two-sided: 16 lb. bond to 65 lb. cover / 60 to 176 gsm. Make sure that you specify the correct type of paper when loading the paper trays. Take a look at this information about tips for choosing paper. Please consider contacting your support centre for further assistance.