Lexmark X644e User Manual

Card stock is single ply, and has a large array of properties, such as the moisture content, thickness, and texture, that can 
significantly affect print quality. See 

 for information on the preferred weight and for the grain 

direction of print media.

Try a sample of any card stock you are considering using with the MFP before purchasing a large quantity.

After printing approximately 10,000 pages of card stock (or each time you replace the print cartridge), complete the 
following steps to maintain MFP feeding reliability:

Print five sheets of paper.

Wait approximately five seconds.

Print five more sheets of paper.

When printing on card stock:

Set the Paper Type menu item in the Paper menu to Card Stock from the control panel, from the MFP driver, or 
from MarkVision.

Be aware that preprinting, perforation, and creasing can significantly affect the print quality and cause print media 
handling or jamming problems.

Avoid using card stock that may release hazardous emissions when heated.

Do not use preprinted card stock manufactured with chemicals that may contaminate the MFP. Preprinting 
introduces semi-liquid and volatile components into the MFP.

We recommend the use of grain short card stock.

Use the following guidelines to avoid paper feeding problems and uneven print quality.

Store paper in an environment where the temperature is approximately 21°C (70°F) and the relative humidity is 
40%.

Store cartons of paper on a pallet or shelf rather than directly on the floor.

If you store individual packages of paper out of the original carton, make sure they rest on a flat surface so the 
edges do not buckle or curl.

Do not place anything on top of paper packages.

Store paper in its original wrapper until you load it into the MFP.