The prints show horizontal lines offset.

change copy setting from normal to best as a work around

Adjust vertical offset in printer properties. If that doesn't fix it, adjust it under "advanced". Or... you can set the offset in the printer itself. Hold down the left two buttons at the same time. Cycle through the settings until you get to vertical offset.

I think, it's a CCD Error. That means a complete Line fails.

Black horizontal lines ( page is held Portrait ) ,
where print is affected the print image fails to show behind Line effect but shows in between-
the drum surface has been damaged ( likely wear and tear) and can no longer maintain an even layer of electrons due to leakage/short
solution:
replace the toner cartridge which houses the drum.

clean the print heads and align them

Hi Kaylene, i`ve experience that before.. Just set the print set-up/ preview into horizontal.. The dialog box of print preview will show you the position of your text before printing Dymo Label! goodluck!!

The rims on cars are often given letter codes indicating the degree of offset. If you wheel is 15mm offset then it should always be 15mm. By fitting wider wheels the wheel not only sticks out further but also sticks in by the same amount. For example if you moved to a 8" width rim, this is an approximate increase of 50mm, the offset of the new rim should still be 15mm but the wheel now sticks out a further 25mm and also stick in by 25mm. The offset always remains the same and any increase in rim width should be balanced either side of the offset line. Failure to do this will result in an altered geometry of tire contact point with the ground. This might make the car take on a an aggressive stance but it will ruin the handling at slow speed and be downright dangerous at high speed.

Check out @ http://lexmark.printertechsupportnumbers.com/ I think this will helpful for you.

see if you can set the printer preferences to borderless printing.

i think the inside printer have dirt or obstacles that blocken the cartridges while printing.
try to clean manually the printer by using powerful air blower,repeatedly.