|Printing jam occurs
||Is the paper roll creating too heavy a load for the printer’s motor? If the load is too high, the motor loses sync and a print jam may occur.
||Reduce the load on the motor by using a smaller or lighter paper roll.
|Is the paper surface too sticky? Some papers may adhere to the printhead and cause a printing jam.
||Try using a different type of paper.
|Is the printing speed abnormally slow? If the printing speed becomes extremely slow, colored print may adhere to the printhead and cause a jam.
||Adjust the setting to print data as fast as possible.
|Is the paper roll too large or too heavy? This will cause friction and increase the load on the motor.
||Reduce any friction created between the paper roll and paper bucket. Use a spindle or add rollers or ribs to the bottom of the paper bucket to lessen contact with the paper roll.
|Is sync lost when the paper is pulled by the motor?
||Remove any wrinkles or folds from the loaded paper prior to printing. When wrinkled paper is pulled by the motor, it generates a large load on the motor and a printing jam can occur.
|Is the paper roll rubbing on the side of the paper holder? If so, this friction causes the paper load to increase and sync is lost.
||Ensure that the paper roll is not too wide for the holder and that there is some space between the edge of the paper roll and the side of the paper holder.
|Does the paper misalign itself while feeding into the printhead?
||Ensure that the paper is loaded flat and is feeding straight into the printhead.
|Motor acceleration slowly increases from a rest state to full speed.
||Ensure that the motor acceleration ramp-up sequence is correct. Sync may be lost if the motor does not accelerate, or if acceleration is too quick.
|Is the motor current sufficient? If the current is not adequate, torque becomes low and the motor may lose sync.
||Check that the motor current is adequate to maintain sync and proper torque.
|Is there unnecessary pressure being placed on the platen? If so, the motor load increases and a printing jam may occur.
||Remove any unnecessary pressure on the platen.
|Is the paper route appropriate? Undue friction from an unsuitable paper feed path may cause a printing jam.
||Try reorienting the paper path to one that is more suitable to the type of paper being used, e.g, a straight feed path vs. a curved path.
|Paper jams occurs with cutter.
||Does the cutter come to a fully closed position when it cuts the paper?
||Check to see that the blade completely closes when cutting and that there is no paper debris caught in the blade.
|Paper jam occurs with the rotary cutter.
||Is there paper debris in cutter?
||Remove any paper debris.