Why is the opc stained with toner and how to deal with it

1. توجد مواد لزجة على قلب الأسطوانة، مثل الشحوم، إلخ.

Solution: wipe the drum core with a clean soft cloth.

2. The powder is not filled well

Solution: Fill the powder carefully, don't add too much at one time.

3. Toner quality is not good

Solution: select good quality toner.