4. Why black
line on the vertical direction of opc drum?
toner leaks out due to the error
of printer components
1) Impossible to collect empty toners because the abrasion
of the blade is too seriously applied
2) Errors occur to developer roller
3) Errors occur to primary charge roller
If black line continuously appears and is caused by other
components, abrasion on the surface of opc
drum is likely to occur