How to deal with vertical black stripes appear on printed text?
If the paper is still in the same position after changed paper , you need to replace the cleaning blade.
If the printed of text have ink uneven or leakage phenomenon，After several prints, the fault was remained unresolved.
（1）The toner is damp;
（2）The cartridge seal is deformed or not in place;
（3）The powdered carbon is too full.
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