Blank streak down page when printing

SOURCE: Streaks on printed page

You need to clean the printer. See your manual for instructions. It is probably dust on the laser lens

SOURCE: black line on right side of prints

the drum life is over, change PC drum, also you may clean laser glass whats under the pc drum

SOURCE: Magicolor 2530 DL

The streaks are typically a sign of a toner drum going bad, or possibly just dirty, or even caused by the toner being low, as you have mentioned it to be. 1 way I know to 'clean' the drums is to have the printer run multiple blank pages. If your software will not allow you to print blank pages, type a single character by using this little trick, hold down the ALT key, and type 2 5 5 on the number pad in a blank text document. This will allow you to print the "blank" document, I would suggest about 10 copies. This should help for a short duration, and doesn't use any toner.

Hope this helps!
Backu

SOURCE: Konica Minolta PagePro 1350W laser printer. Have

your carteidge OPC duram is faulty .
so change cartedige

SOURCE: streaks on printed page full length even after installing new cartridge

i took out my drum and cleaned it with alcohol and then wiped down the inside of the printer anywhere the drum touches with a towel soaked with alcohol and the did about 40 prints and it fixed my pagepro (with each of these 40 prints the the quality got better)