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I have a brother MFC 3240C. My Black ink stopped printing(initially printed horizontal faded lines and gradually got worse), the other colors were printing fine. I tried cleaning numerous time( 50 -100 times over 1-2 weeks ). Still no improvement. The way I print now is:
1. I go to Printer Properties
2. Change Media type from "Plain Paper" to "Inkjet Paper".
3. Change Quality to "Photo".
This takes a long time to print 1-2 minutes per page. However, this works for me since this is my Home printer and use it for printing only few pages here are there.
What you are describing is a bad print head. You can try running the eliminate light stripes several times, and jet substitution, but most likely the print head will have to be replaced to remedy your problem. You can try googling. Phaser printer print heads or phaser printheads. There seems to be a secondary market appearing for those print heads. I can tell you from Xerox, if you have no maintenance agreement, they cost $750 per print head. Honestly, having worked on about every type of color printer known to man, the new solid ink phaser printers, produce a dry ink image of 2400 x 2400 dpi with ink particles that align end to end. The resolution of those printers are remarkable and can be purchased for less than the price of one of those new print heads. Now for reliable, albeit somewhat not as sharp a color image, but still exceptional, you really can not beat an HP. The ink stick technology really no longer has the color vividness advantage it initially had. The inks that align end to end, have ended that advantage and are sure a lot cheaper to operate per page.
Press Green Tick, Right, -> System Setup -> Right, Right, -> Print Quality, Right -> Replace Supplies.
Change from stop at out, to override at out.
It'll let you print, and you'll get loads more out of your toner before the pages start to fade.
Have you tried cleaning the leans at the bottom of the printer? Open the cover, pull out the drum. Under it is a long, narrow piece of glass. If it gets dusty or toner accumulates on it, it will cause streaks in the printing. If this is dirty, take a clean, soft cloth and very gently wipe it off.
The print heads don't appreciate being out of ink so the Brother printer has sensors to prevent that but the tape defeated that prevention. Maybe more cleanings or maybe a cartridge with printhead cleaning solution will help. Otherwise, I fear a new printer.
The imaging bar has speck of dust on it.
Turn printer OFF.
Open the printer.
Pull out the transfer roller. Should have a big green handle. Do not touch the roller.
Look inside for a shiny rectangular block about 5inches x 0.5 inch.
This is the imaging bar. Using a lint free cloth with no chemical and no water, gently wipe this bar to remove any specks of dust/paper specks.
Put roller back.
Close the printer.
Turn printer ON.