Re: Black and Grey Printing looks watered down even with...
The Imaging Unit needs to be replaced. If you have not printed more than 20K of pages, then you can call Samsung for a replacement of the IU for free. It is a defect I think in the product. I have 7 of these and have replaced the Imaging Unit at least 5 times to date.
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If you touched the electrical contacts on the cartridge the high voltage used could be taking a shorter path to ground. Try cleaning the contacts on the cartridge and inside the printer with a lint free cloth and some 99% isopropyl alcohol then wipe dry.
Ensure that cartridge are not refilled, then only you do the following process:>Got to printer properties>printing preferences>color>select print in grey scale>apply>OK.. Then check..Reason why its act like this: In printer properties if its selected as print in color, printer mixes colors to create black(which is visible look like dark grey).Select in properties as above said before clicking OK for the print command, then only printer uses mono cartridge..
You're just going to have to keep printing until you see which cartridge is getting dry. It'll be either the black one or the colour one. This way you won't buy the wrong cartridge. If you print black text and it starts to come out grey then it's the black cartridge that needs to be replaced. The same with colour, if the picture looks faded then you'll need a new colour cartridge.
I fixed my ESP 3250 print problems by removing the cartridges and print head. Using a Q-tip and warm water, added drops of water to each of the print head ink wells until the water / ink from the wells bled thru onto a cleanex. Did this several times. Dryed the print head fairly well. Then added a drop of water to each cartridge for each color. Reasembled and ran an alignment and to my surprise, it works! I hadn't used my printer in a while, so the ink had dryed on the felt for both the print head and cartridges.......
Yes, this printer has fixed printheads and must have ink in each color to prevent damage to the printheads. Even when printing black only each color is spit in the servicing area to keep the printhead unclogged.
Regards, Bob Headrick, Microsoft MVP Printing/Imaging
I solved this problem but probably not what the printer manufacturer would recommend! The reason you are just getting grey is that the black ink cartridge is either empty or dried out from non use and only the color cartridge is working. I had the same problem after being away for 5 months. I put the printer cartridge in a bowl of warm water to disolve the dried out ink on the print pad. I dried off the cartridge with a soft cloth and then it worked perfectly.
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.