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Re: black colour prints faded
Have you adjusted the settings on the machine and in the driver to heavy stock? That will make a difference in the transfer of the image adn the fusing.
Telling the machine you are printing onto heavier stock makes a differenec. if this is a print job, it will have to be changed on the machine and in the print driver. The machine will ask you to confirm the paper settings when you add paper.
You have to select the paper type in the driver.
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If colours are faded I would recommend running several cleaning/deep cleaning cycles to try and pull through the colours. It is difficult to say without seeing the print quality, but it sounds like an issue with a partially blocked printhead within the printer. The printing in blue would suggest to me that one of the blacks in your printer is blocked. Were all 5 colours present on the nozzle check?
When you say "Cleaned the lens" I presume you mean the four LED print heads. Use a spirit to clean them with if the toner dust is hard to remove. I usually just use a finger and wipe the entire length. Make sure there is no foreign item laying on the drum top where the black plastic film is as the led head may not seat properly on it. Clean all the silver high voltage springs down the left side of the printer. They make contact with the drums. If you still have a problem then try printing solid colour blocks ie Yellow, Magenta ,Cyan and Black . This will identify which colour is giving the problem . Change that drum and all should be well.
Everyone will tell you that it's the Imaging Unit - happy to say that's not true. If it was the imaging unit the colors would not come out right either. I bet if you print a test page that all the colors come out fine across the page. It's only the black. Also - if you replace the black toner cartridge, or reinstall your printer and drivers like some people will tell you - still no results. The problem is in the black toner cartridge PATH inside the printer. Something has jammed it up a bit. Try taking out the black cartridge and blowing firmly into the small hole at the bottom of the spout that looks to have a sponge inside. Use a straw and make sure your air blown is dry. Then lightly tap the cartridge a few times. Then use the straw and once again blow very firmly inside the receiving path (inside the printer) for the spout on the cartridge. Make sure you are blowing into the spout path at the bottom - not the gear drive path in the middle - as that will not do any good. Replace the cartridge, warm up and print another black and white page. You should see that the faded out section is gone or diminished in size. If it is not gone, simply repeat the above steps until it is gone. You will see that the faded out strip gets smaller and smaller each time until it's gone. I had to repeat five times, but eventually got it corrected. Now prints like brand new so don't get discouraged. Loki
This could one of a few fairly major problems.
The easiest way to track down the fault is start by replacing the consumables - make sure you install them in the correct positions - it is possible on the C1100 to put them in the wrong places!!
Change the toners first. Most importantly the magenta and yellow. Print several pages. Use MS Paint or similar to create a page with all four component colours on (cyan, magenta, yellow and black)in large blocks (see image below) and print them full page.
Now look at the print and see if any one colour is missing or has reduced density.
If you have a spare PCU you should but that in next.
Let me know what the print outs look like and we will progress to the next step.
Hi Desperate for help
I had a similar trouble with my printer it turned out that when I bought a replacement ink tank they gave me a photo quality cartridge and you can't mix them you need all photo quality or all plain cartridges check for that hope this helps