Canon Pixma IX6550
Hi, I have a Canon IX6550 which is not printing magenta. I’ve replaced the printhead and all the inks but with no luck. All the other colours print fine. The purge unit is fine and not clogged up, carriage assy connectors and trailing cable both tested fine. Has anyone any ideas what could be causing it?

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It`s usually because the printhead inside your printer is clogged or dried out. Like with most printers, Canon printheads can clog due to ink or dust drying up and collecting in the nozzle.
Blocked Print Head Nozzle

Blocked ink nozzles often result in skewed color output or fine white lines in the print. Whenever you see a sudden shift in color quality or accuracy, run a nozzle check. Learn About Running Nozzle Checks and other Printer Maintenance.

If the nozzle check pattern does not print out properly, check if any of the missing colors are due to those color ink tanks being empty. If there is plenty of ink and the printer does not print, clean the Print Head then print the nozzle check pattern to ensure ink is ejected properly.
Your printer may be printing pink as the other ink cartridges have run out. Common printer-to-page technology processes colour in four parts; cyan, magenta, yellow and black (CMYK), or toner. The ink cartridges in your inkjet or colour laser printer are split up into four colours.
Prints that appear more green are commonly caused by an absence of magenta ink/toner being put to paper by your printer. In addition to your prints looking “greener” you may also notice yellow and blue areas appear almost neon due to the the magenta not being able to give them more realistic tones.
A color that, for centuries, has captivated many, magenta is a mixture of violet and red. Its hex code is #FF00FF.
If your printouts have incorrect colors, try these solutions: Make sure the paper type setting matches the paper you loaded. Make sure the Black/Grayscale or Grayscale setting is not selected in your printer software. Run a nozzle check to see if any of the print head nozzles are clogged.
First, check your printer settings on the file or picture your trying to print. If your page is setup to print in “grayscale” it will only print in black and white. Change the setting to “default” so it will print in color. If your settings look good from the start, the cartridge may just need to be primed.
Right-click the printer icon on the taskbar, then select Nozzle Check.
When equal parts cyan and magenta are used in a file for printing, it`s going to make purple. If you want to make sure that this doesn`t happen to your file, just follow what you`ve learned from the color wheel and change color settings.
The ink levels may be low and you may need to refill the ink. Visually check the ink levels. Also make sure you filled the tanks with the correct colors of ink. After you print, the colors in your printout need time to set as the ink dries.
Clean the printheads: Sometimes the issue why you are unable to print in color is because our printheads are clogged with ink. Clean the printheads and then print a document to check if color printing works. Some printers also have in-built programs that can clean themselves so remember to check for that.

Relevant Questions and Answers :

the most relevant questions and answers related to your specific issue

Magenta bands (wide) on Epson R1800 6×4 prints
ANSWER : These printers are meant to be good for the fashion and it could be more meaningful for the people and they can use it for many purpose. Jack peralta black jacket

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Canon Pixma IX6550

WF-7610 No Longer Printing Magenta
ANSWER : Assuming you are using the menu function to clean the heads, that uses wet ink to clear dry ink clogs. Imagine how well that works. You need to inject some cleaning fluid into the nozzle for the magenta to really clean the head. There are a bunch of Epson cleaning kits available on eBay.

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Canon Pixma IX6550

Magenta ink shows full, but not printing
ANSWER : One thing to try is to remove the printhead and flush the magenta nozzle under hot running tap water. Take all the ink out and there is a lever on the right that releases the print head from the assy.

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Canon Pixma IX6550

Print file sent but no printing occurs
ANSWER : Been working on these since they first were released. Never seen a problem like yours. If it happens again, try doing an engine test, as it bypasses the formatter board. The engine test is located at the right side of the manual tray opening. Look for a hole in the side wall. Stick something like a paper clip into it to actuate the test button. It will then print a lined test page. If it does that, then it points to the formatter board as the cause of your problem.

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Canon Pixma IX6550

Prints blank pages, won't print from computer
ANSWER : Don’t know why you replaced the fuser, but assuming you had print before, then it must have been something you did during the procedure. Only thing I can suggest is to recheck your work. Just because you reinstalled a connector doesn’t mean that it is seated firmly enough to work. Any flat ribbon connectors that you removed and reinstalled, check to see that the contacts are all flat and not peeled back.

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Canon Pixma IX6550

My printer feeds through one piece of paper all the way and then a half piece of paper and stops. I pull out the paper to stop the paper jam and then it prints but sounds rough. After printing, it doesn't feed the paper all the way through.
ANSWER : And the first 2 sheets, the full and half sheet that go through first, are blank.

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Canon Pixma IX6550

when printing front and back, the front will print well but the back will fade
ANSWER : It happens because second side voltage is much higher and the board breaks. Are you getting this issue in auto duplex only, or same error you are getting when you print second side manually?

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Canon Pixma IX6550

Magenta bands (wide) on Epson R1800 6×4 prints
ANSWER : I am so appreciate for this post because you are sharing your printer experience in this blog I am getting more information on your post you have more problems on printers so sharing it. Dean Ambrose Black Leather Jacket

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Canon Pixma IX6550