Question about Canon PIXMA MP780 All-In-One InkJet Printer

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Canon MP780 printing blank pages only

My Canon MP780 has started printing blank pages since I removed and cleaned the print head. (Up until then there was a problem with the cyan not printing properly).

I have replaced the printhead with a new one today and put in new cartridges - still nothing. It goes through the correct motions of printing, but every single page is blank.

I have run the clean/head refresh cycle many times - still nothing.

If I remove the printhead and touch it lightly on paper towel, I can see the colours coming through.

There are no error messages.

In the service manual it suggests that the purge tank may need replacing, but it doesn't show where this is and what needs to be done.

Any help gratefully received.

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6 Suggested Answers

  • 6 Answers

SOURCE: Canon MP730 won't print at all (blank pages).

try to move the blue nozzel over the printing head to the from the right to the left and try, it will work

Posted on Mar 20, 2008

JongCur
  • 88 Answers

SOURCE: i860 won't print properly

Buying a new printhead is a mighty good suggestion, it seems you have pretty well used up the maximum service life of your printhead, if i'm not mistaken. Try to reinstall your printer along with its software. Go to settings>control panel > remove hardware> then,reboot. After, rebooting, re-install your printer software and drivers.

Posted on Apr 09, 2008

  • 1 Answer

SOURCE: MP830 Cyan Ink won't print

To Fix the stupid Cyan, just unplug the printer, it may take more that one time unplug, its stupid problem, printer needs to reset, I have a full ink of Cyan but it says this "There is more than one Cyan" on the dispaly on the printer, and windows that its missing. I don't know what idiots programmed the printer. but screw them.

for cool stuff check out my site http://www.gagla.com

Posted on May 03, 2008

hemantraj
  • 638 Answers

SOURCE: Bad cyan printhead

try to clean with tissue will mostly solve if does not solvethen go for replacement.rate this as fixya to encourage us to solve more and more problems like yours.good luck.

Posted on Jun 14, 2008

  • 300 Answers

SOURCE: I have just re-started my

Yes vintos after long storage problems with the printer heads may arrise.

Thermal changes from being in storage can cause the printer heads to dry up and fail.

DO NOT USE ALCOHOL or other solvents in an attempt to clear the printer heads.

1. Attempt to change ink cartridges , this may clear the issue.

If that fails , you may be forced to change printer heads at that point.

Link to Printer Trouble Shooting. ( generic steps for all printers )
http://www.duxcw.com/digest/Howto/troubleshoot/print/index.html

Thank you for choosing FixYa!
Az. Wizard Division.

Posted on Sep 23, 2008

solofixya
  • 34 Answers

SOURCE: I have just re-started my

I would suggest removing the printhead, make sure there are no more dead roach's under the printhead, also make sure all lights on the ink tanks are lite up, the first error code you mentioned has to do with the ink tanks, the second one has to do with the printhead. I would suggest un-installing the printhead, then reinstalling it doing the alignment, and that should clear the error code.

Posted on Nov 13, 2008

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Replaced ink cartridges, printer goes through all the motions, but paper comes out blank. I have done all the maintenance steps. What gives?


Cannon ink cartridges go into a print head. This is normally a removable box the ink cartridge sits in.

First remove the head and the cartridges from it. Now try this to clean the old ink off the print head, rub/soak the print head in alcohol. Make sure the print head is complete dry and place the ink back in it and return to the printer. Try to print a page, if you have the same results you need to replace the print head.

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How do i remove and clean the printhead from a canon pixma mp780?


Hi there. i understand that you want to clean the printhead of your canon pixma mp780, dont worry im here to help you out with this.
do this following steps in order for you to clean the printhead.If the printed Nozzle Check Pattern is broken, missing, or a specific color is not printed, clean the print head.
  1. Press the <Menu> button on the printers operation panel repeatedly until [MAINTENANCE] appears in the LCD.

  2. Press the left [<] or right [>] arrow buttons to select the cleaning setting you want. Select [HEAD CLEANING] or [HEAD REFRESHING] for deep print head cleaning.

    Take Note: [HEAD REFRESHING] uses more ink than [HEAD CLEANING], so perform [HEAD REFRESHING] only when necessary ok?

  3. Press the <OK> button.

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Every time we print, there are blank line across the pages. We've cleaned and replaced cartriges


If the ink has ever run out, if a cartridge has been removed and left empty, or if the printer has remained unused for more than 6 months or so, the print head is probably clogged.
From your description, this unit uses plain ink cartridges (no print head on the cartridge). The print head in the unit likely needs to be replaced. This can be pricey. Get a quote first. See tips on inkjet printers

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Solution: Perform the print head cleaning procedure MP750 / MP780

Print Head Cleaning / Head Refreshing If the printed Nozzle Check Pattern is broken, missing, or a specific color is not printed, clean the print head.
  1. Press the <Menu> button on the printers operation panel repeatedly until [MAINTENANCE] appears in the LCD.

  2. Press the left [<] or right [>] arrow buttons to select the cleaning setting you want. Select [HEAD CLEANING] or [HEAD REFRESHING] for deep print head cleaning.

    Note: [HEAD REFRESHING] uses more ink than [HEAD CLEANING], so perform [HEAD REFRESHING] only when necessary.

  3. Press the <OK> button.

  4. Print a Nozzle Check Pattern and perform at least two Head Refreshings if the pattern is not correct.

Now if you mean not printing the letters correctly go to this site and download the drivers and reinstall them. Also you will find manuals on HOW TO sort of thing:
http://www.usa.canon.com/consumer/controller?act=ModelInfoAct&tabact=SupportDetailTabAct&fcategoryid=238&modelid=10444#DownloadDetailAct

hope this helped, please leave rating

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1 Answer

Canon pixma mp780


From the front panel (Macintosh and Windows)Press MENU or SETUP (depending on the model).
Press the right ARROW repeatedly until the display window reads Maintenance.
Press ENTER.
Press the right ARROW repeatedly until the display window reads Align Print Cartridges.
Press ENTER. The unit will begin the alignment process and the display window will read Printing Alignment Page
Verify that the alignment was successful after the page is complete.

Jul 11, 2008 | Canon PIXMA MP780 All-In-One InkJet...

2 Answers

PIXMA MP780 printing trouble


If you haven't done so, I would try another new cartridge. It is entirely possible (and occurs frequently) that you got a bad cartridge. Assuming you removed the tape from the cartridge before putting it in, this is generally indicative of either a bad cartridge, bad print head, or that heads or ink tanks may need cleaning.

The Canon support page for this printer is at:
http://www.usa.canon.com/consumer/controller?act=ModelInfoAct&tabact=SupportDetailTabAct&fcategoryid=238&modelid=10444

However, as Canon pages come up as generic pages (without the text I input for you), you will have to type in "missing black ink" (without quotes), to see the material they have posted in this regard. You will find instructions there in regard to how to clean the print heads, etc., if that is necessary. However, I would definitely try another cartridge first, especially if you haven't had that much use on the printer, such that you think these other measures may be necessary.

Please post back if you need further help, otherwise thanks for rating FixYa!

May 27, 2008 | Canon PIXMA MP780 All-In-One InkJet...

1 Answer

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Try uninstalling/reinstalling the drivers.

Is the error light flashing?

From the printer utility can you print a nozzle check sheet or align the printhead?

Does it seem to be printing (feeding sheet and moving printhead) or nothing happening at all?

Try removing all the tanks, take out the head. If blocked try cleaning manualy by running warm water over the ink ports/printhead jets - dry off and reinstall.

May 10, 2008 | Canon PIXMA MP780 All-In-One InkJet...

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If the printer works ok on another PC, it seems quite clear that the problem is definately software (Driver) related. If you haven't done so already, I recommend adding the printer through the Printer\Faxes Add Printer Wizard and pointing it to take the drivers off the install CD (if you have one) rather than installing the printer from the CD Autorun. Just make sure that you've deleted the printer completely from Printers\Faxes and rebooted before each install attempt.

I hope this helps!

Cheers,

Matt Coyote

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sometimes those measures of ink levels are not very accurate. actually they're usually rather far off... try a new cartridge Usually the easiest solution.

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