Question about Canon PIXMA MP780 All-In-One InkJet Printer
I'm not sure what do you its no longer printing black?
But lets start by some troubleshooting steps:
First perform the head cleaning:
Try to print a document in Grayscale Printing mode.
Canon information: Why color ink may be used when printing in black and white
Even when printing in black and white, color ink is used for the following reasons:
1. Automatic cleaning of the print head.
To prevent the print head nozzles from clogging, the print head is automatically cleaned periodically. At that time, a small amount of each color ink is consumed.
Therefore, although printing in black and white is performed, color ink is also consumed.
2. Color inks may be used to create black.
When printing in grayscale or on photo paper or when duplex printing, although printing appears in black and white, the color black may be created using the three (cyan, magenta, and yellow) color inks. Printers without a pigment black tank / cartridge will print black / grayscale will create a composite black using color ink even on plain paper.
Therefore, although printing in black and white is performed, color ink may be consumed.
3. In order to keep the heavy black ink from smearing on the page or in the printer, color ink is used when duplex printing to help create black text.
Posted on May 21, 2009
a 6ya expert can help you resolve that issue over the phone in a minute or two.
best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
Posted on Jan 02, 2017
Tips for a great answer:
Jul 12, 2010 | Brother DCP 165C Compact Color Inkjet...
Feb 06, 2010 | Canon PIXMA MP780 All-In-One InkJet...
Sep 27, 2009 | Canon PIXMA MP780 All-In-One InkJet...
Apr 17, 2008 | Canon Office Equipment & Supplies
Jan 12, 2008 | Canon PIXMA MP780 All-In-One InkJet...
Jan 29, 2007 | Canon PIXMA MP780 All-In-One InkJet...
180 people viewed this question
Usually answered in minutes!