Our Verifone VX520 is printing light blue now instead of black. Is the terminal weaaring out, or can this be fixed

SOURCE: Our hp designjet 500ps plotter

I emailed you for free technical support, We dont want to purchase anything.
Thanks anyway.

SOURCE: Printer print blue instead of black

I have the same problem with my ip 5200, when printing a document in plain black.. I spoke to canon support and they suggested to save the .doc document as a txt file before printing. It works. Not too sure if this uses any colour ink to produce the black.

You can also set the printer on grayscale. However, the printer uses the colour ink to produce black.... hence printing in black & white becomes rather expensive.

If anyone has drivers to fix this problem please let me know...

SOURCE: hp c4480 prints blue instead of black

Check the print properties and verify the black ink cartridge still has ink in it.

Otherwise, you may have a bad ink cartridge. If the cartridge has not been used for a while, the ink gums up the nozzle. You can try cleaning the ink cartridge and slot with alcohol. However, new color and black cartridges may be the best solution.

SOURCE: Canon MX310 - print is gray instead black. How to fix it.

This is apparently only a problem on Macs. The workaround I found is to do a Print Preview (which, in fact, generates a pdf) and then print from the preview instead of directly from the original document. Slightly easier than saving to a pdf. Unfortunately, Acrobat Reader 9.0 also prints gray instead of black and won't allow the use of Preview :-(((

SOURCE: I have an omni 3750

I am not an expert, but in my experience, the printer door is the problem. Try applying pressure while it is printing. If it prints better, it may need to be replaced.