Colour won't print - HP Deskjet 5150 Inkjet Printe

YOU SHOULD USE HP 21 BLACK INK CARTRIDGE FOR BLACK PRINTING.IF YOU USE 22 COLOUR CARTRIDGE YOU WILL GET ONLY GREAY PRINTING ONLY.I AM RIGHT?IF YOU USE COLOUR CARTRIDGES MAY YOU WILL GET MONEY LOSE. BECOS IT WILL FINISH EARLY.BLACK INK COST IS LESSTHAN COLOUR INK CARTRIDGES. SO YOU SHOULD BUY BLACK CARTRIDGE FOR REAL BLACK PRINTING.

The nozzles of the color cartridge is blocked or u have set the photo print to gray print

The printed colours are an "additive" mix of the "primary" colours in your printer.

So, when the colour ink-jet cartridge is "out-of-ink" on one (or more) of its colours, the "mix" will be off, and the "wrong" colour will be the result.

Change the colour cartridge.

Before changing it, run a "deep-cleaning" cycle, using the HP Support software that was installed when you installed from the CD-ROM that came with the printer, to "clean" any/all "clogged" ink-jets -- i.e., a clog could be preventing one colour of ink from being sprayed onto the paper.

Chances are you colour cartridge is empty, the black will print green if colour cartis empty

you say hp Deskjet 5150 then 880c so go to this web page to get the right info, you hae a bad cartridge most likely but enter your name and the correct printer number and you can get free help for this product/
http://h10061.www1.hp.com/ccsearch/search?pname=HP+Deskjet+5150+Color+Inkjet+Printer&opname=HP+Deskjet+5150+Color+Inkjet+Printer&qry=won%27t+print+green+color&method=prodFinder&enc=UTF-8&ctry=us&lang=en&dlc=en&sni=304431&search=0&submit.x=0&submit.y=0

Dear friend, your Black Ink Cartridge is Empty thats why your printer is using the Colour Cartridge to produce the Black Colour. This is the reason you are having Dark Reddish Brown colour instead of Black.

Try `driverguide` on the net.
Update your printer driver, this should solve your problem.
Also check the printer lead is ok

If is an original brand? Some generic cartridges or refill ones gave that problem.

Ink has leaked into the printer and messages say problems with colour/black ink cartridge. Would cleaning the ink out of the print solve problem and if so what solvent is best to use.

Graeme

re-install the print drivers. if it still doesn't print problem lies in the bubblejet power supply - not user fixable