HP Color LaserJet 2840
The color when printing will print a true color (such as red) and then the next copy might be pink. Sometimes it does not print green. It does not happen all the time but lately it is more often. I hanged all toners and drum still doing it . Please help
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I changed all toners and drum and it is still doing it.
How to Identify and Fix Common printer Problems ?
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Check the ink levels and replace the color ink cartridge if it is low/empty. Check if the color ink light is blinking on the printer. The ink cartridges that come with the printer are setup ink cartridges that are required to initialize the printer. During initialization, a large quantity of ink is used.
Run a nozzle check to see if any of the print head nozzles are clogged. Then clean the print head, if necessary. The ink cartridges may be old or low on ink, and you may need to replace them. Your printed colors can never exactly match your on-screen colors.
If your PC or the LCD screen on your printer is telling you that your ink cartridges are full but no ink is passing through to the paper, then it`s most likely that you are dealing with a clogged printhead. Blurry documents and images that appear faded are also signs that it`s time to remove the excess ink.
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.
After all, colors will pop more against a rich black than they will against gray. When you order full color print, we recommend using 80% cyan, 80% magenta, 80% yellow, and 95% black to ensure that your black appears as dark and rich as possible.
The way colours are displayed on a computer monitor is by emitting light through combinations of red, green and blue LEDs (RGB). However, in digital print (eg. a desktop printer or commercial digital press) we generally see colours through light passing through dots of cyan, magenta, yellow and black ink (CMYK).
A common cause of faded, faint printouts from your inkjet printer is dried ink particles causing a blockage in your printer. The printheads on an ink cartridge can be become blocked if the printer is not used for a period of time, so it is recommended to print a few pages each month to maintain the print quality.
Just above the circuit board on most printer cartridges, you`ll find a small button. You`ve seen these tiny buttons before on cell phones, phone chargers, etc. This is your reset button, and the only way to get in there is either with a paper clip or the tip of a pen (which will leave a tiny ink smudge on the button).
Because the RGB scheme has a greater range of colors, CMYK cannot produce brighter colors. These hues are beyond the CMYK range and will come out darker and more dull when printed than what you see on your display.
True color is an RGB color model standard that specifies 256 shades for red, green and blue spaces, totaling 16 million colors, much more than what the human eye can distinguish, which is only 10 million colors. This allows for very complex graphics and images, hence the name.
Why is your printer printing pink? 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.
Why is my printer printing yellow not red? It is most likely that your image is yellow where you were expecting it to be red and you may also notice that blue parts of the image appear turquoise instead. Both of these effects are caused by a lack of magenta ink/toner on your prints.
The reason may be quite simple – your cartridge is dry or clogged. Still, adding fresh ink may not resolve the situation. Try to wipe the cartridge with a lint-free cloth dampened with isopropyl alcohol. Please avoid touching the metal parts of these cartridges and the chip not to damage their electrical contacts.
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ANSWER : I changed all toners and drum and it is still doing it.
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