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How to Identify and Fix Common Problems ?

Our sources include academic articles, blog posts, and personal essays from experienced technical support :

1 Answer. In the Print dialog, disable “Print in grayscale” if selected, click on the “Advanced” button and make sure that the “Negative” option is not selected. If you can`t deselect “Negative”, change Color option from Composite to Composite Gray, for example, deselect Negative and change Color back to Composite.
What`s happening is that the drum or rollers could have a fingerprint or dirt that is smudging the toner on the page as it passes through to the fuser. It is normally caused by the rollers. If the marks are always in different places, then it`s most likely to be the drum.
The issue usually arises when someone tries to open a PNG file in Photoshop or you try to copy a PNG file in Photoshop. Basically, when you copy a PNG file from the Internet, the system doesn`t copy its background information. As a result, when you paste it in Photoshop, it automatically gets a black background.
Open your device`s Settings app . Select Accessibility. Under “Color and motion,” select Color inversion. Turn on Use color inversion.
If you print in mostly black, your black cartridge will naturally run out faster than the color cartridges. However, some printers will pull a bit of ink from the color cartridges when you are printing solely in black, just to keep them primed for future use.
If the contacts between the cartridge and the printer are dirty or clogged, there is a high chance that this can be the main cause for the ink to leak on the paper. To properly clean the contacts, open the printing machine and remove the ink cartridges and place them on a clean piece of paper.
Enable the “Show Desktop Background Image” Option

Usually, the reason why your background turns black is down to how you`ve configured your display settings. To resolve it, you could start by enabling the “show desktop background image” option.

You save the image as a JPEG, not the panel, so the JPEG has the default background, which shows up as black.
Remove Black Background using Blend Modes

By default, the Blend Mode is set to `Normal`. If you are working with explosions or fire, a very simple way to remove the solid black background is to change the Blend Mode to `Screen` or `Add`.

The primary reason why PDF shows a black screen is the file corruption. When the pipeline tries to read such a document, it is unable to scan the information properly, resulting in the error. Sometimes, the PDF black screen appears due to the missing plug-ins responsible for playing the file format.
Turn on Dark Theme

To activate to go Settings > Accessibility and find the `Display` subheading. The dark mode toggle should be under this sub-heading to turn off or on.

To underprint, or print white on black paper, you simply swap the traditional position of the white toner cartridge in the printer with the cyan cartridge by moving it to the last slot. There`s no flushing the lines or any of that – you literally just pick up the first and last cartridges and move their positions.

Relevant Questions and Answers :

the most relevant questions and answers related to your specific issue

HP Laserjet 1320tn printing grey instead of black
ANSWER : Try this test. Put a page into the manual feeder and do that same test. When the end of the page is just about to enter the printer, open the lid. Take out the toner cartridge and pull back the shutter. Look at the image and see if it is black. The explanation is that there is high voltage going to both the toner cartridge and the charge transfer roller below it. If the image on the drum is black, then the fault is at the transfer roller not getting enough high voltage. The transfer roller pulls the image off of the drum and down onto the paper. It would not be a laser scanner problem as any issue with it would not result in an overall gray image, but combination of gray and black. It will probably turn out to be a bad HV power supply, which will need replacement. I’ve never seen this particular problem on this model.

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I replaced the black toner cartridge and now the printer shakes though it is fine when I set it for grayscale only prints
ANSWER : You need to unlock the carousel. Once you unlock it and remove the toners, ignore all the rest of the crap. Pick any color and align the cartridge slot on the left side like you would have it to remove the cartridge. Then pull out on the gear towards you on the right and drop it so the right slot is lined up as well. You can get it aligned pretty close by just eyeballing it visually. I’ve never seen the left side go out of alignment, just the right, so this method has worked for me everytime.

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HP LaserJet 2200D won't print configuration page
ANSWER : Find someone with a HP LaserJet 4100 and you can configure the card to the IP you want:

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Laserjet 4250 print quality issue (see image)
ANSWER : It looks like a fuser problem. One way to prove it is with the half-stop test. Put a sheet in the drop down manual feed tray. Send a print job and watch the paper. When the end of it is about to enter the printer, open the lid and take out the toner cartridge. Look at the printed image. If it looks OK, then it is a fuser problem. If not, then it is a toner cartridge issue since it hasn’t gone through the fuser.

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My 2550n Color LaserJet does not want to print in color
ANSWER : That model had issues with the carousel solenoid sticking. That might explain why it works after you let it sit for 10 minutes. The solenoid gets hotter with use which causes the deteriorated foam on it to become sticky and hold down the release plate instead of letting it go. This allows the carousel to spin when it is supposed to stop for each color. The solenoid is located on the right side of the printer. If you open the lid, it is just behind the opening at the top right. You need to remove the top of the printer and scrape off the goo on top of the solenoid body. I put a piece of thin sticky backed felt to replace it. Other people use electrical tape.

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Print file sent but no printing occurs
ANSWER : Been working on these since they first were released. Never seen a problem like yours. If it happens again, try doing an engine test, as it bypasses the formatter board. The engine test is located at the right side of the manual tray opening. Look for a hole in the side wall. Stick something like a paper clip into it to actuate the test button. It will then print a lined test page. If it does that, then it points to the formatter board as the cause of your problem.

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Black line printing in the middle of the page from top to bottom
ANSWER : Take out the toner cartridge and look at the drum. If you see the line, replace the cartridge. If you don’t, then you need to replace the fuser assembly.

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Prints blank pages, won't print from computer
ANSWER : Don’t know why you replaced the fuser, but assuming you had print before, then it must have been something you did during the procedure. Only thing I can suggest is to recheck your work. Just because you reinstalled a connector doesn’t mean that it is seated firmly enough to work. Any flat ribbon connectors that you removed and reinstalled, check to see that the contacts are all flat and not peeled back.

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