Unknown Printer

How to Identify and Fix Common Problems ?

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Many people assume that when a printer prints something in black and white, it doesn`t use the color cartridge. But with grayscale setting printing, the printer uses color ink or toner cartridges in combination with black to produce different shades of gray.
The drum cartridge may be defective. If you have a spare cartridge, replace and try to copy and print again. For details, refer to Replace the Drum Cartridge or follow the installation instructions that are included with the new cartridge. If the problem persists, contact Support.
There are numerous possible causes for a printer that`s randomly producing blanks. The most common ones are empty ink cartridges, improper cartridge installation, and congested nozzles. Driver and software issues can sometimes cause this problem as well.
Why Do I See A Grey Background or Sticking Lines on The Paper? Grey Background: A damaged or worn OPC may cause toner powder unable to adhere to magnetic roller correctly, hence, toner powder may fall on the print-out and causing background issues.
In the CMYK model, grey is obtained by adding black (K). To compose a tone of grey, make sure that you set your black (K) color to a certain percentage between 0% and 100%. Avoid using the three other colors (by setting Cyan, Magenta, and Yellow to 0%).
For Windows:

From the Control Panel, select Printers and Devices and then Printers. Go to Quality Option and then check the box on Grayscale. Click on OK to set printing to Black & White. Click on Apply.

Usually a quick paper setting adjustment will clear up a ghosting issue right away. Run a cleaning – Most printers have a cleaning function built into the machine. Run this a couple of times to attempt to clear up the printing issue. Inspect the drum – Sometimes excess toner powder can stick to the drum.
Clean the print head, if necessary. Make sure the paper size, orientation, and layout settings in your printer software are correct. Make sure your document does not contain blank pages. If your printer software has a Preview option, you can check for blank pages before you print and remove them, if necessary.
A gray cast indicates that the drum is not getting or holding a sufficiently strong charge to hold the toner. It looks like either the OPC drum or the corona wire/primary charge roller is not working correctly. Try replacing the cartridge (the drum is part of the cartridge in many HP laser printers, including yours).
A printer can`t dilute its ink (or toner), so any spot of ink (or toner) it lays down will have the full color intensity of the ink. Instead, the printer “dithers” the output, which approximates the grayscale value by having dots of ink separated by a gap, such that the average brightness matches the grayscale value.
For optimal results, we recommend a gray that is made from a combination of multiple inks; Cyan, Magenta, Yellow, and Black (CMYK). The additional coloured dots ease the transition that our eyes perceive. It`s a delicate balance, because if even one colour is slightly off, your gray can take on an unexpected hue.
Sophisticated computer chips inside the inkjet printer convert the electronic image data into precise instructions that are sent to the print head, which in turn communicates with the ink cartridges to tell them exactly how and when to produce their tiny droplets of ink.
Sophisticated computer chips inside the inkjet printer convert the electronic image data into precise instructions that are sent to the print head, which in turn communicates with the ink cartridges to tell them exactly how and when to produce their tiny droplets of ink.
Can printers print white ink? Unfortunately, standard laser and inkjet printers are unable to print using white ink. Most standardised printers will mix cyan, magenta, yellow, and black inks to create the colours that you print but white has no hue, so it cannot be achieved by mixing inks.

Relevant Questions and Answers :

the most relevant questions and answers related to your specific issue

My printer feeds through one piece of paper all the way and then a half piece of paper and stops. I pull out the paper to stop the paper jam and then it prints but sounds rough. After printing, it doesn't feed the paper all the way through.
ANSWER : And the first 2 sheets, the full and half sheet that go through first, are blank.

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Unknown Printer

41.3 unexpected paper size on a 4050
ANSWER : I have 3 white plastic levers towards the back of it. The top is set in the next 2 are out. Top one is loose. I have a two tray so I switched 2 to 1, and 1 to 2. still get the 41.3 Help

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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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Unknown Printer

Paper jam in tray 2 (but no paper pulled from tray) also M476DN models
ANSWER : Isopropyl alcohol is not recommended for rubber rollers. It dries out the rubber and hasten it’s cracking and breaking. It will do nothing to restore the grip. Those rollers are really hard to replace. It would be easy if that dumbass secondary menu really worked. None of the techs I’ve spoke to ever got into it. Everyone I know sends a print job and listens for the roller to rotate into position where you can pull it off.

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Unknown Printer

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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Paper tray jammed
ANSWER : Check from the back of printer to see if some paper lodged at top of tray and has jammed it up – you may be able to work it out from the back side. If not you may have to partially disassemble the printer and/or tray to get the tray out.

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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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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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Unknown Printer