Unknown Printer

How to Identify and Fix Common Problems ?

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

If your printer is spitting out pages full of strange characters, symbols, or strange formatting, your inkjet printer drivers may be outdated, incompatible with your operating system or corrupt. Drivers are important to the proper function of your inkjet printer and it is best to check for updates regularly.
Skewed or Crooked Image on Copies and Prints

Refer to the paper and paper tray specifications for your printer. Make sure the paper tray settings are properly configured for the paper size and type loaded in each tray. Verify that the paper tray guides are against the edges of the paper loaded in the paper tray.

Your printer can become misaligned if there is any paper stuck in the machine, print cartridges are clogged or dirty, improper installation of cartridges and using low quality cartridges. Additionally, a printer can become misaligned after the machine completes a large print job.
Correcting Paper Feed skew

This is the most common cause for this issue. Check the paper pick rollers for each tray. Clean off the rollers with a dry cloth and try printing again. If cleaning the feed rollers does not correct the issue, see if the feed rollers are worn or dirty.

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.
These types of lines are typically caused by dirt or white out (correction fluid) on the scanner unit, or one of the corona wires for printing is dirty. This problem is usually resolved by cleaning the scanner glass, scanner glass strip and white plastic bar with a soft lint-free cloth, or cleaning the corona wires.
Wrong Printer Driver

When your output looks slanted, not because it`s skewed on the paper but because the material on the page appears falsely italicized or otherwise distorted, you may be using the wrong driver software for the combination of your computer hardware, operating system and printer.

For Windows

Right-click the printer icon on the taskbar, and then select the Print Head Alignment. Or access the printer software, click the Maintenance tab, and then click the Print Head Alignment button. The printer prints test patterns that you use to check the print head alignment. Here are sample printouts.

Start > Devices and Printers > Right click your printer > Printer Properties > Preferences > Page Setup and change the Orientation.
About Flexo Print Distortion

Distortion in flexographic printing occurs when the (relatively) soft material of the printing plate is wrapped around the hard cylinder while being mounted on the press.

Shadow printing is a printing technique that creates a lighter shade of the text off centered to make the text appear to have a shadow beneath it.
Automagically straighten the skewed PDF

Click the `Deskew` button and then `Download` your straightened PDF. The deskew algorithm will automatically rotate the scanned images inside the PDF to make sure they are perfectly aligned and no longer skewed.

“Lines on a Copy” is caused by debris on the scanner glass. Debris can range from dust, wite-out, or ink. If the scanner glass appears clean, use the bad copy to help you find where the scanner glass is dirty.
Streaking is usually caused by a worn out drum unit or spent toner cartridge. Drum units are a consumable and only need to be replaced after the use of 3 or 4 toners. Not all printers use a separate toner and drum unit.
A printer printing lines on the page are normally caused by a blocked, dirty, or damaged print head. Blocked ink cartridge nozzles, or not removing protective seals correctly when you installed a new ink cartridge can also cause missing lines of print.
Here`s what to do if you find crooked or skewed images on copies, scans, or sent faxes. Clean the printer`s paper feed roller and the glass. Before scanning, copying, or faxing, make sure that the original document is free of any debris or dirt. Check and see if there are no obstructions in the paper path.
The printer is either low in toner, the density is set too low, or the Economode may be turned on. Remove the toner cartridge and shake it. This will redistribute the toner and often will temporarily solve the problem. However, this usually indicates it is time to install a new cartridge.
Common causes include dust and grime, worn rollers, or inappropriately weighted paper. Prevent paper jams by regularly cleaning your printer and replacing parts as needed. Check the weight of paper that your printer is rated for as well. The printed product is faded.
Turn the product on while you press and hold the Resume button for 10-20 seconds. The Attention light turns on. Release the Resume button. The Attention and Ready lights cycle while the product restores factory defaults.
A: We suggest checking calibration regularly, at least every 6 months, or immediately if the unit has been treated roughly. laser levels should be calibrated when they are not shooting their specified accuracy.
Rotate the body of the laser 180 degrees to shine the opposite side of the laser to the wall and again mark the height as Y2. All four sides of the laser have now been marked. In principle all four marks made should be at exactly the same height, if they are then it is perfectly calibrated.
Why is skewness a problem? Most of the statistical models do not work when the data is skewed. The reason behind this is that the tapering ends or the tail region of the skewed data distributions are the outliers in the data and it is known to us that outliers can severely damage the performance of a statistical model.
Skewed data is cumbersome and common. It`s often desirable to transform skewed data and to convert it into values between 0 and 1. Standard functions used for such conversions include Normalization, the Sigmoid, Log, Cube Root and the Hyperbolic Tangent.
A cartridge may be running out of ink even if the graphic shows ink remaining (see the note at the start of this section). Lines or streaks always appear in printouts when the cartridges begin to run out of ink. Replace print cartridges that are out of ink or low on ink.

Relevant Questions and Answers :

the most relevant questions and answers related to your specific issue

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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LaserJet 4 won't Power Up
ANSWER : I haven’t seen that particular behavior on that model. It either works or it doesn’t. My first choice would be the power supply.

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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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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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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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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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HP Color Laserjet 3800 problem when printing color
ANSWER : Do a cold reset

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