Question about HP DeskJet 6840 InkJet Printer

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My printer may need a cleaning. some lines are

My printer may need a cleaning. some lines are printing only half the letters and sometimes I'm getting stray lines where there shouldn't be anything.

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Clean the printer head. change the ink thread.

Posted on Jul 15, 2009

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Run the printer configuration to allign your print head and clean it up. also check your ink level and i hope the ink is not drying up too cos that could cause it too

Posted on Jul 15, 2009

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1 Answer

Prints half page


Printing half a page with an Inkjet machine is not normally a computer issue. So windows 10 would not normally have any effect on the printing for a printer that has been accepted by the Windows 10 Operating System. If there was an issue in the software it would be printing gibberish or not printing at all.

Printing half a page is quite possably something stuck in the printer stopping the ink from getting to that half a page if it is printing down once side but not the other.
Printing half a page being that the top half is printed but not the bottom half (Or the other way around) it could be an air bubble in the feed line which can be cleared with a printhead clean or two.
Printing half a line rather than a full line such as the top half of each letter is clear but the bottom half of each letter is not visable is a blocked printhead. A couple of printhead cleans can also fix this.
Also check to see if the printer is not confused and actually has empty cartridges even if the printer thinks they are full. Brother printers can easily get confused about ink levels. If the cartridges are actually empty, replace them and away it should go again.

Hope that helps

Mar 09, 2016 | Brother MFC-490cw All-In-One Inkjet...

1 Answer

Photosmart C7280 only prints half the letter/line the part that prints is perfect but I would like the rest of the letter. Is the printhead out of position?


The print head is dirty, of defective.

Try a few cleaning cycles (the hp tool kit is in your HP program menu)

If this does not improve you image, replace the print head

Jan 07, 2011 | Office Equipment & Supplies

1 Answer

About a month ago, I bought new cartridges for my Epson NX400. It will print every color but the black ink on the test pages and on the things I print out. However, I have only printed one page since I got...


Black printer ink in HP Printer may fail to be recognized by the printer. Most times an error message will be sent indicating that something is wrong with the black print cartridge. Sometimes the printer may accept to print with the black ink, but the printouts may have horizontal lines and very illegible letters. In such a case a manual cleaning of the print head should be carried out. In doing the manual cleaning, one should spray Windex heavily on paper towel and wipe off the surface of the print head.

Nov 25, 2010 | Office Equipment & Supplies

1 Answer

My printer only prints half the letter


for this clean the printer cartridge and check if its not working try with new cartridge ..........

Dec 10, 2009 | HP DeskJet 3930 InkJet Printer

1 Answer

The top half of letters on certain lines of print are offset by about half a letter space from the bottm half of the letters. Usually but not always the same lines. help please


This usually indicates a need for a new print cartridge or the printer head is dirty. You can run the automatic printer cleaning utilities. Note: do them several times.
Also, if you are a little handy, use Qtips and rubbing alcohol and clean the print head.

Sep 18, 2009 | Epson LQ-590 Matrix Printer

1 Answer

Prints complete lines with occasional lines half height of letter


Your printer cogs may be damaged or your paper rollers could be slipping resulting in this "odd" output.

Paper rollers can be cleaned with an appropriate cleaning kit but if the cogs are damaged it's not worth repairing.

Jan 22, 2009 | Epson Stylus CX6600 All-In-One InkJet...

1 Answer

ON SOME LINES OF PRINT, THE ENTIRE LETTER DOES NOT PRINT


Do a printer utility deep cleaning and possibly be prepared to replace the cartridges

Nov 23, 2008 | HP Photosmart 8450 InkJet Printer

1 Answer

L7780 won't print on edge of paper


it could be the printer settings. Before you actually print something go to File>print:- and then choose properties, click on advanced and ensure that the correct paper and size is set to how you want it.

Oct 28, 2008 | HP Officejet Pro L7780 All-In-One InkJet...

1 Answer

HP 5740 Printer skips top half of several lines


try a letter with brown letters to see if it is the black ink cartridge Refilled cartridges do that from time to time

Sep 12, 2008 | HP DeskJet 5740 InkJet Photo Printer

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