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T640 printing in negative image. The letter are white and the backround is dark as

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My Dell 1720dn mono laser printer has not printed properly for some time - in fact it's dreadful! The letters and dark images have white vertical lines going through them, and some of the printing do


Change your toner cartridge. A properly working toner cartridge will never leave that much toner lying around. The white lines are an indication that either the toner is low, or the mag roller is defective.

Dec 05, 2014 | Dell 1720dn Laser Printer

3 Answers

Printer prints mirror image only.


check the menu in the printing section. there should be a section that gives you mirror images, dark background white letters etc..
need more info on the model .

Aug 19, 2008 | Office Equipment & Supplies

2 Answers

I want to print white format on black paper


about the problem is the warm-up color

Oct 06, 2012 | Zebra ZM600 Printer

1 Answer

My Lexmark T640 does not seem to recognize paper "tray 2". I want to print legal, but it only prints from tray 1. How can I get the printer to recognize and use tray 2 so I can print legal AND letter?


2 things
1st make sure the paper guides are set correctly on the trays for legal make sure it's exactly on legal or it put the tray into universal mode. (To clarfiy the guides in the back which allow you to put legal in the tray.)
2nd Go into menu and then to paper menu and adjust/ confirm the settings for tray 1 and 2. Based on your question tray 1 is letter and tray 2 is legal, so make sure both of the tray size and type are set correct.

Oct 21, 2010 | Lexmark T640 Laser Printer

1 Answer

I am curious if there is an easy way to print and change positive to negative. What I mean is I want to print a recipe out of a magazine that has a ligt printing on a dark background. Rather than use a ton...


Yes you can but it's called setting the print color to "black and white" only. This way the solid black page will be just a very light gray and uses less ink.

To change the print color to "black and white", go to your printer icon in Control panel and right click on your primary printer (the one that is on default). Next click the button "printing preferences" or click on the tab that says the same. Click on the tab that says paper / quality and choose the "PRINT BLACK OR WHITE" option.

That should help you save your black printing problems.

Let me know if this worked for you ok?

Aug 09, 2010 | Office Equipment & Supplies

1 Answer

My Lexmark T640 prints out white text and black background instead of black text on white paper


Go to control panel select printers and then select lexmark left click and open printing preferences select graphics tab and uncheck the negative box, the printing will be normal from now on.

Jun 04, 2010 | Lexmark T640 Laser Printer

2 Answers

Can't figure out how to print on statement sized paper.


After I had been attempting to adjust the paper guides in the feeder tray to accommodate statement-size paper, I finally "discovered" the drop-down door to the manual feed tray.  Duh!  This is a networked printer that I've only ever used for printing letter and legal sized documents until now.

May 28, 2009 | Lexmark T640 Laser Printer

1 Answer

Print quality on Lexmark T640


There are 2 likely possibilities:
1. Very dark print usually indicates your charge roller is not removing the charge from the drum.
The charge roller "erases" the charge laid down by the laser from the previous pass and prepares it for the next portion of the image. If not erased or has a latent charge it will pull toner onto the drum. Try changing the charge roller . 2. Your wiper blade in the cartridge may not be properly wiping excess toner. Swap the toner cartridge with another and see if the problem goes away.
There is a video here you can watch on changing the charge roller:
http://www.fastprinters.com/TechSupport_repair_parts.asp#T640VIDEO

Mar 24, 2009 | Lexmark T640 Laser Printer

1 Answer

Want to print on legal size paper from Tray 1 (top) as default


print menu - config and verify paper is being sensed correctly. If paper size in tray is not set correctly printer will ask where to print from

Feb 12, 2009 | Lexmark T640 Laser Printer

1 Answer

Gray backround


Does your scanner software give the option to choose different modes...grayscale, color, black & white?? This sounds like it's scanning in grayscale....if you can change it to black & white, the background should remain white.

Jan 24, 2008 | Epson Perfection 1670 Flatbed Scanner

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