When printing or copying I m getting thick black

If an inkjet printer gives white streaks where it should be black, it means the ink is very low, or there is dirt under the nozzles preventing it from printing properly, or, in the case of non original cartridges, ink might be leaking which prevents the bubbles of ink to squirt onto the page.

If the streaks are black where it should be white, is sounds like some dust or fluff below the cartridge leaves ink smears on the page.

you make a new page until you perfect

The line is probably not from the ink cartridges or nozzles (assuming regular printing doesn't streak). Streaks on copies and transmitted faxes are usually due to dirt or problems on the scanner unit. First clean the flat bed of the scanne. If you have an automatic document feeder, clean that.

Clean with a lint free cloth moistened with a little water or glass cleaner. Make sure no foreign objects are in the ADF path or on the glass. For pictures see the Lexmark support site: http://support.lexmark.com/index?page=product&linkSelected=node0&locale=EN&userlocale=EN_US#1. Then enter "streak on copy" - the solution comes up in a pop up.

If the streak is shrinking, then copy a blank white piece of paper to identify where to clean further. Try scanning another page with a small mark on it. (These are particularly helpful for cleaning the ADF.)

If the mark occurs when you print, then check if you have a damaged cartridge or other ink that has spilled inside the printer.

I hope this helps.

Cindy Wells

Most likely it is the drum cleaning blade. One indicator of the drum cleaning blade going bad is that the black lines will get worse as you run multiple copies. So if you make 10 copies for example, the last copy out will be streaked worse than the first copy out. Drum cleanig blades are about $30 bucks plus whatever your local service guy charges for a svc call.
Good Luck and Thank You for using Fixya.

Hello sir; Either drum cleaning blade or drum cartridge needto replace.

Are you sure this is a Designjet 450 (large format printer) and not a Deskjet 450 (portable printer)? The following assumes you have wispy black streaking on the printed side of the paper. If the streaking is on the back side then post more details of the printer model and the issue.

In either case the most likely cause is a buildup of fibers on the underside of the printheads or carriage, causing wisps of black ink to be dragged on the paper when the carriage reverses direction. You can clean the printer as shown at the following (though the details will be somewhat different for the Designjet or Deskjet....).

Regards,
Bob Headrick, MS MVP Printing/Imaging

ok..save the window..those print heads are clogged, and good. You MAY need to run that print cleaning at least 8 times, to get that gook out of there.

http://tinyurl.com/6qcpgy

Hi, please attempt to run a numerous blank paper through the printer. This will dry or clean any ink found on the rollers.
Continue to run blank pages through the printer until no more ink is found on the paper, then attempt printing. If ink stains or streaks are still present, the printer may need service.

Tirzo

It is because coping is not the best way to get a perfect copy on the printer, Try scanning with computer using black and white photo it will come out much better if you are doing a pic. then use color picture.

It sounds like excess toner has built up in or around the imaging drum. I would *carefully* remove the toner and drum (can be messy) and use some canned air to clean the inside out. If you are still getting these streaks, it might be time to get a new drum (DR 400) as you are supposed to replace the drum every 6 to 8 times you change the toner cartridge.