Question about HP DesignJet 450c InkJet Printer

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The black ink on my HP 450c prints with white streaks and gaps. I've cleaned and primed the cartridge on two different black cartriges. The pre-defined print quality print continues to have white streaks, although it did improve somewhat.

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Send an email to me at kw7157@yahoo.co.uk and I can send you a checklist of all the things to look at as it is too large to include here.

Posted on Sep 11, 2009

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1 Answer

Originally the black ink would not print. replaced, primed, cleaned. nothing, the same problem, no black ink. Now I can't get the cartridge light to quite blinking. It is not steady orange, but a...


First off, if you touched the metal contacts on the printer or cartridge, you could damage or leave a film on the contact surface. Take it out of the printer, with a qtip dip in rubbing alcohol, squeeze out access, rub surfaces, air dry, and reinsert again. If still no ink, turn the print end up under the very hot water tap and run for 2 minutes. Dry and replace. It may do the trick.

Mar 01, 2014 | HP DesignJet 450c InkJet Printer

1 Answer

When we attempt to print it leaves black streak marks. At first it printed all black and when we went to setup under maintainence we chose alignment and clean cartridges. This worked however we still see...


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.

Aug 23, 2011 | Lexmark X4650 InkJet Printer

1 Answer

HP L7700 officejet printer leaves streaks on black ink lines only. Have cleaned heads repeatedly, changed black and color cartridges - nothing works.


Print in grayscale (black area streaking only) If the streaks are in a black area of a black and white printout, change to grayscale printing.
NOTE: This step does not apply to color printouts.
  1. In the application you are printing from, click File , and then click Print .
  2. Make sure the printer is selected and click Properties .
  3. Click the Color tab, and select Print Grayscale and High Quality .

Nov 28, 2009 | HP Office Equipment & Supplies

2 Answers

I put a new ink cartrige and printer prints low coulour tone.


A technique to improve print quality is to try and clean the cartridge nozzles. You may clean the cartridge by following the steps given below: 
1. Go to the "Lexmark solution center." This can be done by clicking on "Start," go to "Programs" and Lexmark printer group. Click on the "Lexmark Solution center." Next click on the "Maintenance" Tab.  2. Select "Clean and Fix Horizontal streaks."  Click on "Print". This will produce a printed page. 
The colors that you should see here are black, yellow, magenta (a reddish purple) and cyan (a dark sky blue). You should notice the diagonal lines above and below the solid horizontal lines. These diagonal lines should be solid from left to right with no gaps. 
If there are gaps in the lines or the print diminishes across the page, you should run the "Clean Print Nozzle" page a couple more times to try and clear it up. If you still have gaps at the top and bottom, you should "wick" the cartridges by following the steps given below: 
1. Please open the "Solution center" again and go to the "Maintenance" Tab.  2. Select "Install color/black cartridge" and remove the cartridge or cartridges from the printer.  3. Get a damp paper towel.  4. Set the ink cartridge right side up on the damp paper towel so that the ink nozzles are against the towel and hold the cartridge in this position for about 15 seconds.  5. Now wipe the print head (on the bottom where the ink comes out) across in one direction only (left to right) until it looks clean.  6. Next dab the cartridge on the towel to make sure that the ink is flowing.  7. Snap the cartridges back into the printer.  8. On your computer, select "Old Cartridge install."  9. Repeat the "Clean Nozzle Page" one more time. If this fails to address the problem the entire procedure may need repeating.

May 26, 2009 | Lexmark Color JetPrinter 5700 InkJet

2 Answers

450c color problem


The 430 ID is B/W, you need to load the 450C driver to get color, renaming the driver isn't enough.

Oct 13, 2008 | HP DesignJet 450c InkJet Printer

1 Answer

Black smudges on printed page


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

Sep 16, 2008 | HP DesignJet 450c InkJet Printer

4 Answers

No black ink print. Prints in light blue


Cartriges have a shelf life. It's printing in blue either because it has dried up or is out. Different cartriges have different timelines but if you haven't been using the printer often, it could have dried up or is simply out of ink. I would suggest first to try cleaning the head of the cartrige where the ink comes out with alcohol and a Q-tip and then if that doesn't work, buying a new black cartrige.

Nov 06, 2007 | Office Equipment & Supplies

2 Answers

Streaks / Bands of broken print area


First with a clean soft cloth and a very small amt of alcohol clean off the underside of the printer carridge (the holder for the print heads) also where the print heads cleaning station is clean out any large masses of congealed link. Then remove the ink cartridge in question and with a pencil eraser gently rub the contacts and both the cartridge and the carridge replace the cartridge. Using the software tools for the printer clean and align the printheads ( if there is an option to do so). If this dosn't fix the problem try a different ink cartridge.

Sep 04, 2007 | HP OfficeJet Pro k550 Printer

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