Question about HP OfficeJet Pro k550 Printer

2 Answers

K550 air in ink feedlines

Air in all feedlines
one or more colors not printing at all or light print or one or more colors with streaks. I will run several printhead clean cycles and heads will start to print correctly. I will print several pages of mixed text and graphics and the problem will repeat. printhead health will change to fair on one or both printheads. KY printhead New, MC printhead used,
Ink Levels K 95%, Y 54%, M 76%, C 71%, Genuine HP Ink 88XL cartridges, from Sam's club less than 2 weeks old. Page counts as follows Tray 1 = 144, tray 2 = 699, Auto duplex = 28 total = 871.
Printhead expiration date: KY 11-26-2009, MC 4-23-2010 Ink Expiration: Bkack: 6-4-2011, Y-C-M all 7-2-2011, after several cleaning passes one or both printhead helth may return to good.

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  • Carl2020 Jan 23, 2009

    Prblem found. Ink station improperly installed (at factory?) Needles not going fully into ink cartridges so that sometimes they would pickup ink and sometimes air. Thanks for the help

  • Anonymous Apr 06, 2009

    No color prints and the black is very light. I inherited the printer so it wasn't used for 3 months, but have since replaced all cartriges and need to know how to fix.

    Thanks,
    Bruce

  • Martin Smallridge
    Martin Smallridge May 11, 2010

    The K550 is essentially a continuous ink supply (or CIS) system built into a printer and as such it's prone to the same kinds of issues.

    The black is particularly prone to issues with clogging in dry, hot environments because it's a pigment ink (which tends to clog quicker than the other dyebase inks) but your problem doesn't bear the hall marks of that issue.

    It sounds more like there is either an air leak in the system or a problem with the cleaning system. The confusing symptom is that more than one ink is being affected which is unusual.

    Could you be more specific as to which colours are being affected and if possible provide some images/scans of the sort of streaking you're seeing.


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I have had this happen a couple of times and have cured it easily. It has only happened with the black with me. It seems to be caused by air in the ink feed line. With the printer switched on open the top cover and hold the resume button for 5 seconds. The printheads should move to the left and you may be able to see air in the pipe(s). Remove the printhead of the offending colour(s) then insert a syringe with the plunger fully down into the rubber that the printhead connects to. Draw up the syringe plunger to draw ink/air through until you can see no more air in the pipe. Replace the printhead and close the cover. The printer should now do a calibration with the offending colour hopefully now working.

Posted on Mar 29, 2009

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Not sure what to do in a situation like this but I'll post this as a solution as we seem to have found it even if I didn't actually realise it was... Who knew :)

Posted on Jan 23, 2009

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Not printing correct colors all come out light brown or pink


For severe HP OJ 6500/6500A/7000 print quality/missing color issues, or incorrect color output, there could be an air bubble in the ink cartridge(s), an air gap between cartridge and PRINTHEAD, or a portion of the PRINTHEAD is dry (quite common), so you should first perform a CLEAN PRINTHEAD procedure from your printer control panel.
It is first suggested you print the SELF TEST or PRINT QUALITY REPORT (under TOOLS menu) to aid in identifying which color is causing the issue. Check that cartridge or cartridges to ensure they have plenty of ink inside.
NOTE: If one or more the colors were previously dry fired during printing (i.e. if you continued printing using only a few colors to one, air may have been accidently ingested into the ink lines between the cartridge(s) and PRINTHEAD. To recover from this problem, you may have to run the CLEAN PRINTHEAD procedure 2-3 times.
If a problem persists then it is suggested to review the steps outlined on the following HP 920 support pages, including printhead removal/printer cleaning and service station cleaning. It is suggested you refer to printer manufacturer instructions first as the Inkjet411 procedures are provided for general guidance purposes only. A dirty service station can cause poor image quality and/or ink cross-contamination between different colors:
http://inkjet411.retailinkjet.com/?page_id=1495
If the problem still cannot be corrected, then the PRINTHEAD may be dry and may need to be flushed (i.e. with warm water as it could have dried out, but this is a function of how much you print). Remove and thoroughly flush all ink ports for 2-3 minutes...thoroughly dry printhead prior to re-installing. Retest. For complete instructions refer to video here: http://inkjet411.com/?page_id=2412
Worst case scenario the PRINTHEAD may simply be electrically damaged or at end-of-life (while Officejet 6500/6500/7000 printer PRINTHEADS are rated for an estimated 15,000 pages, the average consumer may only see up to a 10,000 printed page throughput) and may require replacement. A severe failure of the PRINTHEAD is typically accompanied by error messages such as INCOMPATIBLE PRINTHEAD, REPLACE PRINTHEAD or INK SYSTEM FAILURE. NOTE: The PRINTHEAD will eventually fail in time. For more information on the how the PRINTHEAD works, watch the video here: http://inkjet411.retailinkjet.com/?page_id=1983
To verify Printhead electrical performance, activate the Tap 41 diagnostic test, (i.e. Pen Status: Pen OK).....for printer model instructions please visit: http://inkjet411.com/?page_id=1813
To solve other HP920 ink-series printer/printing related issues please visit http://www.inkjet411.com

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Hp officejet 6500 e709n print quality poor even after replacing print head


For severe print quality/missing color issues there could be an air bubble/air gaps in the printer ink lines or a portion of the PRINTHEAD is dry, so you should first perform a Clean PrintHead procedure from your printer control panel.
NOTE: If one or more the colors were previously dry fired during printing (i.e. if you continued printing using only a few colors to one, air may have been accidently ingested into the ink lines between the cartridge(s) and PRINTHEAD. To recover from this problem, you may have to run the Clean Printhead procedure 2-3 times.
If a problem persists then it is suggested to review the steps outlined on the following HP 920 support pages, including printhead removal/printer cleaning and service station cleaning. It is suggested you refer to printer manufacturer instructions first as the Inkjet411 procedures are provided for general guidance purposes only. A dirty service station can cause poor image quality and/or ink cross-contamination between different colors:
http://inkjet411.retailinkjet.com/?page_id=1495
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For more information please visit:
http://inkjet411.retailinkjet.com/?page_id=856
Worst case scenario the PRINTHEAD may simply be electrically damaged or at end-of-life (typically fails between 3,000 and 5,000 printed pages) and may require replacement, usually accompanied by error messages like Incompatible Printhead or Ink Delivery/System Failure. NOTE: The PRINTHEAD will eventually fail in time. For more information on the how the PRINTHEAD works, watch the video here: http://inkjet411.retailinkjet.com/?page_id=1983
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When instaling new ink carchage it won't print clearly. Is there any printing Mantainace software that can downloaded.


Clean the printhead
If your printed output is streaked or has any incorrect or missing colors, the printhead
might need to be cleaned.
This process uses ink to attempt to unclog and clean the nozzles in the printhead.
This might take a few minutes and will use one or more sheets of paper.
To clean the printhead from the control panel
1. Load letter, A4, or legal unused plain white paper into the main input tray.
2. Press Setup.
3. Press the down arrow button to highlight Tools, and then press OK.
4. Press the down arrow button to highlight Clean Printhead, and then press OK.
The product cleans the printhead.
5. Press any button to return to the Tools menu.
To clean the printhead from the Printer Toolbox
1. Load letter, A4, or legal unused plain white paper into the main input tray.
2. In the HP Solution Center, click Settings.
Work with ink cartridges 1513. In the Print Settings area, click Printer Toolbox.
NOTE: You can also open the Printer Toolbox from the Print Properties dialog
box. In the Print Properties dialog box, click the Features tab, and then click
Printer Services.
The Printer Toolbox appears.
4. Click the Device Services tab.
5. Click Clean Printhead.
6. Follow the prompts until you are satisfied with the quality of the output, and then click
Done.
There are two stages of cleaning. Each stage lasts about two minutes, uses one sheet
of paper, and uses an increasing amount of ink. After each stage, review the quality
of the printed page. You should only initiate the next phase of cleaning if the print
quality is poor.
If print quality still seems poor after you complete both stages of cleaning, try aligning
the printer. If print quality problems persist after cleaning and aligning, contact HP
support.
To clean the printhead from the embedded Web server
1. Load letter, A4, or legal unused plain white paper into the main input tray.
2. Click the Device Settings tab, click Device Services in the left pane, select Clean
Printheads from the drop-down list in the Print Quality section, and then click Run
Diagnostic

Good luck................Pete

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The head of your printer cartrige (black) are not detected by the printer because it was damage and need to be replace. So that no more black ink could print anyway.

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On my Test Pattern 2 the blue/light blue and green/yeallow have steeks in it. The documents that I print have streaks going across the page. I've cleaned everythign I can clean. The printer has 6,251...


SolutionFollow the given steps in the order presented to resolve the issue: Step one: Retry the print jobThe problem may occur only rarely. If you have not seen it in other printouts, try again. Step two: Increase the print quality modeIf reprinting did not help, try increasing the print quality mode.
  1. In the application you are printing from, click File , and then click Print .
  2. Make sure the printer is selected, and then click Properties .
  3. Select the Paper/Quality tab.
  4. In the Print Quality area, choose the next higher quality setting. If the current setting is Draft, choose Normal. If the current setting is Normal, choose Best.
Step three: 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 .
Step four: Clean the printheadsIf the print quality is still bad, clean the printheads.
  1. Make sure the printer is loaded with unused white paper.
  2. Open HP Solution Center .
  3. Click Settings , Print Settings , and then select Printer Toolbox .
  4. Click the Service Tab .
  5. Click Clean Printhead , and then click Clean .
Step five: Align the printheads If the print quality is still bad, align the printheads.
  1. Make sure the printer is loaded with unused white paper.
  2. Open the printer Toolbox , and select the Printer Services tab.
  3. Click Align Printheads . The Align Printheads window opens. Click Align .
  4. The printer prints an alignment page. The lines in the patterns should appear to be straight. Click OK when the page finishes printing.
Step six: Calibrate the linefeed If the print quality is still bad, calibrate the linefeed:
  1. Make sure the printer is loaded with unused white paper.
  2. Open the printer Toolbox and select the Printer Services tab.
  3. Click Calibrate Advanced Linefeed . The Advanced Linefeed Calibration window opens. Click OK .
Step seven: Replace one or both printheads If the print quality is still bad after performing all the above steps, one or both of the printheads will have to be replaced. Print a PQ Diagnostic page to see which printhead should be replaced.
  1. Make sure the printer is loaded with unused white paper.
  2. Press the Setup button.
  3. Press 1 and * simultaneously.
  4. Look at the color blocks labeled Test Pattern 2. Some or all of them could show white horizontal streaks. If none of the blocks are streaked, the printheads are okay.
    • If the Black block has lines – replace the KY printhead.
    • If the Cyan block has lines – replace the MC printhead.
    • If the Magenta block has lines – replace the MC printhead.
    • If the Red block has lines – replace the KY printhead.
    • If the Green block has lines – replace the KY printhead.

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If you get a slight line running across the page (from left to right) usually the indicates dust build up on the printhead or ink carriage. The dust acts as a paint brush being dragged across your paper as the carriage moves across the page during printing. You can clean the bottom of the carriage with a Q-tip or purchase some cleaning paper for your printer.

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1 Answer

Streaks though the pages


Step one: Retry the print job The problem may occur only rarely. If you have not seen it in other printouts, try again. Step two: Increase the print quality mode If reprinting did not help, try increasing the print quality mode.
  1. In the application you are printing from, click File , and then click Print .
  2. Make sure the printer is selected, and then click Properties .
  3. Select the Paper/Quality tab.
  4. In the Print Quality area, choose the next higher quality setting. If the current setting is Draft, choose Normal. If the current setting is Normal, choose Best.
Step three: 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 .
Step four: Clean the printheads If the print quality is still bad, clean the printheads.
  1. Make sure the printer is loaded with unused white paper.
  2. Open HP Solution Center .
  3. Click Settings , Print Settings , and then select Printer Toolbox .
  4. Click the Service Tab .
  5. Click Clean Printhead , and then click Clean .
Step five: Align the printheads If the print quality is still bad, align the printheads.
  1. Make sure the printer is loaded with unused white paper.
  2. Open the printer Toolbox , and select the Printer Services tab.
  3. Click Align Printheads . The Align Printheads window opens. Click Align .
  4. The printer prints an alignment page. The lines in the patterns should appear to be straight. Click OK when the page finishes printing.
Step six: Calibrate the linefeed If the print quality is still bad, calibrate the linefeed:
  1. Make sure the printer is loaded with unused white paper.
  2. Open the printer Toolbox and select the Printer Services tab.
  3. Click Calibrate Advanced Linefeed . The Advanced Linefeed Calibration window opens. Click OK .
Step seven: Replace one or both printheads If the print quality is still bad after performing all the above steps, one or both of the printheads will have to be replaced. Print a PQ Diagnostic page to see which printhead should be replaced.
  1. Make sure the printer is loaded with unused white paper.
  2. Press the Setup button.
  3. Press 1 and * simultaneously.
  4. Look at the color blocks labeled Test Pattern 2. Some or all of them could show white horizontal streaks. If none of the blocks are streaked, the printheads are okay.
    • If the Black block has lines – replace the KY printhead.
    • If the Cyan block has lines – replace the MC printhead.
    • If the Magenta block has lines – replace the MC printhead.
    • If the Red block has lines – replace the KY printhead.
    • If the Green block has lines – replace the KY printhead.

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1 Answer

HP L7680 Printer Head Problem


Normal 0 false false false MicrosoftInternetExplorer4 st1\:*{behavior:url(#ieooui) } /* Style Definitions */ table.MsoNormalTable {mso-style-name:"Table Normal"; mso-tstyle-rowband-size:0; mso-tstyle-colband-size:0; mso-style-noshow:yes; mso-style-parent:""; mso-padding-alt:0in 5.4pt 0in 5.4pt; mso-para-margin:0in; mso-para-margin-bottom:.0001pt; mso-pagination:widow-orphan; font-size:10.0pt; font-family:"Times New Roman"; mso-ansi-language:#0400; mso-fareast-language:#0400; mso-bidi-language:#0400;} Step two: Increase the print quality mode
If reprinting did not help, try increasing the print quality mode.
In the application you are printing from, click File, and then click Print. Make sure the printer is selected, and then click Properties.
Select the Paper/Quality tab. In the Print Quality area, choose the next higher quality setting. If the current setting is Draft, choose Normal. If the current setting is Normal, choose Best.
Step three: 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.
In the application you are printing from, click File, and then click Print.
Make sure the printer is selected and click Properties.
Click the Color tab, and select Print Grayscale and High Quality.
Step four: Clean the printheads
If the print quality is still bad, clean the printheads.
Make sure the printer is loaded with unused white paper.
Open HP Solution Center.
Click Settings, Print Settings, and then select Printer Toolbox.
Click the Service Tab.
Click Clean Printhead, and then click Clean.
Step five: Align the printheads
If the print quality is still bad, align the printheads.
Make sure the printer is loaded with unused white paper.
Open the printer Toolbox, and select the Printer Services tab.
Click Align Printheads. The Align Printheads window opens. Click Align.
The printer prints an alignment page. The lines in the patterns should appear to be straight. Click OK when the page finishes printing.
Step six: Calibrate the linefeed
If the print quality is still bad, calibrate the linefeed:
Make sure the printer is loaded with unused white paper.
Open the printer Toolbox and select the Printer Services tab.
Click Calibrate Advanced Linefeed. The Advanced Linefeed Calibration window opens. Click OK .
Step seven: Replace one or both printheads
If the print quality is still bad after performing all the above steps, one or both of the printheads will have to be replaced. Print a PQ Diagnostic page to see which printhead should be replaced.
Make sure the printer is loaded with unused white paper.
Press the Setup button.
Press 1 and * simultaneously.
Look at the color blocks labeled Test Pattern 2. Some or all of them could show white horizontal streaks. If none of the blocks are streaked, the printheads are okay.
If the Black block has lines – replace the KY printhead.
If the Cyan block has lines – replace the MC Printhead.
If the Magenta block has lines – replace the MC Printhead.
If the Red block has lines – replace the KY printhead.
If the Green block has lines – replace the KY printhead.

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