Question about HP Officejet Pro L7780 All-In-One InkJet Printer

1 Answer

Problem with printout on hp7780

When i print a page on the 7780 the black color doesn't print completely, it skips between lines. can this be a printhead problem.

Posted by on

1 Answer

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points

    All-Star:

    An expert that got 10 achievements.

    MVP:

    An expert that got 5 achievements.

    Vice President:

    An expert whose answer got voted for 100 times.

  • Master
  • 822 Answers

Clean your black cardriges and calibrate.

Posted on May 24, 2009

1 Suggested Answer

6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

Hi,
a 6ya expert can help you resolve that issue over the phone in a minute or two.
best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
goodluck!

Posted on Jan 02, 2017

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

1 Answer

Black ink is skipping lines


Take out cartridge put in a sandwich baggie and shake it; then re-install

Sep 25, 2014 | Canon PIXMA MP610 InkJet Printer

1 Answer

Hi. I replaced the black cartridge (yellow almost empty) but if I print a page (only black, the printer skip some lines. Can you please assist me? Surene Whiteman


Printer contain 4 cartridges and 2 printeads. Because the black color skip some lines as you mentioned you need to replace a new printead(not the cartridge) No:88 Black/Yellow color one. For more information visit the following link: http://h10025.www1.hp.com/ewfrf/wc/document?lc=en&dlc=&cc=us&docname=c00841890&product=2512009

Jan 24, 2013 | HP Officejet Pro L7680 All-In-One 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

No black when printing color


Dear Sir,

You are getting black lines in green color,and apperence of parallel light and dark lines because your colour catridge is almost empty.So solution is replace the catridge and take a printout. There is no proplem with a printer. i think it solves your problem.


good luck

chandrashekhar

Jul 29, 2009 | HP OfficeJet 4255 All-In-One InkJet...

1 Answer

Black ink problem with printout on hp7780


Always try replacing the ink cartridges first.

It sounds like the print heads in the 7780 are bad. Don't confuse the ink cartridges with print heads. The cartridges fit inside the print heads. You will need to change the heads. Here is a link to HP's how-to.
http://h10025.www1.hp.com/ewfrf/wc/document?docname=c00841890&tmp_track_link=ot_faqs/top_issues/en_us/c00841890/loc:1&lc=en&dlc=en&cc=us&lang=en&product=2512010

Could have the same problem with the Dell.

Jun 01, 2009 | HP Officejet Pro L7780 All-In-One InkJet...

1 Answer

When I change the black ink cartridge, the alignment page and instruction page are printing out fine. When I place the alignment page on the glass as instructed and press 'ENTER', the printer gives a...


I just had the same issue (align page not detected).

We had just re-installed the empty color cartridge back into the printer (long story but basically we knew we could only print B/W).

The align page printout had a lot of empty spaces around the black lines. This is apparently where the color lines are supposed to print.

Without those color lines, the printer would not detect the align page as color is part of the alignment being done.

Since we only wanted black printouts, I pressed 'cancel' to stop the alignment process, and now we just hit the Black copy button and ignore the alignment prompt on the printer window.

The HP site (enter psc750 in product window) has some helpful ideas as to what the problem might also be. It could be the shipping tape is still on the new cartridge (and preventing the black or color from printing on the align sheets) etc.

Mar 20, 2009 | HP PSC 750 All-In-One InkJet Printer

2 Answers

HP 2600N PRINTS A BLACK LINE VERTICALLY ACROSS THE PAGE (FROM TOP TO BOTTOM) RIGHT IN THE MIDDLE EVERYTIME YOU PRINT SOMETHING . WHAT COULD THIS BE? I HAVE CLEANED EVERY DRUM, THE FILM ETC AND IT KEEPS...


You either have a defective black toner, a bad fuser or transfer belt. From my experence it is usually a bad toner cartridge. After you print a couple of pages, pull the black toner and see if there is anything on the drum. If there is try shaking the toner, sometimes toner does like dirt and clogs up. If you still have problem you will have to try another toner. I know that is not cheep, but I don't know any other way.

Mar 02, 2009 | HP Color LaserJet 2600n Printer

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.

Nov 25, 2008 | HP Officejet Pro L7780 All-In-One InkJet...

1 Answer

Epson Printer - Skipping When Printing Black


If you try the print head alignment or head cleaning wizard under the maintenance tab, they may help!

Dec 18, 2007 | Epson Stylus CX3810 All-In-One InkJet...

1 Answer

Empty ms word printout


Hi, You can try: 1. go to Start, Printer and Faxes, right click on your 3745, click on Properties, Printing Preference; 2. Check to see if you have any Advanced tab or button; 3. Check if you can set the printer to text only; 4. Check if you can set the printer to use black ink only. 5. In MS Word, verify through the use of Print Preview that your document is as you would want to be printed; 6. In some instances you may have to set manually text color in MS Word. While your document is open, click Ctrl + A to select all, then choose font color to "Black". Alternately, in your MS Word, you can click on "Format", "Font", "Font Color" set to "Black" rather than "Automatic" and set this as the "Default" setting. Hope this be of some help/idea. Post back how things turned up or should you need further information. Good luck and kind regards.

Sep 29, 2007 | HP DeskJet 3740 InkJet Printer

Not finding what you are looking for?
HP Officejet Pro L7780 All-In-One InkJet Printer Logo

243 people viewed this question

Ask a Question

Usually answered in minutes!

Top HP Office Equipment & Supplies Experts

Doctor PC
Doctor PC

Level 3 Expert

7733 Answers

Seeker5211
Seeker5211

Level 3 Expert

1089 Answers

kakima

Level 3 Expert

102366 Answers

Are you a HP Office Equipment and Supply Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...