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My hp photosmart C4780 prints out fuzzy - almost like a shadow - from my mac. it was working fine until i changed the cartridge. it doesn't do this when scanning, or copying directly on the machine

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6ya6ya
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Posted on Jan 02, 2017

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efs_perpends
  • 1996 Answers

SOURCE: HP Photosmart C3100 series, Can not copy or scan.

Did you just replace a cartridge? In any event, see this HP support article and follow the instructions. You may need to clean the cartridge and printer contacts for the cartridge to work correctly. Do this while the printer is turned off. Wait until the contacts are both thoroughly dry, then reinstall the cartridges with the printer on. (See here.)
If you have other questions about this model, your product home support page is here.

I hope this information allows you to resolve this issue. If you need further assistance, please post back with a comment to this thread.
If I've managed to answer your question or solve a problem, please take just a moment to rate this post....thanks!

Posted on Sep 05, 2009

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JohnGJohn
  • 215 Answers

SOURCE: How to connect wireless HP Photosmart C4780

here is a general steps to connect a printer to a wireless network

http://www.castleink.com/_a-wireless-printer-setup.html


Hope this helps
Thank you

Posted on Oct 02, 2009

Testimonial: "Very helpful. Although I haven't yet purchased the HP Photosmart C4780, I wanted to research how it might be connected to my wireless home system."

siawolf
  • 749 Answers

SOURCE: I want to know how to scan a document from a HP Photosmart C4780

here is the complete HP documents and instruction for scanning with the c 4780 printer : http://h10025.www1.hp.com/ewfrf/wc/documentSubCategory?tmp_rule=41996&tmp_task=useCategory&lc=en&dlc=en&cc=us&product=3794615&os=228&lang=en

Posted on Apr 02, 2010

  • 1 Answer

SOURCE: my hp photosmart C4780 printer

While the print function will still work, the copy function won't work if ink is low.

Posted on Oct 04, 2010

Testimonial: "OK Tks for the hint..it was one of the alternatives"

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1 Answer

Can't scan pictures from my HP F4280 to my Mac.


Seems like you have installed only printer driver. Download the scanner driver for device seperately and install the scanner software also. And try again.

Nov 11, 2013 | Cisco Photosmart C4780 Wireless AllInOne...

1 Answer

NVM reset for hp photosmart c4780


You can gain access to the service menu...refer to Cartridge Error Clear bypass procedure below (as guidance of how to get in):

For any severe cartridge error related message, on the HP C4600, C4700 or D110a printer models, I suggest you run the internal Tap 41 diagnostics test which will tell you the electrical health of the ink cartridge - in many cases the cartridge is internally electrically damaged and will need to be replaced. In addition, you can temporarily bypass an 'incompatible cartridge(s) or Missing/Not Detected error message by performing the Cartridge Error Bypass procedure...refer to two Youtube videos on how to do this:

HP Photosmart C4600 & C4700 Printers - Tap 41 Diagnostic Test: http://www.youtube.com/watch?v=ghxjLCn07Jo


HP Photosmart C4600 C4700 D110a Printers - HP 60 Cartridge Error Bypass: http://www.youtube.com/watch?v=rNVJmKPlLsg


Low Ink Warning and Other (i.e Incompatible Cartridge) Errors, HP 60 & HP 61 Ink Cartridges:

http://www.youtube.com/watch?v=5_suW3U6e08


Feb 28, 2013 | Cisco Photosmart C4780 Wireless AllInOne...

1 Answer

HP Photosmart C4780 and Acer Aspire fight over web-based printing!


Try hard-wiring your laptop to the router with an ethernet cable as a test and then try printing, if you do not loose connection to the internet then the problem is probably that the printing is hogging your wireless bandwidth.
If the same thing happens with loosing connection to the internet try connecting to the internet real quick through another computer that is hardwired, you want to find out if the problem is a wireless one or that affects wired computers also. You might need a driver upgrade, you also might need to upgrade the firmware of the router

Jan 22, 2013 | Cisco Photosmart C4780 Wireless AllInOne...

1 Answer

Incompatabe ink cartridge?


Yes it could be the problem. Try and get a different print cartridge and if it doesn't work you may just have to get a new printer.

Apr 30, 2012 | Cisco Photosmart C4780 Wireless AllInOne...

1 Answer

My hp photosmart c4780 won't align because is keeps saying that the alignment plot in the scanner is skewed


If you have had paper jam and not replaced the rear paper grey plastic retainer correctly or somehow it has become loosened the paper will twist on entry and the printing will be askew. Sometimes not loading paper. It will then also not align when replacing cartridge. Had this problem, took out the retainer that has two plastic points that should locate in the retaining holes and pushed it back. Paper jam, printouts and alignment was then fine. Took me months to figure out as it was printing, just not very straight

Jan 24, 2012 | Office Equipment & Supplies

1 Answer

I've got a HP C4780 printer which I have had for around a year but only used about 5 or 6 times! Despite the ink cartridges having ink in them, the black cartridge is not printing at all. Not even a...


The ink solidifies right behind the micro printing nozzles. The only way to attempt to rectify this is to dip the print face into some warm (not hot) water for a minute or two, and dry after wards. If the cartridge recovers, Yippee, if it doesn't, replace.
Common problem. Be thankful it isn't a Canon or Epson, which entails replacing a seriously expensive 'print head'.

Jun 08, 2011 | HP PS C4780 All in One InkJet Printer

1 Answer

I have a HP C4780 printer - does the 300XL cartridge work on this model


Hi,

The HP Photosmart C4780 All-in-One does not use HP 300XL Cartridge.

Below are the cartridges used by your printer with the no. of page count and their price as per HP

HP 60 Black 200 pages $14.99 HP 60 Black/Tricolor 200 black, 165 color $31.99 HP 60 Tricolor 165 pages $19.99 HP 60XL Black 600 pages $34.99 HP 60XL Tricolor 440 pages $40.99

* Please rate this solution with Thumbs up and Testimony to help us improve providing support

Jan 04, 2011 | Office Equipment & Supplies

2 Answers

Hp Photosmart C4780 won't recognize new ink cartridges


Switch off the printer and switch on again,Unclip the cartridges one by one and clip back in again this sometimes cleans out the connector pins.This has happened to me.

Sep 02, 2010 | Cisco Photosmart C4780 Wireless AllInOne...

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