How do I remove and replace the ink catridge ?

Http://h10025.www1.hp.com/ewfrf/wc/document?docname=c01429130&cc=us&lc=en&dlc=en&product=3645100&tmp_track_link=ot_search

Please follow this link and well you would have your ink cartridges replaced without a problem.

Otherwise this is what you do

Step one: Remove the old cartridge

1. Press the Power button ( ) to turn on the HP product.
2. Open the front access door. The carriage moves to the far right side of the HP product. CAUTION: If the HP product is off when the front access door is opened, the HP product will not release the cartridges. Figure 1: Open the front access door
3. Wait until the carriage is idle and silent, and then lightly press down on a cartridge to release it.
   • To replace the tri-color cartridge, remove the cartridge from the slot on the left.
   • To replace the black cartridge, remove the cartridge from the slot on the right. Figure 2: Remove the black cartridge
4. Pull the cartridge toward you and out of its slot.

Step two: Prepare the new cartridge Use the following steps to prepare the new cartridge for use in the HP product. Which cartridges you use depends on your country or region. To check the cartridge compatibility for your product, right-click this link, HP SureSupply , and then click Open in New Window . If your language or country does not display nextHow do I remove and - c01906983.gif icon ( ) select your language and location.

1. Remove the new cartridge from its packaging. Be careful to touch only the black plastic.
2. Use the pink pull tab to remove the plastic tapeHow do I remove and - c01367670.jpgFigure 3: Remove the tape 1 - Copper-colored contacts 2 - Plastic tape with pink pull tab (must be removed before installing) 3 - Ink nozzles under tape CAUTION: Do not touch the copper-colored contacts or the ink nozzles. Touching these parts can result in clogs, ink failure, and bad electrical connectHow do I remove and - c00442147.gifure 4: Do not touch the contacts or ink nozzles

Step three: Replace the old cartridge Use the following steps to replace the old cartridge.

1. Hold the new cartridge with the HP logo on top, and then slide the cartridge at a slight upward angle into the empty cartridge slot. Push the cartridge in firmly until it snaps into place.
   • To install a tri-color cartridge, insert it into the left slot.
   • To install a black How do I remove and - c01429213.gifsert it into the right slot. Figure 5: Insert the black cartridge
2. Close the front access door.
3. An alignment page prints. You do not need to do anything with this page yet. Continue to the next step.

Step four: Place the unused cartridge in a cartridge protector If you are temporarily removing a working cartridge (for instance, removing a black cartridge in order to install a photo cartridge), put the cartridge that you are not using in a cartridge protector. NOTE: Cartridge protectors come only with photo cartridges. If a cartridge protector is unavailable, store the unused cartridge in a rigid, airtight container (not a plastic bag). If unprotected, the cartridge can dry out and become unsuitable for use. Step five: Align the new cartridge The HP product prints a cartridge alignment sheet when you install new cartridges.

1. When prompted, load unused, plain white, U.S. letter or A4 sized paper into the input tray, and then press OK on the HP product control panel.
2. Lift the scanner lid.
3. Place the alignment sheet on the scanner glass so that the top of the sheet is on the right side with the text facing down. Make sure that the sheet is aligned with the right front corner of the scanner glass. Figure 6: Place the alignment sheet on the scanner glass
4. Close the scanner lid, and then press OK on the HP product control panel. The HP product aligns the cartridges.

Please check the link and you will see on how to replace ink cartridge of HP J4580 Officejet:

http://h10025.www1.hp.com/ewfrf/wc/document?docname=c01429130&lc=en&dlc=en&cc=us&product=3645100

Thank you and good luck!