Ink can dry inside the nozzle and clog an inkjet cartridge. You can clean away the clog with rubbing alcohol and a cotton swab. Remove the cartridge from your printer. Inspect the cartridge for signs of leaks. A cartridge covered in ink is probably empty, not clogged. If the cartridge is clean on the outside, dip a swab in alcohol. Gently rub the back edge and bottom of the cartridge to loosen the dried ink.
You can't defeat the codes on HP inkjet cartridges
Don't leave ink out of your inkjet printer's "cradles" longer than 30 minutes.
30 minute
There are several popular inkjet toner cartridges. Some of the most popular inkjet toner cartridges include HP, Dell and Brother, which can be bought at almost all computer stores.
There are many companies online which sell discount cartridges. 123inkjets.com/ is a company I used before. Amazon.com has good deals for inkjet cartridges also.
To prevent the Inkjet nozzle from drying out.
There are no HP inkjet cartridges that are compatible with other brands of printers. Ink cartridges are shaped differently for different brands, and HP cartridges will only fit in HP printers.
Inkjet printer cartridges use liquid ink and are ideal for high-quality photo and color printing, while laser printer cartridges use powdered toner and are better for fast, high-volume text printing. Inkjet cartridges are usually cheaper upfront but may need more frequent replacement, whereas laser cartridges last longer and are more cost-effective over time.
HP inkjet cartridges are easier to find than other brands because the printers are more ubiquitous than other printer brands. As such, most retailers will carry a large selection of inkjet cartridges.
There are many online stores that offer special deals on inkjet cartridges. You could try the following websites; printerinks.com, cartridgesave.co.uk or cartridgeworld.co.uk.
Most ink cartridges cost about 20-30 dollars.
There are many places you can dispose of your hp inkjet cartridges. Many office supply stores have deposit boxes for ink cartridges. You ca also take these cartridges to local recycling groups who will usually take them at no cost.