You should be able to find this out in your printer's instruction manual. If it is not listed there or you can't find the manual, try asking an associate at a store like Staples and they should be able to look it up for you.
The label on the printer cartridge should say laser or inkjet on it. If this doesn't work go to the manufacturers website and they should be able to help.
You can find out what ink cartridges your dell printer uses by opening up the printer and checking to see what cartridges are already installed on the printer.
Printer cartridges are what holds the ink. You insert these into the specific place in the printer, and the printer uses the ink from inside the cartridges.
Two or four
The HP C3909X printer uses any brand of ink cartridges that will fit inside of it. Just ask a worker at a store, and tell the worker the make and model of your printer, and the worker should be able to help you find a good replacement cartridge for your printer.
The best place to find this information is the HP website. If you search for your printer model number you will find the relevant information. HP usually use a three digit code for their replacement cartridges which you can use when purchasing from a third party supplier.
Two or Four
Usually known as an "inkjet" printer that uses blue, red and yellow ink cartridges, with some printers using an additional black ink cartridge.
go buy RGB cartridges
Hp3050a
Generally speaking, if you can get by with an inkjet printer, buy one which uses ink cartriges that are refills. These are the lowest cost ink cartridges.
Any kind of Canon printer will work for you if it is CL-511. There is also KX-FL511 for Panasonic printers. It all depends on the type of cartridge it is.
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