When you search for an inkjet rinter, take note of the cartridges in use. Take note of the cost, availability and lifespan of the cartridges, as the cost of consumables can differ between printer models. It is very important to compare resolutions between printers. If a printer has a resolution of 1,440 x 720 dpi such as the newer models in the Epson line, that means that on the verticle the printer can place 1,440 dots per inch on the paper, and 720 dots per inch on the horizontal. The wide range of colors are produced by placing dots of the individual ink colors in proximity to one another so they blend and appear to the eye as a color such as peach or green or lavender.
Most printers also perform differently based on the type of paper used.
Youcan use lower resolutions with standard papers, and get better results with special inkjet papers at the same resolution and also take full advantage of the higher resolution settings when using the special papers intended for that. Inkjet printers get the ink on the paper in different ways. Some use a thermal technology where the inks are heated, sprayed on the page and then cool and harden and adhere. Others use a piezoelectric process which quickly delivers ink through mechanical vibrations. Most companies use a combination of proprietary hardware in their printers, and the details aren't the general user's concern, anyway.