Color inkjet printers in the purchase should be considered from the following aspects: 1, printing speed printing speed may not be very important for families, photo enthusiasts, but it is very important for the business users who race against the clock, they have both quality and speed requirements for inkjet printers, if you are sensitive to the printing speed, then you need to pay attention to it in the purchase Pay more attention to the ppm of the product, which is an important standard to measure the printing speed. 2. Ink drop and print resolution: the print effect of an inkjet printer is related to the print resolution, which determines the fineness of the printer’s output. But it is not the only standard to judge the quality of printing. To a certain extent, the ink drop control technology of printer can affect the printing resolution, so the problem of ink drop diffusion cannot be ignored. So many manufacturers start from the technology and control the ink drop at the source. Now the ink drop of inkjet printer is controlled between 1-3 μ L. 3. Printing cost: from an objective point of view, integrating three colors into one ink cartridge will do more harm than good. Because for these all-in-one ink cartridges, once a certain color is used up, we are forced to replace the whole ink cartridge, which is a waste and expensive. In order to save the cost, we can consider installing continuous ink supply system on the inkjet printer, which greatly reduces the printing cost. 4. Color expressiveness: the print resolution and ink drop control of inkjet printer determine the clarity of photo printing. For users, multi-color printing is still the best solution to achieve color expression, which is more effective than any optimization technology. For photo printing, the basic requirement is to have six color printing. Some brands of printers can do seven color and eight color printing, even to the present nine color and twelve color printing. In order to achieve better color transition of photo output, major ink-jet printer manufacturers use multi-color ink cartridge. Although the general ink-jet printer’s three color ink cartridge can be combined into any color, but in fact its effect is far from six color ink cartridge.