Higher-end inkjet printers can offer 5, 6 or 7 ink colours giving 32, 64 or 128 possible tones per dot location (and again, it can be that not all combinations will produce a unique result).
At each dot position, the simplest type of color printer can either print no dot, or print a dot consisting of a fixed volume of ink in each of four color channels (typically CMYK with cyan, magenta, yellow and black ink) or 2 4 = 16 colours on laser, wax and most inkjet printers, of which only 14 or 15 (or as few as 8 or 9) may be actually discernible depending on the strength of the black component, the strategy used for overlaying and combining it with the other colours, and whether it is in "color" mode. This is due to the limited range of colours for each dot typically available on a printer. The DPI measurement of a printer often needs to be considerably higher than the pixels per inch (PPI) measurement of a video display in order to produce similar-quality output. A laser printer applies toner through a controlled electrostatic charge, and may be in the range of 600 to 2,400 DPI. An inkjet printer sprays ink through tiny nozzles, and is typically capable of 300–720 DPI. A dot matrix printer, for example, applies ink via tiny rods striking an ink ribbon, and has a relatively low resolution, typically in the range of 60 to 90 DPI (420 to 280 μm). The range of DPI supported by a printer is most dependent on the print head technology it uses.
#Where to change dpi on word for mac driver
A printer does not necessarily have a single DPI measurement it is dependent on print mode, which is usually influenced by driver settings. Up to a point, printers with higher DPI produce clearer and more detailed output. This is caused by the spreading of ink on the surface of the media.
#Where to change dpi on word for mac windows
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