A great number of nozzles equates to fast print speeds. For comparison, if one print head has only 200 nozzles, and another has 600, the print head with only 200 nozzles will have to operate at three times the speed to equal the same ink
dispersal as the 600 nozzle head. Increasing the number of nozzles on a print head is a more efficient way of rapidly supplying a large amount of ink than improving drive head frequency or carriage speed.
High density nozzles on longer print heads
Nozzle density on a print head can be expressed as its pitch. Pitch governs the “dpi” (dots per inch) that a print head is capable of producing in a single pass along the page. When nozzles are widely spaced, the pitch is low and the print head
will need to make a number of passes to achieve a high image quality, whereas when the nozzles are densely packed on the print head – and have a high pitch – fewer passes are required to achieve higher resolution.