Measuring Ink Jet Print Resolution


As one of the key measures for ink jet print quality, it is important to understand how print resolution helps define the quality of the output in terms of dpi, effective dpi and greyscale. Over the past few years, digital ink jet has continued to push the boundaries of innovation with a steady stream of technological advances that has given ink jet in many cases better levels of performance, cost effectiveness and efficiency than other digital technologies. As a result, high speed piezo drop on demand ink jet has become the most significant front-runner in the digital print sector in recent years, with several companies launching digital ink jet presses offering highly efficient, high quality output.

Fundamentally, the basis of the print quality and productivity achieved from these new ink jet printers is largely determined by the type of print head that is integrated within the press and with that has emerged a new language to help define the quality of output. Typically, the most common methods of defining output
quality relies on dots per inch (dpi), effective dpi and greyscale.

Dots Per Inch (DPI)

Print resolution, although not the only measure, remains one of the key methods of measuring print quality. For those more familiar with flexographic technology, this is commonly quoted in the form of lines per inch. In contrast, with ink jet technology, whether you are measuring print resolution for desktop devices or full scale commercial UV-curable presses, it tends to be quoted in Dots Per Inch or dpi. 

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