Q1 : How Inkjet Printers Work?
Please read following article: inkjet printers
Q2 : What is Color Gamut?
In color reproduction, including computer graphics and photography, the gamut, or color gamut (pronounced /ˈɡæmət/), is a certain complete subset of colors. The most common usage refers to the subset of colors which can be accurately represented in a given circumstance, such as within a given color space or by a certain output device. Another sense, less frequently used but not less correct, refers to the complete set of colors found within an image at a given time. In this context, digitizing a photograph, converting a digitized image to a different color space, or outputting it to a given medium using a certain output device generally alters its gamut, in the sense that some of the colors in the original are lost in the process.
read more about
Color Gamut on WIKI.
and on YouTube:
Color Theory, Color and Gamut
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