US Patent 9056485 Color medical imaging on film

A method of printing a high density image. An image is accessed, wherein the image has a plurality of pixels, and each pixel has an r,g,b value. For each pixel, each r,g,b value is separated into separate grayscale components and color components. A lookup table is applied to each grayscale and color component to generate an ink value for each of the print heads. The ink values are combined to produce a final ink output value for each pixel, and the final ink output values are employed for printing on medium using an ink-jet printer.