Why do you want to do this?
Typically, with offset presses, halftones are applied by the imagesetter at the plate-making stage, not in the originating computer. With digital printers, there is sometimes a traditional halftone, but more often, a stochastic pattern. The halftone or stochastic pattern is needed specifically by each individual press, but is not needed in the originating image file. However, once you convert your image to CMYK, you can, of course, print individual channels (C,M,Y,K) without the halftone pattern, but with the native print-pattern of your specific printer. When printing to the mp970, which is an inkjet printer, you will get best color results if you send it RGB, not CMYK.