This can be done in one color using a combination of halftones and solids on the same screen. I'd try it first with a 160 screen and 42 lpi halftone at 22.5 degrees.
As many have been discussing recently, more and more of us are finding that halftone dots can be effectively burned on somewhat coarser screens than have been traditionally used in the past. I believe that this is because of tighter screens and better emulsion than that which was used 20-30 years ago when the standards were established. Good coating technique and proper exposure are more important to the quality of a halftone than mesh count.
When I used 230 mesh for halftones, I was never happy with the solid areas of the prints. Often I'd burn two screens for a one color job. One for the halftone and one for the solid graphics. Using 160 mesh makes it easy to print dense solids and crisp halftones with much less effort.
As many have been discussing recently, more and more of us are finding that halftone dots can be effectively burned on somewhat coarser screens than have been traditionally used in the past. I believe that this is because of tighter screens and better emulsion than that which was used 20-30 years ago when the standards were established. Good coating technique and proper exposure are more important to the quality of a halftone than mesh count.
When I used 230 mesh for halftones, I was never happy with the solid areas of the prints. Often I'd burn two screens for a one color job. One for the halftone and one for the solid graphics. Using 160 mesh makes it easy to print dense solids and crisp halftones with much less effort.
