Abstract: A temperature control device for a gaseous media. The temperature control device includes a first heat exchanger layer in which a medium channel for a gas to be temperature-controlled is formed, a second heat exchanger layer which extracts heat from and/or supplies heat to the first heat exchanger layer, and a diffusion layer which is arranged between the first heat exchanger layer and the second heat exchanger layer. The diffusion layer is open to the gas to be temperature-controlled.

Abstract: An AM half-tone screening process having special utility with a flexographic printing process is described. Such printing processes typically include a desktop publishing unit, a raster image processor for forming half-tone separations, and an image sitter for producing the half-tone separations. In accordance with the invention, the image area is divided into a multiplicity of groups of equally spaced dots. The combined value of the dots in a single group is set at a desired target film value but the individual dots vary in size for film values below a selected transition level. The minimum value of one of the dots can be determined by the operator of the system and, for example, may be greater than the size of the anilox cells in the printing process so that emersion of the raised area into the cell is not possible. The remaining dots of the group decrease in size in proportion to the target film value at a faster rate than the first dot.