AM Screening is the standardized Screening method in Lithography where the RIP plays a crucial role in converting continuous-tone images into a consistent dot pattern. The RIP processes the file based on the predetermined screen frequency (LPI) and angle, ensuring the halftone dot size is accurately modulated to represent the intended tonal values. This precise data is then sent to the CTP device, which uses high resolution to image the variable-sized dots onto the plate.
The stability of this technique simplifies production planning and is highly compatible with existing printing presses, making it cost-effective for commercial work. However, achieving fine detail requires ensuring the CTP device's DPI is sufficient to form the smallest microdots necessary for a high-quality halftone cell. AM Screening relies on the predictability of the dot grid, requiring strict angle control to prevent Moire patterns, unlike FM Screening.