Konica Minolta bizhub PRESS 1250 IC-309m User Guide - Page 129

Quality tab in the job parameters window 121 Parameter Overprint Resolution Screening Option Image compression quality Description Enables you to control the quality of JPEG images in your job. Provides the following options: ● Normal ● High Improve text/ line in Image Significantly improves the text and line quality in your job. In some cases, images in the PDL file contain data that belong to the text and graphics layer, such as screen captures and high resolution rasterized text. The IC-309m print controller is able to identify such images and convert them into text and graphics. Select from the following options: ● Auto ● On ● Off Smooth gradient Transparency flattening quality Black overprint PostScript overprint Resolution Screening Method Blends artificial (or synthetic) vignettes and gradients in natural images. Improves the quality of transparencies that are flattened in PDF files. Ensures that black text prints cleanly within a tint or picture area. The text appears in a richer, deeper black, with the underlying CMY values equal to those of the printed background. Uses the overprint information that exists in the PostScript file. This option also determines whether the DTP application's PostScript overprint settings are retained in the RIP. Enables you to set the resolution for the job when printed. Select either 600 dpi (fine) or 1200 dpi (very fine). Converts images, graphics and text into information that can be printed (halftone dots). The human eye "smooths out" this information, which seems visually consistent with the original picture. Thus, the more lines per inch, the more natural the image appears. Screening is achieved by printing dots in numerous shapes or lines in an evenly spaced pattern. The distance between the screen dots or lines determines the quality of the image. Printers can work with constant amounts of toner and still produce a wide range of colors when you use screening. The darker the color, the larger the dot. To print an image on a digital printer or press, the Creo server needs to digitally approximate the grayscale values with different distributions of pixels. This process is commonly referred to as halftoning. Digital halftoning begins by sampling the original image at the same number of dots per inch as the printer and constructing digital halftone cells.