Adobe 22020807 User Guide - Page 428

USING ACROBAT 9 PRO 422 Printing Note: Some fonts cannot be downloaded to a printer, either because the font is a bitmap or because font embedding is restricted in that document. In these cases, a substitute font is used for printing, and the printed output may not match the screen display. Output options Use the Output panel of the Advanced Print Setup dialog box to set output options. Color Presents composite and separations options. Other options become available in the Output panel depending on your selection in this menu. For more information about color composite and separations, see "Printing color" on page 426. Transparency Flattener Preset Flattens transparent objects according to the preset you choose. Simulate Overprinting Simulates the effects of overprinting spot inks in composite output and converts spot colors to process colors for printing; the document itself is unchanged. This option is useful for printing devices that don't support overprinting and is available only if you choose Composite from the Color menu. If you intend to use a file for separations on a RIP (raster image processor) or for final output, don't select this option. Important: When printing to a printer that supports overprinting, make sure that this option is unselected, so the native overprinting capabilities of the printer are used. Use Maximum Available JPEG2000 Image Resolution Controls how resolution progression information, if present, is used when generating PostScript. When selected, the maximum resolution data contained in the image is used. When unselected, the resolution data is consistent with the resolution settings on the Transparency Flattening panel. Ink Manager Modifies the way inks are treated while the current PDF is open. More Help topics "Ink Manager overview" on page 446 About halftone screen frequency In commercial printing, continuous tone is simulated by dots (called halftone dots) printed in rows (called lines or line screens). Lines are printed at different angles to make the rows less noticeable. The Screening menu in the Output section of the Print dialog box displays the recommended sets of line screens in lines per inch (lpi), and resolution in dots per inch (dpi), based on the currently selected PPD. As you select inks in the ink list, the values in the Frequency and Angle boxes change, showing you the halftone screen frequency and angle for that ink. A high line-screen ruling (for example, 150 lpi) spaces the dots closely together to create a finely rendered image on the press; a low line-screen ruling (60 lpi to 85 lpi) spaces the dots farther apart to create a coarser image. The size of the dots is also determined by the line screen. A high line-screen ruling uses small dots; a low line-screen ruling uses large dots. The most important factor in choosing a line-screen ruling is the type of printing press your job will use. Ask your service provider how fine a line screen its press can hold, and make your choices accordingly. Last updated 9/30/2011