Adobe 22020737 Acrobat X Pro Manual - Page 416

USING ACROBAT X PRO 410 Printing compensate for the black added by the black generation. Because it uses less ink, UCR is used for newsprint and uncoated stock. Emit Halftones Allows you to emit the embedded halftones instead of using the halftones in the output device. Halftone information controls how much ink is deposited at a specific location on the paper. Varying the dot size and density creates the illusion of variations of gray or continuous color. For a CMYK image, four halftone screens are used: one for each ink used in the printing process. Emit Transfer Functions Emits embedded transfer functions. Transfer functions are traditionally used to compensate for dot gain or dot loss that occurs when an image is transferred to film. Dot gain occurs when the ink dots that make up a printed image are larger (for example, due to spreading on paper) than in the halftone screen. Dot loss occurs when the dots print smaller. With this option, the transfer functions are applied to the file when the file is output. Emit Flatness allows you to use the flatness value of the PDF if the PDF already has flatness settings. If the PDF doesn't have any flatness settings, Acrobat controls it for the PostScript printing. The flatness value sets the limit for how much Acrobat can approximate a curve. Emit PS Form Objects Emits PostScript form objects for Form XObjects within the PDF. Selecting this option reduces the overall size of the print job, but it could increase the printer memory that is used. A form XObject is a container of graphics objects (including path objects, text objects, and sampled images) within the PDF. Form XObjects create a single description for complex objects that can appear many times in a single document, such as background images or company logos. Discolored Background Correction Prevents printing problems like red boxes over graphics, or pages printing mirrored or upside down. These problems can occur when Acrobat or Reader cannot use the default Color Rendering Dictionaries (CRDs) on some PostScript printers. Always Use Host Collation Specifies if you want Acrobat to always use host collation for printing without checking the printer driver. Acrobat uses printer collation by default. Printer collation sends the print jobs separately to the printer and allows the printer to figure out how to collate the pages. For example if you send out two copies of a two page job, the printer receives two jobs of two pages. Host collation figures out how to collate the pages in Acrobat and then sends that job to the printer. For example if you send out two copies of a two page job, the printer receives a single rearranged job of four pages. Print As Image Prints pages as bitmap images. Select this option if normal printing doesn't produce the desired results, and specify a resolution. This option is available only for PostScript printers. Downloading Asian fonts to a printer Select the Download Asian Fonts option in the Advanced Print Setup dialog box if you want to print a PDF with Asian fonts that aren't installed on the printer or embedded in the document. Embedded fonts are downloaded whether or not this option is selected. You can use this option with a PostScript Level 2 or higher printer. To make Asian fonts available for downloading to a printer, be sure you have downloaded the fonts to your computer using the Custom or Complete installation option during installation of Acrobat. If Download Asian Fonts is not selected, the PDF prints correctly only if the referenced fonts are installed on the printer. If the printer has similar fonts, the printer substitutes those. If there are no suitable fonts on the printer, Courier is used for the text. If Download Asian Fonts does not produce the results you want, print the PDF as a bitmap image. Printing a document as an image may take longer than using a substituted printer font. 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. Last updated 10/11/2011