Adobe 65023809 Printing Guide - Page 119
Cropping s, through the Show Import Options options Art, Trim, Bleed, or Media. If you select
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Add Printer Marks Acrobat can add standard trim and bleed marks to the chosen page range as well as color bars and page information. You can also choose to place marks on a separate layer. Note: An InDesign CS4 PDF file can include printer marks either in a separate layer or on the page, but Acrobat detects them only on a separate layer. If they were exported as a layer, they are replaced by any printer marks you create using the Acrobat Add Printer Marks feature. If the InDesign printer marks are on the page, Acrobat printer marks overlay them and might not align with them. Cropping pages Use the Crop Pages dialog box to define boundaries for trim, bleed, and art for your document. The Crop feature provides several functions: • Show All Boxes: Previews properties of CropBox, ArtBox, TrimBox, and BleedBox in a thumbnail; deselect this option and choose a single box to display, using the popup menu below the Show All Boxes option. The dialog box previews each selected property as a differently colored box with its dimensions at the bottom. (To see these indicators all the time, you can turn them on in Preferences > Page Display.) • Units: Lets you set the unit of measurement-points, picas, millimeters, centimeters, and inches-for the page dimensions of each box in the thumbnail preview. • Margin Controls: Lets you crop the page (or range of pages) to specified dimensions by entering desired proportions. Note that this a masking procedure-information outside the new margin dimensions is not discarded. Consequently, the file size is not reduced. In addition, it's possible for some applications and prepress processes to ignore the margin settings. For example, when placed in InDesign, a PDF that uses margin controls to reduce the dimensions of the visible area can be "de-cropped" through the Show Import Options options (Art, Trim, Bleed, or Media). If you select the Crop option in the Show Import Options dialog box when placing a cropped PDF in InDesign, the margin settings are honored. • Change Page Size: Enables you to extend the dimensions of the pages in the PDF. This is much like the Canvas function in Adobe Photoshop CS4-think of it as the opposite of cropping. You can only increase the page dimensions, however; you can't reduce the dimensions. Adobe Creative Suite 4 Printing Guide 117