by clicking the arrows at the side of the page, or by using the toolbar.
by clicking anywhere on the page.
by dragging the page around when zoomed in.
by clicking anywhere on the page when zoomed in.
web sites or send emails by clicking on hyperlinks.
Email this page to a friend
Search this issue
Index - jump to page or section
Archive - view past issues
FLEXO Magazine : July 2009
DESIGN 4.9 Scaling & Resizing It is best to place images at the desired reproduction size and resolution or larger. If upscaling is required, it should be done in Adobe Photoshop and not in the artwork layout. When upscaling an image, be careful to ensure the image resolution does not fall below the calculated resolution value – typically twice the halftone frequency. 4.10 Color Space Images in a design file (whether captured or created) should remain in their native RGB color space for conversion in prepress to the color space described by the printer profile. Moving the image to any color space other than that of the final printer will result in unnecessary loss of color and detail accuracy. L 52.89 C 61.17 H 26.95 Test Lightness 100 L 51.11 C 64.48 H 28.92 Std 50 0 COLOR DIFFERENCE (CMC 2:1) OF 2.36 4.10: Color Management System: Color Management Systems (CMS) translate from one gamut to another, allowing the proof to more accurately mimic the printing process. 5.0 FILE FORMATS AND USAGE Before using a new version of software, check with all companies downstream that will have to open and work with the electronic file to ensure compatibility. In newer versions, it is possible to save documents in older formats. 5.1 Specified Formats The primary specified formats for vector images are: .ai (Illustrator native), .fh (Freehand native) and .eps. For continuous tone (raster) images the primary specified formats are: .psd (Photoshop native) or .tif. Refer to Design Section 5.2 for delivery of images via PDF. There are numerous types of electronic file formats that can be generated from drawing, photo editing, and page layout programs that should not be used. BMP, PICT and JPEG files generally lack detail due to the way their data is compressed. If other file formats must be used, it is imperative that all parties agree which file formats are to be created, exchanged, and archived throughout the project. The prepress provider is in the best position to describe the advantages and disadvantages of each format for a specific purpose. 5.2 Portable Document Format (PDF) PDF is an imaging file format used to transport graphically rich content. It is commonly used in computer-to-plate and digital proofing technologies. The “creator” of the file (designer, ad agency, prepress provider) must produce a file that meets the minimum imaging requirements of the “receiver” (prepress provider, printer). PDF/X is a PDF file with restrictions intended to facilitate the transfer of files from “creator” to “receiver” as outlined in ISO 15930-1:2001. ISO 15930-1:2001 (Graphic Technology – Prepress Digital Data Exchange – Use of PDF Part 1: Complete exchange using CMYK data PDF/X-1 and PDF Adobe 5.2: Portable Document Format PDF is used to transport graphically rich content. It is typically used in computer-to-plate technologies.
Sustainable Spring 2009