The Acrobat Overprint Preview setting is an invaluable tool because it simulates what will happen in print to the artwork you are viewing. This means that the Cyan, Magenta and Yellow plates are printed first, and then the Black plate is "overprinted" on top, allowing other inks to show through. As you can see, the image shows through the black block because the default Quark setting for black is 'overprint'. ![]() Turn the Acrobat Overprint Preview setting on, and you'll see the simulated print result (above right). (This setting can be found under Advanced/Overprint Preview.) If you do the same and open the PDF file in Acrobat (I used version 6 for this example), the artwork (above left) will look normal and as expected when "Overprint Preview" is turned off. The image behind ended halfway up the page. I placed a CMYK image in the background, and then placed a 100% black box over the top of the image. The above example shows an A4 document created in Quark XPress 6. These allow you to spot potential over printing problems before they become expensive! Here I'll simulate a few common over printing problems and explain how to avoid them. The overprint settings need to be set correctly before going to press, which is why modern page layout programs such as InDesign and pre-press programs like Acrobat have built-in PDF Overprint Preview options. Have you ever sent artwork to press that looks perfect on-screen, but dreadful in print? For example, when areas of solid black allow images behind to show through? This happened to me a couple of times before I got to the bottom of the problem. See creating accessible links in PDFs for how to do so.Over Printing Problems in Quark and InDesign - and How to Solve Them What do Over Printing Problems Look Like? This bug has been reported to Adobe, but until it is fixed, if you need to create accessible PDFs, you might want to consider sticking with InDesign version 14 (InDesign 2019).Īlternatively, any PDFs that have been created using InDesign 2020 can be rebuilt using Acrobat Pro. And there are, of course, many other instances in which you would gain nothing by adding text to this field. But imagine, for example, having to replace every item in a table of contents with a copy of itself-a lot of extra work for no benefit at all. As things currently stand, all links must have some content entered into this box if they are to be screen reader accessible. ![]() This would be fine if its use were optional, but it’s not. Clicking on the new Accessibility button opens athn Alt Text field in which you can overwrite a URL with a more human-friendly text alternative for screen reader consumption. ![]() The problem lies with the new Accessibility panel in the Edit Hyperlink dialogue box. Such links will work with a mouse, but will not work at all with screen readers (tested with NVDA and several versions of JAWS, including JAWS 2020). There is currently a problem in the latest version of InDesign (version 15.0.1) which means that, out of the box, any hyperlinks that you create will not be screen reader accessible when you export to PDF. Use of the new Accessibility button in the hyperlinks panel is now optional, and as such is a very useful new feature. ![]() UPDATE (2 March 2020): The problem referred to in the article below has been fixed in the latest InDesign update (version 15.02).
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