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Preparing Line Screen for Newsprint-HELP
Here’s a mystery I’m hoping there is a simple answer to…I am helping out a colleague who is switching to Indesign from Ready Set Go (and going from paste up to digital – really). Its a newsprint weekly with submitted ads and created text and display ads. One thing I can’t seem to get a concrete answer on is how to change image control of line screens in images.
In Ready Set Go they were able to open submitted pdf ads, select and copy an individual image, and set the line screen of the image to 85. In this way the images were prepped for the proper line screen but the text was still vector crisp.
It appears InDesign cannot individually correct images? Supposed to be able to select Object, Image Color Settings–but that appears to be grayed out no matter what I click on… OR upon importing an image you can click show import options and select the color tab to change to profile–but either of these applies it to the ENTIRE graphic/PDF. So…
Is this a function of their output house (they say no, they’ve checked)?
Is there another way to do this?Their source files are submitted in pdf form and are not editable except for globally.
Any insights welcome!
Di
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4 Replies
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Choose Print
Click the 4th item called output
On this screen you will find your line screen for he entire document to be printed.
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Output resolution and lpi are determined upon output. You can only down-sample the resolution when exporting to pdf. So if you “print” to a RIP, you can select lpi/dpi in the print/output/screening dialog box. But it should match the RIP settings, since it will have ultimate control over the plate/negative.
Tech-T Productions
http://www.technical-t.com -
Thanks for the info–A follow up question–So RIP process from InDesign is able to preserve vector crispness of text while applying halftone screens to images?? These are PDFs that are client submitted with a mix of text and images.
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InDesign does not alter your elements (for the most part – effects, flattening, and outlines can cause some problems), in that text is still text, vectors remain vectors, and tiffs keep all of the original resolution – even with placed pdf files. The postscript file that gets sent to the RIP still contains vectors and text. Everything gets turned into a dot at some point in the chain – even text. It is the job of the RIP to process this information and turn it into the dot representation appropriate for the selected press.
https://en.wikipedia.org/wiki/Raster_image_processor
Tech-T Productions
http://www.technical-t.com
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