Here are a few guidelines for submitting your work for printing. There are two sets of guidelines - one tailored towards design students and professionals who deal primarily with vector files and another set of guidelines for rasters (everything else). I also have specific instructions on how best to transfer CAD and GIS files for printing - please contact me for more information.
- Convert all text to outlines - removes potential for misinterpretation of fonts between operating systems and software
- Export as PDF after disabling resampling and lossy compression (JPEG) compression methods. Disable colour conversion and ensure that all colour profiles will be embedded prior to PDF generation.
- Embed final, cropped size into your file - do not add extra white space around your file if you want crop marks and crop marks aren't in your files.
- If your layout or illustration contains rasters, ensure that your file is exported using ZIP compression or some other lossless method of compression
- Avoid rasterizing any of your content before exporting - the software I use will usually rasterize at 1440DPI or higher. If you rasterize at this resolution at the final output size and don't use any form of compression your file will likely not fit on a DVD.
- For best results, ensure that your entire workflow is in the Adobe RGB or larger colourspace to take full advantage of the wide gamut of the printers and profiles.
- DO NOT CONVERT TO CMYK COLOUR SPACE - The CMYK colour spaces that are likely installed on your computer usually reflect [real] offset printing press limitations which are unable to reproduce a lot of colours that are represented by many RGB colourspaces that can be reproduced by this printing service.
- Ensure that your colour profile is properly tagged in your document
- Embed final print size for your file.
- Use uncompressed, single-layer 16bit TIFF files for optimal print quality
- Low compression JPEGs are also acceptable, as are many other file formats.
- Do not upsample your file - the software driving the printers will automatically optimize resolution for each output device.
- If you have a JPEG or 8bit TIFF there is no benefit to converting to a 16bit TIFF before transmitting the file for print. Whenever possible, maintain 16bit per colour channel for your entire workflow.