Digital Print Guideline Files

This information is being provided to help you, our customer, experience the best possible reproduction of the files you provide GREGORY, Inc. To insure the printability and color reproduction accuracy, it is important this information be followed as each print file is being produced. 

GREGORY, Inc. prints with state of the art large and grand format digital printers. We regularly maintain, test the output, and calibrate our printers to achieve a consistent quality output. 

All printers and ink combinations have a finite number of individual colors they can reproduce. This is known as the color gamut. Digital printing can produce more colors (a larger gamut) than most analog printing processes (like offset printing). There is still a limit as not all colors designed into a file will be able to be reproduced. 

If the color specified in a vector file is a Pantone Matching System (PMS) spot color our RIP software color management system will interpret the color based upon the profile(s) and reproduce the color as close as is possible. If the file does not specify the colors as spot colors, but instead as CMYK values then the files are printed “as is” and the printed colors are more likely to shift from expected results. 

If there is a color in the file considered critical that must be reproduced to a specific standard, our printing technicians can attempt to achieve the color if a spot color in your file is specified in your file. It becomes a trial and error process and charges will be applied based on the time and materials used to achieve the color as close as the gamut of the ink and printer allow. 

When we receive your file, we will review the file and inform you if there are any problems with the file that need to be fixed. You may choose to fix the file and resubmit a new file or you can have our expert Technicians fix the file for a charge based upon time required to perform the repairs. 

Preferred File Formats 

  • PDF (PDF/x-4:2008) 
Other acceptable file formats
  • AI
  • EPS 
  • TIFF
  • PSB
  • PSD
  • JPG 

Input Profiles 

Files may be supplied in either RGB or CMYK and should have an input ICC profile embedded to ensure accurate color management. If an ICC input profile is not assigned sRGB or Coated GRACol 2006 will be assigned by GREGORY, Inc. A common misconception when it comes to color is just because a printer uses CMYK inks, it must be a CMYK file, when in reality a RGB image gives a much wider range of color. L-a-b and Pantone formats will also produce a more accurate color rendition.


File Scaling 

Files should be set up at actual size and all text on files must be created to outlines or converted to curves (paths) and include all linked images. 

Because Adobe Illustrator restricts files to 227” when either dimension of the image exceeds 227” it will be necessary to provide a reduced file when this is the case. Provide the file at either a 75%, 50%, 25% or 10% reduction while maintaining the correct proportions. 

Paneling

Images will be paneled for the best use of material, however custom panels can be accomodated for an additional charge. 

Cut to Shape 

A file being cut to shape (contour cut) must include a cut contour line set up on a separate layer and a custom spot color layer. Both layers are to be named “CutContour”. A printed bleed of .25” beyond the cut contour line is recommended and all cut elements must have a minimum stroke thickness of .1”. Text elements must be a minimum of .75” in height. 

Resolution

(DPI) Raster Images Minimum recommended resolution of Raster images is 72 dpi at final output size. Average Resolution and Viewing Distance • Five feet or less = 150-200 dpi • Greater than five feet to 20 feet = 100-150 dpi • Distances more than 20 feet = 50-72 dpi Please supply your files with the proper resolution for the intended viewing distance. 

Other Important Considerations 

  • Transparencies, Gaussian Blurs, and Overprints can cause adverse color effects and may not produce correctly. These should be avoided. 
  • A raster image will not allow our software to match specified PMS spot colors. 
  • Please remove all unnecessary elements from your document and save each design as a separate file. 
  • A computer monitor is not an accurate guide of final color. 
  • For accurate color representation, use a vector file with PANTONE (PMS) spot colors assigned. 

Errors in Files 

GREGORY, Inc. is not responsible for typos, incorrect information or colors in a supplied file. In the event there are errors, a new file may be submitted or when possible, adjustments may be made by the GREGORY, Inc. Art Department for an additional charge.



Tips for Saving PDFs

Depending on software, some helpful setting for saving to PDF include: 

  • Preserve Editing Capabilities
  • Set “COMPRESSION” to “Do Not Downsample” and the “Compression” to none. Although it may create a larger file, it may help eliminate resolution issues of raster images.
  • Uncheck “All Printer’s Marks” and “Bleed” settings
  • For a more accurate color representation, there should be “No Conversion” for the “Color Conversion” and the “Profile Inclusion Policy” should be set to “Include All RGB and Tagged Source CMYK Profiles.”

Some software and older programs may not provide all of the above options. Files can also be saved using the Adobe PDF Preset: PDF/x-4:2008

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