GENERAL GUIDELINES


 

The following links describe important things to remember when preparing digital art for submission to Cenveo Publisher Services.

 
 

  Acceptable resolutions

  Scanned Images

 

  Color space requirements

  Internet graphics

 

  Cropping and sizing

  Multipanel figures

 

  Font Usage

  Supported applications


 

Acceptable resolutions. It is extremely important that the proper resolution be used when submitting digital artwork. Low resolution graphics are commonly misused in the publication process. In the past, online images have typically been viewed on a 72 or 96 DPI monitor. The high resolution screens on tablet computers are gaining popularity, and all submissions of raster images should have a minimum resolution of 300 DPI/PPI. This allows users a better viewing experience and supports minimal requirements for laser printer output. For reference, categories of raster images are described below:

  • Monochrome
    Images that are purely black and white. Images such as line graphs (shown left) fall into this category.
  • Halftones (RGB/Grayscale)
    Images containing pictures only. For example, an image not containing text labeling or thin lines (shown center)
  • Combination Halftones
    Images containing pictures and text labeling and/or thin lines (shown right).



 


Color space requirements. All digital art submitted must be bitmap (Monochrome), grayscale, or RGB.

Historically, color images were submitted in CMYK format. We have now adopted RGB as our primary color mode, to ensure that the online version has all of the brilliant colors of your original figures.

Note: If an original image in the RGB color space is converted to CMYK and saved in that color space, the brilliant colors are lost. The conversion is a one-way process. While an RGB image can be converted to a CMYK image, a CMYK image can be saved as a faux RGB image but that will not restore the original colors. The RGB color space is the default mode for most digital cameras.

 


Cropping and sizing. All graphics should be submitted with a consideration of online viewing while allowing for the option of print output. The published image may be seen on monitors of various sizes. With that in mind, the maximum width of a graphic should be 7.2 inches (18.2 cm) and a maximum height of 6 inches (15 cm). When scaled, these dimensions allow for the optimum screen ratio of 8:6. Each image included within a submission should maintain the same fonts and type sizes when all figures are viewed together.

Crop figures so that no white space extends beyond the border of the figure. This will help reduce file size and improve accuracy when placing the figure in combination with other elements on the page.

Also, check each graphic carefully for unnecessary elements (items not intended to print) around the figure and off the page (i.e. type, lines, etc.). Some unnecessary elements may not be visible because they are assigned a white fill or stroke. Items such as these should be found and removed.

 


Font usage. Avoid the use of decorative, script, handwritten, or highly compressed fonts. Instead, limit typefaces to legible fonts such as the following - preferred for the creation of digital art figures:

  • European PI
  • Helvetica
  • Mathematical PI
  • Times Roman
  • Symbol
  • Arial

CAUTION: The usage of these fonts does not ensure that font problems will not occur. Please be cautious and view a PDF version of your image to ensure the text appears as you intended.

In some instances, fonts may need to be converted to paths (or outlines) in the application they were created with. For example, Adobe Illustrator and CorelDRAW can convert type to paths. Please do this conversion prior to exporting to EPS.

NOTE: Font usage does not apply to pixel editing programs like Adobe Photoshop because the typefaces are not necessary to process a raster image. The other legibility isses still apply.

 


Scanned Images. Before placing images in programs like Illustrator, FreeHand, Canvas, or CorelDraw, the images should be checked for the following:

  • All placed art should be in TIFF or EPS format
  • The resolution should be at least 300 DPI
  • The color mode of the TIFF/EPS should be either Monochrome (bitmap mode), Grayscale, or RGB. The RGB mode is used for color figures and Grayscale/Monochrome for black & white.
  • Crop and size images properly before importing so that masking, scaling, or rotating is not necessary while in the drawing program.

 


Internet graphics. Graphics downloaded or saved from web pages are not acceptable for submission for publication.

While these graphics may have been suitable in their original online context, their resolution is far below acceptable quality standards for review and publication.


 


Multipanel figures. Make sure that any multipanel figures (i.e., figures with parts labeled a, b, c, d, etc.) are assembled into one file. Rather than sending four files (Fig1a, Fig1b, Fig1c, Fig1d) the four parts should be assembled into one piece and supplied as one file.

Numbers, letters, and symbols used throughout a multipanel figure must be consistent in font size and style. The smallest font size in a figure must not be less than 70% of the largest font in that figure. In the examples below, the various text sizes in the "good" figure fall within an acceptable range. The "bad" figure has very tiny numbers along the charts axes with much larger text used for locants and other elements.



In some cases, a multipanel figure may consist of halftones (e.g., photographs, or scanned images) with added elements of text, charts or lines. The most effective way to arrange and assemble these elements is a vector editing program such as Adobe Illustrator or CorelDraw. These applications offer far more control of image attributes and are the best method for adding text, charts, or lines.

CAUTION: Some authors may have already used PowerPoint to assemble their multipanel figures, but good halftones can lose both color depth and resolution if they unnecessarily pass through PowerPoint. For the same reasons, MS Word and Excel are not suitable programs for assembling multipanel figures.

In all cases, the final file format must be EPS or TIFF.

 


Supported applications.  Before Cenveo Publisher Services can accept files created by an application, the application must be thoroughly tested by CPS.

Our intention is not only to support as many applications as possible, but to add new applications whenever possible.