Why use EPS files for digital bar codes?
Publisher Services provides barcode files in .eps format. The reason we do this is to make sure that your bar codes are high enough resolution for printing.
Why can't we provide a .jpg or .tif image? There are two types of computer graphics – raster and vector. The raster graphic is composed of pixels, and vector graphic is composed of drawing paths. It is important to understand the difference between these two types when creating barcode graphic images.
Raster Images
A bitmap is basically an array of pixels with values indicating the color. The bitmap sizes are defined in pixels. BMP, TIF, GIF, JPG, PNG and most other graphics formats are raster graphics. Since the sizes are measured in pixels, the print dimension depends on the resolution of the printer.
Vector Graphics
A vector graphic contains the drawing instructions other than the color value in pixels. For both Mac and Windows platforms, EPS is the most widely used vector graphic format. A critical feature about our EPS files is that the dimension measures are completely based on the output resolution of a printer. To use EPS, you need to have a printer with postscript enabled.
Posted in: covers, formatting, images, prepress, printing, publishing on Thursday, May 21, 2009 at at 8:57 AM
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