It is written in Adobe Systems Inc.'s PostScript page description language.
The Ugra/Fogra Digital Print Scale defines a test image consisting of seven function groups and a register scale for each of the process colors black, cyan, magenta and yellow.
The Ugra/Fogra Digital Print Scale is processed and output at matched resolution on PostScript-compatible printers, image setters and electronic publishing systems.
The Ugra/Fogra Digital Print Scale is particularly suitable for the quality control of digital printing systems.
The Ugra/Fogra Digital Print Scale is an effective tool for characterizing the condition of digital output devices. It has a very broad range of potential applications, which users should try out individually according to their needs. Use and correct interpretation depend on the user's understanding of the digital processing system. Technical proficiency is a significant factor.
The following criteria can be viewed and assessed on the output test image:
- user and device specific information
- resolution
- directional resolution (vertical/horizontal)
- highlight and shadow rendering
- image setter or digital printer setting
- register deviations
Various ISO 9001/2 related applications
- device acceptance
- periodic checking of operating conditions
- digital printing, film and plate exposure
- testing material suitability (ink, stocks)
- possibility of integration in FM applications
The characteristic transmission curves for the four process colors black, cyan, magenta and yellow can be assessed.
Quality requirements can be objectively specified under ISO 9001/2.
Application
The digital Print Scale is first imported into processing programs and then output by these programs on a PostScript-compatible device. The output Digital Print Scale characterizes the material output (checkerboard patches, line patches) in combination with the specific editing processes of the workflow and RIP user applications (halftone wedge).
The EPS version of the Ugra/Fogra Digital Print Scale can also be sent direct to the digital printing system's RIP. The output Digital Print Scale characterizes the digital printing system's material output.
