Brisque to Lotem 800 II / Lotem Quantum Family - Kodak

108 Chapter 4 – Configuring and Calibrating the Spectrum Platesetter from the Brisque Workstation7. The table in the Tone Reproduction Curve dialog box contains threecolumns into which you enter values for creating a ToneReproduction Curve:• File Value—contains standard reference values, taken from a testexposure. It’s recommended to use 21 different file values.• Required on Press—contains subjective, user-defined values for thedensity that is required on the proof. These values are either anapproximation of the correction values, made by an experiencedtechnician, supplied by the media vendor.• Measured on Press—contains the density values measured on theproof after the Job has been exposed. The Tone Reproductionapplication automatically compares the measured values againstthe file values and creates a curve that makes the correction for dotgain.8. Values entered into the three columns result in separate curves -Required and Measured. The two curves make up one ToneReproduction Curve file. The exposure that uses the file is affected byboth curves.• To enter a set of co-ordinates into the table, place the cursor inthe box below the relevant table column and enter in a value. Useeither the TAB key or the mouse to move between boxes.