Precision Color Evaluation There's only one way to manage color effectively, meet customer expectations, and maximize job profitability! That is: Objective Color Measurement. In other words, densitometry. Essentially this is a matter of reading a colorbar for solid ink, dot gain, or other density-derived characteristics. However, the limited trim areas of a short cutoff press require use of narrow 1/16" (1.6mm) bars for color control. No other device on the market can do this. Overview of Basic Operation Setting up a press is logical and uncomplicated. After keying in job parameters (type of press/sheet size/colorbar structure), position the colorbar between two horizontal scribelines and against the side guide. The vacuum hold-down secures sheet placement and the SDT does the rest. A typical scan takes only 10 seconds. As the SDT scanning head travels across the press sheet, it strokes the colorbar VERTICALLY to determine bar position and skew. On the scanning head's return trip, having detected the skew of the colorbar, the head scans right down the middle of the bar for accurate densitometric readings. SDT Scanner The SDT has an accurately flat, rugged platen with vacuum hold-down. The design supports the bridge and measuring probe head. Unique pass-through feature allows the entire press sheet to slide freely under the bridge, enabling scans of centrally located colorbars and bars at the bottom of the sheet. SDT Intelligent Analysis Sampling a few sheets during the run provides an immediate comparison of performance to specifications.

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