Viewing Density Trends with Expresso Mini

ExPresso Mini is a SpectroDENS feature that shows print density trends as a bar graph. Press operators can use this capability to track trends across multiple sheets or across the press width. It is a simple tool to help maintain print uniformity. STEP 1: Use the up/down arrow buttons on SpectroDENS to select the Measurements Function menu on (bottom left menu). Scroll through the menu and select the Expresso Mini function.  Expresso Mini displays results…

Field tests with print samples using XRGA and Techkon instruments

A previous blog post (“Consistent Color Measurement”) discussed instrument settings and procedures to ensure consistent color measurement throughout the supply chain. Once these are all in place, how well will instruments agree? All spectrophotometer manufacturers quote “repeatability” as one of their specs. This is the degree to which an instrument agrees with itself when making measurements of the same spot on the same sample, over a short period of time. Instrument repeatability is a small…

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