ISO 12647-2 Presswork Procedure Quite often we get the question of how to achieve ISO-12647-2 standards in press (not for certification purpose ofcourse). So decided to write down the steps need to be followed. 1. We have to make a test form with linear plates (test form high-res file is with Mr.Saravanan of Heidelberg). A linear plate means, input […]
Converting raster images from an RGB colorspace into a print CMYK colorspace has two significant impacts: 1) Typically a compression and alteration of colors as the image is transformed from the original RGB gamut to the different gamut used for CMYK presswork. 2) The on-press printability of the imagery in terms of color stability, press performance/runnability, […]
Do you know the Difference between GRACoL, GRACoL 7 and G7? There has been some confusion about the terms “GRACoL” “GRACoL 7” and “G7”, which many tend to use interchangeably even though they have very different meanings! GRACoL®, in the generic sense, refers to the IDEAlliance Committee that began in 1996 as a graphics arts […]
sRGB v4 Preference: The sRGB v4 ICC preference profile is a v4 replacement for commonly used v2 sRGB profiles. It gives better results in workflows that implement the ICC v4 specification. It is intended to be used in combination with other ICC v4 profiles. The advantages of the new profile are: More pleasing results for […]
If sheets are pulled freshly printed from the delivery and measured, the ink is still wet and has a shiny surface. While drying, the ink penetrates the paper (absorption) and loses its gloss. This not only changes the color tone, but also the density. It is only possible to a limited extent for the press […]
Brilliant colors true to the original on a premium surface – that ̓s what distinguishes a high-quality print product. Many elements in prepress and printing impact on a product ̓s color fidelity. The various input and output units in a print shop ̓s production process, consumables and other factors can cause deviations in color. A […]
A host of factors affect the quality of your printed products: in addition to the machine itself, there are the printing stock and inks, as well as external factors such as atmospheric humidity, and room temperature. Often, when problems arise in the pressroom, the root cause is not immediately apparent. Frequently, it takes time to […]
Rendering intents In general, actual device color gamuts (the range of all possible colors which can be represented or produced on the device) will not be large enough to reproduce the desired color appearances communicated by the PCS values. Four rendering intents (gamut mapping styles) are defined by the ICC in order to address this […]
Version 4 of the ICC profile specification was published in 2001. The v4 profile format has introduced a number of changes when compared to the previous v2 specification. These changes provide a number of advantages, the most significant of which follow from the removal of ambiguities from the specification and a more precise definition of […]
Color Sherlock's Journal 