results of Equinox testing
Hallo friends,
My name is Sergey, I from Russia, excuse me for my bad English language.
Allow to acquaint you with reached for today, results of testing of software product , from EskoArtwork company. The product is intended for multicolor separation with use from one to three additional colors.
Testing is spent on the seven-colorful digital printing machine hp indigo press 5000 with use as additional paints Orange, Green, Blue or Violet.
For me as for the production worker, in the course of testing the greatest interest is represented by questions of practical use of a product, possession cost, simplicity of the interface, predictability of options and results of the practical printing. Theoretical bases of Equinox algorithm or details of its practical realisation, at the given sight at a product, fade into the background.
Thus, allow me to acquaint you with impressions of process of practical use Equinox under production conditions.
The most important thing and, perhaps, basic impression of a product: Equinox it was not created for «a shock of foundations» of the printing of images based on subtractive color synthesis. Equinox grows out of evolutionary development of traditional color separation and the printing in a direction of expansion of their gamut.
Basically it is difficult enough to assume other ideology of a product created Mark Samworth, vice- president of company Artwork Systems, the expert in flexographic printing and electronic processing of images.
Equinox corresponds to a class of products classified by me as «Expanded CMYK» or «CMYKPlus» that allows it, not «is inventing a bicycle», to incorporate all the best from the fulfilled algorithms classical CMYK color separation.
Simultaneously Equinox it is possible to carry to a class of the products which algorithm of work is based on tabular transformation of color, that is co-ordinates of color samples of the final image pays off, leaning on ICC profiles of initial and final color model.
Thus, for work Equinox it is required four standard four-color ICC profile. Profiles are created by the standard software for creation CMYK profiles, no multicolor expansions are required. In the course of testing it is used X-Rite ProfileMaker 5 and scale IT8-7/4. It follows from this that any additional skills which are distinct from skills of creation CMYK profiles, from experts of prepress department preparations it is not required.
The first and the basic, in terms Equinox, «Master Profile», is the most usual CMYK a profile created on an invariable scale. Also for work Equinox it is required from one to three ICC profiles for complementary colors, in terms Equinox «Sector Profile» for sectors of a color circle located between the triad cores.
For reception «Orange Sector Profile» the same four-colorful scale in which channel Cyan is replaced on Orange is used. For reception «Green Sector Profile» channel Magenta is replaced on Green, for reception «Blue Sector Profile» channel Yellow is replaced Blue, and channel Black, on Yellow.
All sector profiles are connected independently from each other in menu point «Printing Condition» if any of them is not connected, Equinox turns to system CMYK color separation.
The behavior of algorithm in each of the above described sectors of a color circle copes independently, by means of curves on parameters: «Lightness» «Chroma» «Hue». Parameters are united by the general menu point «Gamut Controls». The major in practical operation, is management on «Chroma», this parameter sets quantity of a complementary color in the final recipe.
By means of parameter «Hue» restrictions on pollution by complementary colors of areas of pure triad colors are entered, management in parameter «Lightness» is applied to restriction of use of complementary colors in areas high lights for the purpose of elimination of problems with formation of local contrasts.
Operating point of the menu second for the importance is the menu «Conversion Settings» in which the most important are the management menu «Source CMYK Profile» and «Black Generation».
On it transfer and the superficial description of managing menu point of Equinox interface comes to an end, its brevity visually shows simplicity of practical use of a product in daily activity of employees of prepress department preparations, and absence of requirement for acquisition of additional knowledge by them and skills. Training by delivery and more exhaustively made "User's guide", with a high share of probability guarantee absence of serious technological problems.
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