Digital press simulates traditional presses for label proofing
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The test was conducted using a HP Indigows 4050 digital press to simulate the new Sun Solar satellite label roll press proofing. The color management software uses German GMG, and the spectrophotometer uses X-Rite's DTP70. Proceed as follows:
In the first step, the prepress plate system is calibrated to measure the characteristics of the customized version of the device, especially the laser imagesetter. Select the substrates, inks, and plates that need proofing;
The second step is to find the printing characteristics of digital printing presses and traditional printing presses. In HPindigows4050 digital printing machine and traditional printing machine, print the same ECI2002 standard color table and proofing document respectively with the same substrate, get the proofs after printing, use the GMG color management software to get the characteristic ICC output of the digital printing machine and the traditional printing machine respectively. curve;
The third step is to obtain the simulation curve for digital proofing through analysis of color management software. After analyzing the ECI2002 standard color table printing proofs, the color management software can obtain two ICC characteristic curves. Through the analysis of these two curves, the color management software can obtain the curve that is converted between the two, that is, digital proofing. Used analog conversion ICC curve;
In the fourth step, the digital press simulates proofing. In digital printing press RIP, the analog conversion ICC curve obtained from the third step is placed, and the document that needs proofing is printed, and a second printing proof sheet is obtained. Compared with the first printing proof of the conventional printing press, two are found. The sheets are strikingly similar. So, under the premise of printing materials, inks, printing plates and other printing conditions unchanged, we can use this ICC curve to digital printing press for the traditional printing press. Digital printing machine proofing is different from the existing digital proofing. The biggest features are: Absolutely true outlets, which can be used for spot color proofing.