How can I get a good color reproduction effect on a digital printing machine? "This is a fine balance problem," according to Mr. Doug Polarkowshi, a technical expert at UARCO's printing department, "In order to explain the toner problem on paper, I let customers recall A game often played by children of the older generation is to rub the balloon on the hair, and then it can be glued to the wall. This game is easier to achieve than the summer when the weather is dry, and this is also the fall of the toner reason." According to the point of view of the printing staff and the production center staff, to obtain good and stable colors from the digital printing press, you need to have the corresponding tools and experience. No one of them believes that color control and calibration can achieve a fully automated process. "We still need to have a good eye," Mr. MarcOrchant is the printing department manager of Subia, a digital printing company. He said, "And, when we are dealing with toner, we must also consider the new color gamut." A Chrompress user, Mr. Orchant, said that Subia utilizes the company's most stable products-for example, like high-resolution film plus high-quality sheets for this work. Next, the technician created several test files that included colors and textures (like gems, skin tones, neutral grays, etc.) that were difficult to replicate. Finally, after linearizing the device, they calibrated the color scale under white light. Now, the manufacturer provides the company with many tools to help them solve this problem. Agfa now offers "second versions" of three types of Chromapress consumable materials (toner, developer and imaging drum), mentioned by Agfa's product manager. Agfa emphasized that in order to avoid the expiration of developer, they already have a routine maintenance procedure. Moreover, the Chromapress device can perform color registration and color density adjustment through the server, and can be randomly adjusted, and the adjustment can occur on the printed parts of various colors. The thoroughness of this kind of work hopes to get results from IBM. Mr. Chrisparker, the business manager of IBM ’s color printer products, mentioned that the company spent nearly a year testing 10 identical Xeikon printers before releasing their InfoColor70 product. “We try our best Find the largest area of ​​change in the display effect between the equipment. The results clearly show that the problems caused by calibration, printing materials, or any other changing factors are much smaller than the problems caused by the actions of the operator only. The software It may just be that the registration problem has changed, and many operators may have several changes, resulting in a lot of waste. " Mr. Parker believes that this trend mainly comes from the operator ’s experience in offset printing. “In offset printing, as long as the equipment is kept on until the colors on the ladder look good, it is fine. But for digital printing machines, no That ’s right. " Interestingly, Mr. Parker claimed that the color and press control issues in digital printing are basically the same as in offset printing. "For example, for a former offset printer, the adhesion of toner is no different from the ink-water balance in offset printing. Cylinder voltage-has a great influence on digital color reproduction, a bit like the pressure of a rubber roller. On a digital press LED exposure can be compared with plate exposure, "he suggested. IBM's long-term workflow analysis of InfoColor70 before use enabled Agfa to include fully automatic density measurement technology in their products. This product is also equipped with a built-in heating head (to improve humidity and temperature control) and a Gretag density meter. The latter device is connected to the server, and as long as needed, it can prompt the color value of the coding job. Moreover, InfoColor70 also provides: SWOP used for automatic color matching and a color lookup table extended by European specifications. Mr. GeorgeWillock, President of ColorStream, is very proficient in InfoColor. This digital market development company has sold 650,000 copies of the copy program in 90 days. Mr. Willock said that ColorStream users need user solutions for color management. Unlike the standard color tool for loading InfoColor equipment, the company (and users) use ColorPartnership's OptiCal products to achieve high-quality remote proofing and soft proofing via ISDN or T1 lines. If color control of offset printing is a goal, then Indigo users are eager to mention that their presses (Eprint1000 + and Omnius) do the same. "It can get the best color quality," HollisDigital's Indigo branch manager, Mr. Charlotte Krebs asserted. "It is worth mentioning that Indigo's technology is unique in digital printing presses. It uses liquid color electronics. Ink to get high gloss, similar to offset printing effect. " Hollis is a digital printing company with 25 employees. Mr. Krebs said that the biggest difficulty now is to match the color reproduction of early-printed or reprinted prints. The company keeps samples of all jobs to help visual matching. "Sometimes, our operators can even remember exactly how a job was printed," Mr. Krebs commented. However, more systematically, Krebs employees formed some operating procedures: daily calibration of the equipment, its own color control page, and careful density measurement technology (to ensure that the equipment will not be over compensated). If the color problem still exists, by outputting 3-4 proofs, "we will make adjustments on the press". If this does not work, Mr. Krebs said that they will go back to PhotoShop to adjust the files. Rarely is a mechanical problem, at this time it is best to leave it to the printing staff to solve, he suggested. With the output of Xeikon-based equipment, if it cannot be maintained properly, the developer may fail, just like the plate wear in the production process of Indiog (the voltage will decline). Mr. Mike Chiricuzio, a long-time user of E-Print1000 and the general manager of Sequel Inc., said that he is happy to have a new upgrade in his front-end software, which can synchronize the life of the printing plate and automatically carry out change calibration. In addition, for Sequel's more than 700 customers, the Indigo system can store density settings for each job to ensure color stability. For the samples processed by most digital presses, climate control is the key. Sequel (at 2% humidity) has installed a humidity regulator near the printing press and even used it in conjunction with the factory's air conditioning system. In order to get better colors, Mr. Chiricuzio looks forward to the emergence of an updated version of the Indigo ink system-ElectroInkIII. He hopes that this system will provide a more gloss-matched effect with the paper used by Sequel. In the final analysis, digital printers did not agree on the level of color reproduction they could achieve. On the one hand, Indigo users like Mr. Krebs like to show off the copied 2point text to their customers under a magnifying glass and say, "This is not possible in toner-based printing technology. Balloons For Birthday,Balloons For Birthday Party,Wedding Anniversary Balloons Xiongxian Tonghai Latex Products Co., Ltd , https://www.tonghaiballoon.com