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FLEXO Magazine : July 2014
ELIMINATOR Introducing a New Standard of Label Metering Excellence • eliminates basic print defects including UV spitting • superior wear resistance • low friction against anilox • NEW AF TIP reduces break-in time • new alloyed material + dimension ...developed to meet the challenges of today’s high performance press room. R TM Printing Doctor Blades FLXON IS THE EXCLUSIVE DISTRIBUTOR IN CANADA - USA - MEXICO FOR +1.704.844-2434 www.flxon.com Performance Through Quality ELIMINATOR Introducing a New Standard of Label Metering Excellence • eliminates basic print defects including UV spitting • superior wear resistance • low friction against anilox • NEW AF TIP reduces break-in time • new alloyed material + dimension ...developed to meet the challenges of today’s high performance press room. R TM Printing Doctor Blades FLXON IS THE EXCLUSIVE DISTRIBUTOR IN CANADA - USA - MEXICO FOR +1.704.844-2434 www.flxon.com Performance Through Quality “ Mitigating Consequences of Over Impression As we’ve shown, there are a lot of reasons printers feel the need to slight- ly over impress a job. But there are strategies for mitigating the effect and need for over impression. Gray Component Replacement (GCR) in the file prep stage can help immensely to minimize the negative effects of over impression. GCR is the removal of most of the multichannel whites and grays from a 4-color (or more than 4-color) process. Those grays are then seamlessly added back as a full range black, maintaining the shape and depth of the original. Neutrals that were once three colors are now mostly black. With less ink behind grays there is less variation in color throughout, as pressure is increased. GCR also produces better highlights because a majority of colors are created by only one color (in the case of a spot) or two colors (CMYK or expanded gamut) for hue, and then black is added for shading. Engraved elastomer sleeves mitigate the effects of over impression and allow for wider tolerance in impression pressures. Elastomer com- pounds can be specifically tailored to printers’ ink types, which allow for optimized ink transference. A key component to direct ablated elastomer sleeves is known as “below surface imaging.” By taking the highlight dots below surface (1 percent to 5 percent) we can alleviate dot gain and problems with damaging highlight dots, especially at higher pressures. Laser engraved sharp shoulders on the edge of text and borders help to minimize fat text and fill in on reverse text. Engraved sleeves can also offer increased uniformity across the web, especially when compared to flat plates. This can mitigate the need to over impress and can greatly increase the life of a sleeve. Another reason to use engraved elastomer sleeves is their durability. Elastomer is inherently more durable than polymer. You can expect two to four times the run length without degradation in highlight dots com- pared to polymer. What does this mean? Elastomer decreases the need “...While many modern presses take care of these practices with automation, there is no substitute for an experienced pressman operating with a company’s unique set of best practices for its specific press. ” Elastomer decreases the need to over impress to achieve the kiss impression at the later stages of a typical printrun. UCR — black channel One of several GCR advantages (pictured, black channel) is a reduced color ink consumption, as composite grays are replaced with less expensive black ink. 24 FLEXO | JULY 2014