Digital vs Analog Photopolymer Plates


Both products are of similar Photopolymer composition. The essential difference arises from the preparation of the photopolymer in the manufacturing stage. The Digital product recieves a proprietary coating (called an "Integral Mask"). This Intregral mask serves as a Film negative, allowing the Laser Imager to transfer the desired Image to the plate. In the Analog Process the required imagery is on the Negative . Light is passed through the Negative transfering the image to the plate. The remainder of plate processing, drying and finishing is very much the same.

There are supposedly many advantages of the Digital plate. Some of these are: hightlights are much improved (whiter whites) due to the the shape and size of the digital dot, hot spots on plates are eliminated, as subsequent exposures are not done in vaccum conditions and the ability to Image digitally, as well as to proof digitally signifcantly improves work flow.

Flexography

Packaging flexography is used for the production of folding cartons, labels, and packaging materials.  Flexography is a form of rotary web letterpress, combining features of both letterpress and rotogravure printing, using relief plates comprised of flexible rubber or photopolymer plates and fast drying, low viscosity solvent, water-based or UV curable inks fed from an "anilox" or two roller inking system. The flexible (rubber or photopolymer) plates are mounted onto the printing cylinder with double-faced adhesive. Plates are sometimes backed with thin metal sheets and attached to the cylinder with fastening straps for close register or ink alignment. This adds additional cost to the plate and requires more makeready time, but when quality printing is critical this type of plate can make the difference.








Sheane Graphics delivers outstanding plate quality and uniformity. This processor has the ability to produce a finished plate without solvent washout. As with all elements of the Platemaking, it is environmentally friendly with no solvents to handle, store or recycle. In addition, the new design saves space and requires no expensive plateroom construction.


The technology enhances the production of high-quality flexo plates quickly, by combining the efficiency and speed of digital plate imaging with the productivity and environmental benefits of dry, thermal plate processing. Our Plates are forthermal platemaking process, designed to meet the needs of high quality flexo with fine halftone, linework and solids.







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