Screen launches new VLF platesetters

Screen has announced a new thermal VLF platesetter, the PlateRite Ultima 40000N, which use an external drum design and are suitable for plates large enough to accommodate 40 A4 pages. They should be available worldwide at some point this month though this will vary from region to region. 

Screen’s PlateRite Ultima 40000N VLF platesetter benefits from the latest GLV imaging heads.

These new models appear to be replacements to the existing 40000S and SX machines, and the main improvement appears to be a much higher throughput. That said, Screen also suggests that the new models offer more streamlined processing and reduced operator workloads. 

The key to these devices is the Grating Light Valve or GLV heads used to expose the plates, with resolutions from 1200 up to 2540 dpi. Each GLV array is made up of thousands of microscopic reflective ribbons that have been placed over a silicon chip. These ribbons move up and down to reflect or diffract an imaging laser targeted at the array, which has the effect of turning on and off a large number of optical channels, allowing the head to expose a far wider swathe on each rotation of the drum than the laser on its own could do. 

There are two variations of the 40000N. The ZS has a single 1,024 channel laser diode head, and can produce up to 24 plates per hour. The ZT has two of these GLV heads and can produce up to 35 plates per hour. 

The 40000N models can be loaded with single plates up to 2,280 x 1,600 mm, or with two plates up to 1,060 x 1,600 mm, providing a fast option for use with smaller presses. They will take plates from 0.2 to 0.4mm in thickness and can handle both process-less and traditional CtP plates. They can be configured with up to ten press punch systems. 

The ZS and ZT are also compatible with both Screen’s MA-L40000N multi-cassette autoloader, which can automatically deliver up to 300 plates from each cassette, and the SA-L40000N SKID autoloader, which can handle 600 plates loaded onto a pallet. Up to two of these autoloaders can be connected to each platesetter, allowing extended continuous production and reducing damage and loading errors from handling the VLF plates.

You can find more details on Screen’s CtP range from 

…with a little help from my friends

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