Computer-to-plate (CTP) technology is used on a regular basis in offset, screen-printing workshops, and flexography. As for pad printing industry, computer to plate equipment – laser plate-etching systems – have been introduced only recently. However, with most recent developments, laser-based methods have the potential to master pad printing market over the new couple of years.
CTP benefits: Laser systems enable the person to convert ctp machine in China to a best etched picture in just one to five minutes. Costs of movies, chemicals, consumables shipping, exposure units and removal of hazardous materials are removed, as are maintenance contracts on processing tools and costs of outsourcing steel plate making. Double-sided laser-etched plates can accommodate up to 4 images, which decreases plate usage.
You’ll find 4 steps to create a plate: import the graphic file into the system ‘s software, paint the halftone style to the image, establish the etch-depth parameter in the laser ‘s operating program, then press start. Laser-imaged graphics are very first generation so there’s no loss of resolution.
Etch depth and halftone pattern can be accurately fine-tuned to match the image type you wish to print, the viscosity and rheology of the printer ink used, the speed of the printing machine, thus the durometer of the printing pads used. As specs will be kept on the computer, resulting picture quality is entirely repeatable.
Laser-based CTP programs can accommodate amsky ausetter lasers for fine, bold graphics, and combination fine/bold. Laser-engraved plates have a straight walled etching and more highly accurate inkwell than polymer cliches and thick or thin steel plates.
Choosing a CTP system: Laser type. Nowadays, 3 kinds of lasers have been used to create pad printing plates: diode-pumped Yttrium Aluminum Garnet (YAG), Ytterbium fiber laser (YAG wavelength), and CO2. The main differences between these products are maintenance, spot size, and power to etch a variety of materials.
Maintenance – The diode-pumped YAG features a diode bar that heats up allowing it to warp after aproximatelly 10,000 hours of use, requiring costly replacement. The Ytterbium fiber and CO2 lasers don’t have any diode bar so they have virtually no maintenance requirements for as much as 70,000 hours of operation. Spot size – Because the wavelength associated with a YAG laser (1.064 microns) is 10 times smaller than the CO2 wavelength (10.64 microns), the former has the ability to generate a lot more detailed graphics than CO2. Materials – YAG lasers are ideally suited for metals. A CO2 laser beam is a bit better assimilated by organic materials – wood, paper, plastics, glass, textiles, and rubber.
Application. To ensure seamless integration into the workflow on the target company, laser software should be able to import are,ai (Adobe Illustrator),,dxf (CorelDRAW, AutoCad), and,bmp (bitmaps, gradients, process color images) files. In order to get halftone or maybe dot design, the software program should have the ability to apply various hatches (or separation anhubg the laser lines) to the picture. For fine line graphics a tiny hatch can be applied, for bold graphics a greater hatch can prevent “scooping”. The electricity and frequency of the laser beam must be variable to finely tune the plate depth to offer likely the greatest printing plate for the kind of ink, production speed and substrate. The target level of etch in the plate is,001″
System features. The cron ctp have several available features to consider: Size of system footprint – stand by itself or benchtop system. Vector-tracing software. Micro-adjust focal distance. Plate registration systems. Particulate evacuation systems. Pre-etch laser pointer. Availability of auto load.
It may appear like slightly odd that Europe seems to be at the front of this technology, one normally thinks of Japan or the Usa for innovation but for after legislation could have been a help rather than a hindrance. Europe has improved it’s expectations of industry meeting environmental needs in a way which is forcing improvements in your office.
Traditional film making uses chemical compounds which are hazardous in use and hard to dispose of, maybe this has increased the need for earlier film items to improve. Many litho printers (us included) will have utilized laser plates at once or perhaps another for easy short run one colour jobs, it’s quick and easy, printed directly from the pc. The problems are damping issues that make these plates tough to run these days it is achievable to formulate constructive metal plates making use of inkjet film. Each and every year the report from DRUPA is the progress the printing industry is making in CTP.