Computer-to-plate (CTP) technology is used on a regular basis in offset, flexography, and screen-printing workshops. As for pad printing business, computer to plate equipment – laser plate-etching systems – have been introduced only recently. Nevertheless, with latest developments, laser-based systems have the potential to master pad printing market place over the new couple of years.
CTP benefits: Laser systems allow the person to turn ctp machine in China to a best etched picture in only one to 5 minutes. Costs of films, chemicals, consumables shipping, exposure units and removal of hazardous materials are eliminated, as are maintenance contracts on processing tools and expenses of outsourcing steel plate making. Double-sided laser etched plates are able to accommodate up to 4 images, which minimizes plate usage.
There are 4 steps to create a plate: import the graphic file into the unit ‘s software, paint the halftone style to the image, specify the etch-depth parameter in the laser ‘s operating software, and press start. Laser-imaged graphics are first generation so there’s no decrease of resolution.
Etch depth plus halftone pattern can be accurately fine tuned to match the image type you would like to rheology, the viscosity, and print of the printer ink used, the speed of the printing machine, and the durometer of the printing pads used. As specs can certainly be saved on the computer, resulting photo quality is entirely repeatable.
Laser-based CTP programs can accommodate uv ctp lasers for fine, bold graphics, and combination fine/bold. Laser-engraved plates have a straight walled etching and more accurate inkwell than polymer cliches and thick or thin metal plates.
Choosing a CTP system: Laser type. These days, three sorts of lasers have actually been used to build 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 ability to etch different materials.
Maintenance – The diode pumped YAG carries a diode bar that heats up allowing it to warp after about 10,000 hours of use, requiring expensive replacement. The Ytterbium fiber and CO2 lasers haven’t any diode bar so they have virtually no maintenance requirements for as much as 70,000 hours of operation. Spot size – Because the wavelength of a YAG laser (1.064 microns) is ten times smaller than the CO2 wavelength (10.64 microns), the former can create more detailed graphics than CO2. Materials – YAG lasers are ideally suited for metals. A CO2 laser beam is a bit better absorbed by organic materials – wood, paper, plastics, glass, textiles, and even rubber.
Software. In order to ensure seamless integration into the workflow on the target company, laser application must have the ability to import are,ai (Adobe Illustrator),,dxf (CorelDRAW, AutoCad), and also,bmp (bitmaps, gradients, process color images) files. To achieve halftone or perhaps dot design, the application should have the ability to use various hatches (or separation anhubg the laser lines) on the picture. For fine line graphics a tiny hatch could be applied, for bold graphics a greater hatch can prevent “scooping”. The electricity and frequency of the laser has to be variable to finely tune the plate level to offer certainly the best printing plate for the kind of ink, production speed and substrate. The target depth of etch in the plate is,001″
System features. The uv ctp plate making machine have a number of available features to consider: Size of system footprint – stand by itself or perhaps benchtop system. Vector-tracing software. Micro-adjust focal distance. Plate registration systems. Particulate evacuation systems. Pre-etch laser pointer. Availability of auto-load.
It can look like somewhat strange that Europe appears to be at the front side of this technology, one normally thinks of Japan or perhaps the Usa for innovation but for once legislation may were a help instead of a hindrance. Europe has improved it’s expectations of business meeting environmental demands in a way that is forcing improvements in your office.
Traditional film making uses chemical substances which are hazardous in use and tough to dispose of, perhaps this has improved the need for earlier film appliances to improve. Many litho printers (us included) will have made use of laser plates at once or another for simple short run one colour jobs, it is easy and quick, printed directly from the computer. The problems are damping issues that make these plates difficult to own these days it’s a possibility to develop good metal plates utilizing inkjet film. Every year the report from DRUPA would be the progress the printing industry is making in CTP.