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 – are created only recently. Nonetheless, with newest developments, laser based systems have the potential to conquer pad printing industry over the next couple of years.
CTP benefits: Laser systems allow the end user to transform ctp machine in China to a highest quality etched image in only 1 to 5 minutes. Costs of films, chemicals, consumables shipping, exposure units and removal of hazardous substances are eliminated, as are maintenance contracts on processing equipment and expense of outsourcing steel plate making. Double-sided laser etched plates can accommodate up to four images, which minimizes plate usage.
You’ll find 4 steps to create a plate: import the graphic file into the device ‘s software, apply the halftone design to the image, establish the etch-depth parameter within the laser ‘s operating software, then press start. Laser-imaged graphics are very first generation so there is no loss in resolution.
Etch depth plus halftone pattern can be correctly fine tuned to complement the kind of image you would like to rheology, the viscosity, and print of the ink used, the speed of the printing machine, and the durometer of the printing pads used. As specs can be stored on the computer, resulting photo quality is completely repeatable.
Laser-based CTP systems can accommodate ctp machine laser diodes 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. Nowadays, 3 kinds of lasers are already utilized 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 power to etch a variety of materials.
Maintenance – The diode-pumped YAG features a diode bar which heats up and can warp after aproximatelly 10,000 hours of use, requiring expensive replacement. The Ytterbium fiber and CO2 lasers don’t have any diode bar so they have no maintenance requirements for up to 70,000 hours of operation. Spot size – As the wavelength of your YAG laser (1.064 microns) is ten times smaller compared to the CO2 wavelength (10.64 microns), the former can generate a lot more detailed pictures than CO2. Materials – YAG lasers are ideally suited for metals. A CO2 laser beam is a bit better assimilated by organic substances – wood, textiles, glass, plastics, paper, and rubber.
Application. To ensure seamless integration into the workflow of the target business, laser software program should be able to import are,ai (Adobe Illustrator),,dxf (CorelDRAW, AutoCad), and,bmp (bitmaps, gradients, process-color images) files. To get halftone or perhaps dot pattern, the application must be able to apply different hatches (or even separation anhubg the laser lines) on the image. For good line graphics a small hatch can be applied, for bold graphics a greater hatch may prevent “scooping”. The power and frequency of the optical maser must be variable to finely tune the plate level to offer likely the greatest printing plate for the type of ink, production speed and substrate. The target level of etch in the plate is,001″
System features. The ctcp machine have many available options to consider: Size of system footprint – stand by itself or maybe 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 seem somewhat strange that Europe seems to be at the front of the technology, one usually thinks of Japan or the Usa for innovation but for as soon as legislation could were a help rather than a hindrance. Europe has enhanced it’s expectations of business meeting environmental demands in a manner which is forcing changes in the workplace.
Traditional film making uses chemical compounds which are dangerous in use and difficult to dispose of, maybe this has increased the need for earlier film products to enhance. Many litho printers (us included) would have used laser plates at one time or even another for easy short run one colour jobs, it is easy and quick, printed straight from the computer. The difficulties are damping troubles that make these plates difficult to run these days it’s feasible to develop positive metal plates using inkjet film. Each and every year the report from DRUPA would be the progress the printing business is making in CTP.