Computer-to-plate (CTP) technology is used on a daily basis in offset, screen-printing workshops, and flexography. As for pad printing business, computer to plate equipment – laser plate-etching systems – are introduced only recently. Nevertheless, with most recent developments, laser-based methods have the potential to master pad printing industry over the new couple of years.
CTP benefits: Laser systems allow the person to convert offset ctp platesetter to a top etched impression in only 1 to five minutes. Costs of films, chemicals, consumables shipping, exposure units and removal of hazardous substances are eliminated, as are maintenance contracts on processing tools and costs of outsourcing steel plate making. Double-sided laser-etched plates are able to accommodate up to four images, which minimizes plate usage.
You’ll find 4 steps to create a plate: import the graphic file into the unit ‘s software, apply the halftone style to the image, specify the etch-depth parameter in the laser ‘s operating software, and then press start. Laser-imaged graphics are first generation so there’s no loss of resolution.
Etch depth and halftone pattern could be correctly fine tuned to match the image type you wish to print, the viscosity and rheology of the ink used, the speed of the printing machine, and the durometer of the printing pads used. As specifications can be kept on the computer, resulting picture quality is completely repeatable.
Laser-based CTP programs can accommodate CTP machine parts for fine, combination fine/bold, and bold graphics. Laser-engraved plates have a straight walled etching and more accurate inkwell than polymer cliches and thick or thin steel plates.
Choosing a CTP system: Laser type. Nowadays, three kinds of lasers have actually 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 units are maintenance, spot size, and ability to etch different materials.
Maintenance – The diode-pumped YAG incorporates a diode bar which heats up allowing it to warp after aproximatelly 10,000 hours of use, requiring expensive replacement. The Ytterbium fiber and CO2 lasers do not have a diode bar so they have 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 10 times smaller compared to the CO2 wavelength (10.64 microns), the former has the ability to create much more detailed graphics than CO2. Materials – YAG lasers are ideally suited for metals. A CO2 laser beam is better assimilated by organic materials – wood, textiles, glass, plastics, paper, as well as rubber.
Application. In order to ensure seamless integration into the workflow of the target business, laser application must be able to import are,ai (Adobe Illustrator),,dxf (CorelDRAW, AutoCad), as well as,bmp (bitmaps, gradients, process color images) files. to be able to achieve halftone or perhaps dot design, the application should be able to use various hatches (or even separation anhubg the laser lines) on the picture. For fine line graphics a tiny hatch could be utilized, for bold graphics a greater hatch can prevent “scooping”. The energy and frequency of the laser beam has to be variable to finely tune the plate level to provide likely the greatest printing plate for the type of ink, production speed and substrate. The target degree of etch in the plate is,001″
System features. The used CTP machine have a number of available features to consider: Size of system footprint – stand alone 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 might appear like a little odd that Europe seems to be at the front side of the technology, one normally thinks of Japan or maybe the Usa for originality but for after legislation could were a help as opposed to a hindrance. Europe has improved it’s expectations of business meeting environmental demands in a way which is forcing improvements in your office.
Traditional film making uses chemical substances which are hazardous in use and hard to dispose of, maybe this has increased the need for earlier film products to enhance. Many litho printers (us included) will have utilized laser plates at one time or even another for easy short run one colour jobs, it is quick and easy, printed straight from the computer. The issues are damping problems which make these plates difficult to own these days it is a possibility to cultivate positive metal plates utilizing inkjet film. Every year the report from DRUPA would be the progress the printing industry is making in CTP.