|
|
|
| |
| |
|
|
|
One of the first applications of violet laser diodes was Computer-to-Plate printing, also known as CtP printing or prepress. The reasons are plain to see: The short wavelength of 405 nm could either be exploited to decrease the minimum spot diameter for imaging (resulting in higher resolution) or alternatively to shrink the focusing lens diameter and subsequently operate at higher scanning speeds.
Furthermore, most of the old-fashioned “green” plates required dark light handling in order to avoid unwanted exposure. Obviously, colors cannot be perceived well under such conditions. On the contrary, violet plates can be operated and handled under yellow light which enables the operator to distinguish contrasts on the plate more precisely.
As for the financial aspects, violet CtP outperforms its green counterpart by far: Refurbishment of a laser system is much cheaper as the only component exchanged is the diode itself - after more than 10.000 hours of operation. Green lasers typically require an external modulator (i.e. Q-switch) whereas violet diodes can be modulated directly. TOPTICA’s iPulse achieves a pulse repetition rate of 200 MHz and more, resulting in a high throughput of your plate-setter.
Both beam quality and power stability meet high requirements, providing excellent images on the plate, combined with high reproducibility. As diode technology further matures, the available output power will soon exceed the 100 mW level. This will shorten the duration for imaging a single dot and enhance your throughput of plates accordingly.
For suitable lasers for CtP printing go to iPulse.
|
|
|
|
|
|
|
| Downloads |
| Application Notes |
|
|
|
|
| Contact |
| |
|
TOPTICA Photonics AG
Lochhamer Schlag 19
82166 Graefelfing (Munich)
Germany
T +49 89 85837-0
F +49 89 85837-200
TOPTICA Photonics Inc.
1286 Blossom Drive
Victor, NY 14564
USA
T 585.657.6663
F 877.277.9897
 sales@toptica.com
|
| |
|
|
|
|
