The title of this article is meant to address a common mistake platemakers make when performing both a main exposure and back exposure step test. We see this happen more frequently on main exposure tests because the lamp cycle is much longer than a back exposure step test. With conventional bank light exposure systems, we … Read More...
Tag Archives: exposure
Is there a right or wrong? Our Technical Solutions Group (TSG) always references mW (milliwatts) when referencing lamp intensity, but the product brochures of some plate manufacturers reference exposure times (sec) and joules (mJ/cm2). If you look further down on the brochures you will see these values are based on an assumed lamp intensity, for … Read More...
Our industry experience a huge leap forward when direct imaging of photopolymer platemaking was introduced. Elimination of films and chemistry along with the many other benefits CDI has to offer is arguably the most significant advancement in plate quality over the past 3 decades. One not so good thing about this very positive move to … Read More...
When optimizing a plate material, it can be helpful have an idea of what range of exposure times to test based on UVA lamp intensity. While the method described below will provide a “ballpark” value, all typical plate optimization tests should still be carried out for fine tuning and verification. Reading Manufacturer Documentation Look for … Read More...
Our Technical Solutions Group (TSG) is often contacted by photopolymer platemakers reporting an inconsistent floor. Typically, they measure the lamp output with a UV-A meter and see that the exposure bed is fairly consistent. They don't understand why early in the day things seem to be fine, but as several exposure cycles are performed, the … Read More...