banding effect when etching letters out of a black thermark
Posted: Mon Feb 20, 2012 8:24 pm
Hi, we have a problem with laser etching lettering out of a predominantly black background of thermark spray on brushed stainless steel. We are experiencing a banding effect, across the lettering from left to right there is a tone difference to the area between the lines, ie light and dark. It looks like a brush stroke effect, I would like to know if anybody else has had this and whether it can be overcome. We have tried different speed and heat settings but the effect remains to a lesser or more degree. Could it be a fault with the laser? We have not experienced this with another make of laser on the same application and therefore did not anticipate this with the LS6090.
I hope a fellow laser owner out there can help!
I hope a fellow laser owner out there can help!