Chrome Roller Defect
Chrome Roller Defect
(OP)
I am currently working on a project for detecting and measuring “Gloss Bands” in chrome plated machine rolls. These “Gloss Bands” are essential a visual defect that is transferred onto the product. When viewing in certain lighting/angles, the surface appearance of the roll shows variation.
Any explanation for this? Appears the difference is undetectable by Gloss meter, leading me to believe the term “Gloss Bands” may be a misnomer.
Thanks.
Any explanation for this? Appears the difference is undetectable by Gloss meter, leading me to believe the term “Gloss Bands” may be a misnomer.
Thanks.
Talk To Other Members
RE: Chrome Roller Defect
If so, they are not very good at detecting small variations. The eye is much better at that. What the meter is good at is to produce a measurement. But its resolution (ability to detect small variation) is crude. You may need to use a device that uses one or several angles to detect scattered light. And you will need as much light input as you can get from an LED. A collimator lens also usually does a lot good.
Gunnar Englund
www.gke.org
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