This may be an anti tarnish compound. Many anti tarnish compounds contain
amines that form very strong bonds to copper and often act as a base for
adhering other materials. They are commonly used in photoresist
compositions to enhance adhesion. Toner may (note I said may) actually
stick better to an amine treated surface. Amines are readily removed in
acidic etching systems so they shouldn't cause any problems in later
processing steps.
amines that form very strong bonds to copper and often act as a base for
adhering other materials. They are commonly used in photoresist
compositions to enhance adhesion. Toner may (note I said may) actually
stick better to an amine treated surface. Amines are readily removed in
acidic etching systems so they shouldn't cause any problems in later
processing steps.