Abstract: Thermally imageable compositions, comprising a silver salt of an organic acid, a reducing agent, and, optionally, an activator, coated together in a suitable polymeric binder, can be rendered photoimageable by the addition of a salt of a tetrahydrocarbylborate anion.
Type:
Grant
Filed:
September 2, 1992
Date of Patent:
November 9, 1993
Assignee:
Minnesota Mining and Manufacturing Company