Coating processes – Electrical product produced – Integrated circuit – printed circuit – or circuit board
Patent
1990-10-12
1991-08-06
Pianalto, Bernard
Coating processes
Electrical product produced
Integrated circuit, printed circuit, or circuit board
204 30, 427171, 427128, 427129, 427130, 427131, 427132, B05D 314
Patent
active
050376691
ABSTRACT:
An electromagnetic article, such as a responder tag for detection by an electronic article surveillance (EAS) system, is fabricated by forming a deposit of a relatively low coercivity high permeability magnetic material on a substrate 22 under the influence of an applied magnetic field so as to provide the deposit with easy and hard axes of magnetization. During deposition the substrate is subjected to a mechanical tension 32 so as to provide the deposit with an inherent benign strain substantially aligned with one of the axes of magnetization. The inherent benign strain is arranged to dominate any detrimental strain to which the responder tag may be subjected during use, enabling detection by the EAS system to be maintained.
Pianalto Bernard
Thorn Emi plc
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