H - Electricity – 05 – B
Patent
H - Electricity
05
B
315/17, 117/65
H05B 43/02 (2006.01) G03B 15/02 (2006.01)
Patent
CA 1174725
ABSTRACT OF THE DISCLOSURE A modified conductive ink is provided for a photoflash array having a plurality of high voltage flash lamps connected to a lamp firing circuit pattern deposited on a circuit board with radiation-sensitive switches and fuse elements being connected in said circuit pattern for sequential firing of said flash lamps, said fuse elements being provided by narrowing the width of the circuit pattern at the fuse locations and undergoing thermal decomposition activated with radiation, wherein the improvement comprises a modified carbon ink containing a particulated electrically conductive material such as conductive powdered carbon incorporated therein. Increased electrical conductivity is provided at the fuse locations before thermal decomposition of the fuse elements takes place together with increased residual electrical resistance being provided by the thermally decomposed fused elements.
394671
Collins Edward J.
Suster Mary E.
Company General Electric
Eckersley Raymond A.
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