Ion sensor
First Claim
Patent Images
1. An ion sensor comprising:
- a printed board on which a plurality of conductive wires about 0.1 mm in width are closely printed;
a plurality of sintered carbon layers each formed on one of said conductive wires, said sintered carbon layers being made by applying and sintering a carbon-containing paste including carbon particles in thermosetting resin binder; and
a plurality of redox layer made by an electrolytic oxidative polymerization process each coating one of the sintered carbon layers and exhibiting a redox function.
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Abstract
A portion of a board (1) on which copper wiring is printed is provided with a carbon coating, the board (1) and lead wires (2) are joined by solder (3), the portion having the solder (3) is insulated with a silicone resin (4), and the carbon-coated printed wiring portion (10a) is successively coated with a redox layer (11) obtained by electro-oxidation of 2,6 xylenol and an ion-selective layer (12), thereby forming an ion sensor (20).
Since the ion sensor can be formed on a printed wiring board, various devices which include an ion sensor can readily be fabricated on a board.
13 Citations
5 Claims
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1. An ion sensor comprising:
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a printed board on which a plurality of conductive wires about 0.1 mm in width are closely printed; a plurality of sintered carbon layers each formed on one of said conductive wires, said sintered carbon layers being made by applying and sintering a carbon-containing paste including carbon particles in thermosetting resin binder; and a plurality of redox layer made by an electrolytic oxidative polymerization process each coating one of the sintered carbon layers and exhibiting a redox function. - View Dependent Claims (2, 3)
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4. An ion sensor comprising:
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a printed board on which a plurality of conductive wires about 0.1 mm in width are closely printed; a sintered carbon layer formed on one of said conductive wires, said sintered carbon layer being made by applying and sintering a carbon-containing paste including carbon particles in thermosetting resin binder; a redox layer made by an electrolytic oxidative polymerization process coating said sintered carbon layer and exhibiting a redox function; and a reference electrode, a common electrode, a thermistor or a combination thereof formed on said conductive wires adjacent to said one of conductive wires on which said sintered carbon layer and redox layer are formed. - View Dependent Claims (5)
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Specification