| 摘要 |
PURPOSE: To constitute easily and inexpensively an electrode which is high in reliability and reproducibility and is effectively actuated, by cleaning an acting electrode formed by applying electrode carbon ink to a substrate with gaseous plasma, and thereafter, depositing a reagent layer on the electrode. CONSTITUTION: In a plurality of current measuring electrodes 12 mounted on a sensor card 10, for example, electrode carbon ink is screen-printed on a polymer substrate 18, followed by thermal drying, thereby forming an acting electrode 16. Subsequently, the substrate 18 is put into a gaseous plasma cleaner using oxygen or nitrogen, where gaseous plasma is excited based on a high frequency signal for a short exposure time of about 10-30 seconds, thus cleaning the electrode, on which a reagent layer 20 is deposited. The substrate 18 is made of a thermoplastic material, having sufficient physical properties and an electric insulating characteristic, e.g. polycarbonate or polystyrene. Furthermore, the electric carbon ink may include 18% of graphite and 6% of carbon black. |
