Patent ID: 6857171

Claim:
A method for producing a electrode plate for batteries, the method comprising: continuously supplying a core material; irradiating the core material with X-rays, measuring a penetration quantity of the X-rays and obtaining a first weight of the core material per unit area based on the penetration quantity; filling the core material with a given weight of an active material; irradiating with X-rays the core material filled with the active material, measuring a penetration quantity of the X-rays and obtaining a second weight of the core material and the filled active material per unit area based on the penetration quantity; calculating a difference between the second and first weight values to obtain the measured weight of the filled active material; conducting a feedback control of the weight of the active material to be filled into the core material when the measured weight of the filled active material deviates from a permissible range of the given weight said feedback control being conducted on the basis of the deviating weight of the active material; and drying the filled active material.