Patent ID: 8153207

Claim:
A method for manufacturing a fine particle-containing body which comprises a first layer, a second layer, a medium that is formed between the first layer and the second layer and that is made of silicon oxide, a plurality of silver particles that are located in the medium and have a function to retain an electric charge, and a coating layer that covers each of the silver particles and is made of a material whose electrical conductivity is lower than that of silver, said method comprising: forming the medium in contact with the first layer; introducing silver for forming the silver particles by ion implantation so as to be distributed in the medium; forming the silver particles in the medium by condensing or diffusing the silver introduced into the medium by heat treatment; oxidizing or nitriding a surface portion of each of the silver particles so as to form the coating layer; and forming the second layer on a side of the medium opposite to a side of the first layer, wherein said silver particles have a diameter of less than 1 μm, and wherein the method comprises removing a portion containing said silver or said silver particles from a surface of the medium to a prescribed depth within a period on or after the ion implantation and before the forming of the coating layer.