Loading patent…
AssigneesVictor Company of Japan, Ltd., Tokuyama Sekisui Industry Corporation, Limited
InventorsMutsuaki Nakamura, Kazuhira Namikawa, Toshikazu Goshima, Toshiaki Hamaguchi, Akio Kuroda, Akio Hata, Noriki Fujii
Estimating the term…
A high density information record of the electrostatic capacitance type comprising a record substrate on which signal information is recorded as geometric variations. The record substrate is made of a conductive resin composition comprising a vinyl chloride resin and a conductive powder. The vinyl chloride resin is obtained by suspension polymerization of starting vinyl chloride monomer in an aqueous solution of a water-soluble polymer suspension stabilizer from which insoluble organic matters with sizes over 10 .mu.m have been removed.
A high density information record of the electrostatic capacitance type which comprises a record substrate on which signal information is recorded as geometric variations, said substrate being made of a conductive resin composition comprising a vinyl chloride resin and a conductive powder, the vinyl chloride resin being obtained by suspension polymerization of vinyl chloride monomer in an aqueous solution containing a water-soluble polymer suspension stabilizer from whch insoluble organic matters with sizes over 10 .mu.m have been removed.
Dependencies are inferred from the claim text.