Method for electrodeposition

Abstract

Abstract THERE ARE DESCRIBED NEW METHODS OF COATING A SUBSTATE ADAPTED TO FUNCTION AS AN ANODE WITH AN ELECTRODEPOSITED LAYER IN AN ELECTRODEPOSITION BATH CONTAINING THEREIN AN ELECTRODEPOSITING LIQUID PREPARED BY ADDING AT LEAST ONE OF INORGANIC PIGMENTS, MAGNETIC PARTICLES AND DIELECTRIC PARTICLES, SEMICONDUCTIVE PARTICLES, ORGANIC PIGMENTS, AND THEIR MIXTURE TO AMIONIC SOLUBILISED RESIN FORMED BY DISPERSING PIGMENTS (FOR EXAMPLE, A WATER-SOLUBLE ALKYD RESIN CONTAINING 10 PERCENT OF SOLIDS), IN WHICH ELECTRIC POTENTIALS OF BOTH ELECTRODES OF THE ELECTRODEPOSITION BATH ARE MADE EQUAL TO EACH OTHER PRIOR TO THE APPLICATION OF AN ELECTRIC VOLTAGE ACROSS THEN BY MAINTAINING ELECTRIC POTENTIAL OF THE SUBSTRATE AT A VALUE LOWER THAN THAT OF THE ELECTRODEPOSITING LIQUID OR BY SHORT-CIRCULATING SAID BOTH ELECTRODES THEREBY TO DISCHARGE THE ELECTRIC CHARGE STORED IN SAID ELECTRODEPOSING LIQUID, WHEREBY FORMATION OF UNIFORM ELECTRODEPOSITED LAYER ON THE SUBSTRATE CAN BE MADE POSSIBLE A CONSTANT INITIAL CONDITION OF THE ELECTRODEPOSITION. FURTHERMORE, APPARATUSES ADAPTED TO CARRY OUT THE ABOVE-MENTIONED METHODS ARE DISCLOSED.

Inventors

• 👤 A Matsushita
• 👤 R Fukushima

Bibliographic Details