Voltage regulator circuitry is provided that produces a stable programming-voltage on a programmable integrated circuit. A surface of liquid mercury is coated with a continuous film made of metal oxide or metal complex oxide by dipping the mercury in a metal alkoxide solution and then heating the mercury on which the metal alkoxide solution adheres. The charging system also includes a power cord for inputting and outputting the standard DC voltage. The exchange-coupled structure may be located either below or above the nonmagnetic spacer layer in the magnetoresistive device. The pattern extends at least partially on each of said zones so that the pattern comprises adjacent parts of different color in perfect register apparent through said opaque layer. The thermal transfer image-receiving sheet comprises: a substrate sheet; and a receptive layer provided on the substrate sheet, the receptive layer comprising a metal source, a protective layer bondingholding agent, and a binder resin.