Patent ID: 6431693
Filing Date: 2002-08-13
Classification: B41J

Abstract:
A liquid pressurizing supply apparatus driven in response to an alternating or pulse electric signal, comprising:a high-permeability driving shaft; urging force generation means for urging the driving shaft in one direction; a bobbin case in which the driving shaft is disposed in a cylindrical chamber; a winding coil wound around an outer peripheral surface of the bobbin case; a pair of high-permeability case members in which said bobbin case with the winding coil wound therearound is contained, and a containing recess portion is formed by a sheet metal drawing process; a channel portion connected to the cylindrical chamber of said bobbin case in which said driving shaft is disposed; and at least one back-flow prevention means for preventing back-flow, wherein a portion onto which said driving shaft is pressed by said urging force generation means is a molded smooth surface integrally molded with said bobbin case, a portion of said driving shaft bonded to the molded smooth surface is provided with a seal rubber, and said channel portion is shielded by said molded smooth surface and said seal rubber.