Production method of an electroacoustic transducer diaphragm, electroacoustic transducer diaphragm, and an electroacoustic transducer

A production method for an electroacoustic transducer diaphragm, comprising:

• a producing step of producing an adhered sheet by adhering a sheet member on a surface of a wooden sheet having a thickness of from 0.01 mm to 1 mm, and the sheet member being made of a material different from the wooden sheet;
• an immersing step of immersing the adhered sheet into one of a solution including 0.01-1 wt % of a penetrating agent and a solution including 0.01-1 wt % of penetrating agent and 0.01-10 wt % of a wetting agent;
• and
• a first hot press molding step of molding an adhered sheet obtained by the immersing step so that the immersed adhered sheet has a predetermined shape of the electroacoustic transducer diaphragm.

An electroacoustic transducer diaphragm, comprising:

• an adhered sheet including a wooden sheet, and a sheet member of a material different from the wooden sheet and provided on a surface of the wooden sheet;
• and
• a constitunent material of a penetrating agent provided in the adhered sheet, the penetrating agent impregnating the adhered sheet when the adhered sheet is immersed into one of a solution including penetrating agent and a solution including the penetrating agent and a wetting agent;
• wherein the adhered sheet is hot press molded into a predetermined shape of an electroacoustic transducer diaphragm.

An electroacoustic transducer diaphragm, comprising:

• an adhered sheet including a wooden sheet, and a sheet member of a material different from the wooden sheet and provided on a surface of the wooden sheet;
• a first constitunent material of a penetrating agent provided in the adhered sheet, the penetrating agent impregnating the adhered sheet when the adhered sheet is immersed into one of a solution including penetrating agent and a solution including the penetrating agent and a wetting agent;
• and
• a second constitunent material of a thermosetting resin provided at least on one surface of the adhered sheet,
• wherein the adhered sheet is formed into a predetermined shape of an electroacoustic transducer diaphragm.

An electroacoustic transducer, comprising:

• an electroacoustic transducer diaphragm including;
• an adhered sheet including a wooden sheet, and a sheet member of a material different from the wooden sheet and provided on a surface of the wooden sheet;
• and
• a constitunent material of a penetrating agent provided in the adhered sheet, the penetrating agent impregnating the adhered sheet when the adhered sheet is immersed into one of a solution including penetrating agent and a solution including the penetrating agent and a wetting agent;
• wherein the adhered sheet is hot press molded into a predetermined shape of an electroacoustic transducer diaphragm.

An electroacoustic transducer, comprising:

• an electroacoustic transducer diaphragm including:
• an adhered sheet including a wooden sheet, and a sheet member of a material different from the wooden sheet and provided on a surface of the wooden sheet;
• a first constitunent material of a penetrating agent provided in the adhered sheet, the penetrating agent impregnating the adhered sheet when the adhered sheet is immersed into one of a solution including penetrating agent and a solution including the penetrating agent and a wetting agent;
• and
• a second constitunent material of a thermosetting resin provided at least on one surface of the adhered sheet,
• wherein the adhered sheet is formed into a predetermined shape of an electroacoustic transducer diaphragm.