JP2007269009A5 - - Google Patents

Claims (9)

Driving the liquid discharge energy generating element for generating energy used for discharging liquid, and a liquid discharge port for discharging liquid, a liquid flow path communicating with the liquid discharge port, the liquid discharge energy generating elements and an electric circuit for, there in the first electrode pad, manufacturing method of a liquid discharge head that having a second electrode pad, for testing the electric circuit for exchanging with the outside electric signal And
A first step of preparing a substrate on which a first wiring layer that is a part of the first electrode pad and a second wiring layer that is the second electrode pad are formed ;
On the second wiring layer, and a second step of forming a protective layer covering the front Stories second wiring layer,
A third step of forming a metal film on the surface of the first wiring layer by electroless plating to form the first electrode pad ;
A fourth step of removing the protective layer after the third step ;
A fifth step of providing a layer made of a resin covering the second wiring layer on the second wiring layer after the fourth step;
A method of manufacturing a liquid discharge head having Said fifth after step, further liquid discharge head according to claim 1, the flow path wall forming member is a member forming a wall of the liquid flow path and performing a sixth step of forming on said substrate Manufacturing method. The method for manufacturing a liquid discharge head according to claim 2, wherein the resin layer is used as an adhesion layer between the substrate and the flow path wall forming member. A layer made of the resin, the manufacturing method of the liquid discharge head according to any of claims 1 to 3, characterized in that it consists of thermoplastic polyetheramide resin. 5. The method of manufacturing a liquid discharge head according to claim 1, wherein each of the first wiring layer and the second wiring layer is made of aluminum or an aluminum alloy. The metal film, the the first wiring layer, electroless nickel-phosphorous layer, claims 1 to an electroless substitution gold layer and electroless reduced gold layer and forming provided in this order 6. A method for producing a liquid discharge head according to any one of 5 above. Prior Symbol protective layer, the manufacturing method of the liquid discharge head according to any of claims 1 to 6, characterized in that it is formed by screen printing. The protective layer, the manufacturing method of the liquid discharge head according to any of claims 1 to 7, characterized in that it is provided with the exception of the portion forming the metal film. Driving the liquid discharge energy generating element for generating energy used for discharging liquid, and a liquid discharge port for discharging liquid, a liquid flow path communicating with the liquid discharge port, the liquid discharge energy generating elements and an electric circuit for, a liquid discharge head have a,
A first electrode pad for exchanging electrical signals with the outside, formed by providing a first wiring layer , an electroless nickel / phosphorous layer, an electroless displacement gold layer and an electroless reduced gold layer in this order ;
A second electrode pad for testing the electrical circuit formed of a second wiring layer ;
A flow path wall forming member for forming the liquid flow path, which is formed on the second wiring layer via an adhesive layer made of a resin ;
Including a liquid discharge head.