Method for producing a conductive film

Abstract

A method for producing a conductive film, having the steps: forming, on a support, a conductive metal portion containing a conductive material and a binder; bringing the conductive metal portion into contact with vapor or a hot water; and immersing the conductive metal portion into hot water having a temperature of 40° C. or higher.

1 . A method for producing a conductive film, comprising the steps of:
 forming, on a support, a conductive metal portion containing a conductive material and a water-soluble binder; and   immersing the conductive metal portion into hot water having a temperature of 40° C. or higher.   
     
     
         2 . The method for producing a conductive film according to  claim 1 , wherein the temperature of the hot water is 60° C. or higher. 
     
     
         3 . The method for producing a conductive film according to  claim 1 , wherein a temperature of the hot water is 80° C. or higher. 
     
     
         4 . The method for producing a conductive film according to  claim 1 , wherein a pH of the hot water is from 2 to 13. 
     
     
         5 . The method for producing a conductive film according to  claim 1 , wherein a period for the immersion into the hot water or a period for contact with the vapor is 5 minutes or less. 
     
     
         6 . The method for producing a conductive film according to  claim 1 , wherein the binder is a water-soluble polymer. 
     
     
         7 . The method for producing a conductive film according to  claim 1 , comprising a step of subjecting the conductive metal portion to smoothing treatment before the step of contacting with vapor or the step of immersing into hot water. 
     
     
         8 . The method for producing a conductive film according to  claim 7 , wherein the smoothing treatment is conducted at a linear pressure of 1,960 N/cm (200 kgf/cm) or more. 
     
     
         9 . The method for producing a conductive film according to  claim 7 , wherein the smoothing treatment is conducted at a linear pressure of 2,940 N/cm (300 kgf/cm) or more. 
     
     
         10 . The method for producing a conductive film according to  claim 7 , wherein the smoothing treatment is conducted at a linear pressure of 6,860 N/cm (700 kgf/cm) or less. 
     
     
         11 . The method for producing a conductive film according to  claim 5 , including a washing step of washing the conductive metal portion with water after the vapor contacting step. 
     
     
         12 . A method for producing a conductive film, comprising the steps of:
 exposing a photosensitive material having a photosensitive layer containing a photosensitive silver salt and a water-soluble binder on a support to light, and then developing the resultant, thereby forming a conductive metal silver portion on the support; and   immersing the conductive metal silver portion into hot water having a temperature of 40° C. or higher.