Method of producing an elastic plate for an ink jet recording head

Abstract

A plate member constituting a channel unit of an ink jet recording head has a metal plate which is produced by rolling an etchable material, and a polymer film which is laminated onto one face of the metal plate. The long side is perpendicular to the rolling direction of the metal plate. Warpage which easily occurs in the longitudinal direction is suppressed by the rigidity which is large in a direction perpendicular to the rolling direction.

1 . A method of producing an elastic plate for a liquid jet head, comprising the steps of: 
 laminating and bonding a polymer film which has under gone an annealing process, and a rolled metal plate to form a base member; and    etching said rolled metal plate based on a rolling direction of said rolled metal plate being perpendicular to a long side of an elastic plate, thereby a forming a through hole serving as an elastically deformable region.    
   
   
       2 . A method of producing an elastic plate for a liquid jet head, comprising: 
 (a) laminating one of a polymer film and an elastic metal plate on a rolled metal plate; and    (b) etching said rolled metal plate based on a rolling direction of said rolled metal plate to form a through hole serving as an elastically deformable region,    wherein said rolling direction is perpendicular to a long side of said elastic plate.    
   
   
       3 . The method as claimed in  claim 2 , wherein operation (a) comprises laminating said polymer film on said rolled metal plate.  
   
   
       4 . The method as claimed in  claim 2 , wherein operation (a) comprises laminating said elastic metal plate on said rolled metal plate.  
   
   
       5 . The method as claimed in  claim 2 , wherein operation (b) is performed after operation (a).  
   
   
       6 . The method as claimed in  claim 2 , wherein operation (a) comprises: 
 (a1) performing an annealing process on the polymer film;    (a2) subsequently laminating said polymer film on said rolled metal plate; and    (a3) subsequently bonding said polymer film to said rolled metal plate via a heating process.    
   
   
       7 . The method as claimed in  claim 4 , wherein operation (a) further comprises bonding said elastic metal plate to said rolled metal plate via an adhesive layer having an etching resistance.  
   
   
       8 . A method of producing an elastic plate for a liquid jet head, comprising: 
 (a) laminating one of a polymer film and an elastic metal plate on a rolled metal plate;    (b) etching said rolled metal plate based on a rolling direction of said rolled metal to form a plurality of elastically deformable regions,    wherein said rolling direction is perpendicular to a long side of said elastic plate.    
   
   
       9 . The method as claimed in  claim 8 , wherein the elastically deformable regions are arrayed perpendicularly to the rolling direction.  
   
   
       10 . The method as claimed in  claim 8 , wherein the elastically deformable regions are arrayed parallel to the rolling direction.