Plate-like body manufacturing method and apparatus controlling entry of air bubbles

Abstract

A method of manufacturing a plate-like body formed of first and second members stuck together through liquid includes(a) applying the liquid on a surface of the first member and (b) feeding gas between the first and second members at an instant of initial contact of the liquid with the second member when the second member is superimposed on the first member.

1 . A method of manufacturing a plate-like body formed of first and second members stuck together through liquid, the method comprising: 
 (a) applying the liquid on one of surfaces of the first member; and    (b) feeding gas between the first and second members at an instant of initial contact of the liquid with the second member when the second member is superimposed on the first member.    
     
     
         2 . The method as claimed in  claim 1 , further comprising: 
 (c) changing a state of the second member from a first state where the second member is placed at a given position above and opposite the first member placed substantially horizontally with the one of the surfaces thereof facing upward to a second state where the second member is superimposed on the first member through the liquid,    wherein (b) feeds the gas during a transition period from the first state to the second state in (c).    
     
     
         3 . The method as claimed in  claim 2 , wherein (b) starts to feed the gas before the initial contact of the liquid with the second member during the transition period.  
     
     
         4 . The method as claimed in  claim 2 , wherein (b) feeds the gas constantly during the transition period.  
     
     
         5 . The method as claimed in  claim 2 , wherein (c) makes a given change to a shape of the second member before the second member contacts the liquid.  
     
     
         6 . The method as claimed in  claim 2 , further comprising: 
 (d) electrically neutralizing the first and second members before (c).    
     
     
         7 . The method as claimed in  claim 2 , further comprising: 
 (d) rotating, as a single unit, the first and second members stuck together through the liquid in (c).    
     
     
         8 . The method as claimed in  claim 2 , wherein the liquid is an adhesive agent.  
     
     
         9 . The method as claimed in  claim 8 , further comprising: 
 (d) hardening the adhesive agent by irradiating with ultraviolet rays the first and second members stuck together through the adhesive agent in (c),    wherein the adhesive agent is of an ultraviolet curable type.    
     
     
         10 . The method as claimed in  claim 1 , wherein (a) applies the liquid annularly on the one of the surfaces of the first member.  
     
     
         11 . The method as claimed in  claim 10 , wherein an opening is preformed in a center part of at least one of the first and second members; and (b) feeds the gas through the opening into a space formed between the first and second members inside the annular liquid applied on the one of the surfaces of the first member.  
     
     
         12 . The method as claimed in  claim 10 , wherein (b) feeds the gas to a space formed between the first and second members outside the annular liquid applied on the one of the surfaces of the first member.  
     
     
         13 . The method as claimed in  claim 1 , wherein at least one of pressure, flow, and temperature of the gas is controlled when (b) feeds the gas.  
     
     
         14 . The method as claimed in  claim 1 , wherein the gas is ionized.  
     
     
         15 . The method as claimed in  claim 1 , wherein the first and second members are first and second substrates, respectively; and 
 the plate-like body formed of the stuck first and second members is a recording medium.    
     
     
         16 . The method as claimed in  claim 15 , wherein of the first and second substrates, at least the first substrate is a recording substrate including a recording layer.  
     
     
         17 . The method as claimed in  claim 1 , wherein the plate-like body formed of the stuck first and second members is an optical information recording medium.