Method for processing cylinder periphery, processes for producing development roller and photoconductor drum, and development roller and photoconductor drum

Abstract

To provide a method for processing cylinder peripheries, capable of highly precise, stable transfer; a process for producing a development roller and a photoconductor drum; and the development roller and the photoconductor drum produced by the process. Asperities formed on a die are transferred to a metallic glass film formed on the periphery of a cylindrical column-shaped or cylindrical tube-shaped core of a roller by: heating the metallic glass film to turn into a viscous fluid; and rotating or rolling the roller while the metallic glass film is pressed against the die having the asperities. The metallic glass film is formed by, for example, thermal-spraying a metallic glass in a liquid state onto the periphery of the core.

1 . A method for processing cylinder peripheries characterized in that asperities formed on a die are transferred to a metallic glass film formed on the periphery of a cylindrical column-shaped or cylindrical tube-shaped core of a roller by: heating the metallic glass film to turn into a viscous fluid; and rotating or rolling the roller while the metallic glass film is pressed against the die having the asperities.  
   
   
       2 . The method for processing cylinder peripheries according to  claim 1 , the method includes the step of forming the metallic glass film on the periphery of the core.  
   
   
       3 . The method for processing cylinder peripheries according to  claim 2 , wherein a metallic glass in a liquid form is thermal-sprayed on the periphery of the core, thereby forming the metallic glass film.  
   
   
       4 . The method for processing cylinder peripheries according to  claim 3 , wherein the thermal spraying is performed in an inert gas atmosphere.  
   
   
       5 . The method for processing cylinder peripheries according to  claim 4 , wherein the metallic glass contains at least one group selected from among Zr, Ni, Al, Pd, Mg, Fe, Co, and Ti groups.  
   
   
       6 . The method for processing cylinder peripheries according to  claim 5 , wherein, in the core, at least the periphery thereof comprises a metal or a plastic.  
   
   
       7 . The method for processing cylinder peripheries according to  claim 6 , wherein at least either the core or the die is heated to heat the metallic glass film.  
   
   
       8 . The method form processing cylinder peripheries according to  claim 7 , wherein the heating is performed by using any one of infrared rays, a hater, or a furnace.  
   
   
       9 . The method for processing cylinder peripheries according to  claim 8 , wherein the die is in a plate form, and the asperities on the surface of the die are transferred to the surface of the roller by rotating or rolling the roller while the roller is pressed against the die.  
   
   
       10 . The method for processing cylinder peripheries according to  claim 8 , wherein the die is in a plate form, and the asperities on the surfaces of two dies are transferred to the surface of the roller by rotating or rolling the roller with the roller pinched between the dies.  
   
   
       11 . The method for processing cylinder peripheries according to  claim 8 , wherein the die is in a cylindrical column or cylindrical tube form, and the asperities on the surface of the die are transferred to the surface of the roller by rotating both the roller and the die while the roller is pressed against the die.  
   
   
       12 . The method for processing cylinder peripheries according to  claim 8 , wherein the die is in a cylindrical column or cylindrical tube form, and the asperities on the surfaces of two dies are transferred to the surface of the roller by rotating both the roller and the dies with the roller pinched between the dies.  
   
   
       13 . The method for processing cylinder peripheries according to  claim 8 , wherein the die is in a disk form, and the asperities on the side wall of the die are transferred to the surface of the roller by rotating both the roller and the die while the roller is pressed against the side wall of the die.  
   
   
       14 . The method for processing cylinder peripheries according to  claim 8 , wherein the die is in a disk form, and the asperities on the side walls of two dies are transferred to the surface of the roller by rotating both the roller and the dies with the roller pinched between the side walls of the dies.  
   
   
       15 . A process for producing a development roller, the process including the step of processing the periphery of the development roller by the method for processing cylinder peripheries as set forth in  claim 1 .  
   
   
       16 . A process for producing a photoconductor drum, the process including the step of processing the periphery of the photoconductor drum by the method for processing cylinder peripheries as set forth in  claim 1 .  
   
   
       17 . A development roller produced by the process for producing a development roller as set forth in  claim 15 .  
   
   
       18 . A photoconductor drum produced by the process for producing a photoconductor drum as set forth in  claim 16 .  
   
   
       19 . A development roller comprising: 
 a cylindrical column-shaped or cylindrical tube-shaped core: and    a metallic glass film formed on the periphery of the core, the metallic glass film having asperities on the surface thereof.    
   
   
       20 . A photoconductor drum comprising: 
 a cylindrical column-shaped or cylindrical tube-shaped core: and    a metallic glass film formed on the periphery of the core, the metallic glass film having asperities on the surface thereof.