Magnetic tape drive

Abstract

A magnetic tape drive is equipped with a travel device for running a magnetic tape and a plurality of guides for guiding the magnetic tape, which is running, along a predetermined route. Each of the guides has a roller portion and a flange portion. A surface hardening treatment is dispensed to a guide out of the guides where a ratio of a peripheral speed of the guide for a running speed of the magnetic tape is not more than 0.9.

1 . A magnetic tape drive comprising: 
 a travel device for running a magnetic tape; and    a plurality of guides for guiding said magnetic tape, which is running, along a predetermined route,    wherein each of said guides comprises a roller portion and a flange portion,    wherein a surface hardening treatment is dispensed to a guide out of said guides, and    wherein a ratio of a peripheral speed of the guide for a running speed of said magnetic tape is not more than 0.9.    
     
     
         2 . A magnetic tape drive according to  claim 1 , wherein a wrap angle of said magnetic tape is not more than 90 degrees in a guide, and wherein said ratio of a peripheral speed of the guide is not more than 0.9.  
     
     
         3 . A magnetic tape drive according to  claim 1 , wherein a surface hardening treatment is dispensed to all surface of each of said guides.  
     
     
         4 . A magnetic tape drive according to  claim 2 , wherein a surface hardening treatment is dispensed to all surface of each of said guides.  
     
     
         5 . A magnetic tape drive according to  claim 1 , wherein a surface hardening treatment is dispensed to nothing but an inner surface of a flange portion arising from a periphery of a roller portion of each of said guides.  
     
     
         6 . A magnetic tape drive according to  claim 2 , wherein a surface hardening treatment is dispensed to nothing but an inner surface of a flange portion arising from a periphery of a roller portion of each of said guides.  
     
     
         7 . A magnetic tape drive according to  claim 1 , wherein a roller portion and flange portion of each of said guides is configured of different members and said flange portion is joined to said roller portion, and wherein a surface hardening treatment is dispensed to the flange portion.  
     
     
         8 . A magnetic tape drive according to  claim 2 , wherein a roller portion and flange portion of each of said guides is configured of different members and said flange portion is joined to said roller portion, and wherein a surface hardening treatment is dispensed to the flange portion.  
     
     
         9 . A magnetic tape drive according to  claim 1 , wherein a material of a hardened layer formed on said guides by said surface hardening treatment is any of titan nitride, chromium nitride, titan aluminum nitride, tungsten carbide-cobalt, and diamond-like carbon.  
     
     
         10 . A magnetic tape drive according to  claim 2 , wherein a material of a hardened layer formed on said guides by said surface hardening treatment is any of titan nitride, chromium nitride, titan aluminum nitride, tungsten carbide-cobalt, and diamond-like carbon.  
     
     
         11 . A magnetic tape drive according to  claim 3 , wherein a material of a hardened layer formed on said guides by said surface hardening treatment is any of titan nitride, chromium nitride, titan aluminum nitride, tungsten carbide-cobalt, and diamond-like carbon.  
     
     
         12 . A magnetic tape drive according to  claim 4 , wherein a material of a hardened layer formed on said guides by said surface hardening treatment is any of titan nitride, chromium nitride, titan aluminum nitride, tungsten carbide-cobalt, and diamond-like carbon.  
     
     
         13 . A magnetic tape drive according to  claim 5 , wherein a material of a hardened layer formed on said guides by said surface hardening treatment is any of titan nitride, chromium nitride, titan aluminum nitride, tungsten carbide-cobalt, and diamond-like carbon.  
     
     
         14 . A magnetic tape drive according to  claim 6 , wherein a material of a hardened layer formed on said guides by said surface hardening treatment is any of titan nitride, chromium nitride, titan aluminum nitride, tungsten carbide-cobalt, and diamond-like carbon.  
     
     
         15 . A magnetic tape drive according to  claim 7 , wherein a material of a hardened layer formed on said guides by said surface hardening treatment is any of titan nitride, chromium nitride, titan aluminum nitride, tungsten carbide-cobalt, and diamond-like carbon.  
     
     
         16 . A magnetic tape drive according to  claim 8 , wherein a material of a hardened layer formed on said guides by said surface hardening treatment is any of titan nitride, chromium nitride, titan aluminum nitride, tungsten carbide-cobalt, and diamond-like carbon.