Cartridge case

Abstract

A cartridge case 1 for a magnetic tape cartridge comprises a cartridge case 1 consisting of a lower half 2 and an upper half 3. The lower half 2 is provided with retaining ribs 71 each having a retaining slanted surface 71 a such that a plate-like cartridge memory 7 is positioned on the retaining slanted surfaces 71 a with its one side 7 d lowered and is obliquely supported with respect to a bottom plate 28 of the lower half 2. The upper half 3 is provided with supporting members for supporting various non-resilient constituent parts positioned on the lower half 2 and including the cartridge memory 7. The upper half 2 is provided with a stopper rod 77 such that when the upper half 3 is assembled with the lower half 2, the stopper rod 77 reaches a cartridge memory-rising region before the supporting members contact with the non-resilient constituent parts on the lower half 2.

1 . A method of assembling a cartridge memory in a cartridge case of a magnetic tape cartridge having an upper half, and a lower half with a memory retaining portion projecting from a bottom plate at a first angle thereto, comprising: 
 positioning the cartridge memory on the memory retaining portion of the lower half so that a first end of the plate-shaped cartridge is closer to the bottom plate of the lower half than an opposite second end of the plate-shaped cartridge; and    placing a weight member on the cartridge memory before the upper half is assembled to the lower half.    
     
     
         2 . The method according to  claim 1 , wherein said weight member is nonmetal with a greater specific gravity than that of the plate-shaped cartridge memory.  
     
     
         3 . The method according to  claim 1 , wherein said weight member is made of rubber or ceramic.  
     
     
         4 . The method according to  claim 1 , the lower half further comprising a positioning rib, for positioning the first side of the cartridge memory, projecting from the bottom plate of the lower half along said first side of the cartridge memory, 
 wherein said weight member is wedge-shaped, and is positioned between an upper surface of the cartridge memory, opposite the memory retaining portion, and the positioning rib.    
     
     
         5 . The method according to  claim 1 , wherein said weight member is adhered on the cartridge memory before the cartridge memory is positioned on the lower half.  
     
     
         6 . The method according to  claim 2 , wherein said weight member is adhered on the cartridge memory before the cartridge memory is positioned on the lower half.  
     
     
         7 . The method according to  claim 3 , wherein said weight member is adhered on the cartridge memory before the cartridge memory is positioned on the lower half.  
     
     
         8 . The method according to  claim 4 , wherein said weight member is adhered on the cartridge memory before the cartridge memory is positioned on the lower half.  
     
     
         9 . A magnetic tape cartridge, comprising: 
 a lower half comprising a bottom plate and a memory retaining portion projecting from the bottom plate at a first angle relative thereto;    an upper half;    a plate-shaped cartridge memory arranged on the memory retaining portion so that a first end of the plate-shaped cartridge memory is closer to the bottom plate of the lower half than an opposite second end of the plate-shaped cartridge; and    a weight member shaped to be arranged on the cartridge memory before the lower and upper halves are connected.    
     
     
         10 . The magnetic tape cartridge according to  claim 9 , wherein said weight member is nonmetal with a greater specific gravity than that of the plate-shaped cartridge memory.  
     
     
         11 . The magnetic tape cartridge according to  claim 9 , wherein said weight member is made of rubber or ceramic.  
     
     
         12 . The magnetic tape cartridge according to  claim 9 , the lower half further comprising a positioning rib, for positioning the first side of the cartridge memory, projecting from the bottom plate of the lower half along said first side of the cartridge memory, 
 wherein said weight member is wedge-shaped, and is positioned between an upper surface of the cartridge memory, opposite the memory retaining portion, and the positioning rib.    
     
     
         13 . The magnetic tape cartridge according to  claim 9 , wherein said weight member is adhered on the cartridge memory before the cartridge memory is positioned on the lower half.  
     
     
         14 . The magnetic tape cartridge according to  claim 10 , wherein said weight member is adhered on the cartridge memory before the cartridge memory is positioned on the lower half.  
     
     
         15 . The magnetic tape cartridge according to  claim 11 , wherein said weight member is adhered on the cartridge memory before the cartridge memory is positioned on the lower half.  
     
     
         16 . The magnetic tape cartridge according to  claim 12 , wherein said weight member is adhered on the cartridge memory before the cartridge memory is positioned on the lower half.  
     
     
         17 . A press jig for use in adhesion of a plate-shaped cartridge memory onto a memory retaining portion provided on a bottom plate of a lower half of a magnetic tape cartridge such that the cartridge memory is retained on the memory retaining portion so that a first end of the plate-shaped cartridge is closer to the bottom plate of the lower half than an opposite second end of the plate-shaped cartridge, the press jig pressing the cartridge memory in a direction toward the bottom plate during the adhesion of the cartridge memory onto the memory retaining portion with glue, comprising: 
 a pressing portion for pressing an upper surface of the cartridge memory that is placed on the memory retaining portion; and    a displacement-restriction portion for contacting a lateral side of the first end of the cartridge memory when the pressing portion presses the cartridge memory, to prevent the cartridge memory from displacing downwardly along the memory retaining portion.    
     
     
         18 . A method of assembling a cartridge memory with a lower half, which forms a part of a cartridge case of a magnetic tape cartridge, the cartridge memory including a plate-shaped substrate, and an IC chip placed on a flat portion of the substrate and forming a ridge portion, and the cartridge memory being sucked and picked up while assembling with respect to the lower half, the method comprising the steps of: 
 supplying the cartridge memory with its ridge portion faced upward; and    sucking the cartridge memory at the flat portion.    
     
     
         19 . An assembling device comprising: 
 a suction means for sucking a cartridge memory, the cartridge memory including a plate-shaped substrate on which an IC chip is placed to form a ridge portion and a flat portion, and the cartridge memory being picked up with its flat portion sucked by the suction means; and    a sucking tube of the suction means in the form of a long thin tube such that when the cartridge memory is obliquely assembled with a lower half, which forms a part of a cartridge case of a magnetic tape cart,ridge, the sucking tube does not contact with a reel around which a magnetic tape is wound.    
     
     
         20 . The method according to  claim 1 , wherein the weight member is plate-shaped.  
     
     
         21 . The method according to  claim 1 , wherein the weight member is separate from the cartridge case.  
     
     
         22 . The method according to  claim 4 , wherein the weight member fills the volume between the positioning rib and the upper surface of the cartridge memory.  
     
     
         23 . The magnetic tape cartridge according to  claim 9 , wherein the weight member is plate-shaped.  
     
     
         24 . The magnetic tape cartridge according to  claim 9 , wherein the weight member is separate from the cartridge case.  
     
     
         25 . The magnetic tape cartridge according to  claim 12 , wherein the weight member fills the volume between the positioning rib and the upper surface of the cartridge memory.  
     
     
         26 . A press jig according to  claim 17 , wherein the press jig is wedge-shaped.  
     
     
         27 . A press jig according to  claim 17 , wherein the pressing portion and displacement-restriction portion comprise pairs of rib-shaped strips protruding from a base.