
TTP-248M  Bar Code Printer
Service Manual
2.3 Ribbon Specification
Item  | Specification | 
  | 
  | 
Ribbon Shape  | Spool type  | 
  | 
  | 
Ribbon Width  | 25.4~114.3 mm  | 
  | 
  | 
Ribbon Length  | 450 m  | 
  | 
  | 
Diameter  | Less than 3.5” ( 89 mm)  | 
  | 
  | 
Roll Up Method  | Print surface wound outside as standard.  | 
  | 
  | 
Note: The maximum length of ribbon depends on its thickness and core outside diameter.
The formula below defines the correlation between ribbon roll length and ribbon core diameter.
L =  | (D2  | − d2 ) × π  | where  | 
  | 4t  | ||
  | 
  | ,  | |
  | 
  | 
  | 
L = Ribbon length
D = Max. roll diameter
d = Ribbon core outside diameter t = Ribbon thickness
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