These printers use the 1380999 cartridge:
Click On a Printer to View it's Cartridges
          IBM 5223
          IBM 6747
          IBM 6783
          IBM 6784
          IBM 6787
          IBM 6788
          IBM Easystrike
          IBM Personal WheelWriter 2
          IBM System 2000 Model 5216-II
          IBM WheelPrinter E
          IBM WheelPrinter E Model 1
          IBM WheelWriter
          IBM WheelWriter 3
          IBM WheelWriter 5
          IBM WheelWriter 6
          IBM WheelWriter 6 Series II
          IBM WheelWriter 10 Series II
          IBM WheelWriter 15 Series II
          IBM WheelWriter 20
          IBM WheelWriter 25
          IBM WheelWriter 30
          IBM WheelWriter 30 Series II
          IBM WheelWriter 35
          IBM WheelWriter 40
          IBM WheelWriter 50
          IBM WheelWriter 50 Series II
          IBM WheelWriter 70
          IBM WheelWriter 70 Series II
          IBM WheelWriter 1000
          IBM WheelWriter 1500
          IBM WheelWriter 2000
          IBM WheelWriter 2500
          IBM WheelWriter 3000
          IBM WheelWriter 3500
          IBM WheelWriter 5000
          IBM WheelWriter 6783
          IBM WheelWriter 6784
          IBM WheelWriter 6787
          IBM WheelWriter 6788
          IBM WheelWriter 7000
          IBM WheelWriter Series II
          Lexmark Personal WheelWriter II
          Lexmark WheelWriter 15 Series II
          Lexmark WheelWriter 30 Series II
          Lexmark WheelWriter 70 Plus Series II
          Panasonic FX 1800 TS
          Panasonic Jetwriter III
          Panasonic Jetwriter IV
          Panasonic KX E-3000
          Panasonic KX E-3008
          Panasonic KX E-3100
          Panasonic KX E-7000
          Panasonic KX E-7000 CB1
          Panasonic KX E-7000 CB2
          Panasonic KX E-7000 CB3
          Panasonic KX E-7000 CB4
          Panasonic KX E-7000 CB6
          Panasonic KX E-7000 I
          Panasonic KX E-7500
          Panasonic KX E-7500 S
          Panasonic KX E-8000