These printers use the T-3520 cartridge:
Click On a Printer to View it's Cartridges
          Toshiba e STUDIO 350
          Toshiba e STUDIO 352
          Toshiba e STUDIO 353
          Toshiba e STUDIO 450
          Toshiba e STUDIO 452
          Toshiba e STUDIO 453
          Toshiba ES 350
          Toshiba ES 352
          Toshiba ES 450
          Toshiba ES 452
          Sharp e Studio 352