This genuine Toshiba T-4530 toner cartridge is a great choice for your e-Studio printer. It is compatible with various models like the 5205L, 255, 305, 355, and 455. The cartridge is designed for laser print technology and comes in black color. It is an original product from Toshiba and is not modified in any way. The California Prop 65 Warning applies to this product as it may contain chemicals that can cause cancer and birth defects. This toner cartridge is perfect for those who want to get high-quality prints and is a great replacement for your old cartridge.