Do not use the full Toshiba Scanner Utility (it writes deeply into the registry). Instead, use a portable scanning application:
How to make the scanner component work:
Short answer: No.
Toshiba does not officially offer a “portable” driver (i.e., a driver that runs without installation from a USB drive on any PC). toshiba e studio 2303a driver windows 10 portable
The term “portable driver” is often misused online. What people usually mean:
Public workstations are wiped nightly with Deep Freeze or similar. Installing the full Toshiba suite every morning is impossible. A portable driver script that runs at login from a network share ensures the printer works without permanent installation. Do not use the full Toshiba Scanner Utility
Toshiba provides a standard installer (.exe) or inf-based driver for Windows 10 (32-bit & 64-bit).
Key features of the official driver:
Where to get it:
Toshiba’s official support site (search for e-STUDIO2303A). Avoid third-party “portable driver” download sites—they often contain malware.