Visit https://www.pfu.ricoh.com/global/scanners/fi/dl/
Select Series
Select Scanners
Select target OS
Click Display software list
Look for the WIA Driver under Scanner Drivers or Utilities.
If WIA is not listed, download the TWAIN/WIA combo driver (often a single package).
========
Open Device Manager
Right-click your scanner under "Other devices" or "Imaging Devices"
Select Update driver > Browse my computer for drivers
Point to the folder where you extracted the Ricoh driver.
Finish the installation.
You may also use Windows update to get the driver.