DNP DS-RX1 Guide De Démarrage page 6

After installing the Driver Package, install the printer driver.
⑧
Connect the printer to the PC with USB cable,
and turn on the printer.
When the computer recognizes the printer, it will
display the following screen on the taskbar, and then,
it starts the printer driver installation.
⑩
Check Install Printer
On the Start menu, click "Control Panel". => "View devices and printers".
If there is the Printer icon (DS-RX1) on "devices and printers", the printer is installed correctly.
The printer driver installation is now complete.
Click "View devices and printers".
[DS-RX1] icon
⑨
The Printer Driver installation is complete.
After a while, the following screen is displayed on the
taskbar. The printer driver installation is complete.
If the following screen (The device driver software
was not installed correctly.) is displayed on taskbar,
refer to "1.4 Install Unspecified Device Driver" of
"Printer Driver User's Manual".
[Note]
When the printer (DS-RX1) is not found on "devices and printers",
refer to "1.4 Install Unspecified Device Driver" of "Printer Driver
User's Manual".