To improve the scanning speed when scanning from your machine, check the following points:

Verify that your machine has been added to Brother iPrint&Scan.

To add your machine to Brother iPrint&Scan, follow the steps below.

1. Download and install the Full Driver & Software Package (if not already installed).
   > Click here to download the Full Driver & Software Package in the Downloads section.
    
2. Download and install the Brother iPrint&Scan (if not already installed).
   > Click here to download the Brother iPrint&Scan in the Downloads section.
    
3. When the installation is complete, double-click the Brother iPrint&Scan icon.
4. If your Brother machine is not listed, click the Select your Machine button, and then select your machine from the list of available machines.
5. Click the Machine Scan Settings button to configure the scan settings.
6. Place your document in the Automatic Document Feeder (ADF) or on the scanner glass.
7. Press the Scan button on the machine.

Check the scan resolution.

The resolution may be too high for your document.
To change the resolution, follow the steps below.

1. Double-click the Brother iPrint&Scan icon.
2. Click the Machine Scan Settings button.
3. Select lower resolution from the Resolution drop-down list.
4. Click OK.
5. Place your document in the Automatic Document Feeder (ADF) or on the scanner glass.
6. Press the Scan button on the machine.

Check the USB cable you are using.

Make sure you use a USB 3.0 cable.