1. Install the next packages
sudo apt-get install -y sane-utils psutils csh xsane
… and ia32-libs if needed for 64-bit system.

2. Download and install the next packages using Gdebi
dcp7055lpr-2.1.0-1.i386.deb

cupswrapperDCP7055-2.0.4-2.i386.deb

brscan4-0.4.3-0.i386.deb for 32-bit system

.. or

brscan4-0.4.3-0.amd64.deb for 64-bit system

3. for a scanner add (sudo nano /lib/udev/rules.d/40-libsane.rules )the next line to the /lib/udev/rules.d/40-libsane.rules file after LABEL="libsane_usb_rules_begin”.

In Mint 19 the command is
sudo nano /lib/udev/rules.d/60-libsane1.rules

# Brother scanners
ATTRS{idVendor}=="04f9", ATTRS{idProduct}=="0248", MODE="0660", GROUP="scanner", ENV{libsane_matched}="yes"

Save, quit and reboot computer.

Open printers and scanners and select Brother DCP7055 for cups instead of recommended model.