How to install scanner brother dcp-7030 on ubuntu

When I try to follow the instructions here: Scanner driver 64bit (deb package)

I get this error when I run this command in 3:

dpkg -i --force-all   brscan3-0.2.13-1.amd64.deb

Error:

error: required read/write access to the dpkg database directory /var/lib/dpkg

How do I resolve this issue? This is fresh install of Ubuntu 20.04 I think. I have no idea what this means and I am a linux newbie. All I need is a button on desktop to scan a document from the scanner, which is Brother dcp-7030.

Solution 1:

What worked for me on Ubuuntu 20.04 was:

download driver ("Scanner Setting file" not needed) https://support.brother.com/g/b/downloadlist.aspx?c=de&lang=de&prod=dcp7030_all&os=128&flang=English

Install driver

sudo dpkg -i brscan3-0.2.13-1.amd64.deb

Put user in group scanner

sudo usermod -aG scanner $USER

setup sane

sudo /usr/local/Brother/sane/setupSaneScan3 -i

copy sane-files

sudo ln -sf /usr/lib64/sane/libsane-brother* /usr/lib/x86_64-linux-gnu/sane

and

sudo nano /lib/udev/rules.d/60-libsane.rules 

there add

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

and in

sudo nano /etc/sane.d/brother.conf

add

# Brother USB
# For libusb support for unknown scanners use the following command
# usb <vendor ID> <product ID>
usb 04f9 01eb