I think your best course is to uninstall this printer comletely and start afresh.
Type 'Control' into Cortana/Search, 'Control panel'should appear in blue, click on this.When the panel opens go to the top right corner and select 'View by :- Small icons' then click on 'Programs and Features'. Give it a moment or two to populate the list of installed software then, one at a time, click on anything that says 'Brother HL1112' then click on 'Uninstall' at the top of the list, this will uninstall the printer. then re-boot.
As suggested, download the install or quick-start guide and the latest drivers. Then follow the instructions in the install/quick-start guide to the letter using the supplied software. You can skip any steps you have already done such as unpacking it and loading ink tanks. Once the printer is installed you can update the software using the latest drivers through 'Device manager'. Finally, go to 'Printers and Devices' in settings and just check that your Brother printer is selcted as the default printer. You should then find that all applications will print through this printer.