Force browser to use only mobile data regardless of WiFi is connected? Is it possible to force any Android internet browser to use only mobile data regardless of whether WiFi is connected or not?

My situation: I have a tablet with Android 5.0.1 and mobile data enabled. I have also a little mobile printer - Canon Pixma IP110. I have to travel and print invoices for my customers anywhere. I am connecting to the printer's access point (the internet is not available of course) but I need to keep the web application open where I print the invoices from, that's why I need force my browser to use only mobile data and not use the printer's access point.
Simply NO

Because it is not a feature comes with the browser.

It is a general feature. 

When the device is connected to Wi-Fi, the device automatically disconnect from mobile data even if the data is turned on