Question about Brother Mfc-L2730dw

Hello Esap
- The machine has a flatbed scanner (glass surface) that can scan documents, books etc. up to a size of A4. So, as you described, you can put a booklet larger than A4 on it and start a scan. This gives you a section of the booklet.
- I use "Adobe Acrobat Reader" to display and print out pdf documents. The printout can be enlarged and reduced. In addition, the printout can also be enlarged or reduced in the Brother printer driver (after installing the complete software driver package - not Windows driver!). As you can see, your wish does not depend on the device, but on the software.
Greetings

No, the size of the scanner depends on the top glass (A4)