Hi sindhu kadirvel,
I was also looking for answer of this question long back but not found any answer. If you are asking this question because you want to put a clear visual image on your research paper, then i would say that this is not the standard way of representing the schematic because you will see in standard journals the authors are not taking a screenshot rather they are drawing manually at some tool such as Microsoft word or others tools are also there. I am still not clear for what purpose you want to do so.
Regards,
Dhiman