Hello Sir,
I have read your requirement and I can provide you perfect solution for this.
Let me introduce myself, I am Angel (skype:project4angel) working as freelancer as Android and iOS. You can see some of my previous projects and review in my portfolio.
Sir, I would like to share that, I did work on this kind of this many times, even one of my running project: https://www.freelancer.com/projects/iPhone-Android/Android-iOS-App-for-Web.html
In that, there is printer used (Sending order to print in Kitchen using STAR printer SDK).
Sir, Here I would like to discuss some points before we go further. Let me know suitable time for you to discuss.
Regards,
Angel.