Android Tablet / Wifi Printing

I need a Androud Touch frontend that is able to communicate with a special printer by wifi. Device will be a big tablet or a Android based screen like that one: [login to view URL] On the screen we will have a possibility to input a number and press enter. (Like a digital scale in a supermarket) -> Product image and information will be shown plus the corresponding data is sent to to printer direct by wifi immediately See attached image for Wifi Excample protocol. Application will fetsch the data and image for the corresponding product from the local filesystem. (later also from a central db) Whole application has in the corner a language switch. Product description and all lables, field etc will be provided by XML files that hold data in different languages. Usecase description and GUI design will be done my myself and handen to the developer.