Toshiba Tec just spent $870M USD to buy IBM's Point of Sale division so I can only suspect they are financially and mentally "tapped out" to take on another big acquisition.
Toshiba Tec does relabel a Sharp low end copier known as an e203SD so there is some business relationship there.
I believe in the last 12 months Toshiba discontinued manufacturing LCD TV panels and began to source them from Sharp.