Tokyo stocks were mostly flat Tuesday morning as buying of export-oriented issues on the back of the yen’s weakness against the U.S. dollar was capped amid caution ahead of U.S. inflation data due later in the week. The 225-issue Nikkei Stock Average rose 19.64 points, or 0.05 percent, from Monday to 38,199.10. The broader Topix index was down 1.14 points, or 0.04 percent, at 2,722.94. The dollar rose to the mid-156 yen level in Tokyo on persistent speculation that U.S. interest rates will remain elevated for longer after the New York Federal Reserve said Monday that consumer inflation expecta…