Japan's electronic book market gained about ¥10 billion in sales last year to reach ¥57.4 billion and is expected to exceed ¥130 billion in five years, a research company said Thursday.
According to Impress R&D, a Tokyo-based information technology research firm, sales in fiscal 2009 overwhelmingly came from e-books for cell phones — ¥51 billion — while ¥6 billion was spent on content for computers.