1. Solves the problem of editing sharpness parameter in standalone mode. In the former version, press ESC button in the layer of edit-sharpness will not retrieve original value but keep modified value instead.
2. Resolves a "Paper Jam" problem. (Paper may stop before printing or during printing because of unstable sensor detection of photo papers.)
3. Improves a "ribbon out" problem which happens when the ribbon is not really finished.