| 摘要 |
PROBLEM TO BE SOLVED: To provide a fan-shaped member, a cover member, and a notebook capable of preventing the content from being fully exposed to people on the opposite side even when the cover member and the notebook are unfolded.SOLUTION: A cover member 2 includes: a planar front cover 5; and a planar back cover 6 that is openably and closably connected to the front cover 5 centering on an axial line C that is substantially parallel to one side 5A of the front cover 5; and a fan-shaped member 9 having a fan surface part 8 in which a linear mountain fold 8A and a valley fold 8B are alternatively arranged. One end 8C of the fan surface part 8 that is substantially parallel to the mountain fold 8A and the valley fold 8B is connected with an inner end 5B of the front cover 5 opposing to the back cover 6 to be perpendicular to the one side 5A when the front cover 5 and the back cover 6 are closed. The other end 8D of the fan surface part 8 that is substantially parallel to the mountain fold 8A and the valley fold 8B is connected to the inside of the back cover 6 opposing to the inner end 5B of the front cover 5 to be perpendicular to the one side 5A. |
