Patent ID: 8500058

Claim:
A paper roll fixing device of a printer for fixing a paper roll within said printer, said paper roll fixing device comprising: a first supporting base comprising a first inner surface, a first outer surface and a first fixing member, wherein said first fixing member comprises a first fixing slab, a first shaft and a first elastic element, wherein said first fixing slab further comprises a first post, said first shaft and said first elastic element are installed on said first supporting base, and said first fixing slab is pivotally connected with said first shaft, wherein said first elastic element is connected with said first fixing slab, so that said first post of said first fixing slab is not protruded outside said first inner surface; and a second supporting base comprising a second inner surface, a second outer surface and a second fixing member, wherein a space is defined between said first supporting base and said second supporting base for accommodating said paper roll, wherein said second fixing member comprises a second fixing slab, a second shaft and a second elastic element, wherein said second fixing slab further comprises a second post, said second shaft and said second elastic element are installed on said second supporting base, and said second fixing slab is pivotally connected with said second shaft, wherein said second elastic element is connected with said second fixing slab, so that said second post of said second fixing slab is not protruded outside said second inner surface.