Patent ID: 8382108

Claim:
A recording medium overturning mechanism for conveying a recording medium with a front surface and a back surface, comprising: a bracket ( 100 ); an entry ( 50 ) and an exit ( 60 ), arranged in the bracket ( 100 ); a first channel ( 10 ), communicating the entry ( 50 ) with the exit ( 60 ) to convey a recording medium which does not need to be overturned; a second channel ( 20 ), communicating with the entry ( 50 ) to convey a recording medium which needs to be overturned; a third channel ( 30 ), communicating with the exit ( 60 ) and the second channel ( 20 ) to convey the overturned recording medium, wherein the first channel ( 10 ), the second channel ( 20 ) and the third channel ( 30 ) are basically arranged in an inverted triangle and joined with each other; a channel switching mechanism ( 40 ), arranged on the bracket ( 100 ) and located at a joining area between the first channel ( 10 ) and the second channel ( 20 ), for distributing the recording medium which does not need to be overturned into the first channel ( 10 ) or the recording medium which needs to be overturned into the second channel ( 20 ); and an overturning roller ( 70 ), arranged on the bracket ( 100 ) and located at a joining area between the second channel ( 20 ) and the third channel ( 30 ), the overturning roller ( 70 ), driven by a motor, firstly rotates in a first direction to convey the recording medium away from the second channel, and then rotates in a direction opposite to the first direction to send the recording medium into the third channel.