Paper feeding mechanism

A paper feeding mechanism, comprising:

• a feeding path;
• a driving motor controllable to output a driving force towards a forward direction or a driving force towards a reverse direction;
• a bidirectional transmission mechanism including an input gear, two forward swing arms and a reverse swing arm, the input gear being connected with the driving motor for transmitting the driving forces, the two forward swing arms and the reverse swing arm being connected by a connecting element, the two forward swing arms and the reverse swing arm being pivotally connected with the input gear by the connecting element;
• at least one feeding roller mounted in the feeding path, the at least one feeding roller being connected to the bidirectional transmission mechanism;
• a unidirectional transmission mechanism connected to the driving motor for transmitting the driving forces;
• and
• at least one blocking roller mounted in the feeding path, the at least one blocking roller being disposed to a downstream of the at least one feeding roller, the at least one blocking roller being connected to the unidirectional transmission mechanism,
• wherein when the driving motor delivers the driving force towards the reverse direction, the bidirectional transmission mechanism transmits the driving force towards the forward direction to the at least one feeding roller, and the unidirectional transmission mechanism transmits the driving force towards the forward direction to the at least one blocking roller, and
• wherein when the driving motor delivers the driving force towards the forward direction, the bidirectional transmission mechanism transmits the driving force towards the forward direction to the at least one feeding roller, and the unidirectional transmission mechanism stops transmitting the driving force to the at least one blocking roller.

A paper feeding mechanism, comprising:

• a feeding path;
• a driving motor controllable to output a driving force towards a forward direction or a driving force towards a reverse direction;
• a bidirectional transmission mechanism including an input gear, two forward swing arms, a reverse swing arm, a forward gear assembly, a reverse gear assembly and an output gear assembly, the input gear being connected with the driving motor for transmitting the driving forces, the two forward swing arms and the reverse swing arm being connected by a connecting element, the two forward swing arms and the reverse swing arm being pivotally connected with the input gear by the connecting element, the forward gear assembly being mounted to the two forward swing arms to make the forward gear assembly move along with the two forward swing arms, the forward gear assembly and the two forward swing arms being connected with the input gear for transmitting the driving forces, the reverse gear assembly being mounted around the reverse swing arm to make the reverse gear assembly move along with the reverse swing arm, the reverse gear assembly and the reverse swing arm being connected with the input gear for transmitting the driving forces, the output gear assembly being arranged at an intersection area among swinging paths of the two forward swing arms and a swinging path of the reverse swing arm;
• at least one feeding roller mounted in the feeding path, the at least one feeding roller being connected to the bidirectional transmission mechanism, the output gear assembly being connected to the at least one feeding roller;
• a unidirectional transmission mechanism connected to the driving motor for transmitting the driving forces;
• and
• at least one blocking roller mounted in the feeding path, the at least one blocking roller being disposed to a downstream of the at least one feeding roller, the at least one blocking roller being connected to the unidirectional transmission mechanism,
• wherein when the driving motor delivers the driving force towards the reverse direction, the bidirectional transmission mechanism transmits the driving force towards the forward direction to the at least one feeding roller, and the unidirectional transmission mechanism transmits the driving force towards the forward direction to the at least one blocking roller, and
• wherein when the driving motor delivers the driving force towards the forward direction, the bidirectional transmission mechanism transmits the driving force towards the forward direction to the at least one feeding roller, and the unidirectional transmission mechanism stops transmitting the driving force to the at least one blocking roller.