Patent ID: 8678689

Claim:
A printer with a cutter for cutting a recording sheet after printing is performed on the recording sheet, the printer comprising: a main unit having a main frame supporting one of a recording head and a platen roller, a movable blade mounted to undergo sliding movement, and a movable blade motor for driving the movable blade; and a detachable unit combined with the main unit so as to be attachable and detachable from the main unit, the detachable unit supporting the other of the recording head and the platen roller and a fixed blade for cutting the recording sheet while sandwiching the recording sheet together with the movable blade when the movable blade undergoes sliding movement; wherein the main unit comprises: a movable blade holder for holding the movable blade; a reciprocating mechanism for causing the movable blade holder to linearly reciprocate along with rotation of a drive gear coupled to the movable blade motor; a biasing member for biasing the movable blade through the movable blade holder in a direction of separating the movable blade from the fixed blade; and a gear train mechanism for coupling the drive gear and the reciprocating mechanism to each other to transmit a rotational force of the drive gear to the reciprocating mechanism when the detachable unit is attached to the main unit, and for disconnecting the drive gear and the reciprocating mechanism from each other when the detachable unit is detached from the main unit; and wherein the detachable unit is configured to move close to and away from the main unit along a sliding direction of the movable blade when the detachable unit is attached to and detached from the main unit.