A fixed blade support device includes a biasing member and a fixed blade support member (11). The fixed blade support member (11) includes a base surface portion (11a), an upright surface portion (11b), and a retainer portion (11c). The upright surface portion (11b) extends from the base surface portion (11a) in a biasing direction so as to close a rear side of a root portion of a fixed blade (12) on an opposite side to a blade edge portion thereof, and is configured to prevent the fixed blade (12) from being disengaged in a direction of engagement with a movable blade. The retainer portion (11c) extends from the upright surface portion (11b) so as to cover the root portion of the fixed blade (12), and is configured to prevent the fixed blade (12) from being disengaged in the biasing direction.

A cutter of a printer including a rectangular housing in which a paper feeding roller and a fixed blade are integrally coupled to each other. The cutter includes a movable member corresponding to a plate-shape member having a slot at the center of a body provided at an upper side of the housing corresponding to the fixed blade such that a movable blade at one side is engaged with the fixed blade while being selectively reciprocally moved. The cutter includes a motor within the housing generating a forward or reverse driving force, a gear unit including a driving gear installed in a driving shaft of the motor, a reduction gear engaged with the driving gear and an idle gear engaged with a shaft gear. The cutter includes an eccentric plate coupled to an upper surface of the driven gear for applying external force for reciprocal motion to the movable member.

A variable rake shear comprises a housing (8), a first blade (1) mounted in a first blade mounting (4), a second blade (2) mounted in a second blade mounting (3); and a control device (5) to control movement of one blade mounting to shear the material. Each blade mounting is movable in at least one dimension relative to the housing. One blade is an active blade (1) and the other blade is a passive blade (2). A rake adjustment mechanism (6a, 6b) for at least one of the mountings (3, 4) and the mounting (4) for the active blade (1) has a torque tube linkage mechanism (10, 11, 12).

A variable rake shear comprises a housing (8), a first blade (1) mounted in a first blade mounting (4), a second blade (2) mounted in a second blade mounting (3); and a control device (5) to control movement of one blade mounting to shear the material. Each blade mounting is movable in at least one dimension relative to the housing. One blade is an active blade (1) and the other blade is a passive blade (2). A rake adjustment mechanism (6a, 6b) for at least one of the mountings (3, 4) and the mounting (4) for the active blade (1) has a torque tube linkage mechanism (10, 11, 12).

A cutting machine for cutting window coverings includes a machine base, on which a cutting device and a clamping device are mounted. The cutting device has a cutter. A blade edge of the cutter is oblique to a sustaining face, on which the window covering is rested, of the machine base. It is beneficial to cut a first rail, a covering material, and a second rail of the window covering in sequence. The cutting machine may cut the window covering with a flat cutting facet to have a good cutting quality and also extend the life of the cutter.