Cutter device for a printer
AssigneeSII P & S Inc.
InventorSaburou Imai
Life of this patent
Estimating the term…
Abstract
A cutter device has a movable blade, a stationary blade, and a clutch mechanism having a driven gear mounted for undergoing rotation in clockwise and counterclockwise directions and a driving gear for rotationally driving the driven gear about a rotational axis. A cutter drive mechanism has a rotation device connected to the clutch mechanism so that through one complete rotation of the driven gear the rotation device reciprocally moves the movable blade between a first region in which the movable blade is spaced apart from the stationary blade and a second region in which the movable blade cooperates with the stationary blade to cut recording paper. A rotation regulating device regulates rotation of the driven gear in the counterclockwise direction when the movable blade is in the first position.
Claims15
A cutter device for cutting recording paper, the cutter device comprising:
- a movable blade;
- a stationary blade;
- a clutch mechanism having a driven gear mounted for undergoing rotation in clockwise and counterclockwise directions and a driving gear for rotationally driving the driven gear about a rotational axis;
- a cutter drive mechanism having a rotation device connected to the clutch mechanism so that through one complete rotation of the driven gear the rotation device reciprocally moves the movable blade between a first region in which the movable blade is spaced apart from the stationary blade and a second region in which the movable blade cooperates with the stationary blade to cut recording paper;
- and
- rotation regulating means for regulating rotation of the driven gear in the counterclockwise direction when the movable blade is in the first region, the rotation regulating means comprising a protrusion formed on a surface of the driven gear and having a vertical surface and an inclined surface, a vertical portion disposed in the vicinity of the rotational axis of the driven gear for engagement with the vertical surface of the protrusion when the movable blade is in the first region to thereby regulate rotation of the driven gear in the counterclockwise direction, and a rotation regulating member having an arm portion for undergoing displacement along the inclined surface of the protrusion when the driven gear undergoes rotation in the clockwise direction.
A cutter device for cutting at a predetermined position recording paper which has undergone printing by a printer, the cutter device comprising:
- a movable blade;
- a stationary blade;
- a one-way clutch mechanism having a driven gear and a driving gear for rotationally driving the driven gear, the driven gear having an outer peripheral portion, a plurality of teeth formed on a part of the outer peripheral portion, and a cutout portion formed on a part of the outer peripheral portion different from the part on which the teeth are formed;
- a trigger gear member having a peripheral surface portion and an arm portion integrally connected to the peripheral surface portion, the peripheral surface portion having a preselected number of teeth for undergoing rotational movement in clockwise and counterclockwise directions within the cutout portion of the driven gear, the teeth of the trigger gear member being disposed in meshing engagement with the driving gear to transmit a rotational driving force to the driven gear in the clockwise direction;
- biasing means for biasing the arm portion of the trigger member in the clockwise direction, the driving gear being disposed in meshing engagement with the teeth of the trigger member to displace the teeth of the trigger member in the counterclockwise direction against the bias of the biasing means during rotation of the driving gear in the clockwise direction so that the teeth of the trigger member do not transmit a rotational driving force to the driven gear in the counterclockwise direction;
- a cutter drive mechanism having a rotation device connected to the one-way clutch mechanism so that through one rotation of the driven gear the rotation device reciprocally moves the movable blade between a home region in which the movable blade is spaced-apart from the stationary blade and a cutting region in which the movable blade cooperates with the stationary blade to cut a recording paper;
- and
- rotation regulating means for regulating rotation of the driven gear in the counterclockwise direction when the movable blade is in the home position.
A cutter device for cutting recording paper, the cutter device comprising:
- a movable blade;
- a stationary blade;
- a clutch mechanism having a driven gear mounted for undergoing rotation in clockwise and counterclockwise directions and a driving gear for rotationally driving the driven gear about a rotational axis;
- a cutter drive mechanism having a rotation device connected to the clutch mechanism so that through one complete rotation of the driven gear the rotation device reciprocally moves the movable blade between a first region in which the movable blade is spaced apart from the stationary blade and a second region in which the movable blade cooperates with the stationary blade to cut recording paper;
- rotation regulating means for regulating rotation of the driven gear in the counterclockwise direction when the movable blade is in the first region;
- and
- a trigger gear member having a peripheral surface portion and an arm portion integrally connected to the peripheral surface portion, the peripheral surface portion having a preselected number of teeth for meshing engagement with the driving gear to transmit a rotational driving force to the driven gear.
Dependencies are inferred from the claim text.