摘要:
A fixing device includes a heating rotating body driven by a motor, a pressing member, a biasing unit, a switching unit that receives rotational power of the motor in order to either separate the pressing member and the heating rotating body or to allow the biasing unit to press the pressing member and the heating rotating body together, a power transmission mechanism that transmits the rotational power of the motor to the switching unit over a first path or a second path, the first path having a larger reduction ratio, and a power transmission targeting unit that switches the target of transmission of rotational power of the motor between the heating rotating body and the switching unit depending on the rotational direction of the motor and that includes a path selection unit that selects the first path during separation and the second path during pressing by the switching unit.
摘要:
An image carrier driver includes an image carrier, a first power transmitter, a rotator, a second power transmitter, and a damper. The image carrier is configured to rotate by power generated by a driving source. The first power transmitter is configured to transmit the power from the driving source to the image carrier. The rotator is disposed further downstream than the image carrier in a flow of power transmission. The second power transmitter is configured to transmit the power from the image carrier to the rotator. The damper is disposed in the image carrier and is configured to attenuate an oscillation associated with the power transmission and transmitted to the image carrier.
摘要:
A damper device having: an input member into which a rotary drive force is inputted; an output member which rotates in accordance with the inputted rotary drive force; a columnar viscoelastic member provided between the input member and the output member; a driving-side pressing member which is attached to the input member and which applies a pressing force on one end surface of the viscoelastic member in accordance with the inputted drive force; a passive-side pressing member which is attached to the output member and which receives a pressing force from the other end surface of the viscoelastic member; a first supporting member which supports the driving-side pressing member such that the driving-side pressing member can turn freely relative to the input member; and a second supporting member which supports the passive-side pressing member such that the passive-side pressing member can turn freely relative to the output member.
摘要:
A damper device having; an input member into which a rotary drive force is inputted; a passive member which receives the rotary drive force inputted into the input member and rotates; a viscoelastic material which is provided between the input member and the passive member; and a flexible member which prevents displacement of the viscoelastic material in a diametrical direction while not preventing a shake of the viscoelastic material in a rotating direction.
摘要:
A fixing device includes a heating rotating body driven by a motor, a pressing member, a biasing unit, a switching unit that receives rotational power of the motor in order to either separate the pressing member and the heating rotating body or to allow the biasing unit to press the pressing member and the heating rotating body together, a power transmission mechanism that transmits the rotational power of the motor to the switching unit over a first path or a second path, the first path having a larger reduction ratio, and a transmission control unit that establishes and cuts off transmission of rotational power of the motor to the switching unit by the power transmission mechanism and that includes a path selection unit that selects the first path during separation and the second path during pressing by the switching unit.
摘要:
A damper device having: an input member into which a rotary drive force is inputted; a passive member which receives the rotary drive force inputted into the input member and rotates; a viscoelastic material which is provided between the input member and the passive member; and a flexible member which prevents displacement of the viscoelastic material in a diametrical direction while not preventing a shake of the viscoelastic material in a rotating direction.
摘要:
A fixing device includes a heating rotating body driven by a motor, a pressing member, a biasing unit, a switching unit that receives rotational power of the motor in order to either separate the pressing member and the heating rotating body or to allow the biasing unit to press the pressing member and the heating rotating body together, a power transmission mechanism that transmits the rotational power of the motor to the switching unit over a first path or a second path, the first path having a larger reduction ratio, and a transmission control unit that establishes and cuts off transmission of rotational power of the motor to the switching unit by the power transmission mechanism and that includes a path selection unit that selects the first path during separation and the second path during pressing by the switching unit.
摘要:
An image carrier driver includes an image carrier, a first power transmitter, a rotator, a second power transmitter, and a damper. The image carrier is configured to rotate by power generated by a driving source. The first power transmitter is configured to transmit the power from the driving source to the image carrier. The rotator is disposed further downstream than the image carrier in a flow of power transmission. The second power transmitter is configured to transmit the power from the image carrier to the rotator. The damper is disposed in the image carrier and is configured to attenuate an oscillation associated with the power transmission and transmitted to the image carrier.
摘要:
An image forming apparatus includes: a driving source configured to generate power; a first rotator configured to be drivingly rotated by the power generated by the driving source; a first power transmission system configured to transmit the power from the driving source to the first rotator; a second rotator configured to be drivingly rotated by the power generated by the driving source; and a second power transmission system configured to transmit the power to the second rotator from the first power transmission system. A damper having a torsion spring constant and a torsion viscous damping constant making a maximum positional change value of the first rotator equal to or smaller than a predetermined positional change value is disposed between the first power transmission system and the second power transmission system.
摘要:
A fixing device includes a heating rotating body driven by a motor, a pressing member, a biasing unit, a switching unit that receives rotational power of the motor in order to either separate the pressing member and the heating rotating body or to allow the biasing unit to press the pressing member and the heating rotating body together, a power transmission mechanism that transmits the rotational power of the motor to the switching unit over a first path or a second path, the first path having a larger reduction ratio, and a power transmission targeting unit that switches the target of transmission of rotational power of the motor between the heating rotating body and the switching unit depending on the rotational direction of the motor and that includes a path selection unit that selects the first path during separation and the second path during pressing by the switching unit.