Patent application number | Description | Published |
20080226358 | Image forming apparatus - A reciprocating-motion converting mechanism includes a cam that rotates around a rotation center; a reciprocating member that is reciprocated due to rotation of the cam; and a pressing unit that presses the reciprocating member to the cam. A first load torque is generated by a load applied at a point of contact of the cam and the reciprocating motion member. A load applying unit applies a load to the cam to generate a second load torque having a phase substantially opposite to a phase of the first load torque. | 09-18-2008 |
20090129831 | TRANSFER DEVICE AND IMAGE FORMING APPARATUS - A neutralizing mechanism is provided on at least one conveying path proximal member installed on a conveying path of a sheet material in a vicinity of a transfer position, and is grounded by using a conducting material. The neutralizing mechanism includes a neutralizing circuit that includes a resistor and a ground switch electrically connected in parallel to each other. The ground switch is turned off at least at a time of applying the transfer bias to prevent a leakage of a transfer current, and turned on for a predetermined time at a time other than the time of applying the transfer bias to earth and remove a static electricity from the conveying path proximal member. | 05-21-2009 |
20120237268 | POWDER TRANSPORT DEVICE AND IMAGE FORMING APPARATUS INCORPORATING SAME - A powder transport device includes a first transport tube through which powder falls under gravity; a second transport tube having a transport member that transports the powder in a substantially horizontal direction; and a joint section having a ceiling, opposed side walls, an upstream wall, and a downstream wall. The joint section defines a first drop region, defined by the downstream wall and the side walls, continuous with and positioned directly under the first transport tube, to drop the powder dropped from the first transport tube; and a second drop region, defined by the ceiling, the upstream wall, and the side walls, displaced relative to and continuous with the first drop region, positioned adjacent to the second transport tube, to drop the powder transported from the second transport tube upstream from the first drop region in the direction in which the powder is transported through the second transport tube. | 09-20-2012 |
20130011158 | BELT DEVICE AND IMAGE FORMING APPARATUS - A belt device includes: a belt that passes through a plurality of image forming units, each of the image forming units including a transfer member and an image carrier as a pair, the transfer member moves in a direction to contact with the belt and in a direction so as to be separated from the belt; a cleaning unit cleans an outer periphery of the belt after the belt passes through all the image forming units; and a pressing member is disposed between the cleaning unit and the image forming unit located on the most upstream side and that presses the outer periphery of the belt, wherein when the transfer member of at least one of the image forming units moves to be separated from the belt, the transfer member of the rest of the image forming units and the pressing member support the belt. | 01-10-2013 |
20130051854 | IMAGE FORMING APPARATUS - An image forming apparatus includes: a rotatable transfer member rotatably driven while carrying a toner image thereon; a rotary transfer member to form a transfer nip for transferring the toner image to a recording medium; a housing rotatable about a first rotation center together with the rotary transfer member and switching between a closed state and an open state by the rotation about the first rotation center; a guide member to guide the recording medium conveyed through a conveyance path toward upstream in the direction of rotation of the rotatable transfer member than the transfer nip; a support frame to support the rotatable transfer member; a biasing member to bias the guide member; and a receiving part, disposed on the support frame, configured to contact the guide member biased by the biasing member and position the guide member in the closed state of the housing. | 02-28-2013 |
20140105655 | BELT UNIT, TRANSFER UNIT INCLUDING THE BELT UNIT, AND IMAGE FORMING APPARATUS INCLUDING THE TRANSFER UNIT - A belt unit includes a belt wound around a plurality of rollers to rotate endlessly, a contact member disposed along a surface of the belt, an opposing member disposed facing the contact member via the belt, a moving member including an action receiving portion, to swing and movably support the opposing member to contact and separate from the belt, and a moving assembly. The moving assembly includes an actuator to bias the action receiving portion in a first direction in which the opposing member contacts the belt and in a second direction opposite the first direction in which the opposing member separates from the belt, a drive mechanism to move the actuator in the first and the second directions, and an elastic member to transmit a moving force of the actuator to the action receiving portion when the actuator moves. | 04-17-2014 |
20140147165 | TONER COLLECTION UNIT AND IMAGE FORMING APPARATUSINCORPORATING SAME - A toner collection unit, which can be included in an image forming apparatus, includes a collected toner container having an opening and storing collected toner, a flexible seal sealing the opening of the collected toner container, having a shape of a recess in an initial condition before toner is collected in the container, and being flexible to change the shape to inflate outwardly due to a pressing force exerted from the toner stored in the container, a moving unit disposed outside the flexible seal and movable both in a positive direction to approach the opening of the container and in an opposite direction to move away from the opening when contacting the flexible seal inflating outwardly, a detector detecting movement of the moving unit, and a regulator regulating the moving unit from coming into the recess of the flexible seal in the initial condition. | 05-29-2014 |
20150248099 | IMAGE FORMING APPARATUS - An image forming apparatus is disclosed, including a movable image bearer bearing an image thereon which is transferred to a recording medium when the image comes into contact with the recording medium; and a twining prevention member which is arranged in the vicinity of the image bearer on the side downstream of a portion of the contact between the recording medium and the image bearer in a moving direction of the image bearer to prevent the recording medium from twining around the image bearer, wherein the twining prevention member includes, in the portion of the contact with the recording medium, a high friction resistance portion which regulates movement of the recording medium. | 09-03-2015 |