Class / Patent application number | Description | Number of patent applications / Date published |
399311000 | Corona | 10 |
20080298858 | Automation mechanism for positioning transfer dicorotron cover or shutter - This is a structure useful in electrostatic marking systems that prevents a charge from contacting a photoreceptor in areas not covered by paper. An automatically movable cover is positioned between a corona device and the photoreceptor to prevent the charge emitted by the corona from damaging the unprotected areas of the photoreceptor. The movement and positioning of the shutter or cover is automatically calibrated by the width of paper being used. Since a plurality of paper widths can be used in an electrostatic marking system, various portions of the photoreceptor will be exposed. The entire determination to move the cover or shutter and to the extent positioned is automatically determined minimizing the possibility of error if manual positioning of the cover was used. | 12-04-2008 |
399312000 | Having belt transporting copy | 9 |
20110110692 | IMAGE FORMING APPARATUS - An image forming apparatus includes a separation supporting unit for forming undulations on a recording material bearing member, and a roller disposed between the separation supporting unit and a transfer nip and configured to stretch the recording material bearing member. | 05-12-2011 |
20110142502 | IMAGE FORMING APPARATUS - An image forming apparatus comprising: an image bearing member; a conveying member; a transfer means; an attraction means, which is disposed upstream of the transfer means in a conveying direction of the transfer material, for attracting the transfer material onto the conveying member; and a winding means, which is disposed downstream of the transfer means in the conveying direction of the transfer material, for winding the conveying member, wherein a contact amount between the conveying member and the winding means corresponding to a first region where a width of the attraction means pressing the conveying member in the conveying direction is smaller than the contact amount between the conveying member and the winding means corresponding to a second region in which a width of the attraction means which presses the conveying member in the conveying direction that is smaller than the first width. | 06-16-2011 |
20110293337 | IMAGE FORMING APPARATUS - An image forming apparatus includes an image bearing member for bearing a toner image; a toner image forming portion for forming a toner image on the image bearing member; a rotatable belt member, stretched by a plurality of stretching members, for carrying and conveying a recording material; a transfer member for transferring the toner image from the image bearing member onto the recording material carried on the belt member by pressing the belt member against the image bearing member; a bias applying portion for applying to the transfer member a transfer bias for transferring the toner image from the image bearing member onto the recording material; a push-up member for locally pushing up the belt member from an inner surface side of the belt member, in a direction perpendicular to a recording material conveyance direction, at a downstream-side position of the transfer member with respect to the recording material conveyance direction; and an execution portion for executing an operation in a mode in which the recording material is separated from the belt member by a push-up operation for the belt member by the push-up member. In the mode, the push-up operation of the push-up member is performed, during rotation of the belt member, before the transfer bias is applied to the transfer member. | 12-01-2011 |
20110305488 | IMAGE FORMING APPARATUS - An image forming apparatus includes an image bearing member, a movable belt member configured to bear and convey a recording medium, a transfer member, a lifting unit configured to lift the belt member on a downstream side of the transfer member in a conveying direction of the recording medium, from an inner surface side, so that a belt surface locally protrudes in a width direction of the belt member, and an execution unit configured to be capable of executing a mode for separating the recording medium by forming using the lifting unit a first protrusion having a first height in a vertical direction perpendicular to the belt surface that is not lifted, and a second protrusion higher than the first height at a position adjacent to the first protrusion in the width direction. | 12-15-2011 |
20110305489 | TRANSFER DEVICE AND IMAGE FORMING APPARATUS - A transfer device includes a transfer belt, a plurality of rollers, and meandering preventive ribs. The plurality of rollers entrain the transfer belt thereabout. The meandering preventive ribs are provided at opposite widthwise ends of an inner peripheral surface of the transfer belt for preventing the transfer belt from meandering on the plurality of rollers. The plurality of rollers include at least one hollow roller having a central shaft and a plurality of internal ribs connecting the central shaft with an inner periphery of the hollow roller in a radial manner. The internal ribs are located so as not to come into contact with the meandering preventive ribs. | 12-15-2011 |
20130022379 | ELECTROPHOTOGRAPHIC PRINTER TRANSFER STATION WITH SKI - A transfer station is described for an EP printer that transfers a toner image to a receiver sheet carried on a rotatable transport web. The web is wrapped around a rotatable image-bearing member to define a transfer region. A nip-forming ski adjacent to the transport web on the opposite side thereof from the image-bearing member extends upstream of the transfer region. A ski mount causes the ski to press the transport web towards the image-bearing member. Therefore, as the receiver sheet moves with the transport web, the receiver sheet engages the image-bearing member upstream of the transfer region, causing the transport web to push against the ski to provide a selected nip-spacing between the image-bearing member and the transport web in the transfer region. | 01-24-2013 |
20130084110 | Image Forming Device - An image forming device, comprising: an image formation unit; an endless belt; first, second and third rollers arranged in parallel such that the belt extends therebetween; a collar that is provided at least at one of ends in an axial direction of the first roller and moves in the axial direction when the belt moves obliquely; a press arm that presses an one axial end side of the second roller on which the collar is provided; and an oblique motion force conversion unit that includes a cam on which an slanting surface is formed and a movable part slidably contacting the slanting surface, and that converts a force for moving the collar into a pressing force for pressing the press arm, and wherein the slanting surface becomes closer to a rotation center of the first roller at a point further from the belt. | 04-04-2013 |
20130108334 | Belt Tracking Using Steering Angle Feed-Forward Control | 05-02-2013 |
20150117914 | CONVEYOR SYSTEM AND IMAGE FORMING APPARATUS INCLUDING SAME - A conveyor system includes a first conveyor belt entrained about a separation roller and a support roller disposed upstream from the separation roller, a second conveyor belt entrained about a first roller disposed at an uppermost stream in a transport direction of a sheet-type medium and a second roller disposed downstream therefrom, a belt alignment device to tilt a rotary shaft of the separation roller to restrict a range of belt mistracking of the first conveyor belt in a width direction thereof within a predetermined range, and a restriction member to restrict an amount of inclination of the rotary shaft such that a hypothetical extended plane, which is a hypothetical extension of the outer circumferential surface of the first conveyor belt between the separation roller and the support roller to a downstream side in the transport direction, does not contact a rotational center axis of the first roller. | 04-30-2015 |