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| Number | Title | Issue Date |
| 7957688 | Image forming method and image forming apparatus In an image forming method, an electrostatic latent image formed on a surface of a photoreceptor is developed into a developer image with a developer, and a printing paper transported on a transfer belt is brought into contact with the surface of the photoreceptor s... | 06/07/2011 |
| 7515868 | Stripper assembly and a printing machine including the same A stripper assembly strips a media sheet from a photoreceptor belt. A support bracket supports a stripping finger base which includes a multiplicity of attached stripping fingers. The support bracket is fixed proximate to the photoreceptor belt in a media stripping ... | 04/07/2009 |
| 7328899 | Device for guiding sheets An apparatus for fixing a sheet on the surface of an electrically conductive cylinder of a printing machine for processing sheets, in particular, a sheet-fed offset printing machine. The apparatus includes an electrode that extends over the width of the cylinder for... | 02/12/2008 |
| 7315719 | Transfer charge device cover in non-image receiving medium area An image forming apparatus may include: a photoreceptor and a corona charging device or bias transfer roller that provides a charge to an image receiving medium. A cover may be disposed over a portion of the corona charging device or the bias transfer roller to shie... | 01/01/2008 |
| 7280798 | Image forming apparatus with conveying device urging a recording material toward a charge eliminating member The image forming apparatus has an image bearing member for bearing a toner, a transfer device which forms a transfer area in cooperation with the image bearing member for transferring the toner on the image bearing member onto a recording material, a charge elimina... | 10/09/2007 |
| 7270323 | Sheet feeding device with two cams A sheet supplying/feeding device includes a sheet placing plate that receives at least a tip of a sheet, a feeding unit that feeds the sheet while being in contact with the sheet placed on the sheet placing plate, and a driving unit that drives the feeding unit. Pre... | 09/18/2007 |
| 7251450 | Paper separator and processor cartridge A paper separator may be equipped with plurality of paper-separating fingers for separating sheet(s) of paper for image formation and abutting and/or backed off from photosensitive body or bodies, paper separator optionally comprising finger body or bodies capable o... | 07/31/2007 |
| 7125183 | Recording apparatus and method thereof and removing claw therefor A removing claw 164 has a width W1 in a cross direction of 5 [mm] and a rectangular cross section with a height reduced toward a tip, and both ends of an upper side of the rectangle are chamfered to have a chamfered portion with a radius of r=1 [mm]. C... | 10/24/2006 |
| 7092666 | Roller mechanism for separating paper A roller mechanism for separating paper has a fusing roller, a following roller, and at least two paper-separating rings. The fusing roller is formed with at least two annular grooves on a periphery thereof. The two paper-separating rings are respectively mounted in... | 08/15/2006 |
| 7086713 | Media detack from an intermediate printing member An inkjet printer for printing on a print medium having an obverse side and a reverse side, including a rotating intermediate transfer member for receiving a print image and transferring the print image to the obverse side of the print medium and a rotating drag for... | 08/08/2006 |
| 7070182 | Sheet separating mechanism, fixing device, and image forming apparatus A sheet separating mechanism includes a separation claw arranged on the surface of a rotatable member such that the separation claw can be rotated around a shaft of the rotatable member with which a claw portion can be brought into slidable contact. A holder rotatab... | 07/04/2006 |
| 7024153 | Skiving device and methods of use A skiving device including at least one nozzle tip and at least one roller is described, as well as methods of using the skiving device. Skives made with the skiving device are clean, neat, and do not damage underlying layers. ... | 04/04/2006 |
| 7003259 | Image forming apparatus An image forming apparatus according to the present invention includes: a discrimination circuit for detecting a conveying load at a time a sheet, on which an image is to be formed, is conveyed through a curved conveying path, for discriminating a thickness of the s... | 02/21/2006 |
| 6993278 | Fixing device transport for a digital printer or copier machine A digital printer or copier machine (1) is proposed for the single-sided or double-sided printing of a substrate (11), with at least one fixing device (3) for fixing toner onto the substrate (11), whereby the fixing device (3) has ... | 01/31/2006 |
| 6844051 | Separation fingers for electro photographic devices This invention relates to a separation finger used in an Electro photographic device such as photocopying devices and laser-beam printers. More specifically, it relates to a separation finger with remarkably improved durability which has a sharp tips and is capable ... | 01/18/2005 |
| 6801726 | Image forming apparatus In an image forming apparatus provided with a stripping device for stripping a sheet from a photosensitive member, a fan for sucking the sheet, and a duct for connecting the stripping device and the fan together, the fan is started when an operation signal detector ... | 10/05/2004 |
| 6769686 | Image forming apparatus There are disposed a star-wheel 21 in the form of a thin wall-thickness having a sharp projecting portion 21a as auxiliary member which strips off a recording paper P from the surface of a photosensitive body 2, and an inversion preventin... | 08/03/2004 |
| 6660399 | Composition for roller and roller therefrom A composition for roller for an electronic copying machine or printer which comprises a vinyl polymer (A) having at least one alkenyl group per molecule, and a roller as fabricated using said composition for roller. The present invention provides a composit... | 12/09/2003 |
| 6289199 | Image forming apparatus provided with separation member to which AC voltage is applied An image forming apparatus has an image bearing body for bearing a toner image, a transfer device for transferring a toner image on an image bearing body to a transfer material, a separation member for separating a transfer material from the image bearing... | 09/11/2001 |
| 6282402 | Image forming apparatus and method for separating and conveying a transferred material As a peeling device for peeling off a paper from a photosensitive drum after completing the transfer of an image, a peeling charger and a sucking fan are used jointly and the sucking wind velocity level of the sucking fan can be controlled by switching it... | 08/28/2001 |
| 6205316 | Fixing apparatus A fixing apparatus has a heat roller, a paper-separating lug, and a guide roller. The lug engages the heat roller to separate a recording medium from the heat roller if the recording medium rotates in contact with the heat roller. The lug is movable betwe... | 03/20/2001 |
| 6205300 | Image forming apparatus for forming a more uniform image An image forming apparatus including an image forming unit to form a developer image on an image carrier, a conveying member to convey an image receiving member toward the image carrier, a transfer charger to transfer the developer image formed on the ima... | 03/20/2001 |
| 6173150 | Separation charger for an image forming apparatus An image forming apparatus includes an image bearer for bearing a toner image, transfer device for transferring the toner image on the image bearer to a recording medium, a separating charger for facilitating separation of the recording medium from the im... | 01/09/2001 |
| 6141527 | Image forming apparatus having separating member with bias An image forming apparatus includes an image bearing member for bearing electrostatic images. A developing device develops the electrostatic images on the image bearing member with toner. A transferring device transfers the toner image on the image bearin... | 10/31/2000 |
| 6112038 | Image forming apparatus having a stable potential at a first transfer point An intermediate transfer member is constituted by a composite layer member that includes a conductive layer and a resistance layer, which is integrally formed on the conductive layer and to which the visible image is transferred. When a peripheral speed o... | 08/29/2000 |
| 5970305 | Electrophotographic apparatus having a film for separating printed media from a photoconductive drum An electrophotographic development system preventive of a rolling of paper on a photosensitive drum includes a charging roller for charging the surface of the photosensitive drum with high voltage by a rotation with the photosensitive drum, an exposure un... | 10/19/1999 |
| 5943530 | Image forming apparatus with an increased toner adhesion feature An image-forming apparatus is disclosed. Unstably charged toner contained in a developer is attached to the surface of an image carrier by a developing sleeve for use in a developer unit. This toner is allowed to pass through the transfer position while k... | 08/24/1999 |
| 5926683 | Image forming apparatus with two-potential-level electricity removing member The present invention relates to an image forming apparatus which comprises an image bearing member for bearing a toner image, a transfer charger for transferring the toner image from the image bearing member to a transfer material, and an electricity rem... | 07/20/1999 |
| 5758252 | Image forming apparatus with improved transportation of curled sheets An image forming apparatus includes an image carrying body on which a toner image is created. A sheet carrying/transporting rotational body adsorbs a recording sheet to which the toner image on the image carrying body is transferred, and transports the sh... | 05/26/1998 |
| 5710964 | Mechanism for facilitating removal of receiver member from an intermediate image transfer member A mechanism for facilitating removal of a receiver member from intimate contact with an intermediate image transfer member of a reproduction apparatus having a primary image forming member, an intermediate image transfer member including a compliant outer... | 01/20/1998 |
| 5671471 | Sheet separating device A separating pawl is attached to a fixed portion around a rotatable member, and a separating end of the separating pawl extends from a fixed end of the separating pawl onto a circumferential surface of the rotatable member. A portion between the separatin... | 09/23/1997 |
| 5621513 | Electrically biased sheet stripping apparatus A sheet stripping device for stripping copy sheets from an arcuate imaging surface, including a support element and an electrically conductive stripping element coupled to an electrically biasing source. An electrical bias is applied to the stripping elem... | 04/15/1997 |
| 5617197 | Image forming apparatus having a device for stripping a transfer member carried on a transfer drum An image forming apparatus wherein a plurality of toner images having different colors from each other are successively formed on an image carrier, and the plurality of toner images formed on the image carrier are transferred to a transfer member carried ... | 04/01/1997 |
| 5608511 | Vacuum transport apparatus A prefuser vacuum transport apparatus that increases the latitude of sheet acquisition includes at least one perforated belt entrained around a vacuum plenum to provide a limited drive force on sheets being driven by the vacuum transport apparatus. The va... | 03/04/1997 |
| 5606407 | Image forming apparatus with jam clearing mechanism A paper folding member and a jam sensor are disposed downstream of the position at which a transfer drum confronts an image carrying body and in proximity to the transfer drum. The paper folding member is a platelike member substantially assuming a right-... | 02/25/1997 |
| 5543908 | Image forming apparatus having endless recording material carrying member An image forming apparatus includes a movable recording material carrying device having a flexible recording material carrying member for carrying a recording material; an image forming device for forming an image on the recording material carried on the ... | 08/06/1996 |
| 5541718 | Electrostatic image transfer device having a two level transfer voltage for improving image quality at leading and trailing edge regions An image-transfer device for transferring an image from an image-bearing member to a sheet-like material by an electrostatic force, having a charging member for charging the sheet-like material so that the image on the image-bearing member is transferred ... | 07/30/1996 |
| 5537193 | Image forming apparatus with recording sheet separating device In an image forming apparatus in which when separating a recording material from a recording-material conveying sheet, the recording-material conveying sheet is pressed and deformed by a pressing member, the pressing member has a convex curved portion con... | 07/16/1996 |
| 5459562 | Recording apparatus for printing both faces of a recording medium using an electrophotographyprocess A development process and a fixing process are carried out on a front side of a recording paper. The paper recorded on the first side is transported toward a returning transportation device. The development process and the fixing process are then carried ... | 10/17/1995 |
| 5454556 | Curl detection through pneumatic acquisition sensing A machine includes a scheme for detecting the level of curl in sheets in a stack by measuring the time it takes to acquire a sheet with a bottom corrugation vacuum feeder (BVCF). A vacuum switch changes state at a preset vacuum level thereby detecting any... | 10/03/1995 |
