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Class 399/406 - Curl correction


Subclass of Class 399 - Electrophotography
Definition: Subject matter wherein a copy is delivered to an output
No. of applications: 69
Last issue date: 05/24/2012


1    
Application No.Application TitleIssue Date
20120128397SHEET DE-CURLING MECHANISM AND PRINTING APPARATUS USING THE SAME
A sheet de-curling mechanism includes a passageway, a first roller and a second roller. The first roller, disposed in the passageway, transports a sheet at a first speed in a transporting direction. The second roller, disposed downstream of the first roller, transports ...
05/24/2012
20110236102SHEET CURL CORRECTION APPARATUS AND IMAGE FORMING APPARATUS
The present invention includes a supporting member that supports a first roller and a second roller, a first actuator that rotates the supporting member, a first gear that is connected to an end of second roller on the first actuator side, a second gear that is threadab...
09/29/2011
20110229178FIXING UNIT AND IMAGE FORMING APPARATUS
A fixing unit includes a fixing member to fuse a toner image on a recording medium on the recording medium; a pressure member to press against the fixing member to define a first nip between the fixing member and the pressure member through which the recording medium is...
09/22/2011
20110229169IMAGE FORMING SYSTEM
An image forming system including: a fixing device for fixing a toner image on the recording sheet; a curl flattening section for flattening a curl formed on the recording sheet, and conveying the recording sheet in a downstream direction against the fixing device; a fi...
09/22/2011
20110211889PRINTING APPARATUS AND SHEET PROCESSING APPARATUS
A decurling unit regulates a decurling force so as to be smaller when a sheet is returned from a printing unit to a sheet feeding unit than when the sheet is fed from the sheet feeding unit to the printing unit....
09/01/2011
20110211890PRINTING APPARATUS AND DECURLING DEVICE
With front face printing, the sheet fed from a sheet feeding unit is led into a nipped position between a first pinch roller and a decurling roller from a first direction, and is discharged by decurling force being applied thereto at the decurling roller. On the other h...
09/01/2011
20110182642IMAGE-FORMING APPARATUS AND METHOD FOR CONTROLLING IMAGE-FORMING APPARATUS
An image-forming apparatus having an image-forming unit, a fixation unit for fixing a toner image transferred to paper, a double-sided print conveyance path for conveying the paper imprinted on one side toward the image-forming unit, a decurling unit for passing the pap...
07/28/2011
20110176821FIXING DEVICE AND IMAGE FORMING APPARATUS
A fixing device, in which an unfixed image carried by a recording medium is passed through a fixing nip part being pressed by a fixing rotative body and a pressuring rotative body, and is fixed to the recording medium, is disclosed, including: a pressing part, and contr...
07/21/2011
20110142518MEDIUM CORRECTING DEVICE AND IMAGE FORMING DEVICE
A medium correcting device includes: a first holding body that holds a first rotating body having a surface moving circumferentially; a second holding body that holds a second rotating body having a surface that moves following the circumferential movement of the first ...
06/16/2011
20110142517IMAGE FORMING DEVICE
An image forming device includes: an image forming section forming an image on a surface of a recording medium; a conveyance section conveying the recording medium on which the image is formed on a first conveyance course; a return section that returns the recording med...
06/16/2011
20110097127METHOD OF CORRECTING CURL OF SHEET AND RECORDING APPARATUS
In a first step, a sheet is conveyed in a direction, whereby a leading end portion of the sheet is fed to a position between a decurl roller and a decurl pinch roller, which are in positions spaced apart from each other. In a second step, the leading end portion of the ...
04/28/2011
20110091258IMAGE FORMING APPARATUS
An image forming apparatus includes an image forming unit configured to form an image on a sheet, a fixing unit configured to fix the image formed by the image forming unit on the sheet, a cooling unit configured to cool the sheet having the image fixed thereon by the f...
04/21/2011
20110064424DYNAMIC MEDIA THICKNESS, CURL SENSING SYSTEM
A method and system move a media sheet in a processing direction of a media path from a first nip to a second nip and move the media sheet in the processing direction of the media path from the second nip to a third nip. The method senses, using a sensor positioned betw...
03/17/2011
20110064502FIXING DEVICE AND IMAGE FORMING APPARATUS INCORPORATING THE FIXING DEVICE
A fixing system includes a fixing device that fixes a non-fixed image with heat onto a recording medium. The fixing device includes a fixing roller that generates heat and a pressing roller that presses against the fixing roller. A curl correction device is provided to ...
03/17/2011
20110058873Conveyer and image forming apparatus including the same
A conveyer includes a first rotating body; a second rotating body pair; and an intermediate rotating body arranged between the first rotating body and the second rotating body pair. A curl of the recording medium is corrected by winding and bending the recording medium ...
03/10/2011
20100329718IMAGE FORMING APPARATUS
An image forming apparatus comprises a fixing part for fixing a toner image on a transfer material to the transfer material, a conveying part provided on the downstream side of the fixing part, a correcting member provided in a conveyance path leading from the fixing pa...
12/30/2010
20100221052RECORDING SHEET DE-CURLING DEVICE AND IMAGE FORMING APPARATUS USING THE SAME
A sheet de-curling device: including a first de-curling roller, structured of a round axial shaft and a long bar-shaped member, wherein the long bar-shaped member is spiraled on the round axial shaft clockwise from a predetermined portion of a center of the round axial ...
09/02/2010
20100189447IMAGE FORMING APPARATUS
An image forming apparatus includes: an image forming unit that forms an image on a recording medium; a heating device that heats the image formed at the image forming unit, on the recording medium while recording medium is conveyed; a detecting device that is provided ...
07/29/2010
20100150635IMAGE FORMING APPARATUS
An image forming apparatus for conducting a fixing process by plural fixing devices for a sheet on which a toner image has been transferred from a transfer section, comprises: a first fixing device arranged on a sheet conveyance passage; a second fixing device arranged ...
06/17/2010
20100143014IMAGE FORMING APPARATUS
Disclosed herein is an image forming apparatus. The image forming apparatus includes a fixing device configured to fix a visible image transferred on a printing medium, a decurl device configured to correct a curl produced on the printing medium, a discharging device co...
06/10/2010
20100135708Curl correcting device, image forming apparatus, and sheet post-processing device
A curl correcting unit can be attached in a normal orientation and inverse orientation. In the normal orientation, a sponge roller being on the lower side, a sliding plate is pressed down by a curl-correction-amount adjusting mechanism. When the sliding plate is pressed...
06/03/2010
20100086338Transfer control mechanism for printer and transfer control method
A conveyance control mechanism for a printer including an image forming unit forming an image on a sheet being conveyed on a conveyance route, includes a curl detector configured to detect a curl of the sheet conveyed on the conveyance route, in an upstream of the image...
04/08/2010
20100067967IMAGE FORMING SYSTEM AND IMAGE FORMING APPARATUS
An image forming system includes: a decurl section which corrects a curl on a sheet on which an image has been formed; a sheet ejection section on which the sheet to be ejected is stacked; a finishing section which conducts post processing on the sheet on which the imag...
03/18/2010
20090317160SHEET PROCESSING APPARATUS AND IMAGE FORMING SYSTEM
A sheet processing apparatus including: a humidifier that humidifies a sheet; a curl correcting section that corrects a curl by applying mechanical bending force on a sheet; and a control section that causes humidification by the humidifier and curl correction by the cu...
12/24/2009
20090311022METHOD AND DEVICE FOR THE ALIGNMENT OF SHEET-SHAPED SUBSTRATES
Provided is a device (1) for the alignment of sheets in a printing machine, said device comprising two pairs of rollers for the alignment of the sheets in their advance direction, for the alignment transverse to their advance direction and with respect to skewing...
12/17/2009
20090304429IMAGE FORMING APPARATUS
There is a provided a curl corrector which corrects a curl formed by a fixer when a duplex image formation mode is selected. The curl corrector is provided in a conveying path other than conveying paths commonly used in a conveying path for multiple image formation and ...
12/10/2009
20090285614IMAGE FORMING APPARATUS
By providing a rib formed to be inclined with respect to the conveyance direction on a guide member provided at the upstream side of the conveyance section where a contact member that cools rapidly the sheet subjected to fixing processing is provided, a problem of the o...
11/19/2009
20090257802CURL CORRECTION DEVICE AND IMAGE FORMNIG APPARATUS
A curl correction device that corrects curl, including: a curl correction shaft that drives to carry a sheet; a first supporting member that supports the curl correction shaft; a curl correction roll that holds the sheet between the curl correction shaft and the curl co...
10/15/2009
20090257801IMAGE FORMING APPARATUS AND CURL STRAIGHTENING DEVICE
An image forming apparatus includes: a sheet conveyance section that conveys a sheet; an image forming section that forms an image on the sheet conveyed by the sheet conveyance section according to an image signal; a sheet heating section that heats the sheet on which t...
10/15/2009
20090190982PRINTING SYSTEM
In a printing system, a position changing element moves a decurling roller around a conveyance roller to switch the position of the decurling roller relative to the conveyance roller at least between a decurling position in which a paper web is conveyed while being decu...
07/30/2009
20090190985DECURLING MECHANISM
A decurling mechanism for performing a decurling process of correcting the curl of paper includes: a first roller; a second roller disposed travelably around the first roller; and a roller position changing mechanism for changing the second roller to a plurality of posi...
07/30/2009
20090190984DECURLING MECHANISM
A decurling mechanism is configured so that a position changing roller moves a decurling roller among a plurality of decurling positions from the weakest decurling position to the strong decurling position. In this manner, the decurling force applied to each piece of pa...
07/30/2009
20090190983DECURLING MECHANISM
A decurling mechanism moves a decurling roller around a conveyance roller by means of a position changing roller to change the relative position of the decurling roller to the conveyance roller to a decurling position in which a piece of paper web is conveyed while bein...
07/30/2009
20090154976METHOD AND APPARATUS FOR ENHANCED SHEET HOLD DOWN ON AN IMAGING TRANSPORT
A method of enhancing cut sheet edge hold-down on an imaging transport surface, the method including: (a) moving a cut sheet towards the sheet the imaging transport surface; (b) inducing a desired curl on one of the lead edge and trail edge of the cut sheet before the c...
06/18/2009
20090129839IMAGE FORMING APPARATUS AND IMAGE FORMING METHOD
The image forming apparatus is provided with: a carrier that carries a toner image; a transporting unit that transports a sheet with using a transporting route; a transfer unit that transfers the toner image carried by the carrier to the sheet transported by the transpo...
05/21/2009
20090116890DECURL DEVICE, IMAGE FORMING APPARATUS PROVIDED WITH DECURL DEVICE AND FINISHING APPARATUS PROVIDED WITH DECURL DEVICE
A decurl device which corrects a curl of a sheet includes: a soft roller having a surface layer which is deformed by receiving a contact force; a hard roller which contacts the soft roller and deforms the surface layer of the soft roller; a driving section which drives ...
05/07/2009
20090110460SHEET MOISTURIZING DEVICE AND IMAGE FORMING APPARATUS PROVIDED THEREWITH
A sheet moisturizing device having a moisturizing section that moisturizes a sheet and a guide which guides the sheet that has been moisturized by the moisturizing section, the guide includes a first guide member made of resin having a plurality of ribs, arranged immedi...
04/30/2009
20090041523Image Forming Apparatus
An image forming apparatus which inhibits sheet curl without requesting a user to do tiresome work, such as resetting of sheets. On a touch panel, a user makes a setting whether to inhibit sheets of a printing medium from curling. When the setting indicates necessity of...
02/12/2009
20090010698TRANSFER APPARATUS AND IMAGE FORMING APPARATUS EQUIPPED THEREWITH
A transfer apparatus for transferring a toner image onto a sheet having: an endless belt; a plurality of rollers for supporting the endless belt around the plurality of rollers; and a discharge section for corona discharging the sheet, wherein the plurality of rollers i...
01/08/2009
20090003912CURL CORRECTING DEVICE AND IMAGE FORMING APPARATUS
A curl correcting device for correcting a curl of a sheet at a curved belt-nip portion includes an endless belt extending between a driving roller and a driven roller, and a pressing roller configured to press a belt surface of the endless belt. A stepping motor is cont...
01/01/2009
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