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| Number | Title | Issue Date |
| 7356303 | Image forming apparatus and a sheet conveying method of the image forming apparatus An image forming apparatus having: an image forming portion to form an image on a sheet; a fixing device to fix the image to the sheet by heating; a conveying path switching member to switch a conveying direction of the sheet, which is provided on downstream of the ... | 04/08/2008 |
| 7281678 | Decurl unit and printing device A decurl roller 22 of a decurl unit 20 is an axially rotatable member that eliminates curl of printing paper 24 drawn out of roll paper holders 21b. The decurl roller 22 is pressed by tension springs 23b, which... | 10/16/2007 |
| 7062218 | Quad-roll decurler A quad roll sheet curl control apparatus uses elastomer first and second rolls forming first and second nips with third and fourth rolls. The first and second rolls have compressible surfaces, while the third and fourth roll surfaces are formed of a substantially un... | 06/13/2006 |
| 6908242 | Roll paper curl correction device and record apparatus with the roll paper curl correction device A roll paper curl correction device has a clamp roller for clamping and transporting roll paper, and a guide member comprising a guide face being positioned in the downstream proximity of the clamp roller and formed so that the roll paper is curved to an opposite si... | 06/21/2005 |
| 6775516 | Sheet ejecting device, curl eliminating device and image forming apparatus A curl eliminating device, which is constructed in a way that can cool the sheet and straighten the curl at the same time without having a large device and without increasing cost. The device has a transporting roller, arranged in a sheet transporting passage; and a... | 08/10/2004 |
| 6767431 | Method for measuring and regulating curl in a paper or board web and a paper or board machine line In the manufacture of a paper or board web (W), the web is slit or cut, the rising/lowering (H) of the edges of a slit/cut gap (C) formed at the slitting/cutting point or the width (L) of the gap is measured by means of a measurement device (21A; 21B; ... | 07/27/2004 |
| 6716317 | Tension decurler for web material A running web is decurled by controlling web tension as well as the angle of wrap on a decurler roll and a cooperating pivot roll, all without affecting web tension in the downstream web converting process. An upstream brake roll and a downstream pull roll control w... | 04/06/2004 |
| 6671490 | Image forming apparatus This invention relates to an image forming apparatus that can correct a curl of a transfer medium correctly and smoothly. This image forming apparatus includes a curl correcting mechanism, including a rotatable sponge roller and a fixed press member which... | 12/30/2003 |
| 6603954 | Post slit decurler and sheet stacker device A portable, post slit decurler and high capacity stacker module for use with a machine, such as, a desktop page printer, includes a decurler that decurls prints after they have been slit into thirds, halves, or whole prints. The post slit decurler and hig... | 08/05/2003 |
| 6572521 | Ribbon curling machine and process A curl bow machine manufactures curl bows. Ribbon unwinds from spools and a curling rod applies controlled tension onto the ribbon, thereby curling it. Several strands of ribbon may be curled simultaneously. The resulting curled ribbon stream passes on to... | 06/03/2003 |
| 6488810 | Process and device for producing a fibrous material web Process and apparatus for influencing web characteristic in a machine for producing a fibrous web. The process includes guiding the fibrous material web in a still-wet state and stretching the still-wet state fibrous material web in a crosswise direction.... | 12/03/2002 |
| 6331155 | Ribbon curling machine and process A curl bow machine manufactures curl bows in accordance with a curl bow manufacturing process. Ribbon is controllably unwound from spools and prepared for stretching by a curling rod. The curling rod applies controlled tension onto the ribbon, thereby cur... | 12/18/2001 |
| 6280576 | After-dryer in a paper machine A method and arrangement for drying a paper to be surface-treated, in particular fine paper, in an after-dryer in a paper machine. The paper web is first dried in a forward dryer section of the paper machine by one or more groups with single-wire draw tha... | 08/28/2001 |
| 6199859 | Device for de-cambering a supporting material A paper decurling unit in a printer or copier provides a convex or concave path in the paper transport direction. The decurling device is adjustable.... | 03/13/2001 |
| 6094560 | Electrophotographic printing machine including a post-fusing substrate moisturizing and decurling device A moisturizing and decurling apparatus, mountable immediately downstream of a fusing apparatus in an electrostatographic reproduction machine, is provided for removing any curl from a copy sheet in order to produce a high quality toner particle image of a... | 07/25/2000 |
| 6064853 | Apparatus for curling materials An apparatus for straightening material includes a first guide surface and a second guide surface opposite the first guide surface. Pin (20) for pivoting the second guide surface is included, this operating to pivot the second guide surface toward the fir... | 05/16/2000 |
| 6033067 | Feed sheet fold removing structure and method used in ink jet recording apparatus A recording apparatus is capable of preventing both contamination on a recording surface due to a contact of a recording medium on an ink discharging surface even when recording on the recording medium with a concave/convex portion and an ill-discharged s... | 03/07/2000 |
| 6004432 | Sheet turn with vectored air supply In a papermaking machine for forming tissue paper, a turning bar is disposed having a curved surface about which a web of tissue paper is turned. The bar has an internal air plenum which supplies air to two sets of holes or slots. The first set is arrange... | 12/21/1999 |
| 6002913 | Xerographic fuser module with integral sheet decurler A fuser module for a compact printer or copier includes therein a decurler which shares a common drive means with the fuser rolls. The decurler comprises a set of deformable rollers disposed on a decurling roll, the total length of deformable rollers bein... | 12/14/1999 |
| 5947467 | Selectively adjustable decurler A decurler has an arched plate and a rotatable paper sheet feed roll defining an adjustable gap through which paper sheets driven by the roll exiting a copier or printer apparatus which causes the paper sheet to be curled transversely of the feeding direc... | 09/07/1999 |
| 5920759 | Sheet curl correcting mechanism and image forming apparatus having the mechanism An electrophotographic image forming apparatus having a sheet curl correcting mechanism includes: a rotary body including either an endless annular belt or a roller; and a pressing roller for pressing the rotary body, wherein the curled recording sheet on... | 07/06/1999 |
| 5848347 | Dual decurler and control mechanism therefor A compact dual decurler mechanism that provides a single straight paper path for achieving bidirectional decurling capability. The dual decurler mechanism consists of two pairs of drive roll and pinch shaft and a camming mechanism for controlling their en... | 12/08/1998 |
| 5787331 | Curl correction device of an image forming apparatus In order to correct curl of a recording sheet, having images recorded on both surfaces thereof, discharged from an image forming apparatus, the amount of a toner on a first surface of the recording sheet is stored in a memory. There is provided a unit for... | 07/28/1998 |
| 5637070 | Curl correcting device This invention relates to a curl correcting device comprising a sheet transport path, an opening member openable from a main body of the device, for opening the sheet transport path, transport means for transporting a sheet along the sheet transport path,... | 06/10/1997 |
| 5580588 | Apparatus for decurling a strip of photosensitive material An apparatus for transporting and/or decurling a strip of photosensitive material. The apparatus includes a plurality of rollers and a drum. A belt is wrapped about the plurality of rollers and are positioned such that the belt forms a receiving pocket fo... | 12/03/1996 |
| 5572308 | Image forming apparatus with curl forming means The present invention relates to an image forming apparatus in which a sheet is carried by a sheet carrier to form an image, and the sheet, on which the image has been formed, is again supplied to the sheet carrier by a re-supply unit to again form an ima... | 11/05/1996 |
| 5565971 | Pivotal bi-directional decurler A pivotal, bi-directional decurler that changes sheet bending direction from an away from image to a toward image direction includes a decurler support structure that is mounted for bi-directional movement by a cam mechanism. A belt member is entrained ar... | 10/15/1996 |
| 5555083 | Decurler apparatus for reducing cross curl in sheets A decurler for reducing cross curl in sheets includes at least one grooved elastomer transport belt and a ribbed pinch shaft. The ribs of the decurler shaft extend into the grooves in the belt to provide one-sided corrugations to a passing sheet and provi... | 09/10/1996 |
| 5519481 | Adaptive decurler for selective decurling of localized image areas An apparatus for adaptive localized sheet decurling in an electrophotographic printing machine. A segmented decurling device forms a drive nip with an elastically deformable surfaced roll. A plurality of sensors are provided to determine the basis weight ... | 05/21/1996 |
| 5515152 | Multi-gate tandem decurler A decurler apparatus in a machine changes sheet bending direction away from image (AI) to toward image (TI) direction by use of tandem gates and bending baffles to direct copy papers to different decurling paths to reduce copy curl. A controller automatic... | 05/07/1996 |
| 5414503 | Predictive decurler apparatus and method An apparatus for adaptive sheet decurling in an electrophotographic printing machine. A plurality of sensors are provided to determine the basis weight of the copy sheet, the density of the image being transferred to the copy sheet and fused thereon, the ... | 05/09/1995 |
| 5407417 | Ribbon curling device A ribbon curling device to facilitate the curling of a length of decorative ribbon such as gift wrapping ribbon includes a housing for storing the ribbon, a curling edge associated with an exit aperture in a wall of the housing, and a guide spaced from th... | 04/18/1995 |
| 5392106 | Automatic sheet decurler apparatus A decurling apparatus and method to decurl a substrate in a xerography machine. The invention combines a decurling apparatus having a penetration roller with a small diameter penetrating into a belt. The penetration roller is adjustable and as it pushes i... | 02/21/1995 |
| 5357327 | Sheet decurling system including cross-curl A system for decurling a sheet which is being advanced in a predetermined path within a printing machine includes a mechanism for generating a flow of room ambient air. The decurling system further includes a mechanism for directing the flow of room ambie... | 10/18/1994 |
| 5346457 | Device for eliminating curl of recording paper for use in image forming apparatus A support roller disposed on a side of a case main body of a facsimile apparatus is supported by a pair of right and left end holding members with associated coil springs for urging the support roller upward in an elevatable and oscillatable manner. A nos... | 09/13/1994 |
| 5316539 | Self-adjusting paper recurler Lower, arced decurling guide (1) is pivoted on pin (3) and biased upward by spring (7). Upper stop (11) prevents the lower guide from moving closer to upper decurling roller (15). Paper (9) is guided between these upper and lower guides and the lower guid... | 05/31/1994 |
| 5300012 | Uncurling device A device incorporated in a facsimile transceiver or similar recording apparatus of the type using a roll of paper for removing the curl of the paper. The device has a regular transport path, an uncurl transport path, and a separator fixed in place at a po... | 04/05/1994 |
| 5269743 | Method of imparting increased foldability to fold lines in paperboard material for paper containers A strip of paperboard material having a thickness of 170 to 600 μm and a multiplicity of fold lines formed widthwise thereof at a predetermined spacing and U-shaped in cross section is caused to travel as reeved around two prefolding rolls, 5 to 30 mm in... | 12/14/1993 |
| 5270778 | Sheet curl control apparatus The invention relates to a sheet curl control apparatus including a decurler (350) for reducing the curl in sheet material passing therethrough and adjusting means coupled to the decurler (350) for adjusting the decurling action of the decurler (350). Sen... | 12/14/1993 |
| 5258815 | Fixing apparatus A fixing apparatus for use in an electrophotographic copying machine for fixing a toner image on the surface of a recording paper. The fixing apparatus is provided with a fixing means to fix the toner image on a recording paper, ejecting means to eject th... | 11/02/1993 |
