# US 2014/0197595 A1 · Media registration system with sheet curl control > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2014/0197595 A1 - Document ID: US20140197595A1 - Status: Published application - Kind: A1 - Application number: 14/217,872 - Filed: 2014-03-18 - Published: 2014-07-17 - Earliest claimed: 2011-04-12 - Assignees: Xerox Corporation - Applicants: Xerox Corporatoin - Inventors: Barry P. Mandel; Marina L. Tharayil; Donald E. Johnston - Web page: https://patentgrep.com/patent/US20140197595A1 ## CPC - B65H 9/002: {changing orientation of sheet by only controlling movement of the forwarding means, i.e. without the use of stop or register wall} - B41J 11/0005: {Curl smoothing, i.e. smoothing down corrugated printing material, e.g. by pressing means acting on wrinkled printing material} - B65H 7/02: by feelers or detectors - B65H 29/52: Stationary guides or smoothers - B65H: HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES - B41J: TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS ## Abstract According to aspects illustrated herein, a system, a printmaking device, and a method for pre-curling and registering media are provided herein. The system includes a media curler system and a deskew mechanism. The media curler system pre-curls at least one of lead edge and a trail edge of a sheet before delivery to a media hold-down transport. The deskew mechanism is coupled to the media curler system for pivoting the media curler system about a pivot axis to deskew the sheet. The pivot axis extends perpendicular to the media transport path. In operation, as the lead edge enters the pre-curling and registration system, the media curler system pre-curls the sheet towards the media hold-down transport. As the sheet is being pre-curled, the deskew mechanism pivots the media curler system about the pivot axis to correct any skew errors in the sheet. ## Claims ### Claim 1 A pre-curling and registration system for pre-curling and registering media comprising: a media curler system for pre-curling at least one of a lead edge and a trail edge of a sheet before delivery to a media hold-down transport, said sheet including said lead edge, said trail edge, and a first side edge and a second side edge therebetween, wherein said lead edge is approximately parallel to said trail edge; and a deskew mechanism coupled to said media curler system for pivoting said media curler system about a pivot axis to deskew said sheet, said pivot axis extends perpendicular to a transport path of said media hold-down transport, wherein said lead edge enters the pre-curling and registration system and said media curler system pre-curls said sheet towards said media hold-down transport, and as said sheet is being pre-curled, said deskew mechanism pivots said media curler system about said pivot axis to correct any skew errors in said sheet. ### Claim 2 (depends on 1) A system of claim 1, wherein said media hold-down transport is one of a media hold-down drum and a media hold-down belt transport. ### Claim 3 (depends on 1) A system of claim 1, wherein said media curler system is a penetrating nip curler, said penetrating nip curler including a compressible roller and a hard penetrating roller, said hard penetrating roller being of a smaller diameter than said compressible roller. ### Claim 4 (depends on 1) A system of claim 1, wherein said media curler system is a belt and roll curler. ### Claim 5 (depends on 1) A system of claim 1, wherein said media curler system is a three roll and baffle curler. ### Claim 6 (depends on 1) A system of claim 1, wherein said media curler system pre-curls said lead edge and said trail edge of said sheet. ### Claim 7 (depends on 1) A system of claim 1, further comprising: a lateral motion motor coupled to said media curler system for moving said media curler system along an axis that traverses said media hold down transport; and one or more lateral array sensors configured for use in combination with said lateral motion motor to detect a cross-process position of said sheet for correction of the cross-process position of said sheet. ### Claim 8 (depends on 1) A system of claim 1, wherein said deskew mechanism includes a pinion gear and a pinion rack, where, rotation of said pinion gear causes said deskew mechanism to pivot about a pivot axis. ### Claim 9 (depends on 1) A system of claim 1, further comprising a plurality of point sensors configured to detect a skew in said sheet. ### Claim 10 (depends on 1) A system of claim 1, further comprising a controller configured to control one or more of said media curler system and said deskew mechanism. ### Claim 11 A printmaking device for pre-curling and registering media comprising: a media hold-down transport adapted to move a sheet of media along a media transport path, said sheet including a lead edge, a trail edge, and a first side edge and a second side edge therebetween, wherein said lead edge is approximately parallel to said trail edge; and a pre-curling and registration system along said media transport path including a media curler system for pre-curling at least one of said lead edge and said trail edge of said sheet towards the media hold-down transport; a deskew mechanism coupled to said media curler system for pivoting said media curler system about a pivot axis to deskew said sheet, said pivot axis extends perpendicular to said media transport path; and a printing module including said media hold-down transport for transporting said sheet past a marking system, operatively connected to said media transport path, said printing module for printing an image on said pre-curled sheet, wherein said media transport path moves said sheet in a process direction and said lead edge enters said pre-curling and registration system, said media curler system pre-curls said sheet towards said media hold-down transport, as said sheet is being pre-curled, said deskew mechanism pivots said media curler system about said pivot axis to correct any skew errors in said sheet, said media transport path moves said sheet from said pre-curling and registration system to said printing module. ### Claim 12 (depends on 11) A printmaking device of claim 11, wherein the printmaking device is a multi-pass drum system and said hold-down transport is a hold-down drum. ### Claim 13 (depends on 11) A printmaking device of claim 11, wherein said media curler system is a penetrating nip curler, said penetrating nip curler including a compressible roller and a hard penetrating roller, said hard penetrating roller being of a smaller diameter than said compressible roller. ### Claim 14 (depends on 11) A printmaking device of claim 11, further comprising a lateral motion motor coupled to said media curler system for moving said media curler system along an axis that traverses said media transport path. ### Claim 15 (depends on 11) A printmaking device of claim 11, wherein said media curler system is a belt and roll curler. ### Claim 16 (depends on 11) A printmaking device of claim 11, wherein said media curler system is a three roll and baffle curler. ### Claim 17 (depends on 11) A printmaking device of claim 11, wherein said hold-down transport is configured to generate a buckle between said lead edge and said trail edge of said sheet as the sheet is being driven onto the hold-down transport to reduce motion quality disturbances. ### Claim 18 (depends on 11) A printmaking device of claim 11, further comprising one or more lateral array sensors configured for use in combination with said pre-curling and registration system to detect a cross-process position of said sheet and correct the cross-process position of said sheet. ### Claim 19 (depends on 11) A printmaking device of claim 11, wherein said deskew mechanism includes a pinion gear and a pinion rack, where rotation of said pinion gear causes said deskew mechanism to pivot about a pivot axis. ### Claim 20 (depends on 11) A printmaking device of claim 11, wherein said pre-curling and registration system further includes a plurality of point sensors configured to detect a skew in said sheet. ### Claim 21 (depends on 11) A printmaking device of claim 11, further comprising a controller configured to control one or more of said media transport path, said pre-curling and registration system, and said printing module. ### Claim 22 A method pre-curling and registering media comprising: moving a sheet of media along a media transport path in a process direction to a pre-curling and registration system, said sheet having a lead edge, a trail edge, and a first side edge and a second side edge therebetween, wherein said lead edge is approximately parallel to said trail edge; simultaneously, pre-curling said sheet and pivoting said sheet about a pivot axis to correct any skew errors in said sheet, said pivot axis extends perpendicular to said media transport path and traverses said media transport path; and delivering said sheet to a printing module. ### Claim 23 (depends on 22) A method of claim 22, further comprising detecting a skew error using a plurality of point sensors. ### Claim 24 (depends on 22) A method of claim 22, further comprising: detecting a lateral error using one or more array sensors; and corrected said lateral error using a lateral motion motor. ### Claim 25 (depends on 22) A method of claim 22, further comprising pre-curling said lead edge and said trail edge of said sheet. ### Claim 26 (depends on 22) A method of claim 22, further comprising pre-curling said sheet with a penetrating nip curler.