公开(公告)号：US10099421B2

公开(公告)日：2018-10-16

申请号：US15152631

申请日：2016-05-12

Applicant: Xerox Corporation

Inventor： John S. Facci ,  David C. Craig ,  David S. Derleth ,  Eliud Robles Flores ,  Varun Sambhy

IPC: B29C67/00 ,  B29C64/245 ,  B29C64/379 ,  B29C47/06 ,  G03G15/16 ,  G03G15/22 ,  B33Y70/00 ,  B29C64/141 ,  B29C64/40 ,  B29C64/118 ,  B29C64/153 ,  B29C64/264 ,  B29C64/20 ,  B29C64/147 ,  B29C64/268 ,  B29C64/106 ,  B33Y10/00 ,  B33Y30/00 ,  B29C64/35

Abstract: 3-D printing transfers build material and support from an intermediate transfer belt (ITB) to a platen. The build material is the same as the support material, except that the build material includes a photoinitiator and the support material does not. The platen moves to make contact with the ITB, and the ITB transfers successive layers of build material and support material each time the platen contacts the ITB. The platen and a portion of the ITB that is adjacent the platen are heated prior to the platen contacting the ITB, and the same is exposed so as to crosslink polymers of build material, without crosslinking polymers of support material. The polymers of build material being crosslinked and the polymers of support material not being crosslinked makes the support material selectively soluble in a solvent.

公开(公告)号：US20180370135A1

公开(公告)日：2018-12-27

申请号：US16059496

申请日：2018-08-09

Applicant: Xerox Corporation

Inventor： John S. Facci ,  David C. Craig ,  David S. Derleth ,  Eliud Robles Flores ,  Varun Sambhy

IPC: B29C64/245 ,  G03G15/22 ,  B33Y70/00 ,  B29C64/141 ,  B29C47/06 ,  B29C64/379 ,  B29C64/40 ,  G03G15/16 ,  B29C64/147 ,  B33Y30/00 ,  B29C64/264 ,  B29C64/118 ,  B29C64/153 ,  B33Y10/00 ,  B29C64/35 ,  B29C64/106 ,  B29C64/268 ,  B29C64/20

CPC classification number: B29C64/245 ,  B29C48/18 ,  B29C64/106 ,  B29C64/118 ,  B29C64/141 ,  B29C64/147 ,  B29C64/153 ,  B29C64/188 ,  B29C64/20 ,  B29C64/264 ,  B29C64/268 ,  B29C64/291 ,  B29C64/295 ,  B29C64/35 ,  B29C64/379 ,  B29C64/40 ,  B33Y10/00 ,  B33Y30/00 ,  B33Y70/00 ,  G03G15/1605 ,  G03G15/224 ,  G03G15/225 ,  G03G2215/1695

Abstract: 3-D printing transfers build material and support from an intermediate transfer belt (ITB) to a platen. The build material is the same as the support material, except that the build material includes a photoinitiator and the support material does not. The platen moves to make contact with the ITB, and the ITB transfers successive layers of build material and support material each time the platen contacts the ITB. The platen and a portion of the ITB that is adjacent the platen are heated prior to the platen contacting the ITB, and the same is exposed so as to crosslink polymers of build material, without crosslinking polymers of support material. The polymers of build material being crosslinked and the polymers of support material not being crosslinked makes the support material selectively soluble in a solvent.

公开(公告)号：US10005227B2

公开(公告)日：2018-06-26

申请号：US15152651

申请日：2016-05-12

Applicant: Xerox Corporation

Inventor： John S. Facci ,  David C. Craig ,  Varun Sambhy ,  Eliud Robles Flores ,  David S. Derleth

IPC: B29C64/245 ,  B29C64/264 ,  B29C35/08 ,  G03G15/16 ,  G03G15/22 ,  G03G15/24 ,  B29C64/141 ,  B29C64/40 ,  B29C64/223 ,  B33Y30/00

CPC classification number: B29C64/245 ,  B29C35/0805 ,  B29C64/141 ,  B29C64/223 ,  B29C64/264 ,  B29C64/40 ,  B29C2035/0827 ,  B33Y30/00 ,  G03G15/1605 ,  G03G15/224 ,  G03G15/225 ,  G03G15/24 ,  G03G2215/1695

Abstract: A 3-D printer includes a development station positioned to electrostatically transfer layers of material to an intermediate transfer surface, and a transfuse station adjacent the intermediate transfer surface. The transfuse station is positioned to receive the layers as the intermediate transfer surface moves past the transfuse station. Also, a platen is included that moves relative to the intermediate transfer surface. The intermediate transfer surface transfers a layer of the material to the platen each time the platen contacts one of the layers on the intermediate transfer surface at the transfuse station to successively form a freestanding stack of the layers on the platen. A curing station is positioned to apply ultraviolet light to each layer, after each layer is transferred from the transfuse station to the platen. The curing station selectively applies the ultraviolet light to crosslink polymers only in a portion of the material within the layer.

公开(公告)号：US20170326794A1

公开(公告)日：2017-11-16

申请号：US15152631

申请日：2016-05-12

Applicant: Xerox Corporation

Inventor： John S. Facci ,  David C. Craig ,  David S. Derleth ,  Eliud Robles Flores ,  Varun Sambhy

IPC: B29C64/245 ,  B29C64/379 ,  B29C47/06 ,  B33Y10/00 ,  B33Y30/00

CPC classification number: B29C64/245 ,  B29C47/06 ,  B29C64/106 ,  B29C64/118 ,  B29C64/141 ,  B29C64/147 ,  B29C64/153 ,  B29C64/20 ,  B29C64/264 ,  B29C64/268 ,  B29C64/35 ,  B29C64/379 ,  B29C64/40 ,  B33Y10/00 ,  B33Y30/00 ,  B33Y70/00 ,  G03G15/1605 ,  G03G15/225

Abstract: 3-D printing transfers build material and support from an intermediate transfer belt (ITB) to a platen. The build material is the same as the support material, except that the build material includes a photoinitiator and the support material does not. The platen moves to make contact with the ITB, and the ITB transfers successive layers of build material and support material each time the platen contacts the ITB. The platen and a portion of the ITB that is adjacent the platen are heated prior to the platen contacting the ITB, and the same is exposed so as to crosslink polymers of build material, without crosslinking polymers of support material. The polymers of build material being crosslinked and the polymers of support material not being crosslinked makes the support material selectively soluble in a solvent.

公开(公告)号：US10201930B2

公开(公告)日：2019-02-12

申请号：US15147997

申请日：2016-05-06

Applicant: Xerox Corporation

Inventor： Eliud Robles Flores ,  David S. Derleth ,  David C. Craig ,  John S. Facci ,  Varun Sambhy

IPC: G03G15/16 ,  G03G13/16 ,  B29C64/223 ,  B33Y10/00 ,  B33Y30/00 ,  B29C64/245 ,  B29C64/30 ,  G03G13/14 ,  G03G15/22 ,  B29C64/141

Abstract: 3-D printers include a transfuse station having at least one roller on one side of an ITB supporting the ITB, and a transmission device on the same side of the ITB. A charge neutralizer is included on a second side of the intermediate transfer surface. The charge neutralizer outputs an opposite charge to neutralize existing static charge on a layer of the build material and the support material on the ITB, before the layer reaches the transfer station. Additionally, the intermediate transfer surface transfers the layer to a platen each time the platen contacts the second side of the intermediate transfer surface, at the transfer station, to successively form layers of the build material and the support material on the platen. Also, the transmission device outputs acoustic waves to cause the layer to move from the intermediate transfer surface to the platen, or to the layers on the platen.

公开(公告)号：US09857710B1

公开(公告)日：2018-01-02

申请号：US15258190

申请日：2016-09-07

Applicant: XEROX CORPORATION

Inventor： Varun Sambhy ,  John S. Facci ,  Eliud Robles-Flores ,  David S. Derleth ,  David C. Craig

IPC: G03G9/087 ,  B33Y70/00 ,  G03G9/08

CPC classification number: G03G9/08775 ,  B33Y70/00 ,  C08L29/02 ,  C08L29/04 ,  C08L29/06 ,  C08L39/06 ,  G03G9/081 ,  G03G9/08708 ,  G03G9/08722 ,  G03G9/08731 ,  G03G9/08737 ,  G03G9/0874 ,  G03G9/08766 ,  G03G9/08777

Abstract: A support material toner particle for use in xerographic additive manufacturing includes a polyvinyl alcohol (PVA) polymer and blend-additives including a chitosan and a polyvinylpyrrolidone (PVP), the amount of blend-additives is selected to adjust the Tg of the PVA polymer to be within about 1° C. to about 20° C. of a desired build material toner Tg. A xerographic toner system includes a build toner material and a support toner material, the support toner material includes a polyvinyl alcohol (PVA) polymer and blend-additives including a chitosan and a polyvinylpyrrolidone (PVP), the amount of blend-additives is selected to adjust the Tg of the PVA polymer to be within about 1° C. to about 20° C. of the build material toner Tg. A method of making a support toner material includes blending polyvinyl alcohol with blend additives including a chitosan and polyvinylpyrrolidone and forming support toner particles after the blending step.

公开(公告)号：US20170320269A1

公开(公告)日：2017-11-09

申请号：US15147997

申请日：2016-05-06

Applicant: Xerox Corporation

Inventor： Eliud Robles Flores ,  David S. Derleth ,  David C. Craig ,  John S. Facci ,  Varun Sambhy

IPC: B29C64/245 ,  B29C64/30 ,  G03G15/00 ,  B33Y10/00 ,  B33Y30/00

CPC classification number: B29C64/223 ,  B29C64/141 ,  B29C64/245 ,  B29C64/30 ,  B33Y10/00 ,  B33Y30/00 ,  G03G13/14 ,  G03G13/16 ,  G03G15/161 ,  G03G15/1625 ,  G03G15/169 ,  G03G15/224 ,  G03G15/225

Abstract: 3-D printers include a transfuse station having at least one roller on one side of an ITB supporting the ITB, and a transmission device on the same side of the ITB. A charge neutralizer is included on a second side of the intermediate transfer surface. The charge neutralizer outputs an opposite charge to neutralize existing static charge on a layer of the build material and the support material on the ITB, before the layer reaches the transfer station. Additionally, the intermediate transfer surface transfers the layer to a platen each time the platen contacts the second side of the intermediate transfer surface, at the transfer station, to successively form layers of the build material and the support material on the platen. Also, the transmission device outputs acoustic waves to cause the layer to move from the intermediate transfer surface to the platen, or to the layers on the platen.

公开(公告)号：USRE47920E1

公开(公告)日：2020-03-31

申请号：US16167707

申请日：2018-10-23

Applicant: XEROX CORPORATION

Inventor： Varun Sambhy ,  John S. Facci ,  Eliud Robles-Flores ,  David S. Derleth ,  David C. Craig

IPC: G03G9/087 ,  B33Y70/00 ,  G03G9/08 ,  C08L29/04 ,  C08L39/06 ,  G03G15/22

Abstract: A support material toner particle for use in xerographic additive manufacturing includes a PVA polymer blend including a polyvinyl alcohol (PVA) polymer and blend-additives including a chitosan and a polyvinylpyrrolidone (PVP), the amount of blend-additives is selected to adjust the Tg of the PVA polymer blend to be within about 1° C. to about 20° C. of a desired build material toner Tg. A xerographic toner system includes a build toner material and a support toner material, the support toner material includes a PVA polymer blend including a polyvinyl alcohol (PVA) polymer and blend-additives including a chitosan and a polyvinylpyrrolidone (PVP), the amount of blend-additives is selected to adjust the Tg of the PVA polymer blend to be within about 1° C. to about 20° C. of the build material toner Tg. A method of making a support toner material includes blending polyvinyl alcohol with blend additives including a chitosan and polyvinylpyrrolidone and forming support toner particles after the blending step.

公开(公告)号：US10350828B2

公开(公告)日：2019-07-16

申请号：US16059496

申请日：2018-08-09

Applicant: Xerox Corporation

Inventor： John S. Facci ,  David C. Craig ,  David S. Derleth ,  Eliud Robles Flores ,  Varun Sambhy

IPC: B29C67/00 ,  B29C64/245 ,  B29C48/18 ,  B29C64/379 ,  G03G15/16 ,  G03G15/22 ,  B33Y70/00 ,  B29C64/141 ,  B29C64/40 ,  B29C64/118 ,  B29C64/153 ,  B29C64/264 ,  B29C64/20 ,  B29C64/147 ,  B29C64/268 ,  B29C64/106 ,  B29C64/188 ,  B29C64/291 ,  B29C64/295 ,  B33Y10/00 ,  B33Y30/00 ,  B29C64/35

Abstract: 3-D printing transfers build material and support from an intermediate transfer belt (ITB) to a platen. The build material is the same as the support material, except that the build material includes a photoinitiator and the support material does not. The platen moves to make contact with the ITB, and the ITB transfers successive layers of build material and support material each time the platen contacts the ITB. The platen and a portion of the ITB that is adjacent the platen are heated prior to the platen contacting the ITB, and the same is exposed so as to crosslink polymers of build material, without crosslinking polymers of support material. The polymers of build material being crosslinked and the polymers of support material not being crosslinked makes the support material selectively soluble in a solvent.

公开(公告)号：US20170326795A1

公开(公告)日：2017-11-16

申请号：US15152651

申请日：2016-05-12

Applicant: Xerox Corporation

Inventor： John S. Facci ,  David C. Craig ,  Varun Sambhy ,  Eliud Robles Flores ,  David S. Derleth

IPC: B29C64/245 ,  B29C35/08 ,  B29C64/264 ,  B33Y30/00

CPC classification number: B29C64/245 ,  B29C35/0805 ,  B29C64/141 ,  B29C64/223 ,  B29C64/264 ,  B29C64/40 ,  B29C2035/0827 ,  B33Y30/00 ,  G03G15/1605 ,  G03G15/225 ,  G03G15/24 ,  G03G2215/1695

Abstract: A 3-D printer includes a development station positioned to electrostatically transfer layers of material to an intermediate transfer surface, and a transfuse station adjacent the intermediate transfer surface. The transfuse station is positioned to receive the layers as the intermediate transfer surface moves past the transfuse station. Also, a platen is included that moves relative to the intermediate transfer surface. The intermediate transfer surface transfers a layer of the material to the platen each time the platen contacts one of the layers on the intermediate transfer surface at the transfuse station to successively form a freestanding stack of the layers on the platen. A curing station is positioned to apply ultraviolet light to each layer, after each layer is transferred from the transfuse station to the platen. The curing station selectively applies the ultraviolet light to crosslink polymers only in a portion of the material within the layer.