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Charles Sperry
Charles R Sperry, Dennis F McNamara, Suzanne M Scott: Material delivery tension and tracking system for use in solid imaging. 3D Systems, William A Simons, Keith A Roberson, December 23, 2008: US07467939 (26 worldwide citation)

A solid imaging apparatus and method employing a radiation transparent build material carrier and a build material dispensing system that accurately controls the thickness of the transferred layer of solidifiable liquid build material to the radiation transparent build material carrier to achieve hi ...


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Charles Sperry
Charles W Hull, Jouni Partanen, Charles R Sperry, Suzanne M Scott, Dennis F McNamara Jr: Imager and method for consistent repeatable alignment in a solid imaging apparatus. 3D Systems, William Simons, Keith A Roberson, July 17, 2012: US08221671 (21 worldwide citation)

A solid imaging apparatus is provided that includes a replaceable cartridge containing a source of build material and an extendable and retractable flexible transport film for transporting the build material layer-by-layer from the cartridge to the surface of a build in an image plane. An operator u ...


3
Charles Sperry
Charles R Sperry, Dennis F McNamara Jr, Suzanne M Scott, Charles W Hull, Jouni Partanen, Mehdi Mojdeh, William J Pappas, Richard O Gregory II: Solid imaging apparatus and method. 3D Systems, William A Simon, Keith A Roberson, November 10, 2009: US07614866 (17 worldwide citation)

A solid imaging apparatus is provided that includes a replaceable cartridge containing a source of build material and an extendable and retractable flexible transport film for transporting the build material layer-by-layer from the cartridge to the surface of a build in an image plane. An operator u ...


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Charles Sperry
Charles W Hull, Jouni P Partanen, Charles R Sperry, Patrick Dunne, Suzanne M Scott, Dennis F McNamara, Chris R Manners: Edge smoothness with low resolution projected images for use in solid imaging. 3D Systems, Ralph D Alessandro, Keith A Roberson, July 20, 2010: US07758799 (8 worldwide citation)

A solid imaging apparatus and method employing sub-pixel shifting in multiple exposures of the digitally light projected image of a cross-section of a three-dimensional object on a solidifiable liquid medium. The multiple exposures provide increased resolution, preserving image features in a three-d ...


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Charles Sperry
Charles R Sperry, Dennis F McNamara Jr, Suzanne M Scott, Jason A Rittenhour, Charles W Hull, Mehdi Mojdeh: Cartridge for solid imaging apparatus and method. 3D Systems, William A Simons, Keith A Roberson, January 31, 2012: US08105066 (5 worldwide citation)

A solid imaging apparatus is provided that includes a replaceable cartridge containing a source of build material and an extendable and retractable flexible transport film for transporting the build material layer-by-layer from the cartridge to the surface of a build in an image plane. An operator u ...


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Charles Sperry
Suzanne M Scott, Charles R Sperry, Dennis F McNamara: Material delivery system for use in solid imaging. 3D Systems, William A Simons, Keith A Roberson, April 26, 2011: US07931460 (5 worldwide citation)

A disposable liquid build material feed cartridge for use in a solid imaging apparatus and a method of dispensing build material for use in such an apparatus with a radiation transparent build material carrier. The disposable liquid build material feed cartridge recovers unused liquid material from ...


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Charles Sperry
Charles R Sperry, Dennis F McNamara Jr, Suzanne M Scott, Charles W Hull, Mehdi Mojdeh: Method for tilting solid image build platform for reducing air entrainment and for build release. 3D Systems, William A Simons, Keith A Roberson, August 23, 2011: US08003039 (4 worldwide citation)

A solid imaging apparatus is provided that includes a replaceable cartridge containing a source of build material and an extendable and retractable flexible transport film for transporting the build material layer-by-layer from the cartridge to the surface of a build in an image plane. An operator u ...


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