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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 ...


2
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 ...


3
Charles Sperry
Charles R Sperry, Dennis F McNamara Jr, Suzanne M Scott, Charles W Hull, Mehdi Mojdeh: Elevator and method for tilting solid image build platform for reducing air entrainment and for build release. 3D Systems, June 18, 2013: US08465689 (13 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 ...


4
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 ...


6
Charles Sperry
Jouni P Partanen, Raymond M Soliz, Dennis F McNamara Jr, Charles R Sperry, Charles W Hull: Bubble-free cross-sections for use in solid imaging. 3D Systems, William A Simons, Keith A Robertson, March 15, 2011: US07906061 (5 worldwide citation)

A solid imaging apparatus and method employing build material transfer means effective to transfer solidifiable liquid build material from a first side of a radiation transparent build material carrier to a receiving substrate without entrapping air bubbles in layers of transferred solidifiable liqu ...


7
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 ...


8
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, April 22, 2014: US08703037 (1 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, Charles W Hull, Mehdi Mojdeh: Elevator and Method for Tilting Solid Image Build Platform for Reducing Air Entrainment and for Build Release. 3D Systems, November 10, 2011: US20110272857-A1

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 ...