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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 (25 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 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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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 (4 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 ...


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C Wayne Jaeger, Loc V Bui, Donald R Titterington, Clifford R King: Use of polymeric dyes in hot melt ink jet inks. Tektronix, Ralph D Alessandro, William A Simons, April 15, 1997: US05621022 (279 worldwide citation)


A phase change ink composition is disclosed wherein the ink composition utilizes polymeric dyes in combination with a selected phase change ink carrier composition.


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Joseph J Sizensky: Stripping composition and method of using the same. Olin Hunt Specialty Products, William A Simons, Thomas P O Day, October 14, 1986: US04617251 (109 worldwide citation)


Disclosed is a stripping composition for effectively removing an organic polymeric material from a substrate. The stripping composition is essentially free of phenol compounds and halogenated hydrocarbon compounds and contains a select amine compound and an organic polar solvent. It has been found t ...



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